./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix031.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/mix031.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cde23df1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix031.opt.i ./goblint.2024-05-21_14-57-05.files/protection/mix031.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-cde23df-m [2024-06-14 12:16:59,483 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 12:16:59,530 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 12:16:59,533 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 12:16:59,534 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 12:16:59,560 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 12:16:59,565 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 12:16:59,566 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 12:16:59,566 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 12:16:59,571 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 12:16:59,571 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 12:16:59,571 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 12:16:59,572 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 12:16:59,573 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 12:16:59,574 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 12:16:59,574 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 12:16:59,574 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 12:16:59,574 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 12:16:59,574 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 12:16:59,575 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 12:16:59,575 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 12:16:59,575 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 12:16:59,575 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 12:16:59,576 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 12:16:59,576 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 12:16:59,576 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 12:16:59,576 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 12:16:59,576 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 12:16:59,576 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 12:16:59,577 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 12:16:59,577 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 12:16:59,578 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 12:16:59,578 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 12:16:59,578 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 12:16:59,578 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 12:16:59,579 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 12:16:59,579 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 12:16:59,579 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 12:16:59,579 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 12:16:59,579 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 12:16:59,579 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 12:16:59,580 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 12:16:59,580 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 12:16:59,580 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 12:16:59,795 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 12:16:59,816 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 12:16:59,818 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 12:16:59,819 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 12:16:59,819 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 12:16:59,820 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/mix031.opt.yml/witness.yml [2024-06-14 12:16:59,992 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 12:16:59,992 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 12:16:59,993 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix031.opt.i [2024-06-14 12:17:00,962 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 12:17:01,184 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 12:17:01,185 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix031.opt.i [2024-06-14 12:17:01,198 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff5cc4fea/738d834ac6e3487e9c190da8d27ee913/FLAGc4bf678ff [2024-06-14 12:17:01,208 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff5cc4fea/738d834ac6e3487e9c190da8d27ee913 [2024-06-14 12:17:01,208 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 12:17:01,211 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 12:17:01,212 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 12:17:01,212 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 12:17:01,216 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 12:17:01,217 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 12:16:59" (1/2) ... [2024-06-14 12:17:01,217 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@facbaef and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:17:01, skipping insertion in model container [2024-06-14 12:17:01,217 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 12:16:59" (1/2) ... [2024-06-14 12:17:01,218 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1a774a5b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:17:01, skipping insertion in model container [2024-06-14 12:17:01,219 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 12:17:01" (2/2) ... [2024-06-14 12:17:01,219 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@facbaef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:17:01, skipping insertion in model container [2024-06-14 12:17:01,219 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 12:17:01" (2/2) ... [2024-06-14 12:17:01,219 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 12:17:01,278 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 12:17:01,279 INFO L97 edCorrectnessWitness]: Location invariant before [L826-L826] ((((((((((((((((((! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p0_EBX && __unbuffered_p0_EBX <= 1) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1))) [2024-06-14 12:17:01,279 INFO L97 edCorrectnessWitness]: Location invariant before [L827-L827] ((((((((((((((((((! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p0_EBX && __unbuffered_p0_EBX <= 1) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1))) [2024-06-14 12:17:01,279 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 12:17:01,280 INFO L106 edCorrectnessWitness]: ghost_update [L824-L824] multithreaded = 1; [2024-06-14 12:17:01,318 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 12:17:01,584 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 12:17:01,592 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-14 12:17:01,693 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 12:17:01,740 INFO L206 MainTranslator]: Completed translation [2024-06-14 12:17:01,741 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:17:01 WrapperNode [2024-06-14 12:17:01,741 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 12:17:01,742 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 12:17:01,742 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 12:17:01,742 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 12:17:01,748 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:17:01" (1/1) ... [2024-06-14 12:17:01,776 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:17:01" (1/1) ... [2024-06-14 12:17:01,812 INFO L138 Inliner]: procedures = 174, calls = 42, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 123 [2024-06-14 12:17:01,814 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 12:17:01,815 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 12:17:01,815 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 12:17:01,815 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 12:17:01,824 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:17:01" (1/1) ... [2024-06-14 12:17:01,825 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:17:01" (1/1) ... [2024-06-14 12:17:01,836 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:17:01" (1/1) ... [2024-06-14 12:17:01,851 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-14 12:17:01,856 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:17:01" (1/1) ... [2024-06-14 12:17:01,856 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:17:01" (1/1) ... [2024-06-14 12:17:01,868 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:17:01" (1/1) ... [2024-06-14 12:17:01,870 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:17:01" (1/1) ... [2024-06-14 12:17:01,871 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:17:01" (1/1) ... [2024-06-14 12:17:01,873 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:17:01" (1/1) ... [2024-06-14 12:17:01,875 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 12:17:01,876 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 12:17:01,876 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 12:17:01,876 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 12:17:01,877 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:17:01" (1/1) ... [2024-06-14 12:17:01,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 12:17:01,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 12:17:01,946 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-14 12:17:01,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-14 12:17:01,979 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-14 12:17:01,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 12:17:01,980 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-14 12:17:01,980 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-14 12:17:01,980 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-14 12:17:01,980 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-14 12:17:01,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 12:17:01,981 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-14 12:17:01,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 12:17:01,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 12:17:01,982 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-14 12:17:02,075 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 12:17:02,077 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 12:17:02,408 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 12:17:02,408 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 12:17:02,561 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 12:17:02,561 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-14 12:17:02,567 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 12:17:02 BoogieIcfgContainer [2024-06-14 12:17:02,568 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 12:17:02,570 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 12:17:02,570 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 12:17:02,573 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 12:17:02,573 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 12:16:59" (1/4) ... [2024-06-14 12:17:02,573 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9affeeb and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 12:17:02, skipping insertion in model container [2024-06-14 12:17:02,574 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 12:17:01" (2/4) ... [2024-06-14 12:17:02,574 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9affeeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 12:17:02, skipping insertion in model container [2024-06-14 12:17:02,574 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:17:01" (3/4) ... [2024-06-14 12:17:02,574 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9affeeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 12:17:02, skipping insertion in model container [2024-06-14 12:17:02,575 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 12:17:02" (4/4) ... [2024-06-14 12:17:02,576 INFO L112 eAbstractionObserver]: Analyzing ICFG mix031.opt.i [2024-06-14 12:17:02,589 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 12:17:02,589 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-14 12:17:02,590 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 12:17:02,623 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-14 12:17:02,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 34 transitions, 76 flow [2024-06-14 12:17:02,680 INFO L124 PetriNetUnfolderBase]: 0/32 cut-off events. [2024-06-14 12:17:02,680 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 12:17:02,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 32 events. 0/32 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 46 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-14 12:17:02,682 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 34 transitions, 76 flow [2024-06-14 12:17:02,685 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 26 transitions, 58 flow [2024-06-14 12:17:02,704 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 12:17:02,710 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@541982d1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 12:17:02,711 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-14 12:17:02,714 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 12:17:02,715 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-06-14 12:17:02,715 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 12:17:02,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:17:02,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-14 12:17:02,716 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:17:02,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:17:02,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1705962069, now seen corresponding path program 1 times [2024-06-14 12:17:02,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:17:02,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598625411] [2024-06-14 12:17:02,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:17:02,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:17:02,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:17:03,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:17:03,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:17:03,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598625411] [2024-06-14 12:17:03,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598625411] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:17:03,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:17:03,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-14 12:17:03,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186704524] [2024-06-14 12:17:03,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:17:03,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 12:17:03,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:17:03,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 12:17:03,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 12:17:03,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 34 [2024-06-14 12:17:03,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:03,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:17:03,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 34 [2024-06-14 12:17:03,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:17:03,930 INFO L124 PetriNetUnfolderBase]: 162/327 cut-off events. [2024-06-14 12:17:03,930 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-14 12:17:03,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 640 conditions, 327 events. 162/327 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1327 event pairs, 97 based on Foata normal form. 1/313 useless extension candidates. Maximal degree in co-relation 626. Up to 288 conditions per place. [2024-06-14 12:17:03,934 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 23 selfloop transitions, 3 changer transitions 0/32 dead transitions. [2024-06-14 12:17:03,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 32 transitions, 125 flow [2024-06-14 12:17:03,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 12:17:03,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 12:17:03,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 61 transitions. [2024-06-14 12:17:03,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5980392156862745 [2024-06-14 12:17:03,944 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 58 flow. Second operand 3 states and 61 transitions. [2024-06-14 12:17:03,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 32 transitions, 125 flow [2024-06-14 12:17:03,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 32 transitions, 122 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-14 12:17:03,948 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 77 flow [2024-06-14 12:17:03,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=77, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2024-06-14 12:17:03,952 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 1 predicate places. [2024-06-14 12:17:03,952 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 77 flow [2024-06-14 12:17:03,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:03,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:17:03,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:17:03,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 12:17:03,953 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:17:03,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:17:03,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1247929228, now seen corresponding path program 1 times [2024-06-14 12:17:03,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:17:03,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668425412] [2024-06-14 12:17:03,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:17:03,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:17:03,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:17:04,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:17:04,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:17:04,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668425412] [2024-06-14 12:17:04,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668425412] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:17:04,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:17:04,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-14 12:17:04,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858396905] [2024-06-14 12:17:04,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:17:04,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-14 12:17:04,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:17:04,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-14 12:17:04,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-14 12:17:04,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2024-06-14 12:17:04,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 77 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:04,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:17:04,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2024-06-14 12:17:04,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:17:04,754 INFO L124 PetriNetUnfolderBase]: 186/357 cut-off events. [2024-06-14 12:17:04,755 INFO L125 PetriNetUnfolderBase]: For 68/68 co-relation queries the response was YES. [2024-06-14 12:17:04,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 801 conditions, 357 events. 186/357 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1447 event pairs, 94 based on Foata normal form. 2/353 useless extension candidates. Maximal degree in co-relation 786. Up to 319 conditions per place. [2024-06-14 12:17:04,760 INFO L140 encePairwiseOnDemand]: 28/34 looper letters, 28 selfloop transitions, 5 changer transitions 0/38 dead transitions. [2024-06-14 12:17:04,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 38 transitions, 169 flow [2024-06-14 12:17:04,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 12:17:04,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 12:17:04,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 75 transitions. [2024-06-14 12:17:04,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5514705882352942 [2024-06-14 12:17:04,763 INFO L175 Difference]: Start difference. First operand has 34 places, 28 transitions, 77 flow. Second operand 4 states and 75 transitions. [2024-06-14 12:17:04,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 38 transitions, 169 flow [2024-06-14 12:17:04,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 38 transitions, 166 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 12:17:04,766 INFO L231 Difference]: Finished difference. Result has 37 places, 30 transitions, 101 flow [2024-06-14 12:17:04,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=101, PETRI_PLACES=37, PETRI_TRANSITIONS=30} [2024-06-14 12:17:04,767 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2024-06-14 12:17:04,767 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 30 transitions, 101 flow [2024-06-14 12:17:04,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:04,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:17:04,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:17:04,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-14 12:17:04,769 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:17:04,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:17:04,771 INFO L85 PathProgramCache]: Analyzing trace with hash -31099420, now seen corresponding path program 1 times [2024-06-14 12:17:04,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:17:04,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199494019] [2024-06-14 12:17:04,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:17:04,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:17:04,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:17:05,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:17:05,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:17:05,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199494019] [2024-06-14 12:17:05,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199494019] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:17:05,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:17:05,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 12:17:05,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798898827] [2024-06-14 12:17:05,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:17:05,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 12:17:05,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:17:05,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 12:17:05,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-14 12:17:05,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 34 [2024-06-14 12:17:05,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 30 transitions, 101 flow. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:05,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:17:05,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 34 [2024-06-14 12:17:05,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:17:05,651 INFO L124 PetriNetUnfolderBase]: 219/413 cut-off events. [2024-06-14 12:17:05,652 INFO L125 PetriNetUnfolderBase]: For 226/226 co-relation queries the response was YES. [2024-06-14 12:17:05,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1021 conditions, 413 events. 219/413 cut-off events. For 226/226 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1641 event pairs, 99 based on Foata normal form. 2/411 useless extension candidates. Maximal degree in co-relation 1004. Up to 366 conditions per place. [2024-06-14 12:17:05,654 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 33 selfloop transitions, 7 changer transitions 0/44 dead transitions. [2024-06-14 12:17:05,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 44 transitions, 219 flow [2024-06-14 12:17:05,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 12:17:05,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 12:17:05,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 87 transitions. [2024-06-14 12:17:05,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5117647058823529 [2024-06-14 12:17:05,658 INFO L175 Difference]: Start difference. First operand has 37 places, 30 transitions, 101 flow. Second operand 5 states and 87 transitions. [2024-06-14 12:17:05,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 44 transitions, 219 flow [2024-06-14 12:17:05,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 44 transitions, 210 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-14 12:17:05,661 INFO L231 Difference]: Finished difference. Result has 40 places, 32 transitions, 125 flow [2024-06-14 12:17:05,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=125, PETRI_PLACES=40, PETRI_TRANSITIONS=32} [2024-06-14 12:17:05,662 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 7 predicate places. [2024-06-14 12:17:05,662 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 125 flow [2024-06-14 12:17:05,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:05,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:17:05,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:17:05,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-14 12:17:05,663 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:17:05,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:17:05,663 INFO L85 PathProgramCache]: Analyzing trace with hash -964081005, now seen corresponding path program 1 times [2024-06-14 12:17:05,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:17:05,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705738616] [2024-06-14 12:17:05,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:17:05,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:17:05,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:17:06,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:17:06,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:17:06,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705738616] [2024-06-14 12:17:06,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705738616] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:17:06,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:17:06,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 12:17:06,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804726226] [2024-06-14 12:17:06,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:17:06,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 12:17:06,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:17:06,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 12:17:06,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-14 12:17:06,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 34 [2024-06-14 12:17:06,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 32 transitions, 125 flow. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:06,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:17:06,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 34 [2024-06-14 12:17:06,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:17:06,557 INFO L124 PetriNetUnfolderBase]: 213/404 cut-off events. [2024-06-14 12:17:06,558 INFO L125 PetriNetUnfolderBase]: For 383/383 co-relation queries the response was YES. [2024-06-14 12:17:06,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1082 conditions, 404 events. 213/404 cut-off events. For 383/383 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1577 event pairs, 57 based on Foata normal form. 4/403 useless extension candidates. Maximal degree in co-relation 1064. Up to 338 conditions per place. [2024-06-14 12:17:06,562 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 38 selfloop transitions, 9 changer transitions 0/51 dead transitions. [2024-06-14 12:17:06,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 51 transitions, 271 flow [2024-06-14 12:17:06,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:17:06,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:17:06,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 103 transitions. [2024-06-14 12:17:06,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5049019607843137 [2024-06-14 12:17:06,567 INFO L175 Difference]: Start difference. First operand has 40 places, 32 transitions, 125 flow. Second operand 6 states and 103 transitions. [2024-06-14 12:17:06,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 51 transitions, 271 flow [2024-06-14 12:17:06,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 51 transitions, 256 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-14 12:17:06,570 INFO L231 Difference]: Finished difference. Result has 43 places, 34 transitions, 149 flow [2024-06-14 12:17:06,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=149, PETRI_PLACES=43, PETRI_TRANSITIONS=34} [2024-06-14 12:17:06,572 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 10 predicate places. [2024-06-14 12:17:06,572 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 34 transitions, 149 flow [2024-06-14 12:17:06,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:06,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:17:06,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:17:06,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-14 12:17:06,573 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:17:06,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:17:06,573 INFO L85 PathProgramCache]: Analyzing trace with hash -348904063, now seen corresponding path program 1 times [2024-06-14 12:17:06,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:17:06,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304628648] [2024-06-14 12:17:06,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:17:06,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:17:06,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:17:07,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:17:07,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:17:07,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304628648] [2024-06-14 12:17:07,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304628648] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:17:07,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:17:07,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 12:17:07,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208756633] [2024-06-14 12:17:07,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:17:07,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 12:17:07,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:17:07,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 12:17:07,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-14 12:17:07,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2024-06-14 12:17:07,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 34 transitions, 149 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:07,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:17:07,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2024-06-14 12:17:07,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:17:07,428 INFO L124 PetriNetUnfolderBase]: 165/350 cut-off events. [2024-06-14 12:17:07,428 INFO L125 PetriNetUnfolderBase]: For 465/465 co-relation queries the response was YES. [2024-06-14 12:17:07,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 981 conditions, 350 events. 165/350 cut-off events. For 465/465 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1423 event pairs, 61 based on Foata normal form. 1/346 useless extension candidates. Maximal degree in co-relation 962. Up to 291 conditions per place. [2024-06-14 12:17:07,430 INFO L140 encePairwiseOnDemand]: 28/34 looper letters, 28 selfloop transitions, 6 changer transitions 0/41 dead transitions. [2024-06-14 12:17:07,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 41 transitions, 235 flow [2024-06-14 12:17:07,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 12:17:07,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 12:17:07,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 80 transitions. [2024-06-14 12:17:07,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47058823529411764 [2024-06-14 12:17:07,432 INFO L175 Difference]: Start difference. First operand has 43 places, 34 transitions, 149 flow. Second operand 5 states and 80 transitions. [2024-06-14 12:17:07,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 41 transitions, 235 flow [2024-06-14 12:17:07,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 41 transitions, 214 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-14 12:17:07,437 INFO L231 Difference]: Finished difference. Result has 44 places, 36 transitions, 155 flow [2024-06-14 12:17:07,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=155, PETRI_PLACES=44, PETRI_TRANSITIONS=36} [2024-06-14 12:17:07,442 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 11 predicate places. [2024-06-14 12:17:07,442 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 36 transitions, 155 flow [2024-06-14 12:17:07,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:07,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:17:07,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:17:07,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-14 12:17:07,445 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:17:07,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:17:07,445 INFO L85 PathProgramCache]: Analyzing trace with hash 2068876627, now seen corresponding path program 1 times [2024-06-14 12:17:07,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:17:07,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141152871] [2024-06-14 12:17:07,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:17:07,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:17:07,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:17:08,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:17:08,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:17:08,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141152871] [2024-06-14 12:17:08,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141152871] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:17:08,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:17:08,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:17:08,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963173241] [2024-06-14 12:17:08,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:17:08,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:17:08,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:17:08,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:17:08,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:17:08,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 34 [2024-06-14 12:17:08,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 36 transitions, 155 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:08,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:17:08,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 34 [2024-06-14 12:17:08,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:17:08,304 INFO L124 PetriNetUnfolderBase]: 191/384 cut-off events. [2024-06-14 12:17:08,304 INFO L125 PetriNetUnfolderBase]: For 716/716 co-relation queries the response was YES. [2024-06-14 12:17:08,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1147 conditions, 384 events. 191/384 cut-off events. For 716/716 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1549 event pairs, 73 based on Foata normal form. 1/385 useless extension candidates. Maximal degree in co-relation 1126. Up to 335 conditions per place. [2024-06-14 12:17:08,308 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 30 selfloop transitions, 8 changer transitions 0/44 dead transitions. [2024-06-14 12:17:08,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 44 transitions, 253 flow [2024-06-14 12:17:08,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:17:08,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:17:08,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 88 transitions. [2024-06-14 12:17:08,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43137254901960786 [2024-06-14 12:17:08,309 INFO L175 Difference]: Start difference. First operand has 44 places, 36 transitions, 155 flow. Second operand 6 states and 88 transitions. [2024-06-14 12:17:08,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 44 transitions, 253 flow [2024-06-14 12:17:08,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 44 transitions, 242 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-14 12:17:08,311 INFO L231 Difference]: Finished difference. Result has 47 places, 38 transitions, 177 flow [2024-06-14 12:17:08,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=177, PETRI_PLACES=47, PETRI_TRANSITIONS=38} [2024-06-14 12:17:08,313 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 14 predicate places. [2024-06-14 12:17:08,314 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 177 flow [2024-06-14 12:17:08,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:08,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:17:08,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:17:08,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-14 12:17:08,314 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:17:08,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:17:08,315 INFO L85 PathProgramCache]: Analyzing trace with hash -823368730, now seen corresponding path program 1 times [2024-06-14 12:17:08,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:17:08,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721894744] [2024-06-14 12:17:08,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:17:08,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:17:08,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:17:08,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:17:08,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:17:08,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721894744] [2024-06-14 12:17:08,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721894744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:17:08,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:17:08,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:17:08,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312246740] [2024-06-14 12:17:08,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:17:08,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:17:08,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:17:08,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:17:08,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:17:08,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 34 [2024-06-14 12:17:08,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 177 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:08,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:17:08,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 34 [2024-06-14 12:17:08,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:17:09,184 INFO L124 PetriNetUnfolderBase]: 209/405 cut-off events. [2024-06-14 12:17:09,185 INFO L125 PetriNetUnfolderBase]: For 1147/1147 co-relation queries the response was YES. [2024-06-14 12:17:09,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1327 conditions, 405 events. 209/405 cut-off events. For 1147/1147 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1623 event pairs, 80 based on Foata normal form. 1/406 useless extension candidates. Maximal degree in co-relation 1305. Up to 348 conditions per place. [2024-06-14 12:17:09,187 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 34 selfloop transitions, 8 changer transitions 0/49 dead transitions. [2024-06-14 12:17:09,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 49 transitions, 291 flow [2024-06-14 12:17:09,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:17:09,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:17:09,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 91 transitions. [2024-06-14 12:17:09,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44607843137254904 [2024-06-14 12:17:09,189 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 177 flow. Second operand 6 states and 91 transitions. [2024-06-14 12:17:09,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 49 transitions, 291 flow [2024-06-14 12:17:09,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 49 transitions, 274 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-14 12:17:09,191 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 193 flow [2024-06-14 12:17:09,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=193, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2024-06-14 12:17:09,192 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 16 predicate places. [2024-06-14 12:17:09,192 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 193 flow [2024-06-14 12:17:09,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:09,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:17:09,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:17:09,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-14 12:17:09,193 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:17:09,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:17:09,193 INFO L85 PathProgramCache]: Analyzing trace with hash 2090730976, now seen corresponding path program 1 times [2024-06-14 12:17:09,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:17:09,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388297825] [2024-06-14 12:17:09,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:17:09,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:17:09,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:17:10,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:17:10,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:17:10,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388297825] [2024-06-14 12:17:10,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388297825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:17:10,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:17:10,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:17:10,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142117311] [2024-06-14 12:17:10,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:17:10,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:17:10,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:17:10,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:17:10,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:17:10,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 34 [2024-06-14 12:17:10,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 193 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:10,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:17:10,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 34 [2024-06-14 12:17:10,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:17:10,496 INFO L124 PetriNetUnfolderBase]: 223/415 cut-off events. [2024-06-14 12:17:10,497 INFO L125 PetriNetUnfolderBase]: For 1467/1467 co-relation queries the response was YES. [2024-06-14 12:17:10,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1435 conditions, 415 events. 223/415 cut-off events. For 1467/1467 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1583 event pairs, 39 based on Foata normal form. 4/419 useless extension candidates. Maximal degree in co-relation 1412. Up to 327 conditions per place. [2024-06-14 12:17:10,499 INFO L140 encePairwiseOnDemand]: 25/34 looper letters, 46 selfloop transitions, 12 changer transitions 0/63 dead transitions. [2024-06-14 12:17:10,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 63 transitions, 359 flow [2024-06-14 12:17:10,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:17:10,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:17:10,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2024-06-14 12:17:10,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46691176470588236 [2024-06-14 12:17:10,501 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 193 flow. Second operand 8 states and 127 transitions. [2024-06-14 12:17:10,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 63 transitions, 359 flow [2024-06-14 12:17:10,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 63 transitions, 342 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-14 12:17:10,504 INFO L231 Difference]: Finished difference. Result has 53 places, 41 transitions, 205 flow [2024-06-14 12:17:10,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=205, PETRI_PLACES=53, PETRI_TRANSITIONS=41} [2024-06-14 12:17:10,505 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 20 predicate places. [2024-06-14 12:17:10,505 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 41 transitions, 205 flow [2024-06-14 12:17:10,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:10,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:17:10,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:17:10,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-14 12:17:10,506 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:17:10,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:17:10,507 INFO L85 PathProgramCache]: Analyzing trace with hash -289343200, now seen corresponding path program 2 times [2024-06-14 12:17:10,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:17:10,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963614013] [2024-06-14 12:17:10,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:17:10,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:17:10,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:17:11,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:17:11,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:17:11,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963614013] [2024-06-14 12:17:11,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963614013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:17:11,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:17:11,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:17:11,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015302739] [2024-06-14 12:17:11,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:17:11,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:17:11,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:17:11,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:17:11,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:17:11,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 34 [2024-06-14 12:17:11,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 205 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:11,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:17:11,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 34 [2024-06-14 12:17:11,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:17:11,383 INFO L124 PetriNetUnfolderBase]: 204/396 cut-off events. [2024-06-14 12:17:11,383 INFO L125 PetriNetUnfolderBase]: For 1836/1838 co-relation queries the response was YES. [2024-06-14 12:17:11,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1455 conditions, 396 events. 204/396 cut-off events. For 1836/1838 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1547 event pairs, 62 based on Foata normal form. 3/399 useless extension candidates. Maximal degree in co-relation 1431. Up to 332 conditions per place. [2024-06-14 12:17:11,386 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 31 selfloop transitions, 11 changer transitions 0/49 dead transitions. [2024-06-14 12:17:11,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 49 transitions, 315 flow [2024-06-14 12:17:11,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:17:11,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:17:11,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 89 transitions. [2024-06-14 12:17:11,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4362745098039216 [2024-06-14 12:17:11,387 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 205 flow. Second operand 6 states and 89 transitions. [2024-06-14 12:17:11,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 49 transitions, 315 flow [2024-06-14 12:17:11,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 49 transitions, 287 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-14 12:17:11,389 INFO L231 Difference]: Finished difference. Result has 54 places, 43 transitions, 220 flow [2024-06-14 12:17:11,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=220, PETRI_PLACES=54, PETRI_TRANSITIONS=43} [2024-06-14 12:17:11,389 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 21 predicate places. [2024-06-14 12:17:11,390 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 43 transitions, 220 flow [2024-06-14 12:17:11,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:11,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:17:11,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:17:11,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-14 12:17:11,390 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:17:11,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:17:11,391 INFO L85 PathProgramCache]: Analyzing trace with hash -289333280, now seen corresponding path program 1 times [2024-06-14 12:17:11,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:17:11,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318579074] [2024-06-14 12:17:11,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:17:11,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:17:11,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:17:12,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:17:12,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:17:12,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318579074] [2024-06-14 12:17:12,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318579074] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:17:12,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:17:12,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:17:12,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966615671] [2024-06-14 12:17:12,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:17:12,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:17:12,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:17:12,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:17:12,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:17:12,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 34 [2024-06-14 12:17:12,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 43 transitions, 220 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:12,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:17:12,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 34 [2024-06-14 12:17:12,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:17:12,364 INFO L124 PetriNetUnfolderBase]: 188/371 cut-off events. [2024-06-14 12:17:12,364 INFO L125 PetriNetUnfolderBase]: For 1764/1764 co-relation queries the response was YES. [2024-06-14 12:17:12,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1382 conditions, 371 events. 188/371 cut-off events. For 1764/1764 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1451 event pairs, 49 based on Foata normal form. 1/372 useless extension candidates. Maximal degree in co-relation 1356. Up to 323 conditions per place. [2024-06-14 12:17:12,366 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 36 selfloop transitions, 10 changer transitions 0/52 dead transitions. [2024-06-14 12:17:12,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 52 transitions, 338 flow [2024-06-14 12:17:12,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:17:12,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:17:12,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 99 transitions. [2024-06-14 12:17:12,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41596638655462187 [2024-06-14 12:17:12,368 INFO L175 Difference]: Start difference. First operand has 54 places, 43 transitions, 220 flow. Second operand 7 states and 99 transitions. [2024-06-14 12:17:12,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 52 transitions, 338 flow [2024-06-14 12:17:12,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 52 transitions, 311 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-14 12:17:12,370 INFO L231 Difference]: Finished difference. Result has 57 places, 45 transitions, 232 flow [2024-06-14 12:17:12,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=232, PETRI_PLACES=57, PETRI_TRANSITIONS=45} [2024-06-14 12:17:12,370 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 24 predicate places. [2024-06-14 12:17:12,370 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 45 transitions, 232 flow [2024-06-14 12:17:12,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:12,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:17:12,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:17:12,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-14 12:17:12,371 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:17:12,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:17:12,371 INFO L85 PathProgramCache]: Analyzing trace with hash 245194100, now seen corresponding path program 1 times [2024-06-14 12:17:12,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:17:12,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104668900] [2024-06-14 12:17:12,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:17:12,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:17:12,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:17:12,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:17:12,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:17:12,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104668900] [2024-06-14 12:17:12,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104668900] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:17:12,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:17:12,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:17:12,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102630432] [2024-06-14 12:17:12,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:17:12,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:17:12,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:17:12,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:17:12,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:17:13,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-06-14 12:17:13,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 45 transitions, 232 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:13,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:17:13,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-06-14 12:17:13,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:17:13,290 INFO L124 PetriNetUnfolderBase]: 220/411 cut-off events. [2024-06-14 12:17:13,290 INFO L125 PetriNetUnfolderBase]: For 2523/2523 co-relation queries the response was YES. [2024-06-14 12:17:13,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1627 conditions, 411 events. 220/411 cut-off events. For 2523/2523 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1545 event pairs, 55 based on Foata normal form. 1/412 useless extension candidates. Maximal degree in co-relation 1600. Up to 356 conditions per place. [2024-06-14 12:17:13,293 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 45 selfloop transitions, 10 changer transitions 0/60 dead transitions. [2024-06-14 12:17:13,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 60 transitions, 386 flow [2024-06-14 12:17:13,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:17:13,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:17:13,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 99 transitions. [2024-06-14 12:17:13,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41596638655462187 [2024-06-14 12:17:13,294 INFO L175 Difference]: Start difference. First operand has 57 places, 45 transitions, 232 flow. Second operand 7 states and 99 transitions. [2024-06-14 12:17:13,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 60 transitions, 386 flow [2024-06-14 12:17:13,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 60 transitions, 363 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-14 12:17:13,297 INFO L231 Difference]: Finished difference. Result has 59 places, 47 transitions, 250 flow [2024-06-14 12:17:13,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=250, PETRI_PLACES=59, PETRI_TRANSITIONS=47} [2024-06-14 12:17:13,297 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 26 predicate places. [2024-06-14 12:17:13,298 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 47 transitions, 250 flow [2024-06-14 12:17:13,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:13,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:17:13,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:17:13,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-14 12:17:13,298 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:17:13,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:17:13,299 INFO L85 PathProgramCache]: Analyzing trace with hash -387978126, now seen corresponding path program 1 times [2024-06-14 12:17:13,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:17:13,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233094413] [2024-06-14 12:17:13,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:17:13,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:17:13,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:17:14,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:17:14,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:17:14,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233094413] [2024-06-14 12:17:14,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233094413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:17:14,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:17:14,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:17:14,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969613969] [2024-06-14 12:17:14,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:17:14,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:17:14,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:17:14,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:17:14,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:17:14,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-06-14 12:17:14,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 47 transitions, 250 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:14,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:17:14,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-06-14 12:17:14,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:17:14,287 INFO L124 PetriNetUnfolderBase]: 223/416 cut-off events. [2024-06-14 12:17:14,287 INFO L125 PetriNetUnfolderBase]: For 2900/2900 co-relation queries the response was YES. [2024-06-14 12:17:14,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1713 conditions, 416 events. 223/416 cut-off events. For 2900/2900 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1577 event pairs, 56 based on Foata normal form. 1/417 useless extension candidates. Maximal degree in co-relation 1685. Up to 372 conditions per place. [2024-06-14 12:17:14,290 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 43 selfloop transitions, 10 changer transitions 0/59 dead transitions. [2024-06-14 12:17:14,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 59 transitions, 392 flow [2024-06-14 12:17:14,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:17:14,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:17:14,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 96 transitions. [2024-06-14 12:17:14,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40336134453781514 [2024-06-14 12:17:14,291 INFO L175 Difference]: Start difference. First operand has 59 places, 47 transitions, 250 flow. Second operand 7 states and 96 transitions. [2024-06-14 12:17:14,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 59 transitions, 392 flow [2024-06-14 12:17:14,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 59 transitions, 367 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-14 12:17:14,294 INFO L231 Difference]: Finished difference. Result has 61 places, 49 transitions, 266 flow [2024-06-14 12:17:14,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=266, PETRI_PLACES=61, PETRI_TRANSITIONS=49} [2024-06-14 12:17:14,295 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 28 predicate places. [2024-06-14 12:17:14,295 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 49 transitions, 266 flow [2024-06-14 12:17:14,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:14,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:17:14,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:17:14,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-14 12:17:14,295 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:17:14,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:17:14,296 INFO L85 PathProgramCache]: Analyzing trace with hash 245373590, now seen corresponding path program 2 times [2024-06-14 12:17:14,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:17:14,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696726951] [2024-06-14 12:17:14,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:17:14,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:17:14,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:17:14,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:17:14,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:17:14,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696726951] [2024-06-14 12:17:14,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696726951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:17:14,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:17:14,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:17:14,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704688482] [2024-06-14 12:17:14,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:17:14,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:17:14,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:17:14,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:17:14,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:17:15,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-06-14 12:17:15,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 49 transitions, 266 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:15,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:17:15,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-06-14 12:17:15,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:17:15,246 INFO L124 PetriNetUnfolderBase]: 228/423 cut-off events. [2024-06-14 12:17:15,246 INFO L125 PetriNetUnfolderBase]: For 3537/3537 co-relation queries the response was YES. [2024-06-14 12:17:15,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1828 conditions, 423 events. 228/423 cut-off events. For 3537/3537 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1595 event pairs, 54 based on Foata normal form. 1/424 useless extension candidates. Maximal degree in co-relation 1799. Up to 360 conditions per place. [2024-06-14 12:17:15,249 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 42 selfloop transitions, 13 changer transitions 0/61 dead transitions. [2024-06-14 12:17:15,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 61 transitions, 416 flow [2024-06-14 12:17:15,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:17:15,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:17:15,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 98 transitions. [2024-06-14 12:17:15,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4117647058823529 [2024-06-14 12:17:15,251 INFO L175 Difference]: Start difference. First operand has 61 places, 49 transitions, 266 flow. Second operand 7 states and 98 transitions. [2024-06-14 12:17:15,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 61 transitions, 416 flow [2024-06-14 12:17:15,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 61 transitions, 391 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-14 12:17:15,254 INFO L231 Difference]: Finished difference. Result has 63 places, 51 transitions, 292 flow [2024-06-14 12:17:15,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=292, PETRI_PLACES=63, PETRI_TRANSITIONS=51} [2024-06-14 12:17:15,255 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 30 predicate places. [2024-06-14 12:17:15,255 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 51 transitions, 292 flow [2024-06-14 12:17:15,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:15,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:17:15,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:17:15,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-14 12:17:15,256 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:17:15,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:17:15,256 INFO L85 PathProgramCache]: Analyzing trace with hash -379703916, now seen corresponding path program 2 times [2024-06-14 12:17:15,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:17:15,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491003283] [2024-06-14 12:17:15,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:17:15,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:17:15,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:17:16,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:17:16,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:17:16,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491003283] [2024-06-14 12:17:16,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491003283] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:17:16,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:17:16,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:17:16,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025250549] [2024-06-14 12:17:16,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:17:16,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:17:16,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:17:16,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:17:16,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:17:16,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-06-14 12:17:16,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 51 transitions, 292 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:16,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:17:16,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-06-14 12:17:16,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:17:16,297 INFO L124 PetriNetUnfolderBase]: 229/427 cut-off events. [2024-06-14 12:17:16,297 INFO L125 PetriNetUnfolderBase]: For 4050/4052 co-relation queries the response was YES. [2024-06-14 12:17:16,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1904 conditions, 427 events. 229/427 cut-off events. For 4050/4052 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1636 event pairs, 60 based on Foata normal form. 3/430 useless extension candidates. Maximal degree in co-relation 1874. Up to 364 conditions per place. [2024-06-14 12:17:16,300 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 39 selfloop transitions, 17 changer transitions 0/63 dead transitions. [2024-06-14 12:17:16,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 63 transitions, 480 flow [2024-06-14 12:17:16,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:17:16,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:17:16,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 98 transitions. [2024-06-14 12:17:16,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4117647058823529 [2024-06-14 12:17:16,302 INFO L175 Difference]: Start difference. First operand has 63 places, 51 transitions, 292 flow. Second operand 7 states and 98 transitions. [2024-06-14 12:17:16,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 63 transitions, 480 flow [2024-06-14 12:17:16,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 63 transitions, 445 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-14 12:17:16,305 INFO L231 Difference]: Finished difference. Result has 65 places, 55 transitions, 332 flow [2024-06-14 12:17:16,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=332, PETRI_PLACES=65, PETRI_TRANSITIONS=55} [2024-06-14 12:17:16,306 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 32 predicate places. [2024-06-14 12:17:16,306 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 55 transitions, 332 flow [2024-06-14 12:17:16,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:16,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:17:16,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:17:16,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-14 12:17:16,306 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:17:16,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:17:16,307 INFO L85 PathProgramCache]: Analyzing trace with hash -379704164, now seen corresponding path program 3 times [2024-06-14 12:17:16,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:17:16,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536403811] [2024-06-14 12:17:16,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:17:16,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:17:16,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:17:17,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:17:17,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:17:17,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536403811] [2024-06-14 12:17:17,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536403811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:17:17,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:17:17,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:17:17,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714683132] [2024-06-14 12:17:17,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:17:17,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:17:17,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:17:17,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:17:17,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:17:17,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-06-14 12:17:17,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 55 transitions, 332 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:17,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:17:17,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-06-14 12:17:17,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:17:17,267 INFO L124 PetriNetUnfolderBase]: 229/427 cut-off events. [2024-06-14 12:17:17,267 INFO L125 PetriNetUnfolderBase]: For 4765/4767 co-relation queries the response was YES. [2024-06-14 12:17:17,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1981 conditions, 427 events. 229/427 cut-off events. For 4765/4767 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1622 event pairs, 62 based on Foata normal form. 3/430 useless extension candidates. Maximal degree in co-relation 1950. Up to 351 conditions per place. [2024-06-14 12:17:17,269 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 39 selfloop transitions, 17 changer transitions 0/64 dead transitions. [2024-06-14 12:17:17,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 64 transitions, 480 flow [2024-06-14 12:17:17,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:17:17,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:17:17,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 97 transitions. [2024-06-14 12:17:17,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40756302521008403 [2024-06-14 12:17:17,271 INFO L175 Difference]: Start difference. First operand has 65 places, 55 transitions, 332 flow. Second operand 7 states and 97 transitions. [2024-06-14 12:17:17,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 64 transitions, 480 flow [2024-06-14 12:17:17,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 64 transitions, 454 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-14 12:17:17,274 INFO L231 Difference]: Finished difference. Result has 69 places, 57 transitions, 369 flow [2024-06-14 12:17:17,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=369, PETRI_PLACES=69, PETRI_TRANSITIONS=57} [2024-06-14 12:17:17,275 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 36 predicate places. [2024-06-14 12:17:17,275 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 57 transitions, 369 flow [2024-06-14 12:17:17,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:17,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:17:17,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:17:17,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-14 12:17:17,277 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:17:17,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:17:17,277 INFO L85 PathProgramCache]: Analyzing trace with hash -379407246, now seen corresponding path program 3 times [2024-06-14 12:17:17,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:17:17,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805388373] [2024-06-14 12:17:17,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:17:17,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:17:17,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:17:17,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:17:17,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:17:17,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805388373] [2024-06-14 12:17:17,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805388373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:17:17,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:17:17,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:17:17,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428617030] [2024-06-14 12:17:17,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:17:17,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:17:17,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:17:17,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:17:17,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:17:17,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-06-14 12:17:17,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 57 transitions, 369 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:17,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:17:17,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-06-14 12:17:17,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:17:18,151 INFO L124 PetriNetUnfolderBase]: 225/421 cut-off events. [2024-06-14 12:17:18,152 INFO L125 PetriNetUnfolderBase]: For 5092/5094 co-relation queries the response was YES. [2024-06-14 12:17:18,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2007 conditions, 421 events. 225/421 cut-off events. For 5092/5094 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1629 event pairs, 60 based on Foata normal form. 3/424 useless extension candidates. Maximal degree in co-relation 1974. Up to 360 conditions per place. [2024-06-14 12:17:18,154 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 38 selfloop transitions, 18 changer transitions 0/64 dead transitions. [2024-06-14 12:17:18,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 64 transitions, 497 flow [2024-06-14 12:17:18,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:17:18,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:17:18,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 96 transitions. [2024-06-14 12:17:18,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40336134453781514 [2024-06-14 12:17:18,156 INFO L175 Difference]: Start difference. First operand has 69 places, 57 transitions, 369 flow. Second operand 7 states and 96 transitions. [2024-06-14 12:17:18,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 64 transitions, 497 flow [2024-06-14 12:17:18,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 64 transitions, 440 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-14 12:17:18,160 INFO L231 Difference]: Finished difference. Result has 71 places, 57 transitions, 353 flow [2024-06-14 12:17:18,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=353, PETRI_PLACES=71, PETRI_TRANSITIONS=57} [2024-06-14 12:17:18,160 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 38 predicate places. [2024-06-14 12:17:18,161 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 57 transitions, 353 flow [2024-06-14 12:17:18,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:18,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:17:18,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:17:18,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-14 12:17:18,162 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:17:18,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:17:18,162 INFO L85 PathProgramCache]: Analyzing trace with hash 2091610885, now seen corresponding path program 1 times [2024-06-14 12:17:18,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:17:18,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064164175] [2024-06-14 12:17:18,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:17:18,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:17:18,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:17:18,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:17:18,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:17:18,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064164175] [2024-06-14 12:17:18,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064164175] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:17:18,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:17:18,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:17:18,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989811912] [2024-06-14 12:17:18,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:17:18,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:17:18,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:17:18,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:17:18,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:17:18,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-06-14 12:17:18,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 57 transitions, 353 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:18,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:17:18,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-06-14 12:17:18,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:17:19,214 INFO L124 PetriNetUnfolderBase]: 253/472 cut-off events. [2024-06-14 12:17:19,214 INFO L125 PetriNetUnfolderBase]: For 6146/6146 co-relation queries the response was YES. [2024-06-14 12:17:19,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2261 conditions, 472 events. 253/472 cut-off events. For 6146/6146 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1873 event pairs, 54 based on Foata normal form. 2/474 useless extension candidates. Maximal degree in co-relation 2227. Up to 378 conditions per place. [2024-06-14 12:17:19,220 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 57 selfloop transitions, 20 changer transitions 0/85 dead transitions. [2024-06-14 12:17:19,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 85 transitions, 632 flow [2024-06-14 12:17:19,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:17:19,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:17:19,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 126 transitions. [2024-06-14 12:17:19,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4117647058823529 [2024-06-14 12:17:19,222 INFO L175 Difference]: Start difference. First operand has 71 places, 57 transitions, 353 flow. Second operand 9 states and 126 transitions. [2024-06-14 12:17:19,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 85 transitions, 632 flow [2024-06-14 12:17:19,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 85 transitions, 587 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-14 12:17:19,231 INFO L231 Difference]: Finished difference. Result has 77 places, 69 transitions, 454 flow [2024-06-14 12:17:19,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=454, PETRI_PLACES=77, PETRI_TRANSITIONS=69} [2024-06-14 12:17:19,231 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 44 predicate places. [2024-06-14 12:17:19,231 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 69 transitions, 454 flow [2024-06-14 12:17:19,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:19,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:17:19,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:17:19,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-14 12:17:19,232 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:17:19,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:17:19,232 INFO L85 PathProgramCache]: Analyzing trace with hash 871269377, now seen corresponding path program 2 times [2024-06-14 12:17:19,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:17:19,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241314310] [2024-06-14 12:17:19,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:17:19,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:17:19,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:17:19,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:17:19,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:17:19,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241314310] [2024-06-14 12:17:19,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241314310] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:17:19,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:17:19,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:17:19,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432884159] [2024-06-14 12:17:19,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:17:19,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:17:19,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:17:19,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:17:19,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:17:19,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-06-14 12:17:19,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 69 transitions, 454 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:19,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:17:19,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-06-14 12:17:19,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:17:20,235 INFO L124 PetriNetUnfolderBase]: 259/483 cut-off events. [2024-06-14 12:17:20,235 INFO L125 PetriNetUnfolderBase]: For 7073/7075 co-relation queries the response was YES. [2024-06-14 12:17:20,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2452 conditions, 483 events. 259/483 cut-off events. For 7073/7075 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1919 event pairs, 53 based on Foata normal form. 4/487 useless extension candidates. Maximal degree in co-relation 2414. Up to 380 conditions per place. [2024-06-14 12:17:20,238 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 57 selfloop transitions, 23 changer transitions 0/88 dead transitions. [2024-06-14 12:17:20,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 88 transitions, 690 flow [2024-06-14 12:17:20,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:17:20,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:17:20,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 114 transitions. [2024-06-14 12:17:20,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41911764705882354 [2024-06-14 12:17:20,240 INFO L175 Difference]: Start difference. First operand has 77 places, 69 transitions, 454 flow. Second operand 8 states and 114 transitions. [2024-06-14 12:17:20,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 88 transitions, 690 flow [2024-06-14 12:17:20,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 88 transitions, 657 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-14 12:17:20,245 INFO L231 Difference]: Finished difference. Result has 82 places, 71 transitions, 502 flow [2024-06-14 12:17:20,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=502, PETRI_PLACES=82, PETRI_TRANSITIONS=71} [2024-06-14 12:17:20,246 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 49 predicate places. [2024-06-14 12:17:20,246 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 71 transitions, 502 flow [2024-06-14 12:17:20,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:20,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:17:20,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:17:20,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-14 12:17:20,246 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:17:20,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:17:20,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1429561609, now seen corresponding path program 3 times [2024-06-14 12:17:20,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:17:20,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722651180] [2024-06-14 12:17:20,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:17:20,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:17:20,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:17:20,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:17:20,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:17:20,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722651180] [2024-06-14 12:17:20,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722651180] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:17:20,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:17:20,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:17:20,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620780471] [2024-06-14 12:17:20,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:17:20,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:17:20,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:17:20,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:17:20,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:17:21,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-06-14 12:17:21,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 71 transitions, 502 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:21,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:17:21,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-06-14 12:17:21,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:17:21,264 INFO L124 PetriNetUnfolderBase]: 265/496 cut-off events. [2024-06-14 12:17:21,264 INFO L125 PetriNetUnfolderBase]: For 8034/8034 co-relation queries the response was YES. [2024-06-14 12:17:21,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2607 conditions, 496 events. 265/496 cut-off events. For 8034/8034 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1990 event pairs, 56 based on Foata normal form. 2/498 useless extension candidates. Maximal degree in co-relation 2568. Up to 377 conditions per place. [2024-06-14 12:17:21,268 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 55 selfloop transitions, 25 changer transitions 0/88 dead transitions. [2024-06-14 12:17:21,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 88 transitions, 734 flow [2024-06-14 12:17:21,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:17:21,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:17:21,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 114 transitions. [2024-06-14 12:17:21,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41911764705882354 [2024-06-14 12:17:21,269 INFO L175 Difference]: Start difference. First operand has 82 places, 71 transitions, 502 flow. Second operand 8 states and 114 transitions. [2024-06-14 12:17:21,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 88 transitions, 734 flow [2024-06-14 12:17:21,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 88 transitions, 671 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-14 12:17:21,296 INFO L231 Difference]: Finished difference. Result has 84 places, 73 transitions, 524 flow [2024-06-14 12:17:21,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=443, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=524, PETRI_PLACES=84, PETRI_TRANSITIONS=73} [2024-06-14 12:17:21,296 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 51 predicate places. [2024-06-14 12:17:21,296 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 73 transitions, 524 flow [2024-06-14 12:17:21,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:21,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:17:21,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:17:21,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-14 12:17:21,297 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:17:21,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:17:21,298 INFO L85 PathProgramCache]: Analyzing trace with hash -988916800, now seen corresponding path program 1 times [2024-06-14 12:17:21,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:17:21,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959604710] [2024-06-14 12:17:21,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:17:21,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:17:21,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:17:21,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:17:21,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:17:21,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959604710] [2024-06-14 12:17:21,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959604710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:17:21,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:17:21,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:17:21,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778013154] [2024-06-14 12:17:21,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:17:21,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:17:21,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:17:21,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:17:21,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:17:22,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:17:22,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 73 transitions, 524 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:22,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:17:22,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:17:22,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:17:22,274 INFO L124 PetriNetUnfolderBase]: 283/515 cut-off events. [2024-06-14 12:17:22,275 INFO L125 PetriNetUnfolderBase]: For 7789/7791 co-relation queries the response was YES. [2024-06-14 12:17:22,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2679 conditions, 515 events. 283/515 cut-off events. For 7789/7791 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2039 event pairs, 54 based on Foata normal form. 3/518 useless extension candidates. Maximal degree in co-relation 2639. Up to 456 conditions per place. [2024-06-14 12:17:22,280 INFO L140 encePairwiseOnDemand]: 25/34 looper letters, 69 selfloop transitions, 17 changer transitions 0/89 dead transitions. [2024-06-14 12:17:22,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 89 transitions, 758 flow [2024-06-14 12:17:22,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:17:22,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:17:22,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-14 12:17:22,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3786764705882353 [2024-06-14 12:17:22,282 INFO L175 Difference]: Start difference. First operand has 84 places, 73 transitions, 524 flow. Second operand 8 states and 103 transitions. [2024-06-14 12:17:22,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 89 transitions, 758 flow [2024-06-14 12:17:22,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 89 transitions, 693 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-14 12:17:22,289 INFO L231 Difference]: Finished difference. Result has 86 places, 75 transitions, 520 flow [2024-06-14 12:17:22,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=520, PETRI_PLACES=86, PETRI_TRANSITIONS=75} [2024-06-14 12:17:22,290 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 53 predicate places. [2024-06-14 12:17:22,290 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 75 transitions, 520 flow [2024-06-14 12:17:22,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:22,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:17:22,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:17:22,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-14 12:17:22,291 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:17:22,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:17:22,291 INFO L85 PathProgramCache]: Analyzing trace with hash -983345170, now seen corresponding path program 2 times [2024-06-14 12:17:22,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:17:22,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617906586] [2024-06-14 12:17:22,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:17:22,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:17:22,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:17:22,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:17:22,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:17:22,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617906586] [2024-06-14 12:17:22,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617906586] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:17:22,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:17:22,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:17:22,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605747163] [2024-06-14 12:17:22,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:17:22,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:17:22,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:17:22,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:17:22,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:17:23,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:17:23,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 75 transitions, 520 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:23,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:17:23,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:17:23,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:17:23,303 INFO L124 PetriNetUnfolderBase]: 291/528 cut-off events. [2024-06-14 12:17:23,304 INFO L125 PetriNetUnfolderBase]: For 8655/8657 co-relation queries the response was YES. [2024-06-14 12:17:23,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2799 conditions, 528 events. 291/528 cut-off events. For 8655/8657 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2113 event pairs, 56 based on Foata normal form. 3/531 useless extension candidates. Maximal degree in co-relation 2758. Up to 451 conditions per place. [2024-06-14 12:17:23,306 INFO L140 encePairwiseOnDemand]: 25/34 looper letters, 64 selfloop transitions, 24 changer transitions 0/91 dead transitions. [2024-06-14 12:17:23,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 91 transitions, 812 flow [2024-06-14 12:17:23,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:17:23,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:17:23,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-14 12:17:23,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38235294117647056 [2024-06-14 12:17:23,308 INFO L175 Difference]: Start difference. First operand has 86 places, 75 transitions, 520 flow. Second operand 8 states and 104 transitions. [2024-06-14 12:17:23,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 91 transitions, 812 flow [2024-06-14 12:17:23,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 91 transitions, 767 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-14 12:17:23,314 INFO L231 Difference]: Finished difference. Result has 88 places, 79 transitions, 576 flow [2024-06-14 12:17:23,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=576, PETRI_PLACES=88, PETRI_TRANSITIONS=79} [2024-06-14 12:17:23,315 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 55 predicate places. [2024-06-14 12:17:23,315 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 79 transitions, 576 flow [2024-06-14 12:17:23,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:23,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:17:23,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:17:23,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-14 12:17:23,316 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:17:23,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:17:23,316 INFO L85 PathProgramCache]: Analyzing trace with hash -983344891, now seen corresponding path program 1 times [2024-06-14 12:17:23,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:17:23,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392816604] [2024-06-14 12:17:23,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:17:23,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:17:23,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:17:24,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:17:24,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:17:24,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392816604] [2024-06-14 12:17:24,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392816604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:17:24,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:17:24,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:17:24,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428138649] [2024-06-14 12:17:24,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:17:24,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:17:24,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:17:24,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:17:24,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:17:24,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-06-14 12:17:24,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 79 transitions, 576 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:24,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:17:24,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-06-14 12:17:24,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:17:24,361 INFO L124 PetriNetUnfolderBase]: 273/509 cut-off events. [2024-06-14 12:17:24,362 INFO L125 PetriNetUnfolderBase]: For 9561/9565 co-relation queries the response was YES. [2024-06-14 12:17:24,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2738 conditions, 509 events. 273/509 cut-off events. For 9561/9565 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2072 event pairs, 53 based on Foata normal form. 5/514 useless extension candidates. Maximal degree in co-relation 2696. Up to 437 conditions per place. [2024-06-14 12:17:24,365 INFO L140 encePairwiseOnDemand]: 25/34 looper letters, 66 selfloop transitions, 14 changer transitions 0/92 dead transitions. [2024-06-14 12:17:24,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 92 transitions, 782 flow [2024-06-14 12:17:24,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:17:24,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:17:24,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 107 transitions. [2024-06-14 12:17:24,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39338235294117646 [2024-06-14 12:17:24,367 INFO L175 Difference]: Start difference. First operand has 88 places, 79 transitions, 576 flow. Second operand 8 states and 107 transitions. [2024-06-14 12:17:24,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 92 transitions, 782 flow [2024-06-14 12:17:24,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 92 transitions, 741 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-14 12:17:24,374 INFO L231 Difference]: Finished difference. Result has 92 places, 81 transitions, 586 flow [2024-06-14 12:17:24,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=535, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=586, PETRI_PLACES=92, PETRI_TRANSITIONS=81} [2024-06-14 12:17:24,374 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 59 predicate places. [2024-06-14 12:17:24,374 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 81 transitions, 586 flow [2024-06-14 12:17:24,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:24,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:17:24,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:17:24,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-14 12:17:24,375 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:17:24,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:17:24,375 INFO L85 PathProgramCache]: Analyzing trace with hash -983352827, now seen corresponding path program 4 times [2024-06-14 12:17:24,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:17:24,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628728846] [2024-06-14 12:17:24,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:17:24,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:17:24,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:17:25,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:17:25,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:17:25,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628728846] [2024-06-14 12:17:25,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628728846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:17:25,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:17:25,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:17:25,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280938802] [2024-06-14 12:17:25,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:17:25,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:17:25,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:17:25,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:17:25,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:17:25,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-06-14 12:17:25,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 81 transitions, 586 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:25,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:17:25,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-06-14 12:17:25,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:17:25,386 INFO L124 PetriNetUnfolderBase]: 286/532 cut-off events. [2024-06-14 12:17:25,387 INFO L125 PetriNetUnfolderBase]: For 10934/10934 co-relation queries the response was YES. [2024-06-14 12:17:25,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2979 conditions, 532 events. 286/532 cut-off events. For 10934/10934 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2191 event pairs, 58 based on Foata normal form. 2/534 useless extension candidates. Maximal degree in co-relation 2935. Up to 390 conditions per place. [2024-06-14 12:17:25,390 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 56 selfloop transitions, 28 changer transitions 0/95 dead transitions. [2024-06-14 12:17:25,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 95 transitions, 814 flow [2024-06-14 12:17:25,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:17:25,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:17:25,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 113 transitions. [2024-06-14 12:17:25,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41544117647058826 [2024-06-14 12:17:25,393 INFO L175 Difference]: Start difference. First operand has 92 places, 81 transitions, 586 flow. Second operand 8 states and 113 transitions. [2024-06-14 12:17:25,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 95 transitions, 814 flow [2024-06-14 12:17:25,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 95 transitions, 779 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-14 12:17:25,403 INFO L231 Difference]: Finished difference. Result has 94 places, 83 transitions, 642 flow [2024-06-14 12:17:25,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=551, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=642, PETRI_PLACES=94, PETRI_TRANSITIONS=83} [2024-06-14 12:17:25,404 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 61 predicate places. [2024-06-14 12:17:25,404 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 83 transitions, 642 flow [2024-06-14 12:17:25,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:25,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:17:25,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:17:25,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-14 12:17:25,405 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:17:25,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:17:25,405 INFO L85 PathProgramCache]: Analyzing trace with hash -983352610, now seen corresponding path program 3 times [2024-06-14 12:17:25,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:17:25,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407580469] [2024-06-14 12:17:25,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:17:25,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:17:25,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:17:26,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:17:26,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:17:26,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407580469] [2024-06-14 12:17:26,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407580469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:17:26,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:17:26,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:17:26,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828037462] [2024-06-14 12:17:26,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:17:26,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:17:26,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:17:26,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:17:26,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:17:26,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:17:26,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 83 transitions, 642 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:26,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:17:26,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:17:26,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:17:26,413 INFO L124 PetriNetUnfolderBase]: 298/542 cut-off events. [2024-06-14 12:17:26,413 INFO L125 PetriNetUnfolderBase]: For 11280/11282 co-relation queries the response was YES. [2024-06-14 12:17:26,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3117 conditions, 542 events. 298/542 cut-off events. For 11280/11282 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2176 event pairs, 55 based on Foata normal form. 3/545 useless extension candidates. Maximal degree in co-relation 3072. Up to 464 conditions per place. [2024-06-14 12:17:26,419 INFO L140 encePairwiseOnDemand]: 25/34 looper letters, 68 selfloop transitions, 23 changer transitions 0/94 dead transitions. [2024-06-14 12:17:26,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 94 transitions, 856 flow [2024-06-14 12:17:26,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:17:26,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:17:26,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-14 12:17:26,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38235294117647056 [2024-06-14 12:17:26,421 INFO L175 Difference]: Start difference. First operand has 94 places, 83 transitions, 642 flow. Second operand 8 states and 104 transitions. [2024-06-14 12:17:26,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 94 transitions, 856 flow [2024-06-14 12:17:26,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 94 transitions, 771 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-14 12:17:26,430 INFO L231 Difference]: Finished difference. Result has 96 places, 83 transitions, 608 flow [2024-06-14 12:17:26,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=557, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=608, PETRI_PLACES=96, PETRI_TRANSITIONS=83} [2024-06-14 12:17:26,431 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 63 predicate places. [2024-06-14 12:17:26,431 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 83 transitions, 608 flow [2024-06-14 12:17:26,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:26,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:17:26,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:17:26,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-14 12:17:26,431 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:17:26,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:17:26,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1114073279, now seen corresponding path program 5 times [2024-06-14 12:17:26,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:17:26,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816862135] [2024-06-14 12:17:26,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:17:26,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:17:26,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:17:27,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:17:27,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:17:27,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816862135] [2024-06-14 12:17:27,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816862135] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:17:27,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:17:27,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:17:27,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912829658] [2024-06-14 12:17:27,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:17:27,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:17:27,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:17:27,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:17:27,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:17:27,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-06-14 12:17:27,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 83 transitions, 608 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:27,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:17:27,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-06-14 12:17:27,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:17:27,399 INFO L124 PetriNetUnfolderBase]: 285/534 cut-off events. [2024-06-14 12:17:27,399 INFO L125 PetriNetUnfolderBase]: For 12344/12348 co-relation queries the response was YES. [2024-06-14 12:17:27,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3036 conditions, 534 events. 285/534 cut-off events. For 12344/12348 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2199 event pairs, 67 based on Foata normal form. 2/536 useless extension candidates. Maximal degree in co-relation 2990. Up to 375 conditions per place. [2024-06-14 12:17:27,403 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 51 selfloop transitions, 33 changer transitions 0/95 dead transitions. [2024-06-14 12:17:27,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 95 transitions, 834 flow [2024-06-14 12:17:27,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:17:27,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:17:27,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 112 transitions. [2024-06-14 12:17:27,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4117647058823529 [2024-06-14 12:17:27,407 INFO L175 Difference]: Start difference. First operand has 96 places, 83 transitions, 608 flow. Second operand 8 states and 112 transitions. [2024-06-14 12:17:27,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 95 transitions, 834 flow [2024-06-14 12:17:27,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 95 transitions, 774 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-14 12:17:27,417 INFO L231 Difference]: Finished difference. Result has 97 places, 85 transitions, 653 flow [2024-06-14 12:17:27,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=653, PETRI_PLACES=97, PETRI_TRANSITIONS=85} [2024-06-14 12:17:27,417 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 64 predicate places. [2024-06-14 12:17:27,417 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 85 transitions, 653 flow [2024-06-14 12:17:27,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:27,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:17:27,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:17:27,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-14 12:17:27,418 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:17:27,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:17:27,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1114073496, now seen corresponding path program 4 times [2024-06-14 12:17:27,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:17:27,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752634028] [2024-06-14 12:17:27,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:17:27,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:17:27,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:17:28,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:17:28,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:17:28,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752634028] [2024-06-14 12:17:28,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752634028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:17:28,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:17:28,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:17:28,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112255546] [2024-06-14 12:17:28,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:17:28,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:17:28,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:17:28,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:17:28,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:17:28,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:17:28,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 85 transitions, 653 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:28,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:17:28,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:17:28,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:17:28,399 INFO L124 PetriNetUnfolderBase]: 302/553 cut-off events. [2024-06-14 12:17:28,400 INFO L125 PetriNetUnfolderBase]: For 13009/13013 co-relation queries the response was YES. [2024-06-14 12:17:28,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3226 conditions, 553 events. 302/553 cut-off events. For 13009/13013 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2254 event pairs, 61 based on Foata normal form. 5/558 useless extension candidates. Maximal degree in co-relation 3179. Up to 444 conditions per place. [2024-06-14 12:17:28,403 INFO L140 encePairwiseOnDemand]: 25/34 looper letters, 63 selfloop transitions, 33 changer transitions 0/99 dead transitions. [2024-06-14 12:17:28,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 99 transitions, 973 flow [2024-06-14 12:17:28,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:17:28,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:17:28,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2024-06-14 12:17:28,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3860294117647059 [2024-06-14 12:17:28,405 INFO L175 Difference]: Start difference. First operand has 97 places, 85 transitions, 653 flow. Second operand 8 states and 105 transitions. [2024-06-14 12:17:28,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 99 transitions, 973 flow [2024-06-14 12:17:28,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 99 transitions, 884 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-14 12:17:28,416 INFO L231 Difference]: Finished difference. Result has 99 places, 89 transitions, 691 flow [2024-06-14 12:17:28,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=691, PETRI_PLACES=99, PETRI_TRANSITIONS=89} [2024-06-14 12:17:28,416 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 66 predicate places. [2024-06-14 12:17:28,416 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 89 transitions, 691 flow [2024-06-14 12:17:28,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:28,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:17:28,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:17:28,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-14 12:17:28,417 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:17:28,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:17:28,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1114081215, now seen corresponding path program 2 times [2024-06-14 12:17:28,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:17:28,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382816398] [2024-06-14 12:17:28,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:17:28,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:17:28,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:17:29,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:17:29,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:17:29,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382816398] [2024-06-14 12:17:29,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382816398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:17:29,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:17:29,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:17:29,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388034205] [2024-06-14 12:17:29,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:17:29,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:17:29,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:17:29,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:17:29,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:17:29,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-06-14 12:17:29,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 89 transitions, 691 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:29,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:17:29,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-06-14 12:17:29,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:17:29,424 INFO L124 PetriNetUnfolderBase]: 285/534 cut-off events. [2024-06-14 12:17:29,424 INFO L125 PetriNetUnfolderBase]: For 13878/13884 co-relation queries the response was YES. [2024-06-14 12:17:29,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3111 conditions, 534 events. 285/534 cut-off events. For 13878/13884 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2217 event pairs, 56 based on Foata normal form. 7/541 useless extension candidates. Maximal degree in co-relation 3063. Up to 427 conditions per place. [2024-06-14 12:17:29,427 INFO L140 encePairwiseOnDemand]: 25/34 looper letters, 67 selfloop transitions, 24 changer transitions 0/105 dead transitions. [2024-06-14 12:17:29,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 105 transitions, 995 flow [2024-06-14 12:17:29,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:17:29,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:17:29,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 111 transitions. [2024-06-14 12:17:29,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40808823529411764 [2024-06-14 12:17:29,428 INFO L175 Difference]: Start difference. First operand has 99 places, 89 transitions, 691 flow. Second operand 8 states and 111 transitions. [2024-06-14 12:17:29,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 105 transitions, 995 flow [2024-06-14 12:17:29,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 105 transitions, 914 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-14 12:17:29,438 INFO L231 Difference]: Finished difference. Result has 103 places, 95 transitions, 724 flow [2024-06-14 12:17:29,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=724, PETRI_PLACES=103, PETRI_TRANSITIONS=95} [2024-06-14 12:17:29,439 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 70 predicate places. [2024-06-14 12:17:29,439 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 95 transitions, 724 flow [2024-06-14 12:17:29,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:29,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:17:29,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:17:29,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-14 12:17:29,439 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:17:29,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:17:29,439 INFO L85 PathProgramCache]: Analyzing trace with hash 216827090, now seen corresponding path program 5 times [2024-06-14 12:17:29,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:17:29,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171490973] [2024-06-14 12:17:29,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:17:29,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:17:29,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:17:30,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:17:30,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:17:30,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171490973] [2024-06-14 12:17:30,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171490973] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:17:30,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:17:30,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:17:30,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631072729] [2024-06-14 12:17:30,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:17:30,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:17:30,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:17:30,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:17:30,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:17:30,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:17:30,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 95 transitions, 724 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:30,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:17:30,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:17:30,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:17:30,397 INFO L124 PetriNetUnfolderBase]: 308/563 cut-off events. [2024-06-14 12:17:30,397 INFO L125 PetriNetUnfolderBase]: For 14862/14866 co-relation queries the response was YES. [2024-06-14 12:17:30,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3342 conditions, 563 events. 308/563 cut-off events. For 14862/14866 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2292 event pairs, 61 based on Foata normal form. 5/568 useless extension candidates. Maximal degree in co-relation 3292. Up to 453 conditions per place. [2024-06-14 12:17:30,401 INFO L140 encePairwiseOnDemand]: 25/34 looper letters, 70 selfloop transitions, 34 changer transitions 0/107 dead transitions. [2024-06-14 12:17:30,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 107 transitions, 1036 flow [2024-06-14 12:17:30,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:17:30,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:17:30,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 106 transitions. [2024-06-14 12:17:30,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3897058823529412 [2024-06-14 12:17:30,401 INFO L175 Difference]: Start difference. First operand has 103 places, 95 transitions, 724 flow. Second operand 8 states and 106 transitions. [2024-06-14 12:17:30,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 107 transitions, 1036 flow [2024-06-14 12:17:30,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 107 transitions, 1011 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-14 12:17:30,413 INFO L231 Difference]: Finished difference. Result has 108 places, 97 transitions, 796 flow [2024-06-14 12:17:30,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=699, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=796, PETRI_PLACES=108, PETRI_TRANSITIONS=97} [2024-06-14 12:17:30,413 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 75 predicate places. [2024-06-14 12:17:30,413 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 97 transitions, 796 flow [2024-06-14 12:17:30,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:30,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:17:30,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:17:30,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-14 12:17:30,414 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:17:30,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:17:30,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1123604415, now seen corresponding path program 3 times [2024-06-14 12:17:30,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:17:30,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84135227] [2024-06-14 12:17:30,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:17:30,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:17:30,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:17:31,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:17:31,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:17:31,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84135227] [2024-06-14 12:17:31,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84135227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:17:31,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:17:31,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:17:31,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961165194] [2024-06-14 12:17:31,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:17:31,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:17:31,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:17:31,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:17:31,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:17:31,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-06-14 12:17:31,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 97 transitions, 796 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:31,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:17:31,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-06-14 12:17:31,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:17:31,443 INFO L124 PetriNetUnfolderBase]: 291/544 cut-off events. [2024-06-14 12:17:31,443 INFO L125 PetriNetUnfolderBase]: For 16079/16085 co-relation queries the response was YES. [2024-06-14 12:17:31,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3317 conditions, 544 events. 291/544 cut-off events. For 16079/16085 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2273 event pairs, 56 based on Foata normal form. 7/551 useless extension candidates. Maximal degree in co-relation 3265. Up to 434 conditions per place. [2024-06-14 12:17:31,447 INFO L140 encePairwiseOnDemand]: 25/34 looper letters, 65 selfloop transitions, 29 changer transitions 0/109 dead transitions. [2024-06-14 12:17:31,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 109 transitions, 1088 flow [2024-06-14 12:17:31,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:17:31,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:17:31,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 109 transitions. [2024-06-14 12:17:31,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4007352941176471 [2024-06-14 12:17:31,449 INFO L175 Difference]: Start difference. First operand has 108 places, 97 transitions, 796 flow. Second operand 8 states and 109 transitions. [2024-06-14 12:17:31,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 109 transitions, 1088 flow [2024-06-14 12:17:31,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 109 transitions, 1015 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-14 12:17:31,463 INFO L231 Difference]: Finished difference. Result has 111 places, 99 transitions, 808 flow [2024-06-14 12:17:31,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=723, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=808, PETRI_PLACES=111, PETRI_TRANSITIONS=99} [2024-06-14 12:17:31,465 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 78 predicate places. [2024-06-14 12:17:31,465 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 99 transitions, 808 flow [2024-06-14 12:17:31,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:31,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:17:31,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:17:31,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-14 12:17:31,466 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:17:31,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:17:31,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1123277985, now seen corresponding path program 4 times [2024-06-14 12:17:31,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:17:31,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075397208] [2024-06-14 12:17:31,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:17:31,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:17:31,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:17:32,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:17:32,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:17:32,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075397208] [2024-06-14 12:17:32,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075397208] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:17:32,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:17:32,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:17:32,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031822966] [2024-06-14 12:17:32,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:17:32,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:17:32,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:17:32,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:17:32,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:17:32,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-06-14 12:17:32,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 99 transitions, 808 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:32,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:17:32,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-06-14 12:17:32,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:17:32,458 INFO L124 PetriNetUnfolderBase]: 289/541 cut-off events. [2024-06-14 12:17:32,459 INFO L125 PetriNetUnfolderBase]: For 16786/16792 co-relation queries the response was YES. [2024-06-14 12:17:32,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3298 conditions, 541 events. 289/541 cut-off events. For 16786/16792 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2252 event pairs, 56 based on Foata normal form. 7/548 useless extension candidates. Maximal degree in co-relation 3245. Up to 432 conditions per place. [2024-06-14 12:17:32,463 INFO L140 encePairwiseOnDemand]: 25/34 looper letters, 66 selfloop transitions, 27 changer transitions 0/108 dead transitions. [2024-06-14 12:17:32,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 108 transitions, 1020 flow [2024-06-14 12:17:32,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:17:32,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:17:32,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 109 transitions. [2024-06-14 12:17:32,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4007352941176471 [2024-06-14 12:17:32,464 INFO L175 Difference]: Start difference. First operand has 111 places, 99 transitions, 808 flow. Second operand 8 states and 109 transitions. [2024-06-14 12:17:32,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 108 transitions, 1020 flow [2024-06-14 12:17:32,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 108 transitions, 949 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-14 12:17:32,479 INFO L231 Difference]: Finished difference. Result has 114 places, 99 transitions, 796 flow [2024-06-14 12:17:32,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=737, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=796, PETRI_PLACES=114, PETRI_TRANSITIONS=99} [2024-06-14 12:17:32,480 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 81 predicate places. [2024-06-14 12:17:32,480 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 99 transitions, 796 flow [2024-06-14 12:17:32,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:32,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:17:32,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:17:32,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-14 12:17:32,481 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:17:32,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:17:32,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1123277706, now seen corresponding path program 6 times [2024-06-14 12:17:32,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:17:32,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087606279] [2024-06-14 12:17:32,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:17:32,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:17:32,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:17:33,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:17:33,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:17:33,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087606279] [2024-06-14 12:17:33,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087606279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:17:33,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:17:33,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:17:33,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368042343] [2024-06-14 12:17:33,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:17:33,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:17:33,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:17:33,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:17:33,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:17:33,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:17:33,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 99 transitions, 796 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:33,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:17:33,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:17:33,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:17:33,407 INFO L124 PetriNetUnfolderBase]: 307/562 cut-off events. [2024-06-14 12:17:33,407 INFO L125 PetriNetUnfolderBase]: For 17347/17351 co-relation queries the response was YES. [2024-06-14 12:17:33,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3430 conditions, 562 events. 307/562 cut-off events. For 17347/17351 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2298 event pairs, 61 based on Foata normal form. 5/567 useless extension candidates. Maximal degree in co-relation 3376. Up to 453 conditions per place. [2024-06-14 12:17:33,411 INFO L140 encePairwiseOnDemand]: 25/34 looper letters, 68 selfloop transitions, 37 changer transitions 0/108 dead transitions. [2024-06-14 12:17:33,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 108 transitions, 1032 flow [2024-06-14 12:17:33,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:17:33,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:17:33,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-14 12:17:33,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3786764705882353 [2024-06-14 12:17:33,412 INFO L175 Difference]: Start difference. First operand has 114 places, 99 transitions, 796 flow. Second operand 8 states and 103 transitions. [2024-06-14 12:17:33,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 108 transitions, 1032 flow [2024-06-14 12:17:33,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 108 transitions, 969 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-14 12:17:33,426 INFO L231 Difference]: Finished difference. Result has 116 places, 99 transitions, 812 flow [2024-06-14 12:17:33,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=733, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=812, PETRI_PLACES=116, PETRI_TRANSITIONS=99} [2024-06-14 12:17:33,426 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 83 predicate places. [2024-06-14 12:17:33,426 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 99 transitions, 812 flow [2024-06-14 12:17:33,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:33,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:17:33,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:17:33,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-14 12:17:33,427 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:17:33,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:17:33,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1123616319, now seen corresponding path program 1 times [2024-06-14 12:17:33,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:17:33,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284718915] [2024-06-14 12:17:33,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:17:33,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:17:33,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:17:34,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:17:34,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:17:34,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284718915] [2024-06-14 12:17:34,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284718915] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:17:34,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:17:34,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:17:34,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894373490] [2024-06-14 12:17:34,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:17:34,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:17:34,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:17:34,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:17:34,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:17:34,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-06-14 12:17:34,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 99 transitions, 812 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:34,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:17:34,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-06-14 12:17:34,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:17:34,712 INFO L124 PetriNetUnfolderBase]: 284/532 cut-off events. [2024-06-14 12:17:34,712 INFO L125 PetriNetUnfolderBase]: For 18180/18185 co-relation queries the response was YES. [2024-06-14 12:17:34,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3274 conditions, 532 events. 284/532 cut-off events. For 18180/18185 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2223 event pairs, 56 based on Foata normal form. 4/534 useless extension candidates. Maximal degree in co-relation 3219. Up to 461 conditions per place. [2024-06-14 12:17:34,716 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 81 selfloop transitions, 14 changer transitions 0/110 dead transitions. [2024-06-14 12:17:34,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 110 transitions, 1036 flow [2024-06-14 12:17:34,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:17:34,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:17:34,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-14 12:17:34,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3758169934640523 [2024-06-14 12:17:34,718 INFO L175 Difference]: Start difference. First operand has 116 places, 99 transitions, 812 flow. Second operand 9 states and 115 transitions. [2024-06-14 12:17:34,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 110 transitions, 1036 flow [2024-06-14 12:17:34,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 110 transitions, 946 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-14 12:17:34,732 INFO L231 Difference]: Finished difference. Result has 117 places, 101 transitions, 771 flow [2024-06-14 12:17:34,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=722, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=771, PETRI_PLACES=117, PETRI_TRANSITIONS=101} [2024-06-14 12:17:34,732 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 84 predicate places. [2024-06-14 12:17:34,732 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 101 transitions, 771 flow [2024-06-14 12:17:34,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:34,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:17:34,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:17:34,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-14 12:17:34,733 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:17:34,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:17:34,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1537731793, now seen corresponding path program 1 times [2024-06-14 12:17:34,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:17:34,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694254920] [2024-06-14 12:17:34,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:17:34,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:17:34,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:17:35,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:17:35,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:17:35,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694254920] [2024-06-14 12:17:35,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694254920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:17:35,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:17:35,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:17:35,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083349474] [2024-06-14 12:17:35,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:17:35,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:17:35,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:17:35,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:17:35,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:17:35,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-06-14 12:17:35,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 101 transitions, 771 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:35,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:17:35,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-06-14 12:17:35,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:17:36,069 INFO L124 PetriNetUnfolderBase]: 287/538 cut-off events. [2024-06-14 12:17:36,070 INFO L125 PetriNetUnfolderBase]: For 18628/18630 co-relation queries the response was YES. [2024-06-14 12:17:36,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3322 conditions, 538 events. 287/538 cut-off events. For 18628/18630 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2248 event pairs, 48 based on Foata normal form. 3/541 useless extension candidates. Maximal degree in co-relation 3266. Up to 416 conditions per place. [2024-06-14 12:17:36,074 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 86 selfloop transitions, 23 changer transitions 0/123 dead transitions. [2024-06-14 12:17:36,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 123 transitions, 1085 flow [2024-06-14 12:17:36,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:17:36,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:17:36,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 127 transitions. [2024-06-14 12:17:36,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4150326797385621 [2024-06-14 12:17:36,077 INFO L175 Difference]: Start difference. First operand has 117 places, 101 transitions, 771 flow. Second operand 9 states and 127 transitions. [2024-06-14 12:17:36,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 123 transitions, 1085 flow [2024-06-14 12:17:36,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 123 transitions, 1004 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-14 12:17:36,094 INFO L231 Difference]: Finished difference. Result has 116 places, 103 transitions, 779 flow [2024-06-14 12:17:36,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=779, PETRI_PLACES=116, PETRI_TRANSITIONS=103} [2024-06-14 12:17:36,095 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 83 predicate places. [2024-06-14 12:17:36,095 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 103 transitions, 779 flow [2024-06-14 12:17:36,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:36,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:17:36,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:17:36,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-14 12:17:36,095 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:17:36,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:17:36,096 INFO L85 PathProgramCache]: Analyzing trace with hash -596297393, now seen corresponding path program 1 times [2024-06-14 12:17:36,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:17:36,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751264136] [2024-06-14 12:17:36,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:17:36,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:17:36,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:17:36,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:17:36,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:17:36,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751264136] [2024-06-14 12:17:36,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751264136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:17:36,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:17:36,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:17:36,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000346585] [2024-06-14 12:17:36,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:17:36,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:17:36,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:17:36,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:17:36,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:17:36,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:17:36,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 103 transitions, 779 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:36,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:17:36,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:17:36,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:17:37,186 INFO L124 PetriNetUnfolderBase]: 309/564 cut-off events. [2024-06-14 12:17:37,186 INFO L125 PetriNetUnfolderBase]: For 20207/20209 co-relation queries the response was YES. [2024-06-14 12:17:37,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3510 conditions, 564 events. 309/564 cut-off events. For 20207/20209 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2327 event pairs, 50 based on Foata normal form. 4/568 useless extension candidates. Maximal degree in co-relation 3454. Up to 466 conditions per place. [2024-06-14 12:17:37,190 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 96 selfloop transitions, 25 changer transitions 0/124 dead transitions. [2024-06-14 12:17:37,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 124 transitions, 1107 flow [2024-06-14 12:17:37,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:17:37,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:17:37,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-14 12:17:37,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38562091503267976 [2024-06-14 12:17:37,191 INFO L175 Difference]: Start difference. First operand has 116 places, 103 transitions, 779 flow. Second operand 9 states and 118 transitions. [2024-06-14 12:17:37,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 124 transitions, 1107 flow [2024-06-14 12:17:37,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 124 transitions, 1034 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-14 12:17:37,208 INFO L231 Difference]: Finished difference. Result has 118 places, 105 transitions, 792 flow [2024-06-14 12:17:37,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=706, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=792, PETRI_PLACES=118, PETRI_TRANSITIONS=105} [2024-06-14 12:17:37,208 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 85 predicate places. [2024-06-14 12:17:37,208 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 105 transitions, 792 flow [2024-06-14 12:17:37,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:37,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:17:37,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:17:37,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-14 12:17:37,209 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:17:37,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:17:37,210 INFO L85 PathProgramCache]: Analyzing trace with hash 808696645, now seen corresponding path program 2 times [2024-06-14 12:17:37,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:17:37,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395444855] [2024-06-14 12:17:37,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:17:37,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:17:37,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:17:37,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:17:37,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:17:37,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395444855] [2024-06-14 12:17:37,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395444855] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:17:37,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:17:37,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:17:37,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813769957] [2024-06-14 12:17:37,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:17:37,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:17:37,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:17:37,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:17:37,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:17:38,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:17:38,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 105 transitions, 792 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:38,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:17:38,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:17:38,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:17:38,293 INFO L124 PetriNetUnfolderBase]: 325/593 cut-off events. [2024-06-14 12:17:38,293 INFO L125 PetriNetUnfolderBase]: For 22994/22994 co-relation queries the response was YES. [2024-06-14 12:17:38,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3784 conditions, 593 events. 325/593 cut-off events. For 22994/22994 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2474 event pairs, 56 based on Foata normal form. 2/595 useless extension candidates. Maximal degree in co-relation 3727. Up to 459 conditions per place. [2024-06-14 12:17:38,297 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 94 selfloop transitions, 30 changer transitions 0/127 dead transitions. [2024-06-14 12:17:38,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 127 transitions, 1220 flow [2024-06-14 12:17:38,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:17:38,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:17:38,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 121 transitions. [2024-06-14 12:17:38,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3954248366013072 [2024-06-14 12:17:38,298 INFO L175 Difference]: Start difference. First operand has 118 places, 105 transitions, 792 flow. Second operand 9 states and 121 transitions. [2024-06-14 12:17:38,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 127 transitions, 1220 flow [2024-06-14 12:17:38,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 127 transitions, 1152 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-14 12:17:38,317 INFO L231 Difference]: Finished difference. Result has 120 places, 109 transitions, 853 flow [2024-06-14 12:17:38,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=724, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=853, PETRI_PLACES=120, PETRI_TRANSITIONS=109} [2024-06-14 12:17:38,318 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 87 predicate places. [2024-06-14 12:17:38,318 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 109 transitions, 853 flow [2024-06-14 12:17:38,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:38,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:17:38,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:17:38,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-14 12:17:38,318 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:17:38,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:17:38,319 INFO L85 PathProgramCache]: Analyzing trace with hash 808703155, now seen corresponding path program 3 times [2024-06-14 12:17:38,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:17:38,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781535812] [2024-06-14 12:17:38,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:17:38,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:17:38,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:17:39,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:17:39,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:17:39,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781535812] [2024-06-14 12:17:39,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781535812] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:17:39,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:17:39,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:17:39,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965055329] [2024-06-14 12:17:39,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:17:39,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:17:39,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:17:39,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:17:39,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:17:39,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:17:39,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 109 transitions, 853 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:39,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:17:39,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:17:39,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:17:39,376 INFO L124 PetriNetUnfolderBase]: 321/587 cut-off events. [2024-06-14 12:17:39,376 INFO L125 PetriNetUnfolderBase]: For 23420/23420 co-relation queries the response was YES. [2024-06-14 12:17:39,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3741 conditions, 587 events. 321/587 cut-off events. For 23420/23420 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2440 event pairs, 53 based on Foata normal form. 2/589 useless extension candidates. Maximal degree in co-relation 3683. Up to 456 conditions per place. [2024-06-14 12:17:39,394 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 91 selfloop transitions, 32 changer transitions 0/126 dead transitions. [2024-06-14 12:17:39,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 126 transitions, 1151 flow [2024-06-14 12:17:39,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:17:39,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:17:39,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-14 12:17:39,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-14 12:17:39,399 INFO L175 Difference]: Start difference. First operand has 120 places, 109 transitions, 853 flow. Second operand 9 states and 119 transitions. [2024-06-14 12:17:39,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 126 transitions, 1151 flow [2024-06-14 12:17:39,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 126 transitions, 1067 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-14 12:17:39,419 INFO L231 Difference]: Finished difference. Result has 124 places, 109 transitions, 838 flow [2024-06-14 12:17:39,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=769, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=838, PETRI_PLACES=124, PETRI_TRANSITIONS=109} [2024-06-14 12:17:39,419 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 91 predicate places. [2024-06-14 12:17:39,420 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 109 transitions, 838 flow [2024-06-14 12:17:39,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:39,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:17:39,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:17:39,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-14 12:17:39,420 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:17:39,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:17:39,421 INFO L85 PathProgramCache]: Analyzing trace with hash 808703403, now seen corresponding path program 1 times [2024-06-14 12:17:39,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:17:39,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361547459] [2024-06-14 12:17:39,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:17:39,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:17:39,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:17:40,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:17:40,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:17:40,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361547459] [2024-06-14 12:17:40,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361547459] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:17:40,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:17:40,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:17:40,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066348215] [2024-06-14 12:17:40,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:17:40,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:17:40,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:17:40,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:17:40,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:17:40,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:17:40,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 109 transitions, 838 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:40,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:17:40,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:17:40,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:17:40,452 INFO L124 PetriNetUnfolderBase]: 324/591 cut-off events. [2024-06-14 12:17:40,452 INFO L125 PetriNetUnfolderBase]: For 23919/23921 co-relation queries the response was YES. [2024-06-14 12:17:40,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3796 conditions, 591 events. 324/591 cut-off events. For 23919/23921 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2467 event pairs, 53 based on Foata normal form. 3/594 useless extension candidates. Maximal degree in co-relation 3736. Up to 523 conditions per place. [2024-06-14 12:17:40,456 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 104 selfloop transitions, 19 changer transitions 0/126 dead transitions. [2024-06-14 12:17:40,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 126 transitions, 1150 flow [2024-06-14 12:17:40,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:17:40,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:17:40,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-14 12:17:40,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.369281045751634 [2024-06-14 12:17:40,457 INFO L175 Difference]: Start difference. First operand has 124 places, 109 transitions, 838 flow. Second operand 9 states and 113 transitions. [2024-06-14 12:17:40,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 126 transitions, 1150 flow [2024-06-14 12:17:40,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 126 transitions, 1081 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-14 12:17:40,475 INFO L231 Difference]: Finished difference. Result has 125 places, 111 transitions, 836 flow [2024-06-14 12:17:40,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=769, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=836, PETRI_PLACES=125, PETRI_TRANSITIONS=111} [2024-06-14 12:17:40,476 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 92 predicate places. [2024-06-14 12:17:40,476 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 111 transitions, 836 flow [2024-06-14 12:17:40,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:40,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:17:40,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:17:40,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-14 12:17:40,477 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:17:40,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:17:40,477 INFO L85 PathProgramCache]: Analyzing trace with hash -418919795, now seen corresponding path program 1 times [2024-06-14 12:17:40,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:17:40,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052339721] [2024-06-14 12:17:40,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:17:40,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:17:40,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:17:41,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:17:41,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:17:41,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052339721] [2024-06-14 12:17:41,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052339721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:17:41,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:17:41,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:17:41,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61765307] [2024-06-14 12:17:41,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:17:41,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:17:41,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:17:41,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:17:41,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:17:41,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-06-14 12:17:41,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 111 transitions, 836 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:41,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:17:41,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-06-14 12:17:41,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:17:41,562 INFO L124 PetriNetUnfolderBase]: 306/572 cut-off events. [2024-06-14 12:17:41,562 INFO L125 PetriNetUnfolderBase]: For 25447/25451 co-relation queries the response was YES. [2024-06-14 12:17:41,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3692 conditions, 572 events. 306/572 cut-off events. For 25447/25451 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2442 event pairs, 52 based on Foata normal form. 5/577 useless extension candidates. Maximal degree in co-relation 3631. Up to 484 conditions per place. [2024-06-14 12:17:41,577 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 93 selfloop transitions, 16 changer transitions 0/125 dead transitions. [2024-06-14 12:17:41,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 125 transitions, 1108 flow [2024-06-14 12:17:41,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:17:41,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:17:41,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-14 12:17:41,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38562091503267976 [2024-06-14 12:17:41,578 INFO L175 Difference]: Start difference. First operand has 125 places, 111 transitions, 836 flow. Second operand 9 states and 118 transitions. [2024-06-14 12:17:41,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 125 transitions, 1108 flow [2024-06-14 12:17:41,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 125 transitions, 1057 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-14 12:17:41,598 INFO L231 Difference]: Finished difference. Result has 127 places, 113 transitions, 846 flow [2024-06-14 12:17:41,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=785, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=846, PETRI_PLACES=127, PETRI_TRANSITIONS=113} [2024-06-14 12:17:41,598 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 94 predicate places. [2024-06-14 12:17:41,598 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 113 transitions, 846 flow [2024-06-14 12:17:41,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:41,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:17:41,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:17:41,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-14 12:17:41,599 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:17:41,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:17:41,599 INFO L85 PathProgramCache]: Analyzing trace with hash -418920105, now seen corresponding path program 2 times [2024-06-14 12:17:41,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:17:41,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972215333] [2024-06-14 12:17:41,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:17:41,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:17:41,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:17:42,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:17:42,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:17:42,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972215333] [2024-06-14 12:17:42,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972215333] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:17:42,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:17:42,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:17:42,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663961568] [2024-06-14 12:17:42,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:17:42,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:17:42,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:17:42,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:17:42,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:17:42,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:17:42,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 113 transitions, 846 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:42,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:17:42,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:17:42,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:17:42,622 INFO L124 PetriNetUnfolderBase]: 335/609 cut-off events. [2024-06-14 12:17:42,622 INFO L125 PetriNetUnfolderBase]: For 27062/27064 co-relation queries the response was YES. [2024-06-14 12:17:42,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4012 conditions, 609 events. 335/609 cut-off events. For 27062/27064 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2543 event pairs, 54 based on Foata normal form. 3/612 useless extension candidates. Maximal degree in co-relation 3950. Up to 512 conditions per place. [2024-06-14 12:17:42,625 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 96 selfloop transitions, 31 changer transitions 0/130 dead transitions. [2024-06-14 12:17:42,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 130 transitions, 1258 flow [2024-06-14 12:17:42,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:17:42,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:17:42,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-14 12:17:42,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3758169934640523 [2024-06-14 12:17:42,633 INFO L175 Difference]: Start difference. First operand has 127 places, 113 transitions, 846 flow. Second operand 9 states and 115 transitions. [2024-06-14 12:17:42,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 130 transitions, 1258 flow [2024-06-14 12:17:42,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 130 transitions, 1213 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-14 12:17:42,650 INFO L231 Difference]: Finished difference. Result has 129 places, 117 transitions, 920 flow [2024-06-14 12:17:42,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=801, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=920, PETRI_PLACES=129, PETRI_TRANSITIONS=117} [2024-06-14 12:17:42,651 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 96 predicate places. [2024-06-14 12:17:42,651 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 117 transitions, 920 flow [2024-06-14 12:17:42,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:42,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:17:42,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:17:42,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-14 12:17:42,651 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:17:42,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:17:42,652 INFO L85 PathProgramCache]: Analyzing trace with hash -418928723, now seen corresponding path program 4 times [2024-06-14 12:17:42,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:17:42,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699146031] [2024-06-14 12:17:42,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:17:42,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:17:42,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:17:43,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:17:43,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:17:43,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699146031] [2024-06-14 12:17:43,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699146031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:17:43,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:17:43,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:17:43,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442777037] [2024-06-14 12:17:43,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:17:43,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:17:43,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:17:43,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:17:43,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:17:43,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:17:43,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 117 transitions, 920 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:43,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:17:43,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:17:43,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:17:43,742 INFO L124 PetriNetUnfolderBase]: 351/638 cut-off events. [2024-06-14 12:17:43,742 INFO L125 PetriNetUnfolderBase]: For 31147/31147 co-relation queries the response was YES. [2024-06-14 12:17:43,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4352 conditions, 638 events. 351/638 cut-off events. For 31147/31147 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2728 event pairs, 55 based on Foata normal form. 2/640 useless extension candidates. Maximal degree in co-relation 4289. Up to 463 conditions per place. [2024-06-14 12:17:43,746 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 91 selfloop transitions, 42 changer transitions 0/136 dead transitions. [2024-06-14 12:17:43,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 136 transitions, 1372 flow [2024-06-14 12:17:43,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:17:43,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:17:43,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-14 12:17:43,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39215686274509803 [2024-06-14 12:17:43,761 INFO L175 Difference]: Start difference. First operand has 129 places, 117 transitions, 920 flow. Second operand 9 states and 120 transitions. [2024-06-14 12:17:43,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 136 transitions, 1372 flow [2024-06-14 12:17:43,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 136 transitions, 1317 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-14 12:17:43,785 INFO L231 Difference]: Finished difference. Result has 133 places, 121 transitions, 1026 flow [2024-06-14 12:17:43,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=865, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1026, PETRI_PLACES=133, PETRI_TRANSITIONS=121} [2024-06-14 12:17:43,785 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 100 predicate places. [2024-06-14 12:17:43,785 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 121 transitions, 1026 flow [2024-06-14 12:17:43,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:43,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:17:43,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:17:43,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-14 12:17:43,786 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:17:43,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:17:43,786 INFO L85 PathProgramCache]: Analyzing trace with hash -418928475, now seen corresponding path program 3 times [2024-06-14 12:17:43,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:17:43,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028155694] [2024-06-14 12:17:43,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:17:43,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:17:43,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:17:44,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:17:44,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:17:44,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028155694] [2024-06-14 12:17:44,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028155694] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:17:44,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:17:44,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:17:44,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700130439] [2024-06-14 12:17:44,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:17:44,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:17:44,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:17:44,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:17:44,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:17:44,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:17:44,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 121 transitions, 1026 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:44,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:17:44,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:17:44,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:17:44,849 INFO L124 PetriNetUnfolderBase]: 354/644 cut-off events. [2024-06-14 12:17:44,849 INFO L125 PetriNetUnfolderBase]: For 32220/32222 co-relation queries the response was YES. [2024-06-14 12:17:44,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4528 conditions, 644 events. 354/644 cut-off events. For 32220/32222 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2769 event pairs, 57 based on Foata normal form. 3/647 useless extension candidates. Maximal degree in co-relation 4463. Up to 542 conditions per place. [2024-06-14 12:17:44,853 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 102 selfloop transitions, 31 changer transitions 0/136 dead transitions. [2024-06-14 12:17:44,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 136 transitions, 1432 flow [2024-06-14 12:17:44,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:17:44,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:17:44,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-14 12:17:44,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790849673202614 [2024-06-14 12:17:44,864 INFO L175 Difference]: Start difference. First operand has 133 places, 121 transitions, 1026 flow. Second operand 9 states and 116 transitions. [2024-06-14 12:17:44,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 136 transitions, 1432 flow [2024-06-14 12:17:44,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 136 transitions, 1359 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-14 12:17:44,892 INFO L231 Difference]: Finished difference. Result has 137 places, 123 transitions, 1046 flow [2024-06-14 12:17:44,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=953, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1046, PETRI_PLACES=137, PETRI_TRANSITIONS=123} [2024-06-14 12:17:44,893 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 104 predicate places. [2024-06-14 12:17:44,893 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 123 transitions, 1046 flow [2024-06-14 12:17:44,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:44,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:17:44,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:17:44,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-14 12:17:44,894 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:17:44,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:17:44,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1360480117, now seen corresponding path program 5 times [2024-06-14 12:17:44,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:17:44,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425195422] [2024-06-14 12:17:44,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:17:44,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:17:44,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:17:45,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:17:45,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:17:45,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425195422] [2024-06-14 12:17:45,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425195422] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:17:45,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:17:45,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:17:45,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412470458] [2024-06-14 12:17:45,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:17:45,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:17:45,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:17:45,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:17:45,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:17:45,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:17:45,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 123 transitions, 1046 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:45,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:17:45,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:17:45,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:17:45,976 INFO L124 PetriNetUnfolderBase]: 360/655 cut-off events. [2024-06-14 12:17:45,976 INFO L125 PetriNetUnfolderBase]: For 34428/34428 co-relation queries the response was YES. [2024-06-14 12:17:45,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4620 conditions, 655 events. 360/655 cut-off events. For 34428/34428 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2856 event pairs, 60 based on Foata normal form. 2/657 useless extension candidates. Maximal degree in co-relation 4553. Up to 474 conditions per place. [2024-06-14 12:17:45,980 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 96 selfloop transitions, 41 changer transitions 0/140 dead transitions. [2024-06-14 12:17:45,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 140 transitions, 1480 flow [2024-06-14 12:17:45,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:17:45,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:17:45,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 121 transitions. [2024-06-14 12:17:45,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3954248366013072 [2024-06-14 12:17:45,981 INFO L175 Difference]: Start difference. First operand has 137 places, 123 transitions, 1046 flow. Second operand 9 states and 121 transitions. [2024-06-14 12:17:45,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 140 transitions, 1480 flow [2024-06-14 12:17:46,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 140 transitions, 1415 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-14 12:17:46,010 INFO L231 Difference]: Finished difference. Result has 140 places, 125 transitions, 1106 flow [2024-06-14 12:17:46,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=981, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1106, PETRI_PLACES=140, PETRI_TRANSITIONS=125} [2024-06-14 12:17:46,011 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 107 predicate places. [2024-06-14 12:17:46,011 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 125 transitions, 1106 flow [2024-06-14 12:17:46,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:46,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:17:46,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:17:46,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-14 12:17:46,013 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:17:46,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:17:46,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1360473359, now seen corresponding path program 4 times [2024-06-14 12:17:46,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:17:46,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547877424] [2024-06-14 12:17:46,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:17:46,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:17:46,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:17:46,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:17:46,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:17:46,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547877424] [2024-06-14 12:17:46,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547877424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:17:46,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:17:46,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:17:46,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493365467] [2024-06-14 12:17:46,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:17:46,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:17:46,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:17:46,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:17:46,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:17:46,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:17:46,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 125 transitions, 1106 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:46,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:17:46,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:17:46,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:17:47,039 INFO L124 PetriNetUnfolderBase]: 358/651 cut-off events. [2024-06-14 12:17:47,039 INFO L125 PetriNetUnfolderBase]: For 34476/34478 co-relation queries the response was YES. [2024-06-14 12:17:47,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4631 conditions, 651 events. 358/651 cut-off events. For 34476/34478 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2827 event pairs, 57 based on Foata normal form. 3/654 useless extension candidates. Maximal degree in co-relation 4563. Up to 550 conditions per place. [2024-06-14 12:17:47,044 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 104 selfloop transitions, 30 changer transitions 0/137 dead transitions. [2024-06-14 12:17:47,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 137 transitions, 1408 flow [2024-06-14 12:17:47,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:17:47,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:17:47,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-14 12:17:47,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790849673202614 [2024-06-14 12:17:47,045 INFO L175 Difference]: Start difference. First operand has 140 places, 125 transitions, 1106 flow. Second operand 9 states and 116 transitions. [2024-06-14 12:17:47,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 137 transitions, 1408 flow [2024-06-14 12:17:47,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 137 transitions, 1273 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-14 12:17:47,074 INFO L231 Difference]: Finished difference. Result has 142 places, 125 transitions, 1036 flow [2024-06-14 12:17:47,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=971, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1036, PETRI_PLACES=142, PETRI_TRANSITIONS=125} [2024-06-14 12:17:47,075 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 109 predicate places. [2024-06-14 12:17:47,075 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 125 transitions, 1036 flow [2024-06-14 12:17:47,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:47,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:17:47,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:17:47,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-14 12:17:47,075 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:17:47,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:17:47,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1360473607, now seen corresponding path program 6 times [2024-06-14 12:17:47,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:17:47,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042038676] [2024-06-14 12:17:47,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:17:47,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:17:47,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:17:47,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:17:47,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:17:47,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042038676] [2024-06-14 12:17:47,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042038676] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:17:47,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:17:47,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:17:47,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279080758] [2024-06-14 12:17:47,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:17:47,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:17:47,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:17:47,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:17:47,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:17:47,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:17:47,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 125 transitions, 1036 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:47,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:17:47,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:17:47,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:17:48,077 INFO L124 PetriNetUnfolderBase]: 354/646 cut-off events. [2024-06-14 12:17:48,077 INFO L125 PetriNetUnfolderBase]: For 34702/34702 co-relation queries the response was YES. [2024-06-14 12:17:48,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4415 conditions, 646 events. 354/646 cut-off events. For 34702/34702 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2798 event pairs, 59 based on Foata normal form. 2/648 useless extension candidates. Maximal degree in co-relation 4347. Up to 468 conditions per place. [2024-06-14 12:17:48,081 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 97 selfloop transitions, 40 changer transitions 0/140 dead transitions. [2024-06-14 12:17:48,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 140 transitions, 1354 flow [2024-06-14 12:17:48,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:17:48,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:17:48,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2024-06-14 12:17:48,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39869281045751637 [2024-06-14 12:17:48,082 INFO L175 Difference]: Start difference. First operand has 142 places, 125 transitions, 1036 flow. Second operand 9 states and 122 transitions. [2024-06-14 12:17:48,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 140 transitions, 1354 flow [2024-06-14 12:17:48,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 140 transitions, 1243 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-14 12:17:48,114 INFO L231 Difference]: Finished difference. Result has 142 places, 125 transitions, 1010 flow [2024-06-14 12:17:48,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=925, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1010, PETRI_PLACES=142, PETRI_TRANSITIONS=125} [2024-06-14 12:17:48,115 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 109 predicate places. [2024-06-14 12:17:48,115 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 125 transitions, 1010 flow [2024-06-14 12:17:48,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:48,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:17:48,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:17:48,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-14 12:17:48,115 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:17:48,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:17:48,116 INFO L85 PathProgramCache]: Analyzing trace with hash 176540731, now seen corresponding path program 5 times [2024-06-14 12:17:48,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:17:48,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370830427] [2024-06-14 12:17:48,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:17:48,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:17:48,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:17:48,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:17:48,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:17:48,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370830427] [2024-06-14 12:17:48,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370830427] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:17:48,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:17:48,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:17:48,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441509052] [2024-06-14 12:17:48,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:17:48,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:17:48,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:17:48,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:17:48,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:17:48,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:17:48,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 125 transitions, 1010 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:48,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:17:48,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:17:48,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:17:49,153 INFO L124 PetriNetUnfolderBase]: 357/652 cut-off events. [2024-06-14 12:17:49,153 INFO L125 PetriNetUnfolderBase]: For 35344/35348 co-relation queries the response was YES. [2024-06-14 12:17:49,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4476 conditions, 652 events. 357/652 cut-off events. For 35344/35348 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2831 event pairs, 62 based on Foata normal form. 5/657 useless extension candidates. Maximal degree in co-relation 4407. Up to 495 conditions per place. [2024-06-14 12:17:49,158 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 90 selfloop transitions, 47 changer transitions 0/140 dead transitions. [2024-06-14 12:17:49,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 140 transitions, 1456 flow [2024-06-14 12:17:49,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:17:49,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:17:49,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-14 12:17:49,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38562091503267976 [2024-06-14 12:17:49,159 INFO L175 Difference]: Start difference. First operand has 142 places, 125 transitions, 1010 flow. Second operand 9 states and 118 transitions. [2024-06-14 12:17:49,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 140 transitions, 1456 flow [2024-06-14 12:17:49,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 140 transitions, 1349 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-14 12:17:49,196 INFO L231 Difference]: Finished difference. Result has 142 places, 129 transitions, 1062 flow [2024-06-14 12:17:49,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=903, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1062, PETRI_PLACES=142, PETRI_TRANSITIONS=129} [2024-06-14 12:17:49,196 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 109 predicate places. [2024-06-14 12:17:49,196 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 129 transitions, 1062 flow [2024-06-14 12:17:49,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:49,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:17:49,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:17:49,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-14 12:17:49,197 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:17:49,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:17:49,197 INFO L85 PathProgramCache]: Analyzing trace with hash -939482209, now seen corresponding path program 7 times [2024-06-14 12:17:49,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:17:49,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495395770] [2024-06-14 12:17:49,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:17:49,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:17:49,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:17:49,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:17:49,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:17:49,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495395770] [2024-06-14 12:17:49,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495395770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:17:49,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:17:49,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:17:49,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412229375] [2024-06-14 12:17:49,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:17:49,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:17:49,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:17:49,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:17:49,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:17:50,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:17:50,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 129 transitions, 1062 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:50,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:17:50,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:17:50,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:17:50,252 INFO L124 PetriNetUnfolderBase]: 378/690 cut-off events. [2024-06-14 12:17:50,252 INFO L125 PetriNetUnfolderBase]: For 41339/41343 co-relation queries the response was YES. [2024-06-14 12:17:50,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4881 conditions, 690 events. 378/690 cut-off events. For 41339/41343 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3032 event pairs, 71 based on Foata normal form. 2/692 useless extension candidates. Maximal degree in co-relation 4811. Up to 446 conditions per place. [2024-06-14 12:17:50,256 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 92 selfloop transitions, 55 changer transitions 0/150 dead transitions. [2024-06-14 12:17:50,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 150 transitions, 1676 flow [2024-06-14 12:17:50,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:17:50,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:17:50,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 124 transitions. [2024-06-14 12:17:50,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40522875816993464 [2024-06-14 12:17:50,257 INFO L175 Difference]: Start difference. First operand has 142 places, 129 transitions, 1062 flow. Second operand 9 states and 124 transitions. [2024-06-14 12:17:50,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 150 transitions, 1676 flow [2024-06-14 12:17:50,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 150 transitions, 1574 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-14 12:17:50,294 INFO L231 Difference]: Finished difference. Result has 145 places, 135 transitions, 1181 flow [2024-06-14 12:17:50,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=960, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1181, PETRI_PLACES=145, PETRI_TRANSITIONS=135} [2024-06-14 12:17:50,295 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 112 predicate places. [2024-06-14 12:17:50,295 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 135 transitions, 1181 flow [2024-06-14 12:17:50,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:50,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:17:50,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:17:50,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-14 12:17:50,295 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:17:50,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:17:50,296 INFO L85 PathProgramCache]: Analyzing trace with hash 176771371, now seen corresponding path program 6 times [2024-06-14 12:17:50,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:17:50,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412308661] [2024-06-14 12:17:50,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:17:50,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:17:50,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:17:51,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:17:51,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:17:51,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412308661] [2024-06-14 12:17:51,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412308661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:17:51,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:17:51,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:17:51,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447857321] [2024-06-14 12:17:51,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:17:51,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:17:51,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:17:51,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:17:51,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:17:51,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:17:51,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 135 transitions, 1181 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:51,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:17:51,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:17:51,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:17:51,346 INFO L124 PetriNetUnfolderBase]: 386/703 cut-off events. [2024-06-14 12:17:51,346 INFO L125 PetriNetUnfolderBase]: For 43299/43303 co-relation queries the response was YES. [2024-06-14 12:17:51,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5100 conditions, 703 events. 386/703 cut-off events. For 43299/43303 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3130 event pairs, 66 based on Foata normal form. 5/708 useless extension candidates. Maximal degree in co-relation 5029. Up to 539 conditions per place. [2024-06-14 12:17:51,351 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 100 selfloop transitions, 48 changer transitions 0/151 dead transitions. [2024-06-14 12:17:51,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 151 transitions, 1741 flow [2024-06-14 12:17:51,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:17:51,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:17:51,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 121 transitions. [2024-06-14 12:17:51,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3954248366013072 [2024-06-14 12:17:51,352 INFO L175 Difference]: Start difference. First operand has 145 places, 135 transitions, 1181 flow. Second operand 9 states and 121 transitions. [2024-06-14 12:17:51,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 151 transitions, 1741 flow [2024-06-14 12:17:51,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 151 transitions, 1616 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-14 12:17:51,393 INFO L231 Difference]: Finished difference. Result has 149 places, 139 transitions, 1209 flow [2024-06-14 12:17:51,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1056, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1209, PETRI_PLACES=149, PETRI_TRANSITIONS=139} [2024-06-14 12:17:51,394 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 116 predicate places. [2024-06-14 12:17:51,394 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 139 transitions, 1209 flow [2024-06-14 12:17:51,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:51,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:17:51,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:17:51,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-14 12:17:51,395 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:17:51,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:17:51,395 INFO L85 PathProgramCache]: Analyzing trace with hash 176771123, now seen corresponding path program 8 times [2024-06-14 12:17:51,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:17:51,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782026900] [2024-06-14 12:17:51,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:17:51,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:17:51,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:17:52,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:17:52,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:17:52,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782026900] [2024-06-14 12:17:52,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782026900] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:17:52,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:17:52,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:17:52,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523116255] [2024-06-14 12:17:52,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:17:52,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:17:52,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:17:52,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:17:52,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:17:52,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:17:52,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 139 transitions, 1209 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:52,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:17:52,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:17:52,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:17:52,436 INFO L124 PetriNetUnfolderBase]: 392/715 cut-off events. [2024-06-14 12:17:52,436 INFO L125 PetriNetUnfolderBase]: For 45880/45884 co-relation queries the response was YES. [2024-06-14 12:17:52,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5125 conditions, 715 events. 392/715 cut-off events. For 45880/45884 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3185 event pairs, 71 based on Foata normal form. 2/717 useless extension candidates. Maximal degree in co-relation 5053. Up to 465 conditions per place. [2024-06-14 12:17:52,441 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 97 selfloop transitions, 56 changer transitions 0/156 dead transitions. [2024-06-14 12:17:52,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 156 transitions, 1773 flow [2024-06-14 12:17:52,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:17:52,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:17:52,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 125 transitions. [2024-06-14 12:17:52,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4084967320261438 [2024-06-14 12:17:52,442 INFO L175 Difference]: Start difference. First operand has 149 places, 139 transitions, 1209 flow. Second operand 9 states and 125 transitions. [2024-06-14 12:17:52,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 156 transitions, 1773 flow [2024-06-14 12:17:52,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 156 transitions, 1679 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-14 12:17:52,487 INFO L231 Difference]: Finished difference. Result has 153 places, 141 transitions, 1264 flow [2024-06-14 12:17:52,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1115, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1264, PETRI_PLACES=153, PETRI_TRANSITIONS=141} [2024-06-14 12:17:52,487 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 120 predicate places. [2024-06-14 12:17:52,488 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 141 transitions, 1264 flow [2024-06-14 12:17:52,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:52,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:17:52,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:17:52,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-14 12:17:52,488 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:17:52,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:17:52,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1087665523, now seen corresponding path program 2 times [2024-06-14 12:17:52,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:17:52,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861763923] [2024-06-14 12:17:52,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:17:52,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:17:52,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:17:53,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:17:53,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:17:53,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861763923] [2024-06-14 12:17:53,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861763923] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:17:53,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:17:53,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:17:53,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720569218] [2024-06-14 12:17:53,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:17:53,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:17:53,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:17:53,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:17:53,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:17:53,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-06-14 12:17:53,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 141 transitions, 1264 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:53,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:17:53,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-06-14 12:17:53,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:17:53,523 INFO L124 PetriNetUnfolderBase]: 372/693 cut-off events. [2024-06-14 12:17:53,523 INFO L125 PetriNetUnfolderBase]: For 47640/47646 co-relation queries the response was YES. [2024-06-14 12:17:53,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5061 conditions, 693 events. 372/693 cut-off events. For 47640/47646 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3171 event pairs, 61 based on Foata normal form. 7/700 useless extension candidates. Maximal degree in co-relation 4988. Up to 538 conditions per place. [2024-06-14 12:17:53,528 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 103 selfloop transitions, 30 changer transitions 0/156 dead transitions. [2024-06-14 12:17:53,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 156 transitions, 1702 flow [2024-06-14 12:17:53,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:17:53,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:17:53,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 124 transitions. [2024-06-14 12:17:53,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40522875816993464 [2024-06-14 12:17:53,529 INFO L175 Difference]: Start difference. First operand has 153 places, 141 transitions, 1264 flow. Second operand 9 states and 124 transitions. [2024-06-14 12:17:53,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 156 transitions, 1702 flow [2024-06-14 12:17:53,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 156 transitions, 1579 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-14 12:17:53,581 INFO L231 Difference]: Finished difference. Result has 156 places, 145 transitions, 1258 flow [2024-06-14 12:17:53,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1141, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1258, PETRI_PLACES=156, PETRI_TRANSITIONS=145} [2024-06-14 12:17:53,581 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 123 predicate places. [2024-06-14 12:17:53,581 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 145 transitions, 1258 flow [2024-06-14 12:17:53,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:53,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:17:53,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:17:53,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-14 12:17:53,582 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:17:53,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:17:53,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1087911601, now seen corresponding path program 9 times [2024-06-14 12:17:53,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:17:53,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658537817] [2024-06-14 12:17:53,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:17:53,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:17:53,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:17:54,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:17:54,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:17:54,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658537817] [2024-06-14 12:17:54,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658537817] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:17:54,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:17:54,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:17:54,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127805598] [2024-06-14 12:17:54,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:17:54,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:17:54,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:17:54,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:17:54,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:17:54,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:17:54,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 145 transitions, 1258 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:54,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:17:54,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:17:54,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:17:54,614 INFO L124 PetriNetUnfolderBase]: 391/714 cut-off events. [2024-06-14 12:17:54,614 INFO L125 PetriNetUnfolderBase]: For 47493/47497 co-relation queries the response was YES. [2024-06-14 12:17:54,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5069 conditions, 714 events. 391/714 cut-off events. For 47493/47497 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3197 event pairs, 71 based on Foata normal form. 2/716 useless extension candidates. Maximal degree in co-relation 4995. Up to 467 conditions per place. [2024-06-14 12:17:54,619 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 96 selfloop transitions, 59 changer transitions 0/158 dead transitions. [2024-06-14 12:17:54,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 158 transitions, 1700 flow [2024-06-14 12:17:54,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:17:54,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:17:54,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 121 transitions. [2024-06-14 12:17:54,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3954248366013072 [2024-06-14 12:17:54,620 INFO L175 Difference]: Start difference. First operand has 156 places, 145 transitions, 1258 flow. Second operand 9 states and 121 transitions. [2024-06-14 12:17:54,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 158 transitions, 1700 flow [2024-06-14 12:17:54,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 158 transitions, 1631 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-14 12:17:54,677 INFO L231 Difference]: Finished difference. Result has 160 places, 145 transitions, 1312 flow [2024-06-14 12:17:54,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1189, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1312, PETRI_PLACES=160, PETRI_TRANSITIONS=145} [2024-06-14 12:17:54,678 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 127 predicate places. [2024-06-14 12:17:54,678 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 145 transitions, 1312 flow [2024-06-14 12:17:54,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:54,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:17:54,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:17:54,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-14 12:17:54,678 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:17:54,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:17:54,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1519879349, now seen corresponding path program 7 times [2024-06-14 12:17:54,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:17:54,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14459189] [2024-06-14 12:17:54,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:17:54,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:17:54,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:17:55,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:17:55,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:17:55,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14459189] [2024-06-14 12:17:55,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14459189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:17:55,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:17:55,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:17:55,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820193582] [2024-06-14 12:17:55,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:17:55,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:17:55,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:17:55,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:17:55,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:17:55,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:17:55,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 145 transitions, 1312 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:55,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:17:55,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:17:55,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:17:55,755 INFO L124 PetriNetUnfolderBase]: 389/711 cut-off events. [2024-06-14 12:17:55,755 INFO L125 PetriNetUnfolderBase]: For 47113/47117 co-relation queries the response was YES. [2024-06-14 12:17:55,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5134 conditions, 711 events. 389/711 cut-off events. For 47113/47117 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3172 event pairs, 65 based on Foata normal form. 5/716 useless extension candidates. Maximal degree in co-relation 5058. Up to 546 conditions per place. [2024-06-14 12:17:55,760 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 104 selfloop transitions, 49 changer transitions 0/156 dead transitions. [2024-06-14 12:17:55,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 156 transitions, 1746 flow [2024-06-14 12:17:55,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:17:55,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:17:55,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-14 12:17:55,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-14 12:17:55,761 INFO L175 Difference]: Start difference. First operand has 160 places, 145 transitions, 1312 flow. Second operand 9 states and 119 transitions. [2024-06-14 12:17:55,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 156 transitions, 1746 flow [2024-06-14 12:17:55,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 156 transitions, 1617 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-14 12:17:55,811 INFO L231 Difference]: Finished difference. Result has 162 places, 145 transitions, 1286 flow [2024-06-14 12:17:55,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1183, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1286, PETRI_PLACES=162, PETRI_TRANSITIONS=145} [2024-06-14 12:17:55,811 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 129 predicate places. [2024-06-14 12:17:55,811 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 145 transitions, 1286 flow [2024-06-14 12:17:55,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:55,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:17:55,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:17:55,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-14 12:17:55,812 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:17:55,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:17:55,812 INFO L85 PathProgramCache]: Analyzing trace with hash 461871241, now seen corresponding path program 8 times [2024-06-14 12:17:55,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:17:55,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888753943] [2024-06-14 12:17:55,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:17:55,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:17:55,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:17:56,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:17:56,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:17:56,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888753943] [2024-06-14 12:17:56,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888753943] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:17:56,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:17:56,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:17:56,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378622332] [2024-06-14 12:17:56,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:17:56,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:17:56,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:17:56,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:17:56,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:17:56,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:17:56,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 145 transitions, 1286 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:56,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:17:56,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:17:56,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:17:56,866 INFO L124 PetriNetUnfolderBase]: 392/716 cut-off events. [2024-06-14 12:17:56,866 INFO L125 PetriNetUnfolderBase]: For 49029/49033 co-relation queries the response was YES. [2024-06-14 12:17:56,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5152 conditions, 716 events. 392/716 cut-off events. For 49029/49033 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3202 event pairs, 65 based on Foata normal form. 5/721 useless extension candidates. Maximal degree in co-relation 5075. Up to 550 conditions per place. [2024-06-14 12:17:56,871 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 101 selfloop transitions, 54 changer transitions 0/158 dead transitions. [2024-06-14 12:17:56,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 158 transitions, 1758 flow [2024-06-14 12:17:56,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:17:56,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:17:56,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-14 12:17:56,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38235294117647056 [2024-06-14 12:17:56,872 INFO L175 Difference]: Start difference. First operand has 162 places, 145 transitions, 1286 flow. Second operand 9 states and 117 transitions. [2024-06-14 12:17:56,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 158 transitions, 1758 flow [2024-06-14 12:17:56,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 158 transitions, 1651 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-14 12:17:56,930 INFO L231 Difference]: Finished difference. Result has 163 places, 147 transitions, 1324 flow [2024-06-14 12:17:56,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1183, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1324, PETRI_PLACES=163, PETRI_TRANSITIONS=147} [2024-06-14 12:17:56,931 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 130 predicate places. [2024-06-14 12:17:56,931 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 147 transitions, 1324 flow [2024-06-14 12:17:56,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:56,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:17:56,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:17:56,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-14 12:17:56,932 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:17:56,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:17:56,932 INFO L85 PathProgramCache]: Analyzing trace with hash -802565963, now seen corresponding path program 9 times [2024-06-14 12:17:56,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:17:56,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819927433] [2024-06-14 12:17:56,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:17:56,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:17:56,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:17:57,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:17:57,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:17:57,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819927433] [2024-06-14 12:17:57,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819927433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:17:57,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:17:57,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:17:57,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659140446] [2024-06-14 12:17:57,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:17:57,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:17:57,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:17:57,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:17:57,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:17:57,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:17:57,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 147 transitions, 1324 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:57,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:17:57,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:17:57,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:17:57,931 INFO L124 PetriNetUnfolderBase]: 395/721 cut-off events. [2024-06-14 12:17:57,931 INFO L125 PetriNetUnfolderBase]: For 50977/50981 co-relation queries the response was YES. [2024-06-14 12:17:57,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5233 conditions, 721 events. 395/721 cut-off events. For 50977/50981 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3240 event pairs, 65 based on Foata normal form. 5/726 useless extension candidates. Maximal degree in co-relation 5155. Up to 554 conditions per place. [2024-06-14 12:17:57,936 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 102 selfloop transitions, 55 changer transitions 0/160 dead transitions. [2024-06-14 12:17:57,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 160 transitions, 1802 flow [2024-06-14 12:17:57,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:17:57,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:17:57,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-14 12:17:57,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38562091503267976 [2024-06-14 12:17:57,937 INFO L175 Difference]: Start difference. First operand has 163 places, 147 transitions, 1324 flow. Second operand 9 states and 118 transitions. [2024-06-14 12:17:57,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 160 transitions, 1802 flow [2024-06-14 12:17:58,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 160 transitions, 1649 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-14 12:17:58,014 INFO L231 Difference]: Finished difference. Result has 164 places, 149 transitions, 1318 flow [2024-06-14 12:17:58,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1177, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1318, PETRI_PLACES=164, PETRI_TRANSITIONS=149} [2024-06-14 12:17:58,015 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 131 predicate places. [2024-06-14 12:17:58,015 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 149 transitions, 1318 flow [2024-06-14 12:17:58,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:58,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:17:58,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:17:58,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-14 12:17:58,016 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:17:58,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:17:58,016 INFO L85 PathProgramCache]: Analyzing trace with hash -792446633, now seen corresponding path program 10 times [2024-06-14 12:17:58,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:17:58,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663638892] [2024-06-14 12:17:58,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:17:58,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:17:58,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:17:58,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:17:58,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:17:58,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663638892] [2024-06-14 12:17:58,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663638892] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:17:58,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:17:58,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:17:58,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102675715] [2024-06-14 12:17:58,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:17:58,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:17:58,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:17:58,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:17:58,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:17:58,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:17:58,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 149 transitions, 1318 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:58,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:17:58,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:17:58,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:17:59,073 INFO L124 PetriNetUnfolderBase]: 393/718 cut-off events. [2024-06-14 12:17:59,073 INFO L125 PetriNetUnfolderBase]: For 51476/51480 co-relation queries the response was YES. [2024-06-14 12:17:59,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5175 conditions, 718 events. 393/718 cut-off events. For 51476/51480 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3222 event pairs, 65 based on Foata normal form. 5/723 useless extension candidates. Maximal degree in co-relation 5096. Up to 552 conditions per place. [2024-06-14 12:17:59,078 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 94 selfloop transitions, 62 changer transitions 0/159 dead transitions. [2024-06-14 12:17:59,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 159 transitions, 1658 flow [2024-06-14 12:17:59,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:17:59,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:17:59,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-14 12:17:59,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3758169934640523 [2024-06-14 12:17:59,078 INFO L175 Difference]: Start difference. First operand has 164 places, 149 transitions, 1318 flow. Second operand 9 states and 115 transitions. [2024-06-14 12:17:59,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 159 transitions, 1658 flow [2024-06-14 12:17:59,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 159 transitions, 1525 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-14 12:17:59,140 INFO L231 Difference]: Finished difference. Result has 167 places, 149 transitions, 1314 flow [2024-06-14 12:17:59,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1185, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1314, PETRI_PLACES=167, PETRI_TRANSITIONS=149} [2024-06-14 12:17:59,141 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 134 predicate places. [2024-06-14 12:17:59,141 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 149 transitions, 1314 flow [2024-06-14 12:17:59,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:17:59,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:17:59,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:17:59,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-14 12:17:59,141 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:17:59,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:17:59,142 INFO L85 PathProgramCache]: Analyzing trace with hash 471999251, now seen corresponding path program 3 times [2024-06-14 12:17:59,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:17:59,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867153154] [2024-06-14 12:17:59,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:17:59,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:17:59,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:17:59,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:17:59,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:17:59,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867153154] [2024-06-14 12:17:59,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867153154] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:17:59,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:17:59,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:17:59,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076335162] [2024-06-14 12:17:59,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:17:59,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:17:59,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:17:59,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:17:59,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:18:00,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-06-14 12:18:00,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 149 transitions, 1314 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:00,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:00,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-06-14 12:18:00,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:00,241 INFO L124 PetriNetUnfolderBase]: 378/704 cut-off events. [2024-06-14 12:18:00,241 INFO L125 PetriNetUnfolderBase]: For 55118/55124 co-relation queries the response was YES. [2024-06-14 12:18:00,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5163 conditions, 704 events. 378/704 cut-off events. For 55118/55124 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3245 event pairs, 60 based on Foata normal form. 7/711 useless extension candidates. Maximal degree in co-relation 5083. Up to 544 conditions per place. [2024-06-14 12:18:00,246 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 103 selfloop transitions, 37 changer transitions 0/165 dead transitions. [2024-06-14 12:18:00,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 165 transitions, 1894 flow [2024-06-14 12:18:00,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:18:00,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:18:00,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 123 transitions. [2024-06-14 12:18:00,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4019607843137255 [2024-06-14 12:18:00,248 INFO L175 Difference]: Start difference. First operand has 167 places, 149 transitions, 1314 flow. Second operand 9 states and 123 transitions. [2024-06-14 12:18:00,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 165 transitions, 1894 flow [2024-06-14 12:18:00,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 165 transitions, 1754 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-14 12:18:00,318 INFO L231 Difference]: Finished difference. Result has 167 places, 153 transitions, 1309 flow [2024-06-14 12:18:00,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1174, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1309, PETRI_PLACES=167, PETRI_TRANSITIONS=153} [2024-06-14 12:18:00,319 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 134 predicate places. [2024-06-14 12:18:00,319 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 153 transitions, 1309 flow [2024-06-14 12:18:00,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:00,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:00,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:00,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-14 12:18:00,319 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:00,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:00,319 INFO L85 PathProgramCache]: Analyzing trace with hash 462178451, now seen corresponding path program 4 times [2024-06-14 12:18:00,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:00,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569481288] [2024-06-14 12:18:00,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:00,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:00,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:01,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:01,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:01,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569481288] [2024-06-14 12:18:01,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569481288] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:01,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:01,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:18:01,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562344696] [2024-06-14 12:18:01,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:01,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:18:01,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:01,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:18:01,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:18:01,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-06-14 12:18:01,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 153 transitions, 1309 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:01,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:01,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-06-14 12:18:01,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:01,531 INFO L124 PetriNetUnfolderBase]: 376/699 cut-off events. [2024-06-14 12:18:01,531 INFO L125 PetriNetUnfolderBase]: For 55703/55708 co-relation queries the response was YES. [2024-06-14 12:18:01,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5068 conditions, 699 events. 376/699 cut-off events. For 55703/55708 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3205 event pairs, 61 based on Foata normal form. 4/701 useless extension candidates. Maximal degree in co-relation 4987. Up to 595 conditions per place. [2024-06-14 12:18:01,537 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 123 selfloop transitions, 14 changer transitions 0/162 dead transitions. [2024-06-14 12:18:01,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 162 transitions, 1605 flow [2024-06-14 12:18:01,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:18:01,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:18:01,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-14 12:18:01,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3758169934640523 [2024-06-14 12:18:01,538 INFO L175 Difference]: Start difference. First operand has 167 places, 153 transitions, 1309 flow. Second operand 9 states and 115 transitions. [2024-06-14 12:18:01,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 162 transitions, 1605 flow [2024-06-14 12:18:01,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 162 transitions, 1516 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-14 12:18:01,599 INFO L231 Difference]: Finished difference. Result has 171 places, 153 transitions, 1253 flow [2024-06-14 12:18:01,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1220, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1253, PETRI_PLACES=171, PETRI_TRANSITIONS=153} [2024-06-14 12:18:01,600 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 138 predicate places. [2024-06-14 12:18:01,600 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 153 transitions, 1253 flow [2024-06-14 12:18:01,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:01,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:01,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:01,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-14 12:18:01,600 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:01,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:01,600 INFO L85 PathProgramCache]: Analyzing trace with hash 461870993, now seen corresponding path program 10 times [2024-06-14 12:18:01,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:01,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608007520] [2024-06-14 12:18:01,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:01,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:01,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:02,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:02,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:02,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608007520] [2024-06-14 12:18:02,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608007520] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:02,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:02,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:18:02,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062559903] [2024-06-14 12:18:02,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:02,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:18:02,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:02,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:18:02,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:18:02,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:18:02,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 153 transitions, 1253 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:02,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:02,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:18:02,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:02,668 INFO L124 PetriNetUnfolderBase]: 395/722 cut-off events. [2024-06-14 12:18:02,668 INFO L125 PetriNetUnfolderBase]: For 55737/55741 co-relation queries the response was YES. [2024-06-14 12:18:02,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5077 conditions, 722 events. 395/722 cut-off events. For 55737/55741 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3240 event pairs, 64 based on Foata normal form. 2/724 useless extension candidates. Maximal degree in co-relation 4995. Up to 478 conditions per place. [2024-06-14 12:18:02,673 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 99 selfloop transitions, 63 changer transitions 0/165 dead transitions. [2024-06-14 12:18:02,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 165 transitions, 1611 flow [2024-06-14 12:18:02,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:18:02,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:18:02,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-14 12:18:02,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-14 12:18:02,674 INFO L175 Difference]: Start difference. First operand has 171 places, 153 transitions, 1253 flow. Second operand 9 states and 119 transitions. [2024-06-14 12:18:02,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 165 transitions, 1611 flow [2024-06-14 12:18:02,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 165 transitions, 1558 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-14 12:18:02,745 INFO L231 Difference]: Finished difference. Result has 172 places, 153 transitions, 1331 flow [2024-06-14 12:18:02,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1200, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1331, PETRI_PLACES=172, PETRI_TRANSITIONS=153} [2024-06-14 12:18:02,746 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 139 predicate places. [2024-06-14 12:18:02,746 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 153 transitions, 1331 flow [2024-06-14 12:18:02,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:02,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:02,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:02,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-14 12:18:02,746 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:02,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:02,746 INFO L85 PathProgramCache]: Analyzing trace with hash -802565653, now seen corresponding path program 5 times [2024-06-14 12:18:02,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:02,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396515880] [2024-06-14 12:18:02,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:02,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:02,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:03,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:03,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:03,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396515880] [2024-06-14 12:18:03,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396515880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:03,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:03,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:18:03,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663927610] [2024-06-14 12:18:03,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:03,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:18:03,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:03,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:18:03,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:18:03,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-06-14 12:18:03,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 153 transitions, 1331 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:03,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:03,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-06-14 12:18:03,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:03,797 INFO L124 PetriNetUnfolderBase]: 370/692 cut-off events. [2024-06-14 12:18:03,797 INFO L125 PetriNetUnfolderBase]: For 54952/54958 co-relation queries the response was YES. [2024-06-14 12:18:03,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4968 conditions, 692 events. 370/692 cut-off events. For 54952/54958 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3178 event pairs, 59 based on Foata normal form. 7/699 useless extension candidates. Maximal degree in co-relation 4885. Up to 534 conditions per place. [2024-06-14 12:18:03,803 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 103 selfloop transitions, 35 changer transitions 0/163 dead transitions. [2024-06-14 12:18:03,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 163 transitions, 1635 flow [2024-06-14 12:18:03,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:18:03,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:18:03,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2024-06-14 12:18:03,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39869281045751637 [2024-06-14 12:18:03,804 INFO L175 Difference]: Start difference. First operand has 172 places, 153 transitions, 1331 flow. Second operand 9 states and 122 transitions. [2024-06-14 12:18:03,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 163 transitions, 1635 flow [2024-06-14 12:18:03,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 163 transitions, 1460 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-14 12:18:03,876 INFO L231 Difference]: Finished difference. Result has 171 places, 153 transitions, 1231 flow [2024-06-14 12:18:03,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1156, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1231, PETRI_PLACES=171, PETRI_TRANSITIONS=153} [2024-06-14 12:18:03,876 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 138 predicate places. [2024-06-14 12:18:03,876 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 153 transitions, 1231 flow [2024-06-14 12:18:03,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:03,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:03,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:03,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-14 12:18:03,877 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:03,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:03,877 INFO L85 PathProgramCache]: Analyzing trace with hash 472368337, now seen corresponding path program 1 times [2024-06-14 12:18:03,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:03,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966649425] [2024-06-14 12:18:03,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:03,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:03,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:04,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:04,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:04,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966649425] [2024-06-14 12:18:04,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966649425] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:04,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:04,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:18:04,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485586123] [2024-06-14 12:18:04,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:04,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:18:04,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:04,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:18:04,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:18:05,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-06-14 12:18:05,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 153 transitions, 1231 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:05,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:05,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-06-14 12:18:05,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:05,248 INFO L124 PetriNetUnfolderBase]: 366/684 cut-off events. [2024-06-14 12:18:05,248 INFO L125 PetriNetUnfolderBase]: For 54925/54930 co-relation queries the response was YES. [2024-06-14 12:18:05,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4735 conditions, 684 events. 366/684 cut-off events. For 54925/54930 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3146 event pairs, 59 based on Foata normal form. 5/687 useless extension candidates. Maximal degree in co-relation 4651. Up to 575 conditions per place. [2024-06-14 12:18:05,256 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 124 selfloop transitions, 15 changer transitions 0/164 dead transitions. [2024-06-14 12:18:05,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 164 transitions, 1535 flow [2024-06-14 12:18:05,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:18:05,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:18:05,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-14 12:18:05,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36764705882352944 [2024-06-14 12:18:05,257 INFO L175 Difference]: Start difference. First operand has 171 places, 153 transitions, 1231 flow. Second operand 10 states and 125 transitions. [2024-06-14 12:18:05,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 164 transitions, 1535 flow [2024-06-14 12:18:05,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 164 transitions, 1435 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-14 12:18:05,342 INFO L231 Difference]: Finished difference. Result has 172 places, 153 transitions, 1165 flow [2024-06-14 12:18:05,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1131, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1165, PETRI_PLACES=172, PETRI_TRANSITIONS=153} [2024-06-14 12:18:05,342 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 139 predicate places. [2024-06-14 12:18:05,343 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 153 transitions, 1165 flow [2024-06-14 12:18:05,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:05,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:05,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:05,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-14 12:18:05,343 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:05,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:05,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1309074143, now seen corresponding path program 1 times [2024-06-14 12:18:05,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:05,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692762] [2024-06-14 12:18:05,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:05,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:05,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:06,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:06,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:06,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692762] [2024-06-14 12:18:06,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:06,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:06,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:18:06,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54740808] [2024-06-14 12:18:06,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:06,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:18:06,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:06,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:18:06,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:18:06,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:18:06,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 153 transitions, 1165 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:06,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:06,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:18:06,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:06,686 INFO L124 PetriNetUnfolderBase]: 388/709 cut-off events. [2024-06-14 12:18:06,686 INFO L125 PetriNetUnfolderBase]: For 53024/53026 co-relation queries the response was YES. [2024-06-14 12:18:06,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4829 conditions, 709 events. 388/709 cut-off events. For 53024/53026 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3179 event pairs, 54 based on Foata normal form. 3/712 useless extension candidates. Maximal degree in co-relation 4744. Up to 604 conditions per place. [2024-06-14 12:18:06,691 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 148 selfloop transitions, 25 changer transitions 0/176 dead transitions. [2024-06-14 12:18:06,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 176 transitions, 1609 flow [2024-06-14 12:18:06,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:18:06,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:18:06,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-14 12:18:06,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37941176470588234 [2024-06-14 12:18:06,692 INFO L175 Difference]: Start difference. First operand has 172 places, 153 transitions, 1165 flow. Second operand 10 states and 129 transitions. [2024-06-14 12:18:06,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 176 transitions, 1609 flow [2024-06-14 12:18:06,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 176 transitions, 1571 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-14 12:18:06,763 INFO L231 Difference]: Finished difference. Result has 174 places, 155 transitions, 1220 flow [2024-06-14 12:18:06,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1127, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1220, PETRI_PLACES=174, PETRI_TRANSITIONS=155} [2024-06-14 12:18:06,764 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 141 predicate places. [2024-06-14 12:18:06,764 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 155 transitions, 1220 flow [2024-06-14 12:18:06,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:06,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:06,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:06,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-14 12:18:06,764 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:06,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:06,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1248676568, now seen corresponding path program 1 times [2024-06-14 12:18:06,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:06,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307742928] [2024-06-14 12:18:06,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:06,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:06,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:07,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:07,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:07,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307742928] [2024-06-14 12:18:07,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307742928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:07,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:07,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:18:07,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063500963] [2024-06-14 12:18:07,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:07,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:18:07,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:07,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:18:07,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:18:07,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:18:07,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 155 transitions, 1220 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:07,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:07,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:18:07,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:07,949 INFO L124 PetriNetUnfolderBase]: 394/719 cut-off events. [2024-06-14 12:18:07,950 INFO L125 PetriNetUnfolderBase]: For 56550/56552 co-relation queries the response was YES. [2024-06-14 12:18:07,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4961 conditions, 719 events. 394/719 cut-off events. For 56550/56552 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3221 event pairs, 51 based on Foata normal form. 4/723 useless extension candidates. Maximal degree in co-relation 4875. Up to 601 conditions per place. [2024-06-14 12:18:07,955 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 148 selfloop transitions, 27 changer transitions 0/178 dead transitions. [2024-06-14 12:18:07,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 178 transitions, 1666 flow [2024-06-14 12:18:07,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:18:07,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:18:07,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-14 12:18:07,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37941176470588234 [2024-06-14 12:18:07,956 INFO L175 Difference]: Start difference. First operand has 174 places, 155 transitions, 1220 flow. Second operand 10 states and 129 transitions. [2024-06-14 12:18:07,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 178 transitions, 1666 flow [2024-06-14 12:18:08,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 178 transitions, 1589 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-14 12:18:08,038 INFO L231 Difference]: Finished difference. Result has 176 places, 157 transitions, 1236 flow [2024-06-14 12:18:08,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1143, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1236, PETRI_PLACES=176, PETRI_TRANSITIONS=157} [2024-06-14 12:18:08,038 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 143 predicate places. [2024-06-14 12:18:08,039 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 157 transitions, 1236 flow [2024-06-14 12:18:08,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:08,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:08,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:08,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-14 12:18:08,039 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:08,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:08,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1161458746, now seen corresponding path program 2 times [2024-06-14 12:18:08,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:08,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633630532] [2024-06-14 12:18:08,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:08,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:08,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:08,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:08,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:08,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633630532] [2024-06-14 12:18:08,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633630532] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:08,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:08,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:18:08,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107826862] [2024-06-14 12:18:08,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:08,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:18:08,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:08,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:18:08,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:18:08,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:18:08,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 157 transitions, 1236 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:08,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:08,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:18:08,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:09,205 INFO L124 PetriNetUnfolderBase]: 410/752 cut-off events. [2024-06-14 12:18:09,206 INFO L125 PetriNetUnfolderBase]: For 62457/62457 co-relation queries the response was YES. [2024-06-14 12:18:09,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5291 conditions, 752 events. 410/752 cut-off events. For 62457/62457 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3445 event pairs, 57 based on Foata normal form. 2/754 useless extension candidates. Maximal degree in co-relation 5204. Up to 573 conditions per place. [2024-06-14 12:18:09,211 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 143 selfloop transitions, 35 changer transitions 0/181 dead transitions. [2024-06-14 12:18:09,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 181 transitions, 1840 flow [2024-06-14 12:18:09,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:18:09,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:18:09,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-14 12:18:09,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3941176470588235 [2024-06-14 12:18:09,212 INFO L175 Difference]: Start difference. First operand has 176 places, 157 transitions, 1236 flow. Second operand 10 states and 134 transitions. [2024-06-14 12:18:09,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 181 transitions, 1840 flow [2024-06-14 12:18:09,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 181 transitions, 1763 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-14 12:18:09,311 INFO L231 Difference]: Finished difference. Result has 178 places, 161 transitions, 1306 flow [2024-06-14 12:18:09,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1159, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1306, PETRI_PLACES=178, PETRI_TRANSITIONS=161} [2024-06-14 12:18:09,311 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 145 predicate places. [2024-06-14 12:18:09,311 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 161 transitions, 1306 flow [2024-06-14 12:18:09,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:09,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:09,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:09,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-14 12:18:09,312 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:09,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:09,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1161249496, now seen corresponding path program 3 times [2024-06-14 12:18:09,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:09,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242063840] [2024-06-14 12:18:09,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:09,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:09,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:10,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:10,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:10,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242063840] [2024-06-14 12:18:10,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242063840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:10,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:10,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:18:10,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474921303] [2024-06-14 12:18:10,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:10,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:18:10,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:10,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:18:10,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:18:10,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:18:10,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 161 transitions, 1306 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:10,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:10,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:18:10,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:10,491 INFO L124 PetriNetUnfolderBase]: 416/760 cut-off events. [2024-06-14 12:18:10,492 INFO L125 PetriNetUnfolderBase]: For 64920/64920 co-relation queries the response was YES. [2024-06-14 12:18:10,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5408 conditions, 760 events. 416/760 cut-off events. For 64920/64920 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3475 event pairs, 52 based on Foata normal form. 2/762 useless extension candidates. Maximal degree in co-relation 5320. Up to 579 conditions per place. [2024-06-14 12:18:10,497 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 139 selfloop transitions, 41 changer transitions 0/183 dead transitions. [2024-06-14 12:18:10,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 183 transitions, 1886 flow [2024-06-14 12:18:10,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:18:10,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:18:10,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-14 12:18:10,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38823529411764707 [2024-06-14 12:18:10,504 INFO L175 Difference]: Start difference. First operand has 178 places, 161 transitions, 1306 flow. Second operand 10 states and 132 transitions. [2024-06-14 12:18:10,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 183 transitions, 1886 flow [2024-06-14 12:18:10,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 183 transitions, 1809 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-14 12:18:10,595 INFO L231 Difference]: Finished difference. Result has 182 places, 163 transitions, 1354 flow [2024-06-14 12:18:10,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1233, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1354, PETRI_PLACES=182, PETRI_TRANSITIONS=163} [2024-06-14 12:18:10,595 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 149 predicate places. [2024-06-14 12:18:10,595 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 163 transitions, 1354 flow [2024-06-14 12:18:10,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:10,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:10,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:10,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-14 12:18:10,596 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:10,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:10,596 INFO L85 PathProgramCache]: Analyzing trace with hash -302969333, now seen corresponding path program 1 times [2024-06-14 12:18:10,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:10,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515431588] [2024-06-14 12:18:10,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:10,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:10,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:11,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:11,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:11,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515431588] [2024-06-14 12:18:11,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515431588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:11,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:11,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:18:11,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572076907] [2024-06-14 12:18:11,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:11,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:18:11,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:11,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:18:11,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:18:11,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:18:11,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 163 transitions, 1354 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:11,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:11,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:18:11,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:11,791 INFO L124 PetriNetUnfolderBase]: 419/764 cut-off events. [2024-06-14 12:18:11,791 INFO L125 PetriNetUnfolderBase]: For 65016/65018 co-relation queries the response was YES. [2024-06-14 12:18:11,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5504 conditions, 764 events. 419/764 cut-off events. For 65016/65018 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3501 event pairs, 59 based on Foata normal form. 3/767 useless extension candidates. Maximal degree in co-relation 5414. Up to 679 conditions per place. [2024-06-14 12:18:11,797 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 157 selfloop transitions, 21 changer transitions 0/181 dead transitions. [2024-06-14 12:18:11,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 181 transitions, 1784 flow [2024-06-14 12:18:11,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:18:11,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:18:11,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-14 12:18:11,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36176470588235293 [2024-06-14 12:18:11,798 INFO L175 Difference]: Start difference. First operand has 182 places, 163 transitions, 1354 flow. Second operand 10 states and 123 transitions. [2024-06-14 12:18:11,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 181 transitions, 1784 flow [2024-06-14 12:18:11,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 181 transitions, 1689 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-14 12:18:11,884 INFO L231 Difference]: Finished difference. Result has 185 places, 165 transitions, 1336 flow [2024-06-14 12:18:11,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1259, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1336, PETRI_PLACES=185, PETRI_TRANSITIONS=165} [2024-06-14 12:18:11,884 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 152 predicate places. [2024-06-14 12:18:11,885 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 165 transitions, 1336 flow [2024-06-14 12:18:11,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:11,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:11,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:11,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-14 12:18:11,885 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:11,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:11,885 INFO L85 PathProgramCache]: Analyzing trace with hash 581052456, now seen corresponding path program 4 times [2024-06-14 12:18:11,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:11,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235032541] [2024-06-14 12:18:11,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:11,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:11,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:12,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:12,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:12,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235032541] [2024-06-14 12:18:12,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235032541] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:12,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:12,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:18:12,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675551816] [2024-06-14 12:18:12,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:12,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:18:12,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:12,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:18:12,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:18:12,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:18:12,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 165 transitions, 1336 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:12,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:12,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:18:12,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:13,066 INFO L124 PetriNetUnfolderBase]: 415/759 cut-off events. [2024-06-14 12:18:13,066 INFO L125 PetriNetUnfolderBase]: For 64643/64643 co-relation queries the response was YES. [2024-06-14 12:18:13,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5333 conditions, 759 events. 415/759 cut-off events. For 64643/64643 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3482 event pairs, 51 based on Foata normal form. 2/761 useless extension candidates. Maximal degree in co-relation 5242. Up to 581 conditions per place. [2024-06-14 12:18:13,072 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 142 selfloop transitions, 39 changer transitions 0/184 dead transitions. [2024-06-14 12:18:13,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 184 transitions, 1756 flow [2024-06-14 12:18:13,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:18:13,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:18:13,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-14 12:18:13,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38823529411764707 [2024-06-14 12:18:13,073 INFO L175 Difference]: Start difference. First operand has 185 places, 165 transitions, 1336 flow. Second operand 10 states and 132 transitions. [2024-06-14 12:18:13,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 184 transitions, 1756 flow [2024-06-14 12:18:13,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 184 transitions, 1671 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-14 12:18:13,165 INFO L231 Difference]: Finished difference. Result has 187 places, 165 transitions, 1334 flow [2024-06-14 12:18:13,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1251, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1334, PETRI_PLACES=187, PETRI_TRANSITIONS=165} [2024-06-14 12:18:13,166 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 154 predicate places. [2024-06-14 12:18:13,166 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 165 transitions, 1334 flow [2024-06-14 12:18:13,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:13,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:13,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:13,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-14 12:18:13,166 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:13,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:13,166 INFO L85 PathProgramCache]: Analyzing trace with hash -101620892, now seen corresponding path program 5 times [2024-06-14 12:18:13,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:13,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462417700] [2024-06-14 12:18:13,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:13,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:13,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:14,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:14,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:14,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462417700] [2024-06-14 12:18:14,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462417700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:14,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:14,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:18:14,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158454376] [2024-06-14 12:18:14,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:14,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:18:14,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:14,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:18:14,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:18:14,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:18:14,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 165 transitions, 1334 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:14,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:14,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:18:14,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:14,346 INFO L124 PetriNetUnfolderBase]: 431/785 cut-off events. [2024-06-14 12:18:14,346 INFO L125 PetriNetUnfolderBase]: For 71235/71235 co-relation queries the response was YES. [2024-06-14 12:18:14,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5671 conditions, 785 events. 431/785 cut-off events. For 71235/71235 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3607 event pairs, 53 based on Foata normal form. 2/787 useless extension candidates. Maximal degree in co-relation 5579. Up to 523 conditions per place. [2024-06-14 12:18:14,351 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 122 selfloop transitions, 61 changer transitions 0/186 dead transitions. [2024-06-14 12:18:14,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 186 transitions, 1952 flow [2024-06-14 12:18:14,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:18:14,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:18:14,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-14 12:18:14,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3911764705882353 [2024-06-14 12:18:14,352 INFO L175 Difference]: Start difference. First operand has 187 places, 165 transitions, 1334 flow. Second operand 10 states and 133 transitions. [2024-06-14 12:18:14,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 186 transitions, 1952 flow [2024-06-14 12:18:14,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 186 transitions, 1855 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-14 12:18:14,437 INFO L231 Difference]: Finished difference. Result has 187 places, 169 transitions, 1444 flow [2024-06-14 12:18:14,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1237, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1444, PETRI_PLACES=187, PETRI_TRANSITIONS=169} [2024-06-14 12:18:14,437 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 154 predicate places. [2024-06-14 12:18:14,437 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 169 transitions, 1444 flow [2024-06-14 12:18:14,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:14,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:14,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:14,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-14 12:18:14,438 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:14,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:14,438 INFO L85 PathProgramCache]: Analyzing trace with hash -101620613, now seen corresponding path program 2 times [2024-06-14 12:18:14,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:14,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098790202] [2024-06-14 12:18:14,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:14,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:14,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:15,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:15,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:15,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098790202] [2024-06-14 12:18:15,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098790202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:15,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:15,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:18:15,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150349231] [2024-06-14 12:18:15,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:15,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:18:15,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:15,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:18:15,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:18:15,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:18:15,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 169 transitions, 1444 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:15,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:15,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:18:15,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:15,547 INFO L124 PetriNetUnfolderBase]: 444/805 cut-off events. [2024-06-14 12:18:15,547 INFO L125 PetriNetUnfolderBase]: For 75919/75921 co-relation queries the response was YES. [2024-06-14 12:18:15,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6056 conditions, 805 events. 444/805 cut-off events. For 75919/75921 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3714 event pairs, 63 based on Foata normal form. 3/808 useless extension candidates. Maximal degree in co-relation 5963. Up to 675 conditions per place. [2024-06-14 12:18:15,552 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 148 selfloop transitions, 39 changer transitions 0/190 dead transitions. [2024-06-14 12:18:15,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 190 transitions, 2208 flow [2024-06-14 12:18:15,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:18:15,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:18:15,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-14 12:18:15,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3764705882352941 [2024-06-14 12:18:15,553 INFO L175 Difference]: Start difference. First operand has 187 places, 169 transitions, 1444 flow. Second operand 10 states and 128 transitions. [2024-06-14 12:18:15,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 190 transitions, 2208 flow [2024-06-14 12:18:15,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 190 transitions, 2106 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-14 12:18:15,665 INFO L231 Difference]: Finished difference. Result has 191 places, 175 transitions, 1519 flow [2024-06-14 12:18:15,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1342, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1519, PETRI_PLACES=191, PETRI_TRANSITIONS=175} [2024-06-14 12:18:15,665 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 158 predicate places. [2024-06-14 12:18:15,665 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 175 transitions, 1519 flow [2024-06-14 12:18:15,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:15,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:15,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:15,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-14 12:18:15,666 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:15,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:15,666 INFO L85 PathProgramCache]: Analyzing trace with hash -101611313, now seen corresponding path program 3 times [2024-06-14 12:18:15,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:15,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068461966] [2024-06-14 12:18:15,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:15,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:15,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:16,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:16,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:16,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068461966] [2024-06-14 12:18:16,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068461966] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:16,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:16,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:18:16,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710311283] [2024-06-14 12:18:16,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:16,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:18:16,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:16,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:18:16,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:18:16,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:18:16,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 175 transitions, 1519 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:16,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:16,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:18:16,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:16,801 INFO L124 PetriNetUnfolderBase]: 442/802 cut-off events. [2024-06-14 12:18:16,802 INFO L125 PetriNetUnfolderBase]: For 75743/75745 co-relation queries the response was YES. [2024-06-14 12:18:16,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6004 conditions, 802 events. 442/802 cut-off events. For 75743/75745 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3718 event pairs, 63 based on Foata normal form. 3/805 useless extension candidates. Maximal degree in co-relation 5909. Up to 673 conditions per place. [2024-06-14 12:18:16,808 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 144 selfloop transitions, 42 changer transitions 0/189 dead transitions. [2024-06-14 12:18:16,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 189 transitions, 2061 flow [2024-06-14 12:18:16,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:18:16,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:18:16,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-14 12:18:16,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37058823529411766 [2024-06-14 12:18:16,809 INFO L175 Difference]: Start difference. First operand has 191 places, 175 transitions, 1519 flow. Second operand 10 states and 126 transitions. [2024-06-14 12:18:16,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 189 transitions, 2061 flow [2024-06-14 12:18:16,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 189 transitions, 1976 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-14 12:18:16,918 INFO L231 Difference]: Finished difference. Result has 196 places, 175 transitions, 1523 flow [2024-06-14 12:18:16,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1434, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1523, PETRI_PLACES=196, PETRI_TRANSITIONS=175} [2024-06-14 12:18:16,919 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 163 predicate places. [2024-06-14 12:18:16,919 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 175 transitions, 1523 flow [2024-06-14 12:18:16,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:16,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:16,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:16,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-14 12:18:16,919 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:16,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:16,919 INFO L85 PathProgramCache]: Analyzing trace with hash -101610972, now seen corresponding path program 1 times [2024-06-14 12:18:16,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:16,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869584321] [2024-06-14 12:18:16,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:16,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:16,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:17,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:17,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:17,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869584321] [2024-06-14 12:18:17,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869584321] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:17,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:17,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:18:17,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851625404] [2024-06-14 12:18:17,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:17,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:18:17,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:17,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:18:17,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:18:17,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-06-14 12:18:17,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 175 transitions, 1523 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:17,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:17,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-06-14 12:18:17,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:18,173 INFO L124 PetriNetUnfolderBase]: 422/781 cut-off events. [2024-06-14 12:18:18,173 INFO L125 PetriNetUnfolderBase]: For 78341/78345 co-relation queries the response was YES. [2024-06-14 12:18:18,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5908 conditions, 781 events. 422/781 cut-off events. For 78341/78345 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3706 event pairs, 60 based on Foata normal form. 5/786 useless extension candidates. Maximal degree in co-relation 5811. Up to 648 conditions per place. [2024-06-14 12:18:18,179 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 143 selfloop transitions, 18 changer transitions 0/190 dead transitions. [2024-06-14 12:18:18,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 190 transitions, 1905 flow [2024-06-14 12:18:18,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:18:18,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:18:18,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-14 12:18:18,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37941176470588234 [2024-06-14 12:18:18,180 INFO L175 Difference]: Start difference. First operand has 196 places, 175 transitions, 1523 flow. Second operand 10 states and 129 transitions. [2024-06-14 12:18:18,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 190 transitions, 1905 flow [2024-06-14 12:18:18,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 190 transitions, 1827 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-14 12:18:18,296 INFO L231 Difference]: Finished difference. Result has 198 places, 177 transitions, 1514 flow [2024-06-14 12:18:18,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1445, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1514, PETRI_PLACES=198, PETRI_TRANSITIONS=177} [2024-06-14 12:18:18,296 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 165 predicate places. [2024-06-14 12:18:18,296 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 177 transitions, 1514 flow [2024-06-14 12:18:18,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:18,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:18,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:18,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-14 12:18:18,296 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:18,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:18,297 INFO L85 PathProgramCache]: Analyzing trace with hash -101887802, now seen corresponding path program 6 times [2024-06-14 12:18:18,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:18,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410612269] [2024-06-14 12:18:18,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:18,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:18,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:19,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:19,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:19,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410612269] [2024-06-14 12:18:19,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410612269] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:19,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:19,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:18:19,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671310346] [2024-06-14 12:18:19,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:19,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:18:19,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:19,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:18:19,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:18:19,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:18:19,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 177 transitions, 1514 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:19,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:19,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:18:19,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:19,478 INFO L124 PetriNetUnfolderBase]: 461/836 cut-off events. [2024-06-14 12:18:19,478 INFO L125 PetriNetUnfolderBase]: For 87154/87154 co-relation queries the response was YES. [2024-06-14 12:18:19,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6429 conditions, 836 events. 461/836 cut-off events. For 87154/87154 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3927 event pairs, 55 based on Foata normal form. 2/838 useless extension candidates. Maximal degree in co-relation 6331. Up to 561 conditions per place. [2024-06-14 12:18:19,484 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 137 selfloop transitions, 59 changer transitions 0/199 dead transitions. [2024-06-14 12:18:19,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 199 transitions, 2308 flow [2024-06-14 12:18:19,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:18:19,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:18:19,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-14 12:18:19,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39705882352941174 [2024-06-14 12:18:19,485 INFO L175 Difference]: Start difference. First operand has 198 places, 177 transitions, 1514 flow. Second operand 10 states and 135 transitions. [2024-06-14 12:18:19,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 199 transitions, 2308 flow [2024-06-14 12:18:19,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 199 transitions, 2255 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-14 12:18:19,624 INFO L231 Difference]: Finished difference. Result has 200 places, 181 transitions, 1664 flow [2024-06-14 12:18:19,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1461, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1664, PETRI_PLACES=200, PETRI_TRANSITIONS=181} [2024-06-14 12:18:19,625 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 167 predicate places. [2024-06-14 12:18:19,625 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 181 transitions, 1664 flow [2024-06-14 12:18:19,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:19,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:19,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:19,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-14 12:18:19,626 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:19,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:19,626 INFO L85 PathProgramCache]: Analyzing trace with hash -506267648, now seen corresponding path program 7 times [2024-06-14 12:18:19,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:19,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654939569] [2024-06-14 12:18:19,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:19,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:19,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:20,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:20,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:20,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654939569] [2024-06-14 12:18:20,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654939569] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:20,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:20,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:18:20,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028918441] [2024-06-14 12:18:20,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:20,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:18:20,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:20,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:18:20,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:18:20,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:18:20,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 181 transitions, 1664 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:20,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:20,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:18:20,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:20,823 INFO L124 PetriNetUnfolderBase]: 467/848 cut-off events. [2024-06-14 12:18:20,823 INFO L125 PetriNetUnfolderBase]: For 90336/90336 co-relation queries the response was YES. [2024-06-14 12:18:20,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6649 conditions, 848 events. 467/848 cut-off events. For 90336/90336 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4000 event pairs, 66 based on Foata normal form. 2/850 useless extension candidates. Maximal degree in co-relation 6550. Up to 567 conditions per place. [2024-06-14 12:18:20,830 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 138 selfloop transitions, 59 changer transitions 0/200 dead transitions. [2024-06-14 12:18:20,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 200 transitions, 2288 flow [2024-06-14 12:18:20,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:18:20,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:18:20,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-14 12:18:20,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39705882352941174 [2024-06-14 12:18:20,831 INFO L175 Difference]: Start difference. First operand has 200 places, 181 transitions, 1664 flow. Second operand 10 states and 135 transitions. [2024-06-14 12:18:20,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 200 transitions, 2288 flow [2024-06-14 12:18:21,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 200 transitions, 2167 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-14 12:18:21,021 INFO L231 Difference]: Finished difference. Result has 204 places, 183 transitions, 1710 flow [2024-06-14 12:18:21,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1545, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1710, PETRI_PLACES=204, PETRI_TRANSITIONS=183} [2024-06-14 12:18:21,022 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 171 predicate places. [2024-06-14 12:18:21,022 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 183 transitions, 1710 flow [2024-06-14 12:18:21,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:21,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:21,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:21,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-14 12:18:21,022 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:21,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:21,023 INFO L85 PathProgramCache]: Analyzing trace with hash -101880362, now seen corresponding path program 8 times [2024-06-14 12:18:21,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:21,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969864442] [2024-06-14 12:18:21,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:21,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:21,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:21,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:21,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:21,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969864442] [2024-06-14 12:18:21,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969864442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:21,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:21,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:18:21,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900016601] [2024-06-14 12:18:21,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:21,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:18:21,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:21,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:18:21,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:18:21,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:18:21,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 183 transitions, 1710 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:21,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:21,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:18:21,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:22,275 INFO L124 PetriNetUnfolderBase]: 463/840 cut-off events. [2024-06-14 12:18:22,275 INFO L125 PetriNetUnfolderBase]: For 87836/87836 co-relation queries the response was YES. [2024-06-14 12:18:22,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6473 conditions, 840 events. 463/840 cut-off events. For 87836/87836 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3943 event pairs, 57 based on Foata normal form. 2/842 useless extension candidates. Maximal degree in co-relation 6373. Up to 564 conditions per place. [2024-06-14 12:18:22,284 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 138 selfloop transitions, 60 changer transitions 0/201 dead transitions. [2024-06-14 12:18:22,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 201 transitions, 2298 flow [2024-06-14 12:18:22,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:18:22,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:18:22,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-14 12:18:22,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-14 12:18:22,285 INFO L175 Difference]: Start difference. First operand has 204 places, 183 transitions, 1710 flow. Second operand 10 states and 136 transitions. [2024-06-14 12:18:22,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 201 transitions, 2298 flow [2024-06-14 12:18:22,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 201 transitions, 2115 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-14 12:18:22,472 INFO L231 Difference]: Finished difference. Result has 206 places, 183 transitions, 1652 flow [2024-06-14 12:18:22,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1527, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1652, PETRI_PLACES=206, PETRI_TRANSITIONS=183} [2024-06-14 12:18:22,473 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 173 predicate places. [2024-06-14 12:18:22,473 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 183 transitions, 1652 flow [2024-06-14 12:18:22,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:22,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:22,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:22,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-14 12:18:22,473 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:22,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:22,473 INFO L85 PathProgramCache]: Analyzing trace with hash -506065838, now seen corresponding path program 9 times [2024-06-14 12:18:22,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:22,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601963143] [2024-06-14 12:18:22,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:22,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:22,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:23,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:23,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:23,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601963143] [2024-06-14 12:18:23,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601963143] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:23,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:23,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:18:23,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822930264] [2024-06-14 12:18:23,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:23,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:18:23,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:23,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:18:23,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:18:23,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:18:23,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 183 transitions, 1652 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:23,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:23,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:18:23,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:23,714 INFO L124 PetriNetUnfolderBase]: 469/852 cut-off events. [2024-06-14 12:18:23,714 INFO L125 PetriNetUnfolderBase]: For 90220/90220 co-relation queries the response was YES. [2024-06-14 12:18:23,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6453 conditions, 852 events. 469/852 cut-off events. For 90220/90220 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4031 event pairs, 65 based on Foata normal form. 2/854 useless extension candidates. Maximal degree in co-relation 6353. Up to 570 conditions per place. [2024-06-14 12:18:23,721 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 142 selfloop transitions, 58 changer transitions 0/203 dead transitions. [2024-06-14 12:18:23,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 203 transitions, 2286 flow [2024-06-14 12:18:23,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:18:23,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:18:23,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-14 12:18:23,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40588235294117647 [2024-06-14 12:18:23,723 INFO L175 Difference]: Start difference. First operand has 206 places, 183 transitions, 1652 flow. Second operand 10 states and 138 transitions. [2024-06-14 12:18:23,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 203 transitions, 2286 flow [2024-06-14 12:18:23,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 203 transitions, 2156 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-14 12:18:23,875 INFO L231 Difference]: Finished difference. Result has 207 places, 185 transitions, 1683 flow [2024-06-14 12:18:23,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1526, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1683, PETRI_PLACES=207, PETRI_TRANSITIONS=185} [2024-06-14 12:18:23,876 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 174 predicate places. [2024-06-14 12:18:23,876 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 185 transitions, 1683 flow [2024-06-14 12:18:23,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:23,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:23,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:23,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-14 12:18:23,876 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:23,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:23,876 INFO L85 PathProgramCache]: Analyzing trace with hash -101880083, now seen corresponding path program 4 times [2024-06-14 12:18:23,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:23,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691163925] [2024-06-14 12:18:23,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:23,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:23,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:24,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:24,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:24,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691163925] [2024-06-14 12:18:24,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691163925] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:24,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:24,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:18:24,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852276700] [2024-06-14 12:18:24,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:24,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:18:24,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:24,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:18:24,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:18:24,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:18:24,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 185 transitions, 1683 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:24,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:24,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:18:24,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:25,109 INFO L124 PetriNetUnfolderBase]: 472/856 cut-off events. [2024-06-14 12:18:25,109 INFO L125 PetriNetUnfolderBase]: For 90164/90166 co-relation queries the response was YES. [2024-06-14 12:18:25,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6511 conditions, 856 events. 472/856 cut-off events. For 90164/90166 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4052 event pairs, 66 based on Foata normal form. 3/859 useless extension candidates. Maximal degree in co-relation 6410. Up to 722 conditions per place. [2024-06-14 12:18:25,118 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 159 selfloop transitions, 39 changer transitions 0/201 dead transitions. [2024-06-14 12:18:25,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 201 transitions, 2293 flow [2024-06-14 12:18:25,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:18:25,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:18:25,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-14 12:18:25,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3764705882352941 [2024-06-14 12:18:25,120 INFO L175 Difference]: Start difference. First operand has 207 places, 185 transitions, 1683 flow. Second operand 10 states and 128 transitions. [2024-06-14 12:18:25,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 201 transitions, 2293 flow [2024-06-14 12:18:25,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 201 transitions, 2111 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-14 12:18:25,288 INFO L231 Difference]: Finished difference. Result has 208 places, 187 transitions, 1616 flow [2024-06-14 12:18:25,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1501, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1616, PETRI_PLACES=208, PETRI_TRANSITIONS=187} [2024-06-14 12:18:25,289 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 175 predicate places. [2024-06-14 12:18:25,289 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 187 transitions, 1616 flow [2024-06-14 12:18:25,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:25,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:25,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:25,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-14 12:18:25,289 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:25,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:25,290 INFO L85 PathProgramCache]: Analyzing trace with hash -506058398, now seen corresponding path program 10 times [2024-06-14 12:18:25,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:25,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997497678] [2024-06-14 12:18:25,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:25,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:25,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:26,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:26,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:26,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997497678] [2024-06-14 12:18:26,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997497678] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:26,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:26,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:18:26,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972380803] [2024-06-14 12:18:26,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:26,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:18:26,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:26,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:18:26,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:18:26,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:18:26,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 187 transitions, 1616 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:26,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:26,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:18:26,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:26,532 INFO L124 PetriNetUnfolderBase]: 468/851 cut-off events. [2024-06-14 12:18:26,532 INFO L125 PetriNetUnfolderBase]: For 89563/89563 co-relation queries the response was YES. [2024-06-14 12:18:26,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6257 conditions, 851 events. 468/851 cut-off events. For 89563/89563 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4029 event pairs, 64 based on Foata normal form. 2/853 useless extension candidates. Maximal degree in co-relation 6155. Up to 572 conditions per place. [2024-06-14 12:18:26,538 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 142 selfloop transitions, 59 changer transitions 0/204 dead transitions. [2024-06-14 12:18:26,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 204 transitions, 2068 flow [2024-06-14 12:18:26,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:18:26,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:18:26,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-14 12:18:26,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-14 12:18:26,539 INFO L175 Difference]: Start difference. First operand has 208 places, 187 transitions, 1616 flow. Second operand 10 states and 136 transitions. [2024-06-14 12:18:26,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 204 transitions, 2068 flow [2024-06-14 12:18:26,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 204 transitions, 1962 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-14 12:18:26,679 INFO L231 Difference]: Finished difference. Result has 211 places, 187 transitions, 1633 flow [2024-06-14 12:18:26,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1510, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1633, PETRI_PLACES=211, PETRI_TRANSITIONS=187} [2024-06-14 12:18:26,680 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 178 predicate places. [2024-06-14 12:18:26,680 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 187 transitions, 1633 flow [2024-06-14 12:18:26,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:26,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:26,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:26,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-14 12:18:26,680 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:26,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:26,680 INFO L85 PathProgramCache]: Analyzing trace with hash -109029923, now seen corresponding path program 5 times [2024-06-14 12:18:26,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:26,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245162683] [2024-06-14 12:18:26,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:26,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:26,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:27,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:27,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:27,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245162683] [2024-06-14 12:18:27,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245162683] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:27,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:27,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:18:27,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568028332] [2024-06-14 12:18:27,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:27,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:18:27,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:27,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:18:27,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:18:27,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:18:27,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 187 transitions, 1633 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:27,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:27,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:18:27,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:27,864 INFO L124 PetriNetUnfolderBase]: 466/847 cut-off events. [2024-06-14 12:18:27,864 INFO L125 PetriNetUnfolderBase]: For 86368/86370 co-relation queries the response was YES. [2024-06-14 12:18:27,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6220 conditions, 847 events. 466/847 cut-off events. For 86368/86370 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4005 event pairs, 65 based on Foata normal form. 3/850 useless extension candidates. Maximal degree in co-relation 6117. Up to 714 conditions per place. [2024-06-14 12:18:27,870 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 159 selfloop transitions, 38 changer transitions 0/200 dead transitions. [2024-06-14 12:18:27,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 200 transitions, 2063 flow [2024-06-14 12:18:27,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:18:27,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:18:27,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-14 12:18:27,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3764705882352941 [2024-06-14 12:18:27,871 INFO L175 Difference]: Start difference. First operand has 211 places, 187 transitions, 1633 flow. Second operand 10 states and 128 transitions. [2024-06-14 12:18:27,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 200 transitions, 2063 flow [2024-06-14 12:18:28,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 200 transitions, 1895 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-14 12:18:28,032 INFO L231 Difference]: Finished difference. Result has 211 places, 187 transitions, 1546 flow [2024-06-14 12:18:28,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1465, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1546, PETRI_PLACES=211, PETRI_TRANSITIONS=187} [2024-06-14 12:18:28,032 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 178 predicate places. [2024-06-14 12:18:28,033 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 187 transitions, 1546 flow [2024-06-14 12:18:28,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:28,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:28,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:28,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-14 12:18:28,033 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:28,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:28,034 INFO L85 PathProgramCache]: Analyzing trace with hash -135796712, now seen corresponding path program 11 times [2024-06-14 12:18:28,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:28,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456413038] [2024-06-14 12:18:28,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:28,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:28,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:28,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:28,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:28,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456413038] [2024-06-14 12:18:28,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456413038] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:28,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:28,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:18:28,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289326465] [2024-06-14 12:18:28,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:28,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:18:28,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:28,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:18:28,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:18:29,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:18:29,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 187 transitions, 1546 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:29,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:29,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:18:29,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:29,268 INFO L124 PetriNetUnfolderBase]: 497/901 cut-off events. [2024-06-14 12:18:29,268 INFO L125 PetriNetUnfolderBase]: For 106006/106010 co-relation queries the response was YES. [2024-06-14 12:18:29,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6864 conditions, 901 events. 497/901 cut-off events. For 106006/106010 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4326 event pairs, 81 based on Foata normal form. 2/903 useless extension candidates. Maximal degree in co-relation 6760. Up to 477 conditions per place. [2024-06-14 12:18:29,275 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 124 selfloop transitions, 86 changer transitions 0/213 dead transitions. [2024-06-14 12:18:29,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 213 transitions, 2618 flow [2024-06-14 12:18:29,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:18:29,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:18:29,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 141 transitions. [2024-06-14 12:18:29,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147058823529412 [2024-06-14 12:18:29,276 INFO L175 Difference]: Start difference. First operand has 211 places, 187 transitions, 1546 flow. Second operand 10 states and 141 transitions. [2024-06-14 12:18:29,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 213 transitions, 2618 flow [2024-06-14 12:18:29,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 213 transitions, 2491 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 12:18:29,447 INFO L231 Difference]: Finished difference. Result has 210 places, 195 transitions, 1752 flow [2024-06-14 12:18:29,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1419, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1752, PETRI_PLACES=210, PETRI_TRANSITIONS=195} [2024-06-14 12:18:29,447 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 177 predicate places. [2024-06-14 12:18:29,447 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 195 transitions, 1752 flow [2024-06-14 12:18:29,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:29,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:29,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:29,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-14 12:18:29,448 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:29,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:29,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1177795840, now seen corresponding path program 12 times [2024-06-14 12:18:29,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:29,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223643999] [2024-06-14 12:18:29,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:29,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:29,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:30,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:30,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:30,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223643999] [2024-06-14 12:18:30,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223643999] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:30,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:30,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:18:30,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937590014] [2024-06-14 12:18:30,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:30,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:18:30,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:30,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:18:30,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:18:30,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:18:30,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 195 transitions, 1752 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:30,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:30,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:18:30,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:30,625 INFO L124 PetriNetUnfolderBase]: 493/897 cut-off events. [2024-06-14 12:18:30,625 INFO L125 PetriNetUnfolderBase]: For 103540/103544 co-relation queries the response was YES. [2024-06-14 12:18:30,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6844 conditions, 897 events. 493/897 cut-off events. For 103540/103544 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4302 event pairs, 78 based on Foata normal form. 2/899 useless extension candidates. Maximal degree in co-relation 6739. Up to 474 conditions per place. [2024-06-14 12:18:30,632 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 122 selfloop transitions, 87 changer transitions 0/212 dead transitions. [2024-06-14 12:18:30,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 212 transitions, 2522 flow [2024-06-14 12:18:30,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:18:30,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:18:30,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 139 transitions. [2024-06-14 12:18:30,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4088235294117647 [2024-06-14 12:18:30,633 INFO L175 Difference]: Start difference. First operand has 210 places, 195 transitions, 1752 flow. Second operand 10 states and 139 transitions. [2024-06-14 12:18:30,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 212 transitions, 2522 flow [2024-06-14 12:18:30,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 212 transitions, 2325 flow, removed 41 selfloop flow, removed 5 redundant places. [2024-06-14 12:18:30,793 INFO L231 Difference]: Finished difference. Result has 215 places, 195 transitions, 1734 flow [2024-06-14 12:18:30,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1555, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1734, PETRI_PLACES=215, PETRI_TRANSITIONS=195} [2024-06-14 12:18:30,794 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 182 predicate places. [2024-06-14 12:18:30,794 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 195 transitions, 1734 flow [2024-06-14 12:18:30,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:30,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:30,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:30,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-14 12:18:30,795 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:30,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:30,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1215396388, now seen corresponding path program 2 times [2024-06-14 12:18:30,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:30,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028859672] [2024-06-14 12:18:30,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:30,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:30,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:31,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:31,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:31,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028859672] [2024-06-14 12:18:31,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028859672] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:31,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:31,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:18:31,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389209207] [2024-06-14 12:18:31,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:31,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:18:31,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:31,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:18:31,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:18:31,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-06-14 12:18:31,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 195 transitions, 1734 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:31,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:31,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-06-14 12:18:31,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:32,277 INFO L124 PetriNetUnfolderBase]: 469/869 cut-off events. [2024-06-14 12:18:32,277 INFO L125 PetriNetUnfolderBase]: For 103486/103491 co-relation queries the response was YES. [2024-06-14 12:18:32,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6663 conditions, 869 events. 469/869 cut-off events. For 103486/103491 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4263 event pairs, 73 based on Foata normal form. 4/871 useless extension candidates. Maximal degree in co-relation 6557. Up to 733 conditions per place. [2024-06-14 12:18:32,285 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 160 selfloop transitions, 18 changer transitions 0/208 dead transitions. [2024-06-14 12:18:32,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 208 transitions, 2144 flow [2024-06-14 12:18:32,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:18:32,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:18:32,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-14 12:18:32,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3663101604278075 [2024-06-14 12:18:32,286 INFO L175 Difference]: Start difference. First operand has 215 places, 195 transitions, 1734 flow. Second operand 11 states and 137 transitions. [2024-06-14 12:18:32,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 208 transitions, 2144 flow [2024-06-14 12:18:32,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 208 transitions, 1972 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-14 12:18:32,495 INFO L231 Difference]: Finished difference. Result has 218 places, 197 transitions, 1636 flow [2024-06-14 12:18:32,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1562, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1636, PETRI_PLACES=218, PETRI_TRANSITIONS=197} [2024-06-14 12:18:32,495 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 185 predicate places. [2024-06-14 12:18:32,495 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 197 transitions, 1636 flow [2024-06-14 12:18:32,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:32,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:32,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:32,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-14 12:18:32,495 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:32,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:32,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1177796119, now seen corresponding path program 6 times [2024-06-14 12:18:32,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:32,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260681791] [2024-06-14 12:18:32,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:32,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:32,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:33,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:33,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:33,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260681791] [2024-06-14 12:18:33,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260681791] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:33,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:33,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:18:33,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375119295] [2024-06-14 12:18:33,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:33,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:18:33,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:33,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:18:33,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:18:33,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:18:33,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 197 transitions, 1636 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:33,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:33,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:18:33,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:33,653 INFO L124 PetriNetUnfolderBase]: 499/905 cut-off events. [2024-06-14 12:18:33,653 INFO L125 PetriNetUnfolderBase]: For 104767/104771 co-relation queries the response was YES. [2024-06-14 12:18:33,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6790 conditions, 905 events. 499/905 cut-off events. For 104767/104771 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4345 event pairs, 79 based on Foata normal form. 5/910 useless extension candidates. Maximal degree in co-relation 6683. Up to 673 conditions per place. [2024-06-14 12:18:33,660 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 144 selfloop transitions, 66 changer transitions 0/213 dead transitions. [2024-06-14 12:18:33,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 213 transitions, 2312 flow [2024-06-14 12:18:33,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:18:33,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:18:33,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-14 12:18:33,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38529411764705884 [2024-06-14 12:18:33,661 INFO L175 Difference]: Start difference. First operand has 218 places, 197 transitions, 1636 flow. Second operand 10 states and 131 transitions. [2024-06-14 12:18:33,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 213 transitions, 2312 flow [2024-06-14 12:18:33,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 213 transitions, 2256 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-14 12:18:33,828 INFO L231 Difference]: Finished difference. Result has 219 places, 201 transitions, 1789 flow [2024-06-14 12:18:33,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1580, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1789, PETRI_PLACES=219, PETRI_TRANSITIONS=201} [2024-06-14 12:18:33,829 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 186 predicate places. [2024-06-14 12:18:33,829 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 201 transitions, 1789 flow [2024-06-14 12:18:33,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:33,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:33,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:33,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-14 12:18:33,829 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:33,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:33,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1177586590, now seen corresponding path program 13 times [2024-06-14 12:18:33,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:33,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841030893] [2024-06-14 12:18:33,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:33,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:33,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:34,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:34,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:34,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841030893] [2024-06-14 12:18:34,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841030893] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:34,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:34,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:18:34,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685843449] [2024-06-14 12:18:34,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:34,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:18:34,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:34,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:18:34,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:18:34,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:18:34,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 201 transitions, 1789 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:34,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:34,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:18:34,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:35,001 INFO L124 PetriNetUnfolderBase]: 495/899 cut-off events. [2024-06-14 12:18:35,001 INFO L125 PetriNetUnfolderBase]: For 104556/104560 co-relation queries the response was YES. [2024-06-14 12:18:35,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6741 conditions, 899 events. 495/899 cut-off events. For 104556/104560 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4329 event pairs, 82 based on Foata normal form. 2/901 useless extension candidates. Maximal degree in co-relation 6633. Up to 481 conditions per place. [2024-06-14 12:18:35,009 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 120 selfloop transitions, 93 changer transitions 0/216 dead transitions. [2024-06-14 12:18:35,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 216 transitions, 2415 flow [2024-06-14 12:18:35,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:18:35,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:18:35,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-14 12:18:35,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-14 12:18:35,017 INFO L175 Difference]: Start difference. First operand has 219 places, 201 transitions, 1789 flow. Second operand 10 states and 136 transitions. [2024-06-14 12:18:35,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 216 transitions, 2415 flow [2024-06-14 12:18:35,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 216 transitions, 2261 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-14 12:18:35,206 INFO L231 Difference]: Finished difference. Result has 222 places, 201 transitions, 1826 flow [2024-06-14 12:18:35,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1635, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1826, PETRI_PLACES=222, PETRI_TRANSITIONS=201} [2024-06-14 12:18:35,207 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 189 predicate places. [2024-06-14 12:18:35,207 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 201 transitions, 1826 flow [2024-06-14 12:18:35,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:35,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:35,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:35,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-14 12:18:35,207 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:35,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:35,208 INFO L85 PathProgramCache]: Analyzing trace with hash 641831110, now seen corresponding path program 14 times [2024-06-14 12:18:35,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:35,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453756375] [2024-06-14 12:18:35,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:35,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:35,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:36,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:36,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:36,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453756375] [2024-06-14 12:18:36,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453756375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:36,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:36,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:18:36,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309590367] [2024-06-14 12:18:36,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:36,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:18:36,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:36,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:18:36,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:18:36,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:18:36,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 201 transitions, 1826 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:36,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:36,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:18:36,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:36,485 INFO L124 PetriNetUnfolderBase]: 511/931 cut-off events. [2024-06-14 12:18:36,485 INFO L125 PetriNetUnfolderBase]: For 113889/113893 co-relation queries the response was YES. [2024-06-14 12:18:36,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7178 conditions, 931 events. 511/931 cut-off events. For 113889/113893 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4538 event pairs, 81 based on Foata normal form. 2/933 useless extension candidates. Maximal degree in co-relation 7069. Up to 496 conditions per place. [2024-06-14 12:18:36,498 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 131 selfloop transitions, 88 changer transitions 0/222 dead transitions. [2024-06-14 12:18:36,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 222 transitions, 2712 flow [2024-06-14 12:18:36,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:18:36,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:18:36,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 141 transitions. [2024-06-14 12:18:36,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147058823529412 [2024-06-14 12:18:36,500 INFO L175 Difference]: Start difference. First operand has 222 places, 201 transitions, 1826 flow. Second operand 10 states and 141 transitions. [2024-06-14 12:18:36,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 222 transitions, 2712 flow [2024-06-14 12:18:36,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 222 transitions, 2521 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-14 12:18:36,709 INFO L231 Difference]: Finished difference. Result has 223 places, 205 transitions, 1896 flow [2024-06-14 12:18:36,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1643, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1896, PETRI_PLACES=223, PETRI_TRANSITIONS=205} [2024-06-14 12:18:36,709 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 190 predicate places. [2024-06-14 12:18:36,709 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 205 transitions, 1896 flow [2024-06-14 12:18:36,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:36,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:36,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:36,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-14 12:18:36,710 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:36,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:36,710 INFO L85 PathProgramCache]: Analyzing trace with hash 642107599, now seen corresponding path program 7 times [2024-06-14 12:18:36,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:36,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120175270] [2024-06-14 12:18:36,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:36,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:36,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:37,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:37,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:37,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120175270] [2024-06-14 12:18:37,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120175270] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:37,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:37,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:18:37,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852954643] [2024-06-14 12:18:37,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:37,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:18:37,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:37,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:18:37,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:18:37,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:18:37,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 205 transitions, 1896 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:37,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:37,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:18:37,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:37,875 INFO L124 PetriNetUnfolderBase]: 519/942 cut-off events. [2024-06-14 12:18:37,876 INFO L125 PetriNetUnfolderBase]: For 117000/117004 co-relation queries the response was YES. [2024-06-14 12:18:37,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7364 conditions, 942 events. 519/942 cut-off events. For 117000/117004 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4599 event pairs, 79 based on Foata normal form. 5/947 useless extension candidates. Maximal degree in co-relation 7254. Up to 703 conditions per place. [2024-06-14 12:18:37,884 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 152 selfloop transitions, 67 changer transitions 0/222 dead transitions. [2024-06-14 12:18:37,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 222 transitions, 2756 flow [2024-06-14 12:18:37,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:18:37,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:18:37,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-14 12:18:37,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3911764705882353 [2024-06-14 12:18:37,885 INFO L175 Difference]: Start difference. First operand has 223 places, 205 transitions, 1896 flow. Second operand 10 states and 133 transitions. [2024-06-14 12:18:37,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 222 transitions, 2756 flow [2024-06-14 12:18:38,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 222 transitions, 2579 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-14 12:18:38,091 INFO L231 Difference]: Finished difference. Result has 227 places, 209 transitions, 1922 flow [2024-06-14 12:18:38,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1719, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1922, PETRI_PLACES=227, PETRI_TRANSITIONS=209} [2024-06-14 12:18:38,092 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 194 predicate places. [2024-06-14 12:18:38,092 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 209 transitions, 1922 flow [2024-06-14 12:18:38,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:38,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:38,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:38,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-14 12:18:38,092 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:38,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:38,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1184945959, now seen corresponding path program 8 times [2024-06-14 12:18:38,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:38,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522632819] [2024-06-14 12:18:38,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:38,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:38,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:38,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:38,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:38,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522632819] [2024-06-14 12:18:38,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522632819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:38,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:38,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:18:38,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638804842] [2024-06-14 12:18:38,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:38,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:18:38,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:38,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:18:38,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:18:39,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:18:39,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 209 transitions, 1922 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:39,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:39,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:18:39,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:39,297 INFO L124 PetriNetUnfolderBase]: 522/947 cut-off events. [2024-06-14 12:18:39,297 INFO L125 PetriNetUnfolderBase]: For 119786/119790 co-relation queries the response was YES. [2024-06-14 12:18:39,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7352 conditions, 947 events. 522/947 cut-off events. For 119786/119790 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4633 event pairs, 79 based on Foata normal form. 5/952 useless extension candidates. Maximal degree in co-relation 7241. Up to 707 conditions per place. [2024-06-14 12:18:39,305 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 155 selfloop transitions, 66 changer transitions 0/224 dead transitions. [2024-06-14 12:18:39,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 224 transitions, 2762 flow [2024-06-14 12:18:39,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:18:39,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:18:39,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-14 12:18:39,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39705882352941174 [2024-06-14 12:18:39,306 INFO L175 Difference]: Start difference. First operand has 227 places, 209 transitions, 1922 flow. Second operand 10 states and 135 transitions. [2024-06-14 12:18:39,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 224 transitions, 2762 flow [2024-06-14 12:18:39,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 224 transitions, 2623 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-14 12:18:39,508 INFO L231 Difference]: Finished difference. Result has 231 places, 211 transitions, 1956 flow [2024-06-14 12:18:39,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1789, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1956, PETRI_PLACES=231, PETRI_TRANSITIONS=211} [2024-06-14 12:18:39,508 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 198 predicate places. [2024-06-14 12:18:39,508 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 211 transitions, 1956 flow [2024-06-14 12:18:39,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:39,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:39,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:39,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-14 12:18:39,509 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:39,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:39,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1203958907, now seen corresponding path program 9 times [2024-06-14 12:18:39,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:39,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966020752] [2024-06-14 12:18:39,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:39,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:39,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:40,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:40,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:40,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966020752] [2024-06-14 12:18:40,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966020752] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:40,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:40,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:18:40,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919725951] [2024-06-14 12:18:40,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:40,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:18:40,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:40,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:18:40,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:18:40,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:18:40,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 211 transitions, 1956 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:40,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:40,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:18:40,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:40,699 INFO L124 PetriNetUnfolderBase]: 530/960 cut-off events. [2024-06-14 12:18:40,699 INFO L125 PetriNetUnfolderBase]: For 126403/126407 co-relation queries the response was YES. [2024-06-14 12:18:40,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7559 conditions, 960 events. 530/960 cut-off events. For 126403/126407 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4700 event pairs, 79 based on Foata normal form. 5/965 useless extension candidates. Maximal degree in co-relation 7447. Up to 717 conditions per place. [2024-06-14 12:18:40,707 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 144 selfloop transitions, 81 changer transitions 0/228 dead transitions. [2024-06-14 12:18:40,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 228 transitions, 2848 flow [2024-06-14 12:18:40,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:18:40,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:18:40,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-14 12:18:40,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38235294117647056 [2024-06-14 12:18:40,708 INFO L175 Difference]: Start difference. First operand has 231 places, 211 transitions, 1956 flow. Second operand 10 states and 130 transitions. [2024-06-14 12:18:40,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 228 transitions, 2848 flow [2024-06-14 12:18:40,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 228 transitions, 2701 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-14 12:18:40,940 INFO L231 Difference]: Finished difference. Result has 234 places, 215 transitions, 2052 flow [2024-06-14 12:18:40,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1817, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2052, PETRI_PLACES=234, PETRI_TRANSITIONS=215} [2024-06-14 12:18:40,940 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 201 predicate places. [2024-06-14 12:18:40,940 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 215 transitions, 2052 flow [2024-06-14 12:18:40,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:40,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:40,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:40,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-14 12:18:40,941 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:40,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:40,941 INFO L85 PathProgramCache]: Analyzing trace with hash -2082541126, now seen corresponding path program 15 times [2024-06-14 12:18:40,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:40,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557992898] [2024-06-14 12:18:40,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:40,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:40,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:41,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:41,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:41,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557992898] [2024-06-14 12:18:41,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557992898] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:41,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:41,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:18:41,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054551875] [2024-06-14 12:18:41,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:41,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:18:41,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:41,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:18:41,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:18:41,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:18:41,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 215 transitions, 2052 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:41,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:41,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:18:41,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:42,152 INFO L124 PetriNetUnfolderBase]: 536/974 cut-off events. [2024-06-14 12:18:42,152 INFO L125 PetriNetUnfolderBase]: For 133152/133156 co-relation queries the response was YES. [2024-06-14 12:18:42,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7674 conditions, 974 events. 536/974 cut-off events. For 133152/133156 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4808 event pairs, 81 based on Foata normal form. 2/976 useless extension candidates. Maximal degree in co-relation 7561. Up to 533 conditions per place. [2024-06-14 12:18:42,160 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 143 selfloop transitions, 89 changer transitions 0/235 dead transitions. [2024-06-14 12:18:42,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 235 transitions, 2942 flow [2024-06-14 12:18:42,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:18:42,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:18:42,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 143 transitions. [2024-06-14 12:18:42,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42058823529411765 [2024-06-14 12:18:42,162 INFO L175 Difference]: Start difference. First operand has 234 places, 215 transitions, 2052 flow. Second operand 10 states and 143 transitions. [2024-06-14 12:18:42,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 235 transitions, 2942 flow [2024-06-14 12:18:42,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 235 transitions, 2807 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-14 12:18:42,395 INFO L231 Difference]: Finished difference. Result has 238 places, 217 transitions, 2138 flow [2024-06-14 12:18:42,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1917, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2138, PETRI_PLACES=238, PETRI_TRANSITIONS=217} [2024-06-14 12:18:42,396 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 205 predicate places. [2024-06-14 12:18:42,396 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 217 transitions, 2138 flow [2024-06-14 12:18:42,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:42,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:42,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:42,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-14 12:18:42,396 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:42,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:42,396 INFO L85 PathProgramCache]: Analyzing trace with hash -2082281656, now seen corresponding path program 16 times [2024-06-14 12:18:42,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:42,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25718376] [2024-06-14 12:18:42,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:42,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:42,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:43,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:43,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:43,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25718376] [2024-06-14 12:18:43,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25718376] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:43,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:43,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:18:43,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846806238] [2024-06-14 12:18:43,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:43,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:18:43,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:43,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:18:43,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:18:43,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:18:43,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 217 transitions, 2138 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:43,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:43,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:18:43,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:43,605 INFO L124 PetriNetUnfolderBase]: 532/966 cut-off events. [2024-06-14 12:18:43,606 INFO L125 PetriNetUnfolderBase]: For 129216/129220 co-relation queries the response was YES. [2024-06-14 12:18:43,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7560 conditions, 966 events. 532/966 cut-off events. For 129216/129220 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4771 event pairs, 78 based on Foata normal form. 2/968 useless extension candidates. Maximal degree in co-relation 7446. Up to 530 conditions per place. [2024-06-14 12:18:43,614 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 138 selfloop transitions, 92 changer transitions 0/233 dead transitions. [2024-06-14 12:18:43,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 233 transitions, 2814 flow [2024-06-14 12:18:43,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:18:43,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:18:43,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 139 transitions. [2024-06-14 12:18:43,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4088235294117647 [2024-06-14 12:18:43,615 INFO L175 Difference]: Start difference. First operand has 238 places, 217 transitions, 2138 flow. Second operand 10 states and 139 transitions. [2024-06-14 12:18:43,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 233 transitions, 2814 flow [2024-06-14 12:18:43,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 233 transitions, 2597 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-14 12:18:43,855 INFO L231 Difference]: Finished difference. Result has 241 places, 217 transitions, 2110 flow [2024-06-14 12:18:43,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1921, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2110, PETRI_PLACES=241, PETRI_TRANSITIONS=217} [2024-06-14 12:18:43,856 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 208 predicate places. [2024-06-14 12:18:43,856 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 217 transitions, 2110 flow [2024-06-14 12:18:43,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:43,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:43,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:43,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-14 12:18:43,856 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:43,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:43,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1185205429, now seen corresponding path program 10 times [2024-06-14 12:18:43,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:43,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138949309] [2024-06-14 12:18:43,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:43,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:43,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:44,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:44,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:44,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138949309] [2024-06-14 12:18:44,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138949309] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:44,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:44,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:18:44,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191450626] [2024-06-14 12:18:44,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:44,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:18:44,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:44,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:18:44,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:18:44,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:18:44,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 217 transitions, 2110 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:44,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:44,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:18:44,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:45,081 INFO L124 PetriNetUnfolderBase]: 530/963 cut-off events. [2024-06-14 12:18:45,082 INFO L125 PetriNetUnfolderBase]: For 124386/124390 co-relation queries the response was YES. [2024-06-14 12:18:45,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7451 conditions, 963 events. 530/963 cut-off events. For 124386/124390 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4762 event pairs, 78 based on Foata normal form. 5/968 useless extension candidates. Maximal degree in co-relation 7336. Up to 719 conditions per place. [2024-06-14 12:18:45,090 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 155 selfloop transitions, 71 changer transitions 0/229 dead transitions. [2024-06-14 12:18:45,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 229 transitions, 2766 flow [2024-06-14 12:18:45,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:18:45,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:18:45,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-14 12:18:45,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3911764705882353 [2024-06-14 12:18:45,092 INFO L175 Difference]: Start difference. First operand has 241 places, 217 transitions, 2110 flow. Second operand 10 states and 133 transitions. [2024-06-14 12:18:45,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 229 transitions, 2766 flow [2024-06-14 12:18:45,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 229 transitions, 2546 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-14 12:18:45,312 INFO L231 Difference]: Finished difference. Result has 241 places, 217 transitions, 2037 flow [2024-06-14 12:18:45,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1890, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2037, PETRI_PLACES=241, PETRI_TRANSITIONS=217} [2024-06-14 12:18:45,312 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 208 predicate places. [2024-06-14 12:18:45,312 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 217 transitions, 2037 flow [2024-06-14 12:18:45,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:45,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:45,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:45,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-14 12:18:45,313 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:45,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:45,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1185215070, now seen corresponding path program 3 times [2024-06-14 12:18:45,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:45,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563063951] [2024-06-14 12:18:45,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:45,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:45,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:46,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:46,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:46,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563063951] [2024-06-14 12:18:46,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563063951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:46,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:46,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:18:46,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359201907] [2024-06-14 12:18:46,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:46,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:18:46,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:46,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:18:46,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:18:46,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-06-14 12:18:46,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 217 transitions, 2037 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:46,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:46,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-06-14 12:18:46,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:46,628 INFO L124 PetriNetUnfolderBase]: 504/935 cut-off events. [2024-06-14 12:18:46,629 INFO L125 PetriNetUnfolderBase]: For 128070/128076 co-relation queries the response was YES. [2024-06-14 12:18:46,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7205 conditions, 935 events. 504/935 cut-off events. For 128070/128076 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4731 event pairs, 73 based on Foata normal form. 7/942 useless extension candidates. Maximal degree in co-relation 7089. Up to 733 conditions per place. [2024-06-14 12:18:46,638 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 157 selfloop transitions, 36 changer transitions 0/230 dead transitions. [2024-06-14 12:18:46,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 230 transitions, 2485 flow [2024-06-14 12:18:46,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:18:46,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:18:46,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-14 12:18:46,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3941176470588235 [2024-06-14 12:18:46,639 INFO L175 Difference]: Start difference. First operand has 241 places, 217 transitions, 2037 flow. Second operand 10 states and 134 transitions. [2024-06-14 12:18:46,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 230 transitions, 2485 flow [2024-06-14 12:18:46,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 230 transitions, 2324 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-14 12:18:46,856 INFO L231 Difference]: Finished difference. Result has 241 places, 219 transitions, 1989 flow [2024-06-14 12:18:46,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1876, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1989, PETRI_PLACES=241, PETRI_TRANSITIONS=219} [2024-06-14 12:18:46,856 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 208 predicate places. [2024-06-14 12:18:46,856 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 219 transitions, 1989 flow [2024-06-14 12:18:46,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:46,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:46,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:46,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-14 12:18:46,856 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:46,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:46,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1823666977, now seen corresponding path program 11 times [2024-06-14 12:18:46,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:46,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232194456] [2024-06-14 12:18:46,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:46,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:46,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:47,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:47,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:47,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232194456] [2024-06-14 12:18:47,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232194456] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:47,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:47,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:18:47,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645200031] [2024-06-14 12:18:47,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:47,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:18:47,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:47,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:18:47,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:18:47,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:18:47,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 219 transitions, 1989 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:47,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:47,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:18:47,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:48,160 INFO L124 PetriNetUnfolderBase]: 536/972 cut-off events. [2024-06-14 12:18:48,160 INFO L125 PetriNetUnfolderBase]: For 129505/129505 co-relation queries the response was YES. [2024-06-14 12:18:48,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7427 conditions, 972 events. 536/972 cut-off events. For 129505/129505 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 4793 event pairs, 79 based on Foata normal form. 1/973 useless extension candidates. Maximal degree in co-relation 7310. Up to 899 conditions per place. [2024-06-14 12:18:48,167 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 212 selfloop transitions, 16 changer transitions 0/231 dead transitions. [2024-06-14 12:18:48,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 231 transitions, 2503 flow [2024-06-14 12:18:48,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:18:48,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:18:48,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-14 12:18:48,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34411764705882353 [2024-06-14 12:18:48,168 INFO L175 Difference]: Start difference. First operand has 241 places, 219 transitions, 1989 flow. Second operand 10 states and 117 transitions. [2024-06-14 12:18:48,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 231 transitions, 2503 flow [2024-06-14 12:18:48,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 231 transitions, 2406 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-14 12:18:48,406 INFO L231 Difference]: Finished difference. Result has 243 places, 221 transitions, 1967 flow [2024-06-14 12:18:48,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1892, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1967, PETRI_PLACES=243, PETRI_TRANSITIONS=221} [2024-06-14 12:18:48,407 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 210 predicate places. [2024-06-14 12:18:48,407 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 221 transitions, 1967 flow [2024-06-14 12:18:48,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:48,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:48,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:48,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-14 12:18:48,407 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:48,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:48,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1747075337, now seen corresponding path program 12 times [2024-06-14 12:18:48,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:48,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537106537] [2024-06-14 12:18:48,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:48,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:48,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:49,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:49,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:49,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537106537] [2024-06-14 12:18:49,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537106537] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:49,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:49,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:18:49,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620232448] [2024-06-14 12:18:49,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:49,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:18:49,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:49,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:18:49,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:18:49,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:18:49,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 221 transitions, 1967 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:49,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:49,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:18:49,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:49,591 INFO L124 PetriNetUnfolderBase]: 534/970 cut-off events. [2024-06-14 12:18:49,591 INFO L125 PetriNetUnfolderBase]: For 128387/128391 co-relation queries the response was YES. [2024-06-14 12:18:49,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7295 conditions, 970 events. 534/970 cut-off events. For 128387/128391 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4790 event pairs, 78 based on Foata normal form. 5/975 useless extension candidates. Maximal degree in co-relation 7177. Up to 726 conditions per place. [2024-06-14 12:18:49,601 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 148 selfloop transitions, 82 changer transitions 0/233 dead transitions. [2024-06-14 12:18:49,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 233 transitions, 2637 flow [2024-06-14 12:18:49,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:18:49,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:18:49,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-14 12:18:49,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38235294117647056 [2024-06-14 12:18:49,602 INFO L175 Difference]: Start difference. First operand has 243 places, 221 transitions, 1967 flow. Second operand 10 states and 130 transitions. [2024-06-14 12:18:49,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 233 transitions, 2637 flow [2024-06-14 12:18:49,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 233 transitions, 2566 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-14 12:18:49,856 INFO L231 Difference]: Finished difference. Result has 245 places, 221 transitions, 2065 flow [2024-06-14 12:18:49,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1896, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2065, PETRI_PLACES=245, PETRI_TRANSITIONS=221} [2024-06-14 12:18:49,857 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 212 predicate places. [2024-06-14 12:18:49,857 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 221 transitions, 2065 flow [2024-06-14 12:18:49,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:49,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:49,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:49,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-14 12:18:49,857 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:49,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:49,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1203968548, now seen corresponding path program 4 times [2024-06-14 12:18:49,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:49,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896632305] [2024-06-14 12:18:49,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:49,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:49,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:50,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:50,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:50,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896632305] [2024-06-14 12:18:50,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896632305] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:50,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:50,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:18:50,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381304957] [2024-06-14 12:18:50,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:50,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:18:50,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:50,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:18:50,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:18:50,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-06-14 12:18:50,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 221 transitions, 2065 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:50,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:50,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-06-14 12:18:50,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:51,189 INFO L124 PetriNetUnfolderBase]: 508/942 cut-off events. [2024-06-14 12:18:51,189 INFO L125 PetriNetUnfolderBase]: For 132479/132485 co-relation queries the response was YES. [2024-06-14 12:18:51,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7260 conditions, 942 events. 508/942 cut-off events. For 132479/132485 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4787 event pairs, 73 based on Foata normal form. 7/949 useless extension candidates. Maximal degree in co-relation 7141. Up to 739 conditions per place. [2024-06-14 12:18:51,198 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 157 selfloop transitions, 39 changer transitions 0/234 dead transitions. [2024-06-14 12:18:51,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 234 transitions, 2523 flow [2024-06-14 12:18:51,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:18:51,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:18:51,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-14 12:18:51,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38823529411764707 [2024-06-14 12:18:51,199 INFO L175 Difference]: Start difference. First operand has 245 places, 221 transitions, 2065 flow. Second operand 10 states and 132 transitions. [2024-06-14 12:18:51,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 234 transitions, 2523 flow [2024-06-14 12:18:51,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 234 transitions, 2347 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-14 12:18:51,456 INFO L231 Difference]: Finished difference. Result has 246 places, 223 transitions, 2012 flow [2024-06-14 12:18:51,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1889, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2012, PETRI_PLACES=246, PETRI_TRANSITIONS=223} [2024-06-14 12:18:51,456 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 213 predicate places. [2024-06-14 12:18:51,456 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 223 transitions, 2012 flow [2024-06-14 12:18:51,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:51,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:51,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:51,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-14 12:18:51,457 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:51,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:51,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1747065758, now seen corresponding path program 17 times [2024-06-14 12:18:51,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:51,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430566221] [2024-06-14 12:18:51,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:51,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:51,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:52,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:52,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:52,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430566221] [2024-06-14 12:18:52,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430566221] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:52,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:52,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:18:52,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180395510] [2024-06-14 12:18:52,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:52,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:18:52,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:52,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:18:52,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:18:52,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:18:52,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 223 transitions, 2012 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:52,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:52,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:18:52,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:52,641 INFO L124 PetriNetUnfolderBase]: 543/987 cut-off events. [2024-06-14 12:18:52,641 INFO L125 PetriNetUnfolderBase]: For 138332/138336 co-relation queries the response was YES. [2024-06-14 12:18:52,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7497 conditions, 987 events. 543/987 cut-off events. For 138332/138336 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 4905 event pairs, 60 based on Foata normal form. 2/989 useless extension candidates. Maximal degree in co-relation 7377. Up to 545 conditions per place. [2024-06-14 12:18:52,648 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 123 selfloop transitions, 114 changer transitions 0/240 dead transitions. [2024-06-14 12:18:52,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 240 transitions, 2748 flow [2024-06-14 12:18:52,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:18:52,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:18:52,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-14 12:18:52,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3941176470588235 [2024-06-14 12:18:52,649 INFO L175 Difference]: Start difference. First operand has 246 places, 223 transitions, 2012 flow. Second operand 10 states and 134 transitions. [2024-06-14 12:18:52,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 240 transitions, 2748 flow [2024-06-14 12:18:52,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 240 transitions, 2641 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-14 12:18:52,910 INFO L231 Difference]: Finished difference. Result has 248 places, 225 transitions, 2176 flow [2024-06-14 12:18:52,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1905, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2176, PETRI_PLACES=248, PETRI_TRANSITIONS=225} [2024-06-14 12:18:52,911 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 215 predicate places. [2024-06-14 12:18:52,911 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 225 transitions, 2176 flow [2024-06-14 12:18:52,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:52,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:52,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:52,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-14 12:18:52,911 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:52,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:52,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1433376448, now seen corresponding path program 5 times [2024-06-14 12:18:52,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:52,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73610811] [2024-06-14 12:18:52,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:52,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:52,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:53,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:53,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:53,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73610811] [2024-06-14 12:18:53,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73610811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:53,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:53,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:18:53,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406923823] [2024-06-14 12:18:53,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:53,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:18:53,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:53,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:18:53,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:18:54,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-06-14 12:18:54,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 225 transitions, 2176 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:54,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:54,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-06-14 12:18:54,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:54,235 INFO L124 PetriNetUnfolderBase]: 512/949 cut-off events. [2024-06-14 12:18:54,235 INFO L125 PetriNetUnfolderBase]: For 134058/134064 co-relation queries the response was YES. [2024-06-14 12:18:54,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7399 conditions, 949 events. 512/949 cut-off events. For 134058/134064 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 4826 event pairs, 75 based on Foata normal form. 7/956 useless extension candidates. Maximal degree in co-relation 7278. Up to 746 conditions per place. [2024-06-14 12:18:54,245 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 163 selfloop transitions, 37 changer transitions 0/238 dead transitions. [2024-06-14 12:18:54,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 238 transitions, 2646 flow [2024-06-14 12:18:54,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:18:54,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:18:54,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-14 12:18:54,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3911764705882353 [2024-06-14 12:18:54,246 INFO L175 Difference]: Start difference. First operand has 248 places, 225 transitions, 2176 flow. Second operand 10 states and 133 transitions. [2024-06-14 12:18:54,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 238 transitions, 2646 flow [2024-06-14 12:18:54,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 238 transitions, 2461 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-14 12:18:54,495 INFO L231 Difference]: Finished difference. Result has 251 places, 227 transitions, 2114 flow [2024-06-14 12:18:54,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1991, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2114, PETRI_PLACES=251, PETRI_TRANSITIONS=227} [2024-06-14 12:18:54,495 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 218 predicate places. [2024-06-14 12:18:54,495 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 227 transitions, 2114 flow [2024-06-14 12:18:54,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:54,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:54,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:54,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-14 12:18:54,496 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:54,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:54,496 INFO L85 PathProgramCache]: Analyzing trace with hash 889992488, now seen corresponding path program 18 times [2024-06-14 12:18:54,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:54,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020364222] [2024-06-14 12:18:54,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:54,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:54,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:55,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:55,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:55,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020364222] [2024-06-14 12:18:55,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020364222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:55,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:55,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:18:55,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437172388] [2024-06-14 12:18:55,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:55,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:18:55,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:55,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:18:55,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:18:55,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:18:55,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 227 transitions, 2114 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:55,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:55,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:18:55,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:55,695 INFO L124 PetriNetUnfolderBase]: 547/994 cut-off events. [2024-06-14 12:18:55,695 INFO L125 PetriNetUnfolderBase]: For 139783/139787 co-relation queries the response was YES. [2024-06-14 12:18:55,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7528 conditions, 994 events. 547/994 cut-off events. For 139783/139787 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 4950 event pairs, 70 based on Foata normal form. 2/996 useless extension candidates. Maximal degree in co-relation 7406. Up to 548 conditions per place. [2024-06-14 12:18:55,704 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 138 selfloop transitions, 103 changer transitions 0/244 dead transitions. [2024-06-14 12:18:55,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 244 transitions, 2862 flow [2024-06-14 12:18:55,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:18:55,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:18:55,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-14 12:18:55,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39705882352941174 [2024-06-14 12:18:55,705 INFO L175 Difference]: Start difference. First operand has 251 places, 227 transitions, 2114 flow. Second operand 10 states and 135 transitions. [2024-06-14 12:18:55,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 244 transitions, 2862 flow [2024-06-14 12:18:56,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 244 transitions, 2755 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-14 12:18:56,015 INFO L231 Difference]: Finished difference. Result has 253 places, 229 transitions, 2256 flow [2024-06-14 12:18:56,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2007, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2256, PETRI_PLACES=253, PETRI_TRANSITIONS=229} [2024-06-14 12:18:56,015 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 220 predicate places. [2024-06-14 12:18:56,015 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 229 transitions, 2256 flow [2024-06-14 12:18:56,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:56,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:56,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:56,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-14 12:18:56,016 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:56,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:56,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1433107058, now seen corresponding path program 19 times [2024-06-14 12:18:56,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:56,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614421226] [2024-06-14 12:18:56,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:56,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:56,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:56,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:56,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:56,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614421226] [2024-06-14 12:18:56,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614421226] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:56,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:56,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:18:56,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821846760] [2024-06-14 12:18:56,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:56,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:18:56,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:56,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:18:56,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:18:56,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:18:56,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 229 transitions, 2256 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:56,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:56,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:18:56,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:57,226 INFO L124 PetriNetUnfolderBase]: 553/1006 cut-off events. [2024-06-14 12:18:57,227 INFO L125 PetriNetUnfolderBase]: For 143457/143461 co-relation queries the response was YES. [2024-06-14 12:18:57,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7784 conditions, 1006 events. 553/1006 cut-off events. For 143457/143461 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5032 event pairs, 70 based on Foata normal form. 2/1008 useless extension candidates. Maximal degree in co-relation 7661. Up to 554 conditions per place. [2024-06-14 12:18:57,235 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 141 selfloop transitions, 103 changer transitions 0/247 dead transitions. [2024-06-14 12:18:57,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 247 transitions, 3020 flow [2024-06-14 12:18:57,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:18:57,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:18:57,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-14 12:18:57,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40294117647058825 [2024-06-14 12:18:57,237 INFO L175 Difference]: Start difference. First operand has 253 places, 229 transitions, 2256 flow. Second operand 10 states and 137 transitions. [2024-06-14 12:18:57,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 247 transitions, 3020 flow [2024-06-14 12:18:57,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 247 transitions, 2717 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-14 12:18:57,529 INFO L231 Difference]: Finished difference. Result has 253 places, 231 transitions, 2206 flow [2024-06-14 12:18:57,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1961, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2206, PETRI_PLACES=253, PETRI_TRANSITIONS=231} [2024-06-14 12:18:57,530 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 220 predicate places. [2024-06-14 12:18:57,530 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 231 transitions, 2206 flow [2024-06-14 12:18:57,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:57,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:57,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:57,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-14 12:18:57,532 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:57,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:57,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1433107337, now seen corresponding path program 13 times [2024-06-14 12:18:57,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:57,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592708639] [2024-06-14 12:18:57,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:57,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:57,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:58,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:58,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:58,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592708639] [2024-06-14 12:18:58,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592708639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:58,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:58,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:18:58,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100339526] [2024-06-14 12:18:58,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:58,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:18:58,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:58,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:18:58,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:18:58,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:18:58,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 231 transitions, 2206 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:58,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:58,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:18:58,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:58,727 INFO L124 PetriNetUnfolderBase]: 556/1011 cut-off events. [2024-06-14 12:18:58,727 INFO L125 PetriNetUnfolderBase]: For 141303/141307 co-relation queries the response was YES. [2024-06-14 12:18:58,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7798 conditions, 1011 events. 556/1011 cut-off events. For 141303/141307 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5095 event pairs, 80 based on Foata normal form. 5/1016 useless extension candidates. Maximal degree in co-relation 7674. Up to 762 conditions per place. [2024-06-14 12:18:58,737 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 162 selfloop transitions, 80 changer transitions 0/245 dead transitions. [2024-06-14 12:18:58,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 245 transitions, 2946 flow [2024-06-14 12:18:58,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:18:58,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:18:58,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-14 12:18:58,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38235294117647056 [2024-06-14 12:18:58,738 INFO L175 Difference]: Start difference. First operand has 253 places, 231 transitions, 2206 flow. Second operand 10 states and 130 transitions. [2024-06-14 12:18:58,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 245 transitions, 2946 flow [2024-06-14 12:18:58,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 245 transitions, 2731 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-14 12:18:58,996 INFO L231 Difference]: Finished difference. Result has 256 places, 233 transitions, 2190 flow [2024-06-14 12:18:58,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1991, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2190, PETRI_PLACES=256, PETRI_TRANSITIONS=233} [2024-06-14 12:18:58,997 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 223 predicate places. [2024-06-14 12:18:58,997 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 233 transitions, 2190 flow [2024-06-14 12:18:58,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:58,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:58,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:58,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-14 12:18:58,997 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:58,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:58,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1433376107, now seen corresponding path program 14 times [2024-06-14 12:18:58,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:58,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315088280] [2024-06-14 12:18:58,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:58,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:59,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:59,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:59,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:59,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315088280] [2024-06-14 12:18:59,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315088280] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:59,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:59,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:18:59,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612766365] [2024-06-14 12:18:59,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:59,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:18:59,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:59,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:18:59,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:18:59,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:18:59,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 233 transitions, 2190 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:59,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:59,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:18:59,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:00,169 INFO L124 PetriNetUnfolderBase]: 559/1016 cut-off events. [2024-06-14 12:19:00,169 INFO L125 PetriNetUnfolderBase]: For 144184/144188 co-relation queries the response was YES. [2024-06-14 12:19:00,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7755 conditions, 1016 events. 559/1016 cut-off events. For 144184/144188 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5102 event pairs, 80 based on Foata normal form. 5/1021 useless extension candidates. Maximal degree in co-relation 7630. Up to 766 conditions per place. [2024-06-14 12:19:00,178 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 164 selfloop transitions, 80 changer transitions 0/247 dead transitions. [2024-06-14 12:19:00,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 247 transitions, 2940 flow [2024-06-14 12:19:00,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:19:00,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:19:00,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-14 12:19:00,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38529411764705884 [2024-06-14 12:19:00,179 INFO L175 Difference]: Start difference. First operand has 256 places, 233 transitions, 2190 flow. Second operand 10 states and 131 transitions. [2024-06-14 12:19:00,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 247 transitions, 2940 flow [2024-06-14 12:19:00,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 247 transitions, 2714 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-14 12:19:00,452 INFO L231 Difference]: Finished difference. Result has 257 places, 235 transitions, 2167 flow [2024-06-14 12:19:00,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1970, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2167, PETRI_PLACES=257, PETRI_TRANSITIONS=235} [2024-06-14 12:19:00,453 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 224 predicate places. [2024-06-14 12:19:00,453 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 235 transitions, 2167 flow [2024-06-14 12:19:00,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:00,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:00,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:00,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-14 12:19:00,453 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:19:00,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:00,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1433366528, now seen corresponding path program 20 times [2024-06-14 12:19:00,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:00,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988616233] [2024-06-14 12:19:00,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:00,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:00,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:01,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:01,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:01,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988616233] [2024-06-14 12:19:01,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988616233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:01,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:01,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:19:01,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490253155] [2024-06-14 12:19:01,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:01,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:19:01,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:01,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:19:01,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:19:01,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:19:01,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 235 transitions, 2167 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:01,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:01,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:19:01,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:01,689 INFO L124 PetriNetUnfolderBase]: 555/1010 cut-off events. [2024-06-14 12:19:01,689 INFO L125 PetriNetUnfolderBase]: For 142224/142228 co-relation queries the response was YES. [2024-06-14 12:19:01,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7526 conditions, 1010 events. 555/1010 cut-off events. For 142224/142228 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5079 event pairs, 69 based on Foata normal form. 2/1012 useless extension candidates. Maximal degree in co-relation 7400. Up to 561 conditions per place. [2024-06-14 12:19:01,698 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 145 selfloop transitions, 102 changer transitions 0/250 dead transitions. [2024-06-14 12:19:01,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 250 transitions, 2705 flow [2024-06-14 12:19:01,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:19:01,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:19:01,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-14 12:19:01,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40294117647058825 [2024-06-14 12:19:01,699 INFO L175 Difference]: Start difference. First operand has 257 places, 235 transitions, 2167 flow. Second operand 10 states and 137 transitions. [2024-06-14 12:19:01,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 250 transitions, 2705 flow [2024-06-14 12:19:02,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 250 transitions, 2460 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-14 12:19:02,029 INFO L231 Difference]: Finished difference. Result has 259 places, 235 transitions, 2131 flow [2024-06-14 12:19:02,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1922, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2131, PETRI_PLACES=259, PETRI_TRANSITIONS=235} [2024-06-14 12:19:02,030 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 226 predicate places. [2024-06-14 12:19:02,030 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 235 transitions, 2131 flow [2024-06-14 12:19:02,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:02,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:02,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:02,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-14 12:19:02,030 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:19:02,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:02,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1433366807, now seen corresponding path program 15 times [2024-06-14 12:19:02,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:02,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192358473] [2024-06-14 12:19:02,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:02,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:02,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:02,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:02,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:02,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192358473] [2024-06-14 12:19:02,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192358473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:02,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:02,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:19:02,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126483204] [2024-06-14 12:19:02,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:02,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:19:02,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:02,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:19:02,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:19:02,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:19:02,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 235 transitions, 2131 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:02,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:02,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:19:02,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:03,254 INFO L124 PetriNetUnfolderBase]: 553/1007 cut-off events. [2024-06-14 12:19:03,254 INFO L125 PetriNetUnfolderBase]: For 135375/135379 co-relation queries the response was YES. [2024-06-14 12:19:03,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7471 conditions, 1007 events. 553/1007 cut-off events. For 135375/135379 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5044 event pairs, 79 based on Foata normal form. 5/1012 useless extension candidates. Maximal degree in co-relation 7344. Up to 758 conditions per place. [2024-06-14 12:19:03,265 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 164 selfloop transitions, 79 changer transitions 0/246 dead transitions. [2024-06-14 12:19:03,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 246 transitions, 2647 flow [2024-06-14 12:19:03,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:19:03,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:19:03,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-14 12:19:03,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38529411764705884 [2024-06-14 12:19:03,266 INFO L175 Difference]: Start difference. First operand has 259 places, 235 transitions, 2131 flow. Second operand 10 states and 131 transitions. [2024-06-14 12:19:03,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 246 transitions, 2647 flow [2024-06-14 12:19:03,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 246 transitions, 2330 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-14 12:19:03,530 INFO L231 Difference]: Finished difference. Result has 258 places, 235 transitions, 1977 flow [2024-06-14 12:19:03,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1814, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1977, PETRI_PLACES=258, PETRI_TRANSITIONS=235} [2024-06-14 12:19:03,530 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 225 predicate places. [2024-06-14 12:19:03,530 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 235 transitions, 1977 flow [2024-06-14 12:19:03,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:03,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:03,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:03,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-14 12:19:03,530 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:19:03,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:03,531 INFO L85 PathProgramCache]: Analyzing trace with hash 75194990, now seen corresponding path program 1 times [2024-06-14 12:19:03,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:03,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484289109] [2024-06-14 12:19:03,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:03,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:03,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:04,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:04,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:04,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484289109] [2024-06-14 12:19:04,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484289109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:04,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:04,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:19:04,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416985124] [2024-06-14 12:19:04,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:04,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:19:04,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:04,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:19:04,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:19:04,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-06-14 12:19:04,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 235 transitions, 1977 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:04,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:04,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-06-14 12:19:04,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:04,954 INFO L124 PetriNetUnfolderBase]: 501/945 cut-off events. [2024-06-14 12:19:04,955 INFO L125 PetriNetUnfolderBase]: For 143191/143193 co-relation queries the response was YES. [2024-06-14 12:19:04,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7126 conditions, 945 events. 501/945 cut-off events. For 143191/143193 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 4889 event pairs, 29 based on Foata normal form. 4/937 useless extension candidates. Maximal degree in co-relation 6998. Up to 744 conditions per place. [2024-06-14 12:19:04,962 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 211 selfloop transitions, 23 changer transitions 0/259 dead transitions. [2024-06-14 12:19:04,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 259 transitions, 2537 flow [2024-06-14 12:19:04,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:19:04,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:19:04,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-14 12:19:04,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40294117647058825 [2024-06-14 12:19:04,965 INFO L175 Difference]: Start difference. First operand has 258 places, 235 transitions, 1977 flow. Second operand 10 states and 137 transitions. [2024-06-14 12:19:04,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 259 transitions, 2537 flow [2024-06-14 12:19:05,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 259 transitions, 2353 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-14 12:19:05,303 INFO L231 Difference]: Finished difference. Result has 258 places, 236 transitions, 1869 flow [2024-06-14 12:19:05,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1793, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1869, PETRI_PLACES=258, PETRI_TRANSITIONS=236} [2024-06-14 12:19:05,304 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 225 predicate places. [2024-06-14 12:19:05,304 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 236 transitions, 1869 flow [2024-06-14 12:19:05,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:05,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:05,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:05,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-14 12:19:05,305 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:19:05,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:05,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1383852790, now seen corresponding path program 2 times [2024-06-14 12:19:05,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:05,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720737649] [2024-06-14 12:19:05,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:05,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:05,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:06,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:06,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:06,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720737649] [2024-06-14 12:19:06,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720737649] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:06,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:06,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:19:06,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306476128] [2024-06-14 12:19:06,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:06,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:19:06,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:06,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:19:06,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:19:06,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-06-14 12:19:06,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 236 transitions, 1869 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:06,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:06,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-06-14 12:19:06,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:06,658 INFO L124 PetriNetUnfolderBase]: 512/967 cut-off events. [2024-06-14 12:19:06,658 INFO L125 PetriNetUnfolderBase]: For 146330/146330 co-relation queries the response was YES. [2024-06-14 12:19:06,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7169 conditions, 967 events. 512/967 cut-off events. For 146330/146330 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5061 event pairs, 54 based on Foata normal form. 2/957 useless extension candidates. Maximal degree in co-relation 7040. Up to 779 conditions per place. [2024-06-14 12:19:06,667 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 212 selfloop transitions, 25 changer transitions 0/262 dead transitions. [2024-06-14 12:19:06,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 262 transitions, 2507 flow [2024-06-14 12:19:06,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:19:06,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:19:06,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 139 transitions. [2024-06-14 12:19:06,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4088235294117647 [2024-06-14 12:19:06,668 INFO L175 Difference]: Start difference. First operand has 258 places, 236 transitions, 1869 flow. Second operand 10 states and 139 transitions. [2024-06-14 12:19:06,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 262 transitions, 2507 flow [2024-06-14 12:19:07,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 262 transitions, 2425 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-14 12:19:07,038 INFO L231 Difference]: Finished difference. Result has 266 places, 247 transitions, 2000 flow [2024-06-14 12:19:07,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1803, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2000, PETRI_PLACES=266, PETRI_TRANSITIONS=247} [2024-06-14 12:19:07,039 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 233 predicate places. [2024-06-14 12:19:07,039 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 247 transitions, 2000 flow [2024-06-14 12:19:07,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:07,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:07,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:07,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-14 12:19:07,040 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:19:07,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:07,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1573335060, now seen corresponding path program 3 times [2024-06-14 12:19:07,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:07,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275176082] [2024-06-14 12:19:07,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:07,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:07,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:07,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:07,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:07,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275176082] [2024-06-14 12:19:07,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275176082] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:07,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:07,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:19:07,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396280272] [2024-06-14 12:19:07,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:07,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:19:07,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:07,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:19:07,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:19:08,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-06-14 12:19:08,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 247 transitions, 2000 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:08,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:08,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-06-14 12:19:08,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:08,432 INFO L124 PetriNetUnfolderBase]: 526/992 cut-off events. [2024-06-14 12:19:08,432 INFO L125 PetriNetUnfolderBase]: For 151504/151506 co-relation queries the response was YES. [2024-06-14 12:19:08,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7338 conditions, 992 events. 526/992 cut-off events. For 151504/151506 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5215 event pairs, 98 based on Foata normal form. 4/984 useless extension candidates. Maximal degree in co-relation 7201. Up to 802 conditions per place. [2024-06-14 12:19:08,442 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 216 selfloop transitions, 34 changer transitions 0/275 dead transitions. [2024-06-14 12:19:08,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 275 transitions, 2640 flow [2024-06-14 12:19:08,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:19:08,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:19:08,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 150 transitions. [2024-06-14 12:19:08,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40106951871657753 [2024-06-14 12:19:08,443 INFO L175 Difference]: Start difference. First operand has 266 places, 247 transitions, 2000 flow. Second operand 11 states and 150 transitions. [2024-06-14 12:19:08,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 275 transitions, 2640 flow [2024-06-14 12:19:08,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 275 transitions, 2594 flow, removed 14 selfloop flow, removed 1 redundant places. [2024-06-14 12:19:08,886 INFO L231 Difference]: Finished difference. Result has 278 places, 253 transitions, 2115 flow [2024-06-14 12:19:08,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1956, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2115, PETRI_PLACES=278, PETRI_TRANSITIONS=253} [2024-06-14 12:19:08,886 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 245 predicate places. [2024-06-14 12:19:08,886 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 253 transitions, 2115 flow [2024-06-14 12:19:08,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:08,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:08,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:08,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-14 12:19:08,887 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:19:08,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:08,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1123895802, now seen corresponding path program 4 times [2024-06-14 12:19:08,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:08,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585207745] [2024-06-14 12:19:08,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:08,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:08,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:09,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:09,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:09,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585207745] [2024-06-14 12:19:09,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585207745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:09,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:09,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:19:09,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789524491] [2024-06-14 12:19:09,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:09,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:19:09,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:09,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:19:09,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:19:09,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-06-14 12:19:09,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 253 transitions, 2115 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:09,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:09,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-06-14 12:19:09,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:10,382 INFO L124 PetriNetUnfolderBase]: 542/1029 cut-off events. [2024-06-14 12:19:10,382 INFO L125 PetriNetUnfolderBase]: For 152634/152634 co-relation queries the response was YES. [2024-06-14 12:19:10,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7627 conditions, 1029 events. 542/1029 cut-off events. For 152634/152634 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5490 event pairs, 92 based on Foata normal form. 2/1019 useless extension candidates. Maximal degree in co-relation 7485. Up to 822 conditions per place. [2024-06-14 12:19:10,396 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 222 selfloop transitions, 35 changer transitions 0/282 dead transitions. [2024-06-14 12:19:10,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 282 transitions, 2820 flow [2024-06-14 12:19:10,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:19:10,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:19:10,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 150 transitions. [2024-06-14 12:19:10,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40106951871657753 [2024-06-14 12:19:10,397 INFO L175 Difference]: Start difference. First operand has 278 places, 253 transitions, 2115 flow. Second operand 11 states and 150 transitions. [2024-06-14 12:19:10,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 282 transitions, 2820 flow [2024-06-14 12:19:10,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 282 transitions, 2713 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-14 12:19:10,988 INFO L231 Difference]: Finished difference. Result has 286 places, 264 transitions, 2266 flow [2024-06-14 12:19:10,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2022, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2266, PETRI_PLACES=286, PETRI_TRANSITIONS=264} [2024-06-14 12:19:10,988 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 253 predicate places. [2024-06-14 12:19:10,988 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 264 transitions, 2266 flow [2024-06-14 12:19:10,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:10,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:10,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:10,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-14 12:19:10,989 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:19:10,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:10,990 INFO L85 PathProgramCache]: Analyzing trace with hash 2080321430, now seen corresponding path program 5 times [2024-06-14 12:19:10,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:10,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136710864] [2024-06-14 12:19:10,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:10,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:11,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:12,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:12,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:12,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136710864] [2024-06-14 12:19:12,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136710864] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:12,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:12,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:19:12,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624726285] [2024-06-14 12:19:12,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:12,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:19:12,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:12,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:19:12,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:19:12,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-06-14 12:19:12,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 264 transitions, 2266 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:12,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:12,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-06-14 12:19:12,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:12,421 INFO L124 PetriNetUnfolderBase]: 550/1044 cut-off events. [2024-06-14 12:19:12,421 INFO L125 PetriNetUnfolderBase]: For 158364/158364 co-relation queries the response was YES. [2024-06-14 12:19:12,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7767 conditions, 1044 events. 550/1044 cut-off events. For 158364/158364 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5593 event pairs, 91 based on Foata normal form. 2/1034 useless extension candidates. Maximal degree in co-relation 7620. Up to 836 conditions per place. [2024-06-14 12:19:12,433 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 225 selfloop transitions, 37 changer transitions 0/287 dead transitions. [2024-06-14 12:19:12,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 287 transitions, 2908 flow [2024-06-14 12:19:12,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:19:12,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:19:12,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 142 transitions. [2024-06-14 12:19:12,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4176470588235294 [2024-06-14 12:19:12,433 INFO L175 Difference]: Start difference. First operand has 286 places, 264 transitions, 2266 flow. Second operand 10 states and 142 transitions. [2024-06-14 12:19:12,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 287 transitions, 2908 flow [2024-06-14 12:19:12,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 287 transitions, 2832 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-14 12:19:12,918 INFO L231 Difference]: Finished difference. Result has 294 places, 268 transitions, 2363 flow [2024-06-14 12:19:12,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2190, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2363, PETRI_PLACES=294, PETRI_TRANSITIONS=268} [2024-06-14 12:19:12,918 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 261 predicate places. [2024-06-14 12:19:12,918 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 268 transitions, 2363 flow [2024-06-14 12:19:12,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:12,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:12,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:12,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-14 12:19:12,919 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:19:12,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:12,919 INFO L85 PathProgramCache]: Analyzing trace with hash -238948356, now seen corresponding path program 1 times [2024-06-14 12:19:12,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:12,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133442201] [2024-06-14 12:19:12,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:12,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:12,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:13,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:13,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:13,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133442201] [2024-06-14 12:19:13,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133442201] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:13,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:13,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:19:13,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007268383] [2024-06-14 12:19:13,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:13,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:19:13,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:13,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:19:13,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:19:13,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:19:13,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 268 transitions, 2363 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:13,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:13,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:19:13,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:14,344 INFO L124 PetriNetUnfolderBase]: 611/1121 cut-off events. [2024-06-14 12:19:14,344 INFO L125 PetriNetUnfolderBase]: For 155820/155820 co-relation queries the response was YES. [2024-06-14 12:19:14,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8103 conditions, 1121 events. 611/1121 cut-off events. For 155820/155820 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5877 event pairs, 122 based on Foata normal form. 1/1122 useless extension candidates. Maximal degree in co-relation 7954. Up to 969 conditions per place. [2024-06-14 12:19:14,355 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 245 selfloop transitions, 44 changer transitions 0/292 dead transitions. [2024-06-14 12:19:14,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 292 transitions, 3039 flow [2024-06-14 12:19:14,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:19:14,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:19:14,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-14 12:19:14,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36764705882352944 [2024-06-14 12:19:14,356 INFO L175 Difference]: Start difference. First operand has 294 places, 268 transitions, 2363 flow. Second operand 12 states and 150 transitions. [2024-06-14 12:19:14,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 292 transitions, 3039 flow [2024-06-14 12:19:14,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 292 transitions, 2948 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-14 12:19:14,812 INFO L231 Difference]: Finished difference. Result has 302 places, 272 transitions, 2422 flow [2024-06-14 12:19:14,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2272, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2422, PETRI_PLACES=302, PETRI_TRANSITIONS=272} [2024-06-14 12:19:14,813 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 269 predicate places. [2024-06-14 12:19:14,813 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 272 transitions, 2422 flow [2024-06-14 12:19:14,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:14,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:14,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:14,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-14 12:19:14,813 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:19:14,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:14,813 INFO L85 PathProgramCache]: Analyzing trace with hash -976890640, now seen corresponding path program 6 times [2024-06-14 12:19:14,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:14,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522155257] [2024-06-14 12:19:14,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:14,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:14,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:15,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:15,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:15,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522155257] [2024-06-14 12:19:15,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522155257] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:15,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:15,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:19:15,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189562686] [2024-06-14 12:19:15,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:15,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:19:15,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:15,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:19:15,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:19:15,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-06-14 12:19:15,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 272 transitions, 2422 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:15,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:15,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-06-14 12:19:15,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:16,229 INFO L124 PetriNetUnfolderBase]: 565/1069 cut-off events. [2024-06-14 12:19:16,230 INFO L125 PetriNetUnfolderBase]: For 164539/164539 co-relation queries the response was YES. [2024-06-14 12:19:16,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7987 conditions, 1069 events. 565/1069 cut-off events. For 164539/164539 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5758 event pairs, 95 based on Foata normal form. 2/1056 useless extension candidates. Maximal degree in co-relation 7836. Up to 884 conditions per place. [2024-06-14 12:19:16,241 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 237 selfloop transitions, 32 changer transitions 0/295 dead transitions. [2024-06-14 12:19:16,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 295 transitions, 3068 flow [2024-06-14 12:19:16,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:19:16,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:19:16,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-14 12:19:16,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.393048128342246 [2024-06-14 12:19:16,242 INFO L175 Difference]: Start difference. First operand has 302 places, 272 transitions, 2422 flow. Second operand 11 states and 147 transitions. [2024-06-14 12:19:16,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 295 transitions, 3068 flow [2024-06-14 12:19:16,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 295 transitions, 2952 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-14 12:19:16,732 INFO L231 Difference]: Finished difference. Result has 306 places, 277 transitions, 2450 flow [2024-06-14 12:19:16,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2306, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2450, PETRI_PLACES=306, PETRI_TRANSITIONS=277} [2024-06-14 12:19:16,733 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 273 predicate places. [2024-06-14 12:19:16,733 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 277 transitions, 2450 flow [2024-06-14 12:19:16,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:16,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:16,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:16,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-14 12:19:16,734 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:19:16,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:16,734 INFO L85 PathProgramCache]: Analyzing trace with hash -786820274, now seen corresponding path program 2 times [2024-06-14 12:19:16,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:16,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230159710] [2024-06-14 12:19:16,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:16,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:16,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:17,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:17,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:17,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230159710] [2024-06-14 12:19:17,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230159710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:17,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:17,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:19:17,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937785060] [2024-06-14 12:19:17,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:17,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:19:17,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:17,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:19:17,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:19:17,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:19:17,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 277 transitions, 2450 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:17,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:17,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:19:17,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:18,255 INFO L124 PetriNetUnfolderBase]: 627/1151 cut-off events. [2024-06-14 12:19:18,255 INFO L125 PetriNetUnfolderBase]: For 162070/162070 co-relation queries the response was YES. [2024-06-14 12:19:18,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8393 conditions, 1151 events. 627/1151 cut-off events. For 162070/162070 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6073 event pairs, 124 based on Foata normal form. 1/1152 useless extension candidates. Maximal degree in co-relation 8239. Up to 997 conditions per place. [2024-06-14 12:19:18,268 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 256 selfloop transitions, 41 changer transitions 0/300 dead transitions. [2024-06-14 12:19:18,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 300 transitions, 3148 flow [2024-06-14 12:19:18,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:19:18,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:19:18,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-14 12:19:18,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36764705882352944 [2024-06-14 12:19:18,269 INFO L175 Difference]: Start difference. First operand has 306 places, 277 transitions, 2450 flow. Second operand 12 states and 150 transitions. [2024-06-14 12:19:18,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 300 transitions, 3148 flow [2024-06-14 12:19:18,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 300 transitions, 3066 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-14 12:19:18,801 INFO L231 Difference]: Finished difference. Result has 313 places, 281 transitions, 2520 flow [2024-06-14 12:19:18,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2368, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2520, PETRI_PLACES=313, PETRI_TRANSITIONS=281} [2024-06-14 12:19:18,802 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 280 predicate places. [2024-06-14 12:19:18,802 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 281 transitions, 2520 flow [2024-06-14 12:19:18,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:18,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:18,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:18,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-14 12:19:18,803 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:19:18,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:18,803 INFO L85 PathProgramCache]: Analyzing trace with hash -976705942, now seen corresponding path program 1 times [2024-06-14 12:19:18,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:18,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371899821] [2024-06-14 12:19:18,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:18,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:18,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:19,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:19,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:19,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371899821] [2024-06-14 12:19:19,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371899821] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:19,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:19,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:19:19,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710507638] [2024-06-14 12:19:19,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:19,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:19:19,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:19,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:19:19,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:19:19,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:19:19,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 281 transitions, 2520 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:19,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:19,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:19:19,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:20,067 INFO L124 PetriNetUnfolderBase]: 645/1179 cut-off events. [2024-06-14 12:19:20,067 INFO L125 PetriNetUnfolderBase]: For 170690/170690 co-relation queries the response was YES. [2024-06-14 12:19:20,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8596 conditions, 1179 events. 645/1179 cut-off events. For 170690/170690 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6245 event pairs, 133 based on Foata normal form. 2/1181 useless extension candidates. Maximal degree in co-relation 8439. Up to 1032 conditions per place. [2024-06-14 12:19:20,082 INFO L140 encePairwiseOnDemand]: 20/34 looper letters, 269 selfloop transitions, 36 changer transitions 0/308 dead transitions. [2024-06-14 12:19:20,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 308 transitions, 3257 flow [2024-06-14 12:19:20,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:19:20,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:19:20,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-14 12:19:20,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3700980392156863 [2024-06-14 12:19:20,083 INFO L175 Difference]: Start difference. First operand has 313 places, 281 transitions, 2520 flow. Second operand 12 states and 151 transitions. [2024-06-14 12:19:20,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 308 transitions, 3257 flow [2024-06-14 12:19:20,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 308 transitions, 3139 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-14 12:19:20,678 INFO L231 Difference]: Finished difference. Result has 318 places, 287 transitions, 2561 flow [2024-06-14 12:19:20,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2402, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2561, PETRI_PLACES=318, PETRI_TRANSITIONS=287} [2024-06-14 12:19:20,679 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 285 predicate places. [2024-06-14 12:19:20,679 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 287 transitions, 2561 flow [2024-06-14 12:19:20,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:20,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:20,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:20,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-14 12:19:20,679 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:19:20,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:20,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1267452028, now seen corresponding path program 7 times [2024-06-14 12:19:20,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:20,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725702008] [2024-06-14 12:19:20,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:20,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:20,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:21,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:21,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:21,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725702008] [2024-06-14 12:19:21,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725702008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:21,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:21,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:19:21,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250125687] [2024-06-14 12:19:21,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:21,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:19:21,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:21,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:19:21,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:19:21,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-06-14 12:19:21,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 287 transitions, 2561 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:21,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:21,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-06-14 12:19:21,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:22,128 INFO L124 PetriNetUnfolderBase]: 594/1124 cut-off events. [2024-06-14 12:19:22,129 INFO L125 PetriNetUnfolderBase]: For 174192/174192 co-relation queries the response was YES. [2024-06-14 12:19:22,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8477 conditions, 1124 events. 594/1124 cut-off events. For 174192/174192 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6168 event pairs, 101 based on Foata normal form. 2/1111 useless extension candidates. Maximal degree in co-relation 8317. Up to 931 conditions per place. [2024-06-14 12:19:22,142 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 251 selfloop transitions, 30 changer transitions 0/309 dead transitions. [2024-06-14 12:19:22,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 309 transitions, 3239 flow [2024-06-14 12:19:22,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:19:22,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:19:22,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-14 12:19:22,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.393048128342246 [2024-06-14 12:19:22,143 INFO L175 Difference]: Start difference. First operand has 318 places, 287 transitions, 2561 flow. Second operand 11 states and 147 transitions. [2024-06-14 12:19:22,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 309 transitions, 3239 flow [2024-06-14 12:19:22,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 309 transitions, 3141 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-14 12:19:22,710 INFO L231 Difference]: Finished difference. Result has 323 places, 292 transitions, 2613 flow [2024-06-14 12:19:22,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2463, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2613, PETRI_PLACES=323, PETRI_TRANSITIONS=292} [2024-06-14 12:19:22,711 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 290 predicate places. [2024-06-14 12:19:22,711 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 292 transitions, 2613 flow [2024-06-14 12:19:22,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:22,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:22,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:22,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-14 12:19:22,711 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:19:22,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:22,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1457522394, now seen corresponding path program 3 times [2024-06-14 12:19:22,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:22,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050951206] [2024-06-14 12:19:22,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:22,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:22,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:23,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:23,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:23,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050951206] [2024-06-14 12:19:23,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050951206] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:23,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:23,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:19:23,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338690063] [2024-06-14 12:19:23,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:23,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:19:23,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:23,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:19:23,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:19:23,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:19:23,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 292 transitions, 2613 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:23,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:23,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:19:23,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:24,212 INFO L124 PetriNetUnfolderBase]: 661/1210 cut-off events. [2024-06-14 12:19:24,213 INFO L125 PetriNetUnfolderBase]: For 171804/171804 co-relation queries the response was YES. [2024-06-14 12:19:24,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8944 conditions, 1210 events. 661/1210 cut-off events. For 171804/171804 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 6451 event pairs, 137 based on Foata normal form. 1/1211 useless extension candidates. Maximal degree in co-relation 8781. Up to 1071 conditions per place. [2024-06-14 12:19:24,226 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 277 selfloop transitions, 34 changer transitions 0/314 dead transitions. [2024-06-14 12:19:24,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 314 transitions, 3347 flow [2024-06-14 12:19:24,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:19:24,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:19:24,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-14 12:19:24,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36519607843137253 [2024-06-14 12:19:24,227 INFO L175 Difference]: Start difference. First operand has 323 places, 292 transitions, 2613 flow. Second operand 12 states and 149 transitions. [2024-06-14 12:19:24,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 314 transitions, 3347 flow [2024-06-14 12:19:24,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 314 transitions, 3271 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-14 12:19:24,806 INFO L231 Difference]: Finished difference. Result has 331 places, 296 transitions, 2685 flow [2024-06-14 12:19:24,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2537, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2685, PETRI_PLACES=331, PETRI_TRANSITIONS=296} [2024-06-14 12:19:24,806 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 298 predicate places. [2024-06-14 12:19:24,806 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 296 transitions, 2685 flow [2024-06-14 12:19:24,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:24,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:24,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:24,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-14 12:19:24,807 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:19:24,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:24,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1267636726, now seen corresponding path program 2 times [2024-06-14 12:19:24,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:24,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481688573] [2024-06-14 12:19:24,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:24,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:24,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:25,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:25,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:25,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481688573] [2024-06-14 12:19:25,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481688573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:25,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:25,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:19:25,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929090323] [2024-06-14 12:19:25,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:25,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:19:25,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:25,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:19:25,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:19:25,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:19:25,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 296 transitions, 2685 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:25,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:25,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:19:25,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:26,127 INFO L124 PetriNetUnfolderBase]: 679/1241 cut-off events. [2024-06-14 12:19:26,127 INFO L125 PetriNetUnfolderBase]: For 180600/180600 co-relation queries the response was YES. [2024-06-14 12:19:26,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9162 conditions, 1241 events. 679/1241 cut-off events. For 180600/180600 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 6697 event pairs, 138 based on Foata normal form. 2/1243 useless extension candidates. Maximal degree in co-relation 8996. Up to 1090 conditions per place. [2024-06-14 12:19:26,142 INFO L140 encePairwiseOnDemand]: 20/34 looper letters, 285 selfloop transitions, 34 changer transitions 0/322 dead transitions. [2024-06-14 12:19:26,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 322 transitions, 3468 flow [2024-06-14 12:19:26,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:19:26,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:19:26,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-14 12:19:26,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3700980392156863 [2024-06-14 12:19:26,143 INFO L175 Difference]: Start difference. First operand has 331 places, 296 transitions, 2685 flow. Second operand 12 states and 151 transitions. [2024-06-14 12:19:26,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 322 transitions, 3468 flow [2024-06-14 12:19:26,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 322 transitions, 3354 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-14 12:19:26,728 INFO L231 Difference]: Finished difference. Result has 336 places, 302 transitions, 2740 flow [2024-06-14 12:19:26,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2571, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2740, PETRI_PLACES=336, PETRI_TRANSITIONS=302} [2024-06-14 12:19:26,729 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 303 predicate places. [2024-06-14 12:19:26,729 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 302 transitions, 2740 flow [2024-06-14 12:19:26,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:26,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:26,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:26,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-14 12:19:26,729 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:19:26,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:26,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1719419066, now seen corresponding path program 8 times [2024-06-14 12:19:26,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:26,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6208562] [2024-06-14 12:19:26,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:26,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:26,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:27,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:27,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:27,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6208562] [2024-06-14 12:19:27,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6208562] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:27,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:27,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:19:27,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494100018] [2024-06-14 12:19:27,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:27,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:19:27,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:27,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:19:27,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:19:27,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-06-14 12:19:27,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 302 transitions, 2740 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:27,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:27,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-06-14 12:19:27,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:28,137 INFO L124 PetriNetUnfolderBase]: 626/1179 cut-off events. [2024-06-14 12:19:28,138 INFO L125 PetriNetUnfolderBase]: For 184707/184711 co-relation queries the response was YES. [2024-06-14 12:19:28,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8976 conditions, 1179 events. 626/1179 cut-off events. For 184707/184711 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 6551 event pairs, 95 based on Foata normal form. 2/1156 useless extension candidates. Maximal degree in co-relation 8807. Up to 968 conditions per place. [2024-06-14 12:19:28,152 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 258 selfloop transitions, 37 changer transitions 0/325 dead transitions. [2024-06-14 12:19:28,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 325 transitions, 3449 flow [2024-06-14 12:19:28,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:19:28,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:19:28,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-14 12:19:28,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39572192513368987 [2024-06-14 12:19:28,153 INFO L175 Difference]: Start difference. First operand has 336 places, 302 transitions, 2740 flow. Second operand 11 states and 148 transitions. [2024-06-14 12:19:28,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 325 transitions, 3449 flow [2024-06-14 12:19:28,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 325 transitions, 3341 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-14 12:19:28,715 INFO L231 Difference]: Finished difference. Result has 342 places, 309 transitions, 2818 flow [2024-06-14 12:19:28,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2632, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2818, PETRI_PLACES=342, PETRI_TRANSITIONS=309} [2024-06-14 12:19:28,716 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 309 predicate places. [2024-06-14 12:19:28,716 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 309 transitions, 2818 flow [2024-06-14 12:19:28,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:28,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:28,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:28,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-14 12:19:28,716 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:19:28,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:28,717 INFO L85 PathProgramCache]: Analyzing trace with hash 2126906564, now seen corresponding path program 3 times [2024-06-14 12:19:28,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:28,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64844449] [2024-06-14 12:19:28,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:28,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:28,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:29,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:29,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:29,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64844449] [2024-06-14 12:19:29,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64844449] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:29,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:29,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:19:29,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977167077] [2024-06-14 12:19:29,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:29,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:19:29,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:29,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:19:29,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:19:29,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:19:29,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 309 transitions, 2818 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:29,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:29,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:19:29,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:30,086 INFO L124 PetriNetUnfolderBase]: 747/1365 cut-off events. [2024-06-14 12:19:30,086 INFO L125 PetriNetUnfolderBase]: For 201066/201066 co-relation queries the response was YES. [2024-06-14 12:19:30,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10216 conditions, 1365 events. 747/1365 cut-off events. For 201066/201066 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 7576 event pairs, 122 based on Foata normal form. 2/1367 useless extension candidates. Maximal degree in co-relation 10043. Up to 1095 conditions per place. [2024-06-14 12:19:30,102 INFO L140 encePairwiseOnDemand]: 20/34 looper letters, 295 selfloop transitions, 53 changer transitions 0/351 dead transitions. [2024-06-14 12:19:30,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 351 transitions, 4029 flow [2024-06-14 12:19:30,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:19:30,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:19:30,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 159 transitions. [2024-06-14 12:19:30,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3897058823529412 [2024-06-14 12:19:30,103 INFO L175 Difference]: Start difference. First operand has 342 places, 309 transitions, 2818 flow. Second operand 12 states and 159 transitions. [2024-06-14 12:19:30,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 351 transitions, 4029 flow [2024-06-14 12:19:30,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 351 transitions, 3955 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-14 12:19:30,772 INFO L231 Difference]: Finished difference. Result has 353 places, 324 transitions, 3084 flow [2024-06-14 12:19:30,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2744, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3084, PETRI_PLACES=353, PETRI_TRANSITIONS=324} [2024-06-14 12:19:30,772 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 320 predicate places. [2024-06-14 12:19:30,772 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 324 transitions, 3084 flow [2024-06-14 12:19:30,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:30,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:30,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:30,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-14 12:19:30,773 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:19:30,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:30,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1966702402, now seen corresponding path program 1 times [2024-06-14 12:19:30,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:30,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417795226] [2024-06-14 12:19:30,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:30,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:30,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:31,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:31,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:31,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417795226] [2024-06-14 12:19:31,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417795226] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:31,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:31,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:19:31,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059671637] [2024-06-14 12:19:31,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:31,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:19:31,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:31,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:19:31,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:19:31,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:19:31,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 324 transitions, 3084 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:31,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:31,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:19:31,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:32,339 INFO L124 PetriNetUnfolderBase]: 750/1372 cut-off events. [2024-06-14 12:19:32,339 INFO L125 PetriNetUnfolderBase]: For 198669/198669 co-relation queries the response was YES. [2024-06-14 12:19:32,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10451 conditions, 1372 events. 750/1372 cut-off events. For 198669/198669 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 7636 event pairs, 158 based on Foata normal form. 1/1373 useless extension candidates. Maximal degree in co-relation 10272. Up to 1245 conditions per place. [2024-06-14 12:19:32,356 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 313 selfloop transitions, 28 changer transitions 0/344 dead transitions. [2024-06-14 12:19:32,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 344 transitions, 3858 flow [2024-06-14 12:19:32,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:19:32,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:19:32,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-14 12:19:32,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35294117647058826 [2024-06-14 12:19:32,357 INFO L175 Difference]: Start difference. First operand has 353 places, 324 transitions, 3084 flow. Second operand 12 states and 144 transitions. [2024-06-14 12:19:32,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 344 transitions, 3858 flow [2024-06-14 12:19:33,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 344 transitions, 3776 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-14 12:19:33,013 INFO L231 Difference]: Finished difference. Result has 362 places, 328 transitions, 3129 flow [2024-06-14 12:19:33,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3002, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3129, PETRI_PLACES=362, PETRI_TRANSITIONS=328} [2024-06-14 12:19:33,013 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 329 predicate places. [2024-06-14 12:19:33,013 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 328 transitions, 3129 flow [2024-06-14 12:19:33,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:33,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:33,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:33,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-14 12:19:33,013 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:19:33,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:33,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1974776972, now seen corresponding path program 4 times [2024-06-14 12:19:33,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:33,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538168932] [2024-06-14 12:19:33,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:33,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:33,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:33,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:33,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:33,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538168932] [2024-06-14 12:19:33,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538168932] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:33,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:33,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:19:33,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297138253] [2024-06-14 12:19:33,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:33,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:19:33,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:33,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:19:33,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:19:33,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:19:33,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 328 transitions, 3129 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:33,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:33,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:19:33,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:34,305 INFO L124 PetriNetUnfolderBase]: 756/1380 cut-off events. [2024-06-14 12:19:34,305 INFO L125 PetriNetUnfolderBase]: For 207488/207488 co-relation queries the response was YES. [2024-06-14 12:19:34,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10585 conditions, 1380 events. 756/1380 cut-off events. For 207488/207488 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 7683 event pairs, 123 based on Foata normal form. 2/1382 useless extension candidates. Maximal degree in co-relation 10402. Up to 1106 conditions per place. [2024-06-14 12:19:34,322 INFO L140 encePairwiseOnDemand]: 20/34 looper letters, 292 selfloop transitions, 59 changer transitions 0/354 dead transitions. [2024-06-14 12:19:34,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 354 transitions, 4210 flow [2024-06-14 12:19:34,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:19:34,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:19:34,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 158 transitions. [2024-06-14 12:19:34,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3872549019607843 [2024-06-14 12:19:34,323 INFO L175 Difference]: Start difference. First operand has 362 places, 328 transitions, 3129 flow. Second operand 12 states and 158 transitions. [2024-06-14 12:19:34,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 354 transitions, 4210 flow [2024-06-14 12:19:35,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 354 transitions, 4074 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-06-14 12:19:35,025 INFO L231 Difference]: Finished difference. Result has 366 places, 332 transitions, 3195 flow [2024-06-14 12:19:35,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2993, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3195, PETRI_PLACES=366, PETRI_TRANSITIONS=332} [2024-06-14 12:19:35,025 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 333 predicate places. [2024-06-14 12:19:35,025 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 332 transitions, 3195 flow [2024-06-14 12:19:35,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:35,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:35,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:35,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-14 12:19:35,025 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:19:35,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:35,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1637455440, now seen corresponding path program 5 times [2024-06-14 12:19:35,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:35,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399353965] [2024-06-14 12:19:35,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:35,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:35,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:35,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:35,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:35,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399353965] [2024-06-14 12:19:35,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399353965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:35,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:35,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:19:35,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822836378] [2024-06-14 12:19:35,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:35,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:19:35,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:35,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:19:35,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:19:36,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:19:36,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 332 transitions, 3195 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:36,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:36,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:19:36,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:36,427 INFO L124 PetriNetUnfolderBase]: 762/1390 cut-off events. [2024-06-14 12:19:36,428 INFO L125 PetriNetUnfolderBase]: For 212240/212240 co-relation queries the response was YES. [2024-06-14 12:19:36,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10756 conditions, 1390 events. 762/1390 cut-off events. For 212240/212240 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 7728 event pairs, 113 based on Foata normal form. 2/1392 useless extension candidates. Maximal degree in co-relation 10572. Up to 1112 conditions per place. [2024-06-14 12:19:36,446 INFO L140 encePairwiseOnDemand]: 20/34 looper letters, 289 selfloop transitions, 64 changer transitions 0/356 dead transitions. [2024-06-14 12:19:36,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 356 transitions, 4276 flow [2024-06-14 12:19:36,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:19:36,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:19:36,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 157 transitions. [2024-06-14 12:19:36,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38480392156862747 [2024-06-14 12:19:36,447 INFO L175 Difference]: Start difference. First operand has 366 places, 332 transitions, 3195 flow. Second operand 12 states and 157 transitions. [2024-06-14 12:19:36,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 356 transitions, 4276 flow [2024-06-14 12:19:37,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 356 transitions, 4112 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-14 12:19:37,239 INFO L231 Difference]: Finished difference. Result has 370 places, 335 transitions, 3235 flow [2024-06-14 12:19:37,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3035, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3235, PETRI_PLACES=370, PETRI_TRANSITIONS=335} [2024-06-14 12:19:37,240 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 337 predicate places. [2024-06-14 12:19:37,240 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 335 transitions, 3235 flow [2024-06-14 12:19:37,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:37,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:37,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:37,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-14 12:19:37,240 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:19:37,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:37,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1637447070, now seen corresponding path program 6 times [2024-06-14 12:19:37,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:37,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363222995] [2024-06-14 12:19:37,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:37,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:37,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:38,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:38,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:38,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363222995] [2024-06-14 12:19:38,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363222995] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:38,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:38,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:19:38,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605692059] [2024-06-14 12:19:38,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:38,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:19:38,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:38,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:19:38,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:19:38,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:19:38,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 335 transitions, 3235 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:38,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:38,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:19:38,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:38,691 INFO L124 PetriNetUnfolderBase]: 758/1386 cut-off events. [2024-06-14 12:19:38,691 INFO L125 PetriNetUnfolderBase]: For 202184/202184 co-relation queries the response was YES. [2024-06-14 12:19:38,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10492 conditions, 1386 events. 758/1386 cut-off events. For 202184/202184 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 7742 event pairs, 112 based on Foata normal form. 2/1388 useless extension candidates. Maximal degree in co-relation 10306. Up to 1109 conditions per place. [2024-06-14 12:19:38,705 INFO L140 encePairwiseOnDemand]: 20/34 looper letters, 284 selfloop transitions, 68 changer transitions 0/355 dead transitions. [2024-06-14 12:19:38,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 355 transitions, 4019 flow [2024-06-14 12:19:38,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:19:38,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:19:38,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 155 transitions. [2024-06-14 12:19:38,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3799019607843137 [2024-06-14 12:19:38,706 INFO L175 Difference]: Start difference. First operand has 370 places, 335 transitions, 3235 flow. Second operand 12 states and 155 transitions. [2024-06-14 12:19:38,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 355 transitions, 4019 flow [2024-06-14 12:19:39,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 355 transitions, 3834 flow, removed 41 selfloop flow, removed 8 redundant places. [2024-06-14 12:19:39,354 INFO L231 Difference]: Finished difference. Result has 374 places, 335 transitions, 3191 flow [2024-06-14 12:19:39,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3050, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3191, PETRI_PLACES=374, PETRI_TRANSITIONS=335} [2024-06-14 12:19:39,354 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 341 predicate places. [2024-06-14 12:19:39,354 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 335 transitions, 3191 flow [2024-06-14 12:19:39,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:39,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:39,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:39,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-14 12:19:39,354 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:19:39,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:39,355 INFO L85 PathProgramCache]: Analyzing trace with hash -2039783478, now seen corresponding path program 9 times [2024-06-14 12:19:39,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:39,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093807400] [2024-06-14 12:19:39,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:39,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:39,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:40,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:40,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:40,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093807400] [2024-06-14 12:19:40,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093807400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:40,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:40,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:19:40,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989100220] [2024-06-14 12:19:40,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:40,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:19:40,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:40,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:19:40,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:19:40,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-06-14 12:19:40,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 335 transitions, 3191 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:40,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:40,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-06-14 12:19:40,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:40,828 INFO L124 PetriNetUnfolderBase]: 687/1307 cut-off events. [2024-06-14 12:19:40,828 INFO L125 PetriNetUnfolderBase]: For 205867/205879 co-relation queries the response was YES. [2024-06-14 12:19:40,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10105 conditions, 1307 events. 687/1307 cut-off events. For 205867/205879 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 7567 event pairs, 58 based on Foata normal form. 10/1297 useless extension candidates. Maximal degree in co-relation 9918. Up to 1059 conditions per place. [2024-06-14 12:19:40,845 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 285 selfloop transitions, 35 changer transitions 0/353 dead transitions. [2024-06-14 12:19:40,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 353 transitions, 3917 flow [2024-06-14 12:19:40,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:19:40,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:19:40,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 150 transitions. [2024-06-14 12:19:40,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40106951871657753 [2024-06-14 12:19:40,846 INFO L175 Difference]: Start difference. First operand has 374 places, 335 transitions, 3191 flow. Second operand 11 states and 150 transitions. [2024-06-14 12:19:40,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 353 transitions, 3917 flow [2024-06-14 12:19:41,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 353 transitions, 3798 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-14 12:19:41,592 INFO L231 Difference]: Finished difference. Result has 376 places, 336 transitions, 3188 flow [2024-06-14 12:19:41,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3072, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3188, PETRI_PLACES=376, PETRI_TRANSITIONS=336} [2024-06-14 12:19:41,592 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 343 predicate places. [2024-06-14 12:19:41,592 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 336 transitions, 3188 flow [2024-06-14 12:19:41,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:41,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:41,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:41,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-14 12:19:41,592 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:19:41,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:41,592 INFO L85 PathProgramCache]: Analyzing trace with hash -2035314828, now seen corresponding path program 10 times [2024-06-14 12:19:41,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:41,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117809535] [2024-06-14 12:19:41,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:41,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:41,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:42,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:42,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:42,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117809535] [2024-06-14 12:19:42,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117809535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:42,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:42,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:19:42,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208044481] [2024-06-14 12:19:42,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:42,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:19:42,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:42,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:19:42,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:19:42,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-06-14 12:19:42,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 336 transitions, 3188 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:42,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:42,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-06-14 12:19:42,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:43,072 INFO L124 PetriNetUnfolderBase]: 693/1315 cut-off events. [2024-06-14 12:19:43,072 INFO L125 PetriNetUnfolderBase]: For 211062/211072 co-relation queries the response was YES. [2024-06-14 12:19:43,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10156 conditions, 1315 events. 693/1315 cut-off events. For 211062/211072 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 7570 event pairs, 50 based on Foata normal form. 6/1301 useless extension candidates. Maximal degree in co-relation 9968. Up to 1094 conditions per place. [2024-06-14 12:19:43,089 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 293 selfloop transitions, 29 changer transitions 0/355 dead transitions. [2024-06-14 12:19:43,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 355 transitions, 3934 flow [2024-06-14 12:19:43,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:19:43,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:19:43,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-14 12:19:43,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.393048128342246 [2024-06-14 12:19:43,090 INFO L175 Difference]: Start difference. First operand has 376 places, 336 transitions, 3188 flow. Second operand 11 states and 147 transitions. [2024-06-14 12:19:43,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 355 transitions, 3934 flow [2024-06-14 12:19:43,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 355 transitions, 3803 flow, removed 27 selfloop flow, removed 11 redundant places. [2024-06-14 12:19:43,799 INFO L231 Difference]: Finished difference. Result has 377 places, 339 transitions, 3186 flow [2024-06-14 12:19:43,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3057, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3186, PETRI_PLACES=377, PETRI_TRANSITIONS=339} [2024-06-14 12:19:43,799 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 344 predicate places. [2024-06-14 12:19:43,799 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 339 transitions, 3186 flow [2024-06-14 12:19:43,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:43,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:43,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:43,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-14 12:19:43,799 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:19:43,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:43,800 INFO L85 PathProgramCache]: Analyzing trace with hash 2144366258, now seen corresponding path program 4 times [2024-06-14 12:19:43,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:43,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578987823] [2024-06-14 12:19:43,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:43,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:43,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:44,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:44,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:44,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578987823] [2024-06-14 12:19:44,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578987823] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:44,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:44,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:19:44,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977781836] [2024-06-14 12:19:44,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:44,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:19:44,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:44,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:19:44,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:19:44,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:19:44,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 339 transitions, 3186 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:44,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:44,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:19:44,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:45,286 INFO L124 PetriNetUnfolderBase]: 772/1412 cut-off events. [2024-06-14 12:19:45,287 INFO L125 PetriNetUnfolderBase]: For 206477/206477 co-relation queries the response was YES. [2024-06-14 12:19:45,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10733 conditions, 1412 events. 772/1412 cut-off events. For 206477/206477 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 7911 event pairs, 83 based on Foata normal form. 1/1413 useless extension candidates. Maximal degree in co-relation 10547. Up to 1255 conditions per place. [2024-06-14 12:19:45,304 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 323 selfloop transitions, 34 changer transitions 0/360 dead transitions. [2024-06-14 12:19:45,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 360 transitions, 4022 flow [2024-06-14 12:19:45,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:19:45,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:19:45,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-14 12:19:45,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36519607843137253 [2024-06-14 12:19:45,305 INFO L175 Difference]: Start difference. First operand has 377 places, 339 transitions, 3186 flow. Second operand 12 states and 149 transitions. [2024-06-14 12:19:45,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 360 transitions, 4022 flow [2024-06-14 12:19:46,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 360 transitions, 3920 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-14 12:19:46,023 INFO L231 Difference]: Finished difference. Result has 382 places, 343 transitions, 3244 flow [2024-06-14 12:19:46,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3084, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3244, PETRI_PLACES=382, PETRI_TRANSITIONS=343} [2024-06-14 12:19:46,023 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 349 predicate places. [2024-06-14 12:19:46,023 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 343 transitions, 3244 flow [2024-06-14 12:19:46,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:46,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:46,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:46,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-14 12:19:46,023 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:19:46,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:46,024 INFO L85 PathProgramCache]: Analyzing trace with hash -2035130130, now seen corresponding path program 7 times [2024-06-14 12:19:46,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:46,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506280187] [2024-06-14 12:19:46,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:46,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:46,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:46,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:46,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:46,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506280187] [2024-06-14 12:19:46,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506280187] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:46,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:46,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:19:46,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052789679] [2024-06-14 12:19:46,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:46,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:19:46,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:46,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:19:46,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:19:46,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:19:46,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 343 transitions, 3244 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:46,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:46,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:19:46,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:47,452 INFO L124 PetriNetUnfolderBase]: 790/1442 cut-off events. [2024-06-14 12:19:47,453 INFO L125 PetriNetUnfolderBase]: For 216726/216726 co-relation queries the response was YES. [2024-06-14 12:19:47,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10936 conditions, 1442 events. 790/1442 cut-off events. For 216726/216726 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 8099 event pairs, 83 based on Foata normal form. 2/1444 useless extension candidates. Maximal degree in co-relation 10748. Up to 1279 conditions per place. [2024-06-14 12:19:47,469 INFO L140 encePairwiseOnDemand]: 20/34 looper letters, 332 selfloop transitions, 33 changer transitions 0/368 dead transitions. [2024-06-14 12:19:47,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 368 transitions, 4147 flow [2024-06-14 12:19:47,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:19:47,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:19:47,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-14 12:19:47,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3700980392156863 [2024-06-14 12:19:47,470 INFO L175 Difference]: Start difference. First operand has 382 places, 343 transitions, 3244 flow. Second operand 12 states and 151 transitions. [2024-06-14 12:19:47,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 368 transitions, 4147 flow [2024-06-14 12:19:48,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 368 transitions, 4021 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-14 12:19:48,192 INFO L231 Difference]: Finished difference. Result has 387 places, 349 transitions, 3303 flow [2024-06-14 12:19:48,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3118, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3303, PETRI_PLACES=387, PETRI_TRANSITIONS=349} [2024-06-14 12:19:48,193 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 354 predicate places. [2024-06-14 12:19:48,193 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 349 transitions, 3303 flow [2024-06-14 12:19:48,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:48,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:48,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:48,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-14 12:19:48,193 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:19:48,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:48,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1869675694, now seen corresponding path program 11 times [2024-06-14 12:19:48,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:48,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819480276] [2024-06-14 12:19:48,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:48,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:48,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:49,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:49,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:49,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819480276] [2024-06-14 12:19:49,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819480276] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:49,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:49,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:19:49,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278331227] [2024-06-14 12:19:49,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:49,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:19:49,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:49,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:19:49,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:19:49,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-06-14 12:19:49,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 349 transitions, 3303 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:49,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:49,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-06-14 12:19:49,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:49,813 INFO L124 PetriNetUnfolderBase]: 723/1373 cut-off events. [2024-06-14 12:19:49,813 INFO L125 PetriNetUnfolderBase]: For 220960/220966 co-relation queries the response was YES. [2024-06-14 12:19:49,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10649 conditions, 1373 events. 723/1373 cut-off events. For 220960/220966 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 8041 event pairs, 54 based on Foata normal form. 6/1359 useless extension candidates. Maximal degree in co-relation 10458. Up to 1133 conditions per place. [2024-06-14 12:19:49,831 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 303 selfloop transitions, 33 changer transitions 0/371 dead transitions. [2024-06-14 12:19:49,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 371 transitions, 4112 flow [2024-06-14 12:19:49,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:19:49,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:19:49,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 149 transitions. [2024-06-14 12:19:49,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3983957219251337 [2024-06-14 12:19:49,832 INFO L175 Difference]: Start difference. First operand has 387 places, 349 transitions, 3303 flow. Second operand 11 states and 149 transitions. [2024-06-14 12:19:49,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 371 transitions, 4112 flow [2024-06-14 12:19:50,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 371 transitions, 3988 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-06-14 12:19:50,546 INFO L231 Difference]: Finished difference. Result has 393 places, 356 transitions, 3373 flow [2024-06-14 12:19:50,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3179, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3373, PETRI_PLACES=393, PETRI_TRANSITIONS=356} [2024-06-14 12:19:50,547 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 360 predicate places. [2024-06-14 12:19:50,547 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 356 transitions, 3373 flow [2024-06-14 12:19:50,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:50,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:50,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:50,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-14 12:19:50,547 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:19:50,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:50,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1312843274, now seen corresponding path program 8 times [2024-06-14 12:19:50,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:50,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738393819] [2024-06-14 12:19:50,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:50,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:50,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:51,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:51,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:51,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738393819] [2024-06-14 12:19:51,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738393819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:51,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:51,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:19:51,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857993667] [2024-06-14 12:19:51,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:51,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:19:51,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:51,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:19:51,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:19:51,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:19:51,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 356 transitions, 3373 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:51,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:51,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:19:51,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:51,984 INFO L124 PetriNetUnfolderBase]: 858/1566 cut-off events. [2024-06-14 12:19:51,984 INFO L125 PetriNetUnfolderBase]: For 240859/240859 co-relation queries the response was YES. [2024-06-14 12:19:52,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12113 conditions, 1566 events. 858/1566 cut-off events. For 240859/240859 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 9026 event pairs, 88 based on Foata normal form. 2/1568 useless extension candidates. Maximal degree in co-relation 11918. Up to 1314 conditions per place. [2024-06-14 12:19:52,005 INFO L140 encePairwiseOnDemand]: 20/34 looper letters, 347 selfloop transitions, 47 changer transitions 0/397 dead transitions. [2024-06-14 12:19:52,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 397 transitions, 4766 flow [2024-06-14 12:19:52,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:19:52,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:19:52,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 160 transitions. [2024-06-14 12:19:52,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39215686274509803 [2024-06-14 12:19:52,006 INFO L175 Difference]: Start difference. First operand has 393 places, 356 transitions, 3373 flow. Second operand 12 states and 160 transitions. [2024-06-14 12:19:52,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 397 transitions, 4766 flow [2024-06-14 12:19:52,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 397 transitions, 4674 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-06-14 12:19:52,815 INFO L231 Difference]: Finished difference. Result has 404 places, 371 transitions, 3645 flow [2024-06-14 12:19:52,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3281, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3645, PETRI_PLACES=404, PETRI_TRANSITIONS=371} [2024-06-14 12:19:52,815 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 371 predicate places. [2024-06-14 12:19:52,815 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 371 transitions, 3645 flow [2024-06-14 12:19:52,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:52,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:52,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:52,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-14 12:19:52,815 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:19:52,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:52,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1863234886, now seen corresponding path program 9 times [2024-06-14 12:19:52,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:52,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039497779] [2024-06-14 12:19:52,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:52,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:52,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:53,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:53,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:53,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039497779] [2024-06-14 12:19:53,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039497779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:53,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:53,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:19:53,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580450593] [2024-06-14 12:19:53,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:53,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:19:53,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:53,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:19:53,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:19:53,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:19:53,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 371 transitions, 3645 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:53,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:53,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:19:53,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:54,263 INFO L124 PetriNetUnfolderBase]: 864/1574 cut-off events. [2024-06-14 12:19:54,263 INFO L125 PetriNetUnfolderBase]: For 244992/244992 co-relation queries the response was YES. [2024-06-14 12:19:54,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12370 conditions, 1574 events. 864/1574 cut-off events. For 244992/244992 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 9070 event pairs, 84 based on Foata normal form. 2/1576 useless extension candidates. Maximal degree in co-relation 12169. Up to 1320 conditions per place. [2024-06-14 12:19:54,284 INFO L140 encePairwiseOnDemand]: 20/34 looper letters, 344 selfloop transitions, 51 changer transitions 0/398 dead transitions. [2024-06-14 12:19:54,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 398 transitions, 4886 flow [2024-06-14 12:19:54,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:19:54,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:19:54,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 159 transitions. [2024-06-14 12:19:54,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3897058823529412 [2024-06-14 12:19:54,285 INFO L175 Difference]: Start difference. First operand has 404 places, 371 transitions, 3645 flow. Second operand 12 states and 159 transitions. [2024-06-14 12:19:54,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 398 transitions, 4886 flow [2024-06-14 12:19:55,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 398 transitions, 4762 flow, removed 47 selfloop flow, removed 5 redundant places. [2024-06-14 12:19:55,121 INFO L231 Difference]: Finished difference. Result has 413 places, 375 transitions, 3725 flow [2024-06-14 12:19:55,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3529, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3725, PETRI_PLACES=413, PETRI_TRANSITIONS=375} [2024-06-14 12:19:55,121 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 380 predicate places. [2024-06-14 12:19:55,121 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 375 transitions, 3725 flow [2024-06-14 12:19:55,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:55,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:55,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:55,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-14 12:19:55,121 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:19:55,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:55,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1862995876, now seen corresponding path program 10 times [2024-06-14 12:19:55,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:55,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109845909] [2024-06-14 12:19:55,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:55,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:55,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:55,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:55,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:55,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109845909] [2024-06-14 12:19:55,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109845909] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:55,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:55,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:19:55,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518673430] [2024-06-14 12:19:55,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:55,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:19:55,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:55,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:19:55,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:19:56,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:19:56,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 375 transitions, 3725 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:56,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:56,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:19:56,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:56,551 INFO L124 PetriNetUnfolderBase]: 870/1586 cut-off events. [2024-06-14 12:19:56,551 INFO L125 PetriNetUnfolderBase]: For 248857/248857 co-relation queries the response was YES. [2024-06-14 12:19:56,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12529 conditions, 1586 events. 870/1586 cut-off events. For 248857/248857 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 9164 event pairs, 83 based on Foata normal form. 2/1588 useless extension candidates. Maximal degree in co-relation 12324. Up to 1326 conditions per place. [2024-06-14 12:19:56,573 INFO L140 encePairwiseOnDemand]: 20/34 looper letters, 339 selfloop transitions, 58 changer transitions 0/400 dead transitions. [2024-06-14 12:19:56,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 400 transitions, 4954 flow [2024-06-14 12:19:56,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:19:56,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:19:56,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 157 transitions. [2024-06-14 12:19:56,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38480392156862747 [2024-06-14 12:19:56,574 INFO L175 Difference]: Start difference. First operand has 413 places, 375 transitions, 3725 flow. Second operand 12 states and 157 transitions. [2024-06-14 12:19:56,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 400 transitions, 4954 flow [2024-06-14 12:19:57,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 400 transitions, 4813 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-14 12:19:57,530 INFO L231 Difference]: Finished difference. Result has 419 places, 380 transitions, 3827 flow [2024-06-14 12:19:57,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3588, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3827, PETRI_PLACES=419, PETRI_TRANSITIONS=380} [2024-06-14 12:19:57,530 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 386 predicate places. [2024-06-14 12:19:57,530 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 380 transitions, 3827 flow [2024-06-14 12:19:57,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:57,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:57,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:57,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-14 12:19:57,531 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:19:57,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:57,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1862995566, now seen corresponding path program 2 times [2024-06-14 12:19:57,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:57,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740810323] [2024-06-14 12:19:57,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:57,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:57,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:58,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:58,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:58,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740810323] [2024-06-14 12:19:58,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740810323] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:58,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:58,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:19:58,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851814039] [2024-06-14 12:19:58,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:58,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:19:58,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:58,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:19:58,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:19:58,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:19:58,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 380 transitions, 3827 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:58,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:58,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:19:58,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:59,156 INFO L124 PetriNetUnfolderBase]: 873/1593 cut-off events. [2024-06-14 12:19:59,156 INFO L125 PetriNetUnfolderBase]: For 244703/244703 co-relation queries the response was YES. [2024-06-14 12:19:59,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12638 conditions, 1593 events. 873/1593 cut-off events. For 244703/244703 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 9207 event pairs, 138 based on Foata normal form. 1/1594 useless extension candidates. Maximal degree in co-relation 12430. Up to 1454 conditions per place. [2024-06-14 12:19:59,179 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 367 selfloop transitions, 27 changer transitions 0/397 dead transitions. [2024-06-14 12:19:59,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 397 transitions, 4693 flow [2024-06-14 12:19:59,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:19:59,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:19:59,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-14 12:19:59,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35294117647058826 [2024-06-14 12:19:59,180 INFO L175 Difference]: Start difference. First operand has 419 places, 380 transitions, 3827 flow. Second operand 12 states and 144 transitions. [2024-06-14 12:19:59,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 397 transitions, 4693 flow [2024-06-14 12:20:00,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 397 transitions, 4562 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-14 12:20:00,038 INFO L231 Difference]: Finished difference. Result has 424 places, 382 transitions, 3799 flow [2024-06-14 12:20:00,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3696, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3799, PETRI_PLACES=424, PETRI_TRANSITIONS=382} [2024-06-14 12:20:00,039 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 391 predicate places. [2024-06-14 12:20:00,039 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 382 transitions, 3799 flow [2024-06-14 12:20:00,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:00,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:00,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:00,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-14 12:20:00,039 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:20:00,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:00,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1863004246, now seen corresponding path program 11 times [2024-06-14 12:20:00,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:00,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113634421] [2024-06-14 12:20:00,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:00,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:00,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:00,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:00,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:00,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113634421] [2024-06-14 12:20:00,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113634421] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:00,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:00,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:20:00,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480965746] [2024-06-14 12:20:00,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:00,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:20:00,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:00,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:20:00,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:20:01,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:20:01,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 382 transitions, 3799 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:01,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:01,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:20:01,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:01,565 INFO L124 PetriNetUnfolderBase]: 869/1585 cut-off events. [2024-06-14 12:20:01,565 INFO L125 PetriNetUnfolderBase]: For 239554/239554 co-relation queries the response was YES. [2024-06-14 12:20:01,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12269 conditions, 1585 events. 869/1585 cut-off events. For 239554/239554 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 9172 event pairs, 83 based on Foata normal form. 2/1587 useless extension candidates. Maximal degree in co-relation 12060. Up to 1328 conditions per place. [2024-06-14 12:20:01,588 INFO L140 encePairwiseOnDemand]: 20/34 looper letters, 343 selfloop transitions, 55 changer transitions 0/401 dead transitions. [2024-06-14 12:20:01,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 401 transitions, 4689 flow [2024-06-14 12:20:01,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:20:01,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:20:01,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 157 transitions. [2024-06-14 12:20:01,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38480392156862747 [2024-06-14 12:20:01,590 INFO L175 Difference]: Start difference. First operand has 424 places, 382 transitions, 3799 flow. Second operand 12 states and 157 transitions. [2024-06-14 12:20:01,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 401 transitions, 4689 flow [2024-06-14 12:20:02,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 401 transitions, 4533 flow, removed 41 selfloop flow, removed 9 redundant places. [2024-06-14 12:20:02,613 INFO L231 Difference]: Finished difference. Result has 427 places, 382 transitions, 3758 flow [2024-06-14 12:20:02,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3643, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3758, PETRI_PLACES=427, PETRI_TRANSITIONS=382} [2024-06-14 12:20:02,613 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 394 predicate places. [2024-06-14 12:20:02,613 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 382 transitions, 3758 flow [2024-06-14 12:20:02,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:02,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:02,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:02,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-14 12:20:02,614 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:20:02,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:02,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1948796922, now seen corresponding path program 12 times [2024-06-14 12:20:02,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:02,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021113874] [2024-06-14 12:20:02,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:02,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:02,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:03,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:03,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:03,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021113874] [2024-06-14 12:20:03,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021113874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:03,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:03,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:20:03,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057497501] [2024-06-14 12:20:03,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:03,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:20:03,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:03,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:20:03,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:20:03,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-06-14 12:20:03,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 382 transitions, 3758 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:03,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:03,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-06-14 12:20:03,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:04,061 INFO L124 PetriNetUnfolderBase]: 796/1512 cut-off events. [2024-06-14 12:20:04,061 INFO L125 PetriNetUnfolderBase]: For 243912/243928 co-relation queries the response was YES. [2024-06-14 12:20:04,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11856 conditions, 1512 events. 796/1512 cut-off events. For 243912/243928 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 9078 event pairs, 64 based on Foata normal form. 10/1498 useless extension candidates. Maximal degree in co-relation 11647. Up to 1219 conditions per place. [2024-06-14 12:20:04,092 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 319 selfloop transitions, 48 changer transitions 0/405 dead transitions. [2024-06-14 12:20:04,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 405 transitions, 4634 flow [2024-06-14 12:20:04,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:20:04,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:20:04,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-14 12:20:04,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39572192513368987 [2024-06-14 12:20:04,093 INFO L175 Difference]: Start difference. First operand has 427 places, 382 transitions, 3758 flow. Second operand 11 states and 148 transitions. [2024-06-14 12:20:04,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 405 transitions, 4634 flow [2024-06-14 12:20:04,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 405 transitions, 4518 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-14 12:20:04,964 INFO L231 Difference]: Finished difference. Result has 432 places, 391 transitions, 3900 flow [2024-06-14 12:20:04,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3642, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3900, PETRI_PLACES=432, PETRI_TRANSITIONS=391} [2024-06-14 12:20:04,965 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 399 predicate places. [2024-06-14 12:20:04,965 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 391 transitions, 3900 flow [2024-06-14 12:20:04,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:04,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:04,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:04,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-14 12:20:04,965 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:20:04,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:04,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1072532634, now seen corresponding path program 3 times [2024-06-14 12:20:04,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:04,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986026563] [2024-06-14 12:20:04,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:04,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:04,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:06,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:06,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:06,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986026563] [2024-06-14 12:20:06,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986026563] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:06,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:06,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:20:06,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915613426] [2024-06-14 12:20:06,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:06,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:20:06,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:06,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:20:06,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:20:06,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:20:06,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 391 transitions, 3900 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:06,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:06,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:20:06,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:06,625 INFO L124 PetriNetUnfolderBase]: 924/1678 cut-off events. [2024-06-14 12:20:06,625 INFO L125 PetriNetUnfolderBase]: For 240810/240810 co-relation queries the response was YES. [2024-06-14 12:20:06,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13010 conditions, 1678 events. 924/1678 cut-off events. For 240810/240810 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 9791 event pairs, 127 based on Foata normal form. 1/1679 useless extension candidates. Maximal degree in co-relation 12796. Up to 1487 conditions per place. [2024-06-14 12:20:06,651 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 373 selfloop transitions, 55 changer transitions 0/431 dead transitions. [2024-06-14 12:20:06,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 431 transitions, 5006 flow [2024-06-14 12:20:06,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:20:06,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:20:06,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-14 12:20:06,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3627450980392157 [2024-06-14 12:20:06,652 INFO L175 Difference]: Start difference. First operand has 432 places, 391 transitions, 3900 flow. Second operand 12 states and 148 transitions. [2024-06-14 12:20:06,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 431 transitions, 5006 flow [2024-06-14 12:20:07,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 431 transitions, 4922 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-06-14 12:20:07,665 INFO L231 Difference]: Finished difference. Result has 444 places, 413 transitions, 4199 flow [2024-06-14 12:20:07,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3816, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4199, PETRI_PLACES=444, PETRI_TRANSITIONS=413} [2024-06-14 12:20:07,665 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 411 predicate places. [2024-06-14 12:20:07,665 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 413 transitions, 4199 flow [2024-06-14 12:20:07,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:07,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:07,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:07,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-14 12:20:07,666 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:20:07,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:07,666 INFO L85 PathProgramCache]: Analyzing trace with hash 920719776, now seen corresponding path program 12 times [2024-06-14 12:20:07,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:07,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045577016] [2024-06-14 12:20:07,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:07,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:07,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:08,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:08,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:08,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045577016] [2024-06-14 12:20:08,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045577016] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:08,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:08,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:20:08,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605207665] [2024-06-14 12:20:08,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:08,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:20:08,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:08,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:20:08,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:20:08,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:20:08,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 413 transitions, 4199 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:08,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:08,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:20:08,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:09,200 INFO L124 PetriNetUnfolderBase]: 1014/1842 cut-off events. [2024-06-14 12:20:09,200 INFO L125 PetriNetUnfolderBase]: For 304441/304441 co-relation queries the response was YES. [2024-06-14 12:20:09,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15027 conditions, 1842 events. 1014/1842 cut-off events. For 304441/304441 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 10990 event pairs, 82 based on Foata normal form. 2/1844 useless extension candidates. Maximal degree in co-relation 14807. Up to 1258 conditions per place. [2024-06-14 12:20:09,229 INFO L140 encePairwiseOnDemand]: 20/34 looper letters, 336 selfloop transitions, 126 changer transitions 0/465 dead transitions. [2024-06-14 12:20:09,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 465 transitions, 6406 flow [2024-06-14 12:20:09,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:20:09,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:20:09,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 164 transitions. [2024-06-14 12:20:09,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4019607843137255 [2024-06-14 12:20:09,230 INFO L175 Difference]: Start difference. First operand has 444 places, 413 transitions, 4199 flow. Second operand 12 states and 164 transitions. [2024-06-14 12:20:09,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 465 transitions, 6406 flow [2024-06-14 12:20:10,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 465 transitions, 6311 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-14 12:20:10,446 INFO L231 Difference]: Finished difference. Result has 454 places, 434 transitions, 4830 flow [2024-06-14 12:20:10,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=4104, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4830, PETRI_PLACES=454, PETRI_TRANSITIONS=434} [2024-06-14 12:20:10,447 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 421 predicate places. [2024-06-14 12:20:10,447 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 434 transitions, 4830 flow [2024-06-14 12:20:10,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:10,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:10,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:10,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-14 12:20:10,447 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:20:10,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:10,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1948981620, now seen corresponding path program 13 times [2024-06-14 12:20:10,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:10,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826886013] [2024-06-14 12:20:10,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:10,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:10,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:11,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:11,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:11,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826886013] [2024-06-14 12:20:11,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826886013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:11,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:11,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:20:11,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23763464] [2024-06-14 12:20:11,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:11,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:20:11,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:11,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:20:11,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:20:11,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:20:11,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 434 transitions, 4830 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:11,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:11,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:20:11,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:12,024 INFO L124 PetriNetUnfolderBase]: 1020/1858 cut-off events. [2024-06-14 12:20:12,024 INFO L125 PetriNetUnfolderBase]: For 311100/311100 co-relation queries the response was YES. [2024-06-14 12:20:12,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15665 conditions, 1858 events. 1020/1858 cut-off events. For 311100/311100 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 11150 event pairs, 106 based on Foata normal form. 2/1860 useless extension candidates. Maximal degree in co-relation 15441. Up to 1264 conditions per place. [2024-06-14 12:20:12,047 INFO L140 encePairwiseOnDemand]: 20/34 looper letters, 352 selfloop transitions, 110 changer transitions 0/465 dead transitions. [2024-06-14 12:20:12,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 465 transitions, 6259 flow [2024-06-14 12:20:12,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:20:12,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:20:12,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 162 transitions. [2024-06-14 12:20:12,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39705882352941174 [2024-06-14 12:20:12,048 INFO L175 Difference]: Start difference. First operand has 454 places, 434 transitions, 4830 flow. Second operand 12 states and 162 transitions. [2024-06-14 12:20:12,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 465 transitions, 6259 flow [2024-06-14 12:20:13,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 465 transitions, 6105 flow, removed 49 selfloop flow, removed 5 redundant places. [2024-06-14 12:20:13,289 INFO L231 Difference]: Finished difference. Result has 463 places, 438 transitions, 5048 flow [2024-06-14 12:20:13,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=4678, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5048, PETRI_PLACES=463, PETRI_TRANSITIONS=438} [2024-06-14 12:20:13,289 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 430 predicate places. [2024-06-14 12:20:13,289 INFO L495 AbstractCegarLoop]: Abstraction has has 463 places, 438 transitions, 5048 flow [2024-06-14 12:20:13,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:13,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:13,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:13,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-14 12:20:13,289 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:20:13,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:13,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1955476740, now seen corresponding path program 14 times [2024-06-14 12:20:13,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:13,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694913505] [2024-06-14 12:20:13,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:13,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:13,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:14,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:14,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:14,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694913505] [2024-06-14 12:20:14,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694913505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:14,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:14,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:20:14,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295414723] [2024-06-14 12:20:14,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:14,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:20:14,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:14,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:20:14,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:20:14,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:20:14,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 438 transitions, 5048 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:14,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:14,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:20:14,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:14,889 INFO L124 PetriNetUnfolderBase]: 1036/1882 cut-off events. [2024-06-14 12:20:14,889 INFO L125 PetriNetUnfolderBase]: For 332996/332996 co-relation queries the response was YES. [2024-06-14 12:20:14,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16477 conditions, 1882 events. 1036/1882 cut-off events. For 332996/332996 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 11307 event pairs, 102 based on Foata normal form. 2/1884 useless extension candidates. Maximal degree in co-relation 16249. Up to 1279 conditions per place. [2024-06-14 12:20:14,917 INFO L140 encePairwiseOnDemand]: 20/34 looper letters, 357 selfloop transitions, 111 changer transitions 0/471 dead transitions. [2024-06-14 12:20:14,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 471 transitions, 6831 flow [2024-06-14 12:20:14,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:20:14,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:20:14,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 165 transitions. [2024-06-14 12:20:14,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40441176470588236 [2024-06-14 12:20:14,918 INFO L175 Difference]: Start difference. First operand has 463 places, 438 transitions, 5048 flow. Second operand 12 states and 165 transitions. [2024-06-14 12:20:14,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 471 transitions, 6831 flow [2024-06-14 12:20:16,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 467 places, 471 transitions, 6549 flow, removed 49 selfloop flow, removed 7 redundant places. [2024-06-14 12:20:16,229 INFO L231 Difference]: Finished difference. Result has 469 places, 445 transitions, 5171 flow [2024-06-14 12:20:16,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=4794, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5171, PETRI_PLACES=469, PETRI_TRANSITIONS=445} [2024-06-14 12:20:16,230 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 436 predicate places. [2024-06-14 12:20:16,230 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 445 transitions, 5171 flow [2024-06-14 12:20:16,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:16,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:16,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:16,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-14 12:20:16,231 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:20:16,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:16,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1072831536, now seen corresponding path program 1 times [2024-06-14 12:20:16,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:16,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792106939] [2024-06-14 12:20:16,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:16,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:16,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:17,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:17,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:17,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792106939] [2024-06-14 12:20:17,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792106939] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:17,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:17,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:20:17,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059412909] [2024-06-14 12:20:17,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:17,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:20:17,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:17,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:20:17,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:20:17,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-06-14 12:20:17,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 445 transitions, 5171 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:17,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:17,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-06-14 12:20:17,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:18,089 INFO L124 PetriNetUnfolderBase]: 998/1843 cut-off events. [2024-06-14 12:20:18,089 INFO L125 PetriNetUnfolderBase]: For 343801/343804 co-relation queries the response was YES. [2024-06-14 12:20:18,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16068 conditions, 1843 events. 998/1843 cut-off events. For 343801/343804 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 11298 event pairs, 189 based on Foata normal form. 5/1845 useless extension candidates. Maximal degree in co-relation 15840. Up to 1575 conditions per place. [2024-06-14 12:20:18,120 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 379 selfloop transitions, 22 changer transitions 0/464 dead transitions. [2024-06-14 12:20:18,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 464 transitions, 6056 flow [2024-06-14 12:20:18,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:20:18,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:20:18,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-14 12:20:18,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37254901960784315 [2024-06-14 12:20:18,121 INFO L175 Difference]: Start difference. First operand has 469 places, 445 transitions, 5171 flow. Second operand 12 states and 152 transitions. [2024-06-14 12:20:18,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 464 transitions, 6056 flow [2024-06-14 12:20:19,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 464 transitions, 5840 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-14 12:20:19,532 INFO L231 Difference]: Finished difference. Result has 477 places, 449 transitions, 5064 flow [2024-06-14 12:20:19,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=4955, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5064, PETRI_PLACES=477, PETRI_TRANSITIONS=449} [2024-06-14 12:20:19,532 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 444 predicate places. [2024-06-14 12:20:19,532 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 449 transitions, 5064 flow [2024-06-14 12:20:19,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:19,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:19,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:19,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-14 12:20:19,533 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:20:19,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:19,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1072523954, now seen corresponding path program 15 times [2024-06-14 12:20:19,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:19,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886324113] [2024-06-14 12:20:19,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:19,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:19,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:20,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:20,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:20,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886324113] [2024-06-14 12:20:20,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886324113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:20,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:20,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:20:20,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696778108] [2024-06-14 12:20:20,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:20,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:20:20,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:20,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:20:20,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:20:20,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:20:20,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 449 transitions, 5064 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:20,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:20,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:20:20,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:21,151 INFO L124 PetriNetUnfolderBase]: 1039/1887 cut-off events. [2024-06-14 12:20:21,151 INFO L125 PetriNetUnfolderBase]: For 324008/324008 co-relation queries the response was YES. [2024-06-14 12:20:21,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15837 conditions, 1887 events. 1039/1887 cut-off events. For 324008/324008 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 11366 event pairs, 85 based on Foata normal form. 2/1889 useless extension candidates. Maximal degree in co-relation 15606. Up to 1289 conditions per place. [2024-06-14 12:20:21,198 INFO L140 encePairwiseOnDemand]: 20/34 looper letters, 336 selfloop transitions, 133 changer transitions 0/472 dead transitions. [2024-06-14 12:20:21,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 472 transitions, 6654 flow [2024-06-14 12:20:21,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:20:21,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:20:21,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 161 transitions. [2024-06-14 12:20:21,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3946078431372549 [2024-06-14 12:20:21,199 INFO L175 Difference]: Start difference. First operand has 477 places, 449 transitions, 5064 flow. Second operand 12 states and 161 transitions. [2024-06-14 12:20:21,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 472 transitions, 6654 flow [2024-06-14 12:20:22,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 472 transitions, 6431 flow, removed 38 selfloop flow, removed 10 redundant places. [2024-06-14 12:20:22,573 INFO L231 Difference]: Finished difference. Result has 479 places, 449 transitions, 5112 flow [2024-06-14 12:20:22,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=4841, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5112, PETRI_PLACES=479, PETRI_TRANSITIONS=449} [2024-06-14 12:20:22,573 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 446 predicate places. [2024-06-14 12:20:22,573 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 449 transitions, 5112 flow [2024-06-14 12:20:22,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:22,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:22,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:22,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-14 12:20:22,574 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:20:22,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:22,574 INFO L85 PathProgramCache]: Analyzing trace with hash 691031476, now seen corresponding path program 4 times [2024-06-14 12:20:22,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:22,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135232831] [2024-06-14 12:20:22,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:22,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:22,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:23,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:23,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:23,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135232831] [2024-06-14 12:20:23,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135232831] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:23,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:23,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:20:23,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343734290] [2024-06-14 12:20:23,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:23,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:20:23,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:23,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:20:23,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:20:23,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:20:23,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 449 transitions, 5112 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:23,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:23,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:20:23,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:24,455 INFO L124 PetriNetUnfolderBase]: 1042/1894 cut-off events. [2024-06-14 12:20:24,456 INFO L125 PetriNetUnfolderBase]: For 319838/319838 co-relation queries the response was YES. [2024-06-14 12:20:24,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16045 conditions, 1894 events. 1042/1894 cut-off events. For 319838/319838 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 11411 event pairs, 152 based on Foata normal form. 1/1895 useless extension candidates. Maximal degree in co-relation 15815. Up to 1683 conditions per place. [2024-06-14 12:20:24,482 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 413 selfloop transitions, 50 changer transitions 0/466 dead transitions. [2024-06-14 12:20:24,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 466 transitions, 6128 flow [2024-06-14 12:20:24,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:20:24,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:20:24,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-14 12:20:24,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36764705882352944 [2024-06-14 12:20:24,484 INFO L175 Difference]: Start difference. First operand has 479 places, 449 transitions, 5112 flow. Second operand 12 states and 150 transitions. [2024-06-14 12:20:24,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 466 transitions, 6128 flow [2024-06-14 12:20:25,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 480 places, 466 transitions, 5868 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-14 12:20:25,914 INFO L231 Difference]: Finished difference. Result has 481 places, 451 transitions, 5009 flow [2024-06-14 12:20:25,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=4852, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5009, PETRI_PLACES=481, PETRI_TRANSITIONS=451} [2024-06-14 12:20:25,915 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 448 predicate places. [2024-06-14 12:20:25,916 INFO L495 AbstractCegarLoop]: Abstraction has has 481 places, 451 transitions, 5009 flow [2024-06-14 12:20:25,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:25,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:25,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:25,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-14 12:20:25,917 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:20:25,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:25,917 INFO L85 PathProgramCache]: Analyzing trace with hash -2109513646, now seen corresponding path program 16 times [2024-06-14 12:20:25,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:25,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208182169] [2024-06-14 12:20:25,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:25,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:25,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:26,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:26,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:26,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208182169] [2024-06-14 12:20:26,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208182169] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:26,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:26,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:20:26,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225696968] [2024-06-14 12:20:26,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:26,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:20:26,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:26,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:20:26,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:20:26,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:20:26,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 451 transitions, 5009 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:26,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:26,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:20:26,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:27,514 INFO L124 PetriNetUnfolderBase]: 1038/1888 cut-off events. [2024-06-14 12:20:27,514 INFO L125 PetriNetUnfolderBase]: For 314384/314384 co-relation queries the response was YES. [2024-06-14 12:20:27,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15555 conditions, 1888 events. 1038/1888 cut-off events. For 314384/314384 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 11355 event pairs, 78 based on Foata normal form. 2/1890 useless extension candidates. Maximal degree in co-relation 15324. Up to 1291 conditions per place. [2024-06-14 12:20:27,545 INFO L140 encePairwiseOnDemand]: 20/34 looper letters, 320 selfloop transitions, 150 changer transitions 0/473 dead transitions. [2024-06-14 12:20:27,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 492 places, 473 transitions, 6337 flow [2024-06-14 12:20:27,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:20:27,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:20:27,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 159 transitions. [2024-06-14 12:20:27,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3897058823529412 [2024-06-14 12:20:27,547 INFO L175 Difference]: Start difference. First operand has 481 places, 451 transitions, 5009 flow. Second operand 12 states and 159 transitions. [2024-06-14 12:20:27,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 492 places, 473 transitions, 6337 flow [2024-06-14 12:20:28,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 473 transitions, 6158 flow, removed 44 selfloop flow, removed 7 redundant places. [2024-06-14 12:20:28,888 INFO L231 Difference]: Finished difference. Result has 487 places, 454 transitions, 5210 flow [2024-06-14 12:20:28,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=4830, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5210, PETRI_PLACES=487, PETRI_TRANSITIONS=454} [2024-06-14 12:20:28,888 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 454 predicate places. [2024-06-14 12:20:28,888 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 454 transitions, 5210 flow [2024-06-14 12:20:28,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:28,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:28,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:28,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-14 12:20:28,888 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:20:28,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:28,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1955237730, now seen corresponding path program 17 times [2024-06-14 12:20:28,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:28,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761456115] [2024-06-14 12:20:28,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:28,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:28,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:29,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:29,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:29,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761456115] [2024-06-14 12:20:29,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761456115] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:29,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:29,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:20:29,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486546114] [2024-06-14 12:20:29,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:29,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:20:29,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:29,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:20:29,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:20:29,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:20:29,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 454 transitions, 5210 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:29,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:29,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:20:29,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:30,509 INFO L124 PetriNetUnfolderBase]: 1044/1904 cut-off events. [2024-06-14 12:20:30,510 INFO L125 PetriNetUnfolderBase]: For 319441/319441 co-relation queries the response was YES. [2024-06-14 12:20:30,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16021 conditions, 1904 events. 1044/1904 cut-off events. For 319441/319441 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 11552 event pairs, 115 based on Foata normal form. 2/1906 useless extension candidates. Maximal degree in co-relation 15788. Up to 1297 conditions per place. [2024-06-14 12:20:30,539 INFO L140 encePairwiseOnDemand]: 20/34 looper letters, 365 selfloop transitions, 110 changer transitions 0/478 dead transitions. [2024-06-14 12:20:30,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 478 transitions, 6900 flow [2024-06-14 12:20:30,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:20:30,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:20:30,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 167 transitions. [2024-06-14 12:20:30,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40931372549019607 [2024-06-14 12:20:30,540 INFO L175 Difference]: Start difference. First operand has 487 places, 454 transitions, 5210 flow. Second operand 12 states and 167 transitions. [2024-06-14 12:20:30,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 478 transitions, 6900 flow [2024-06-14 12:20:31,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 478 transitions, 6713 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-14 12:20:31,981 INFO L231 Difference]: Finished difference. Result has 492 places, 456 transitions, 5310 flow [2024-06-14 12:20:31,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=5025, PETRI_DIFFERENCE_MINUEND_PLACES=480, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5310, PETRI_PLACES=492, PETRI_TRANSITIONS=456} [2024-06-14 12:20:31,982 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 459 predicate places. [2024-06-14 12:20:31,982 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 456 transitions, 5310 flow [2024-06-14 12:20:31,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:31,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:31,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:31,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-14 12:20:31,983 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:20:31,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:31,983 INFO L85 PathProgramCache]: Analyzing trace with hash -2109503106, now seen corresponding path program 5 times [2024-06-14 12:20:31,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:31,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375099553] [2024-06-14 12:20:31,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:31,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:31,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:33,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:33,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:33,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375099553] [2024-06-14 12:20:33,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375099553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:33,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:33,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:20:33,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094999393] [2024-06-14 12:20:33,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:33,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:20:33,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:33,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:20:33,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:20:33,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:20:33,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 456 transitions, 5310 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:33,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:33,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:20:33,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:33,782 INFO L124 PetriNetUnfolderBase]: 1052/1909 cut-off events. [2024-06-14 12:20:33,782 INFO L125 PetriNetUnfolderBase]: For 324521/324521 co-relation queries the response was YES. [2024-06-14 12:20:33,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16326 conditions, 1909 events. 1052/1909 cut-off events. For 324521/324521 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 11480 event pairs, 149 based on Foata normal form. 1/1910 useless extension candidates. Maximal degree in co-relation 16092. Up to 1679 conditions per place. [2024-06-14 12:20:33,816 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 402 selfloop transitions, 71 changer transitions 0/476 dead transitions. [2024-06-14 12:20:33,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 476 transitions, 6672 flow [2024-06-14 12:20:33,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:20:33,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:20:33,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 159 transitions. [2024-06-14 12:20:33,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3597285067873303 [2024-06-14 12:20:33,817 INFO L175 Difference]: Start difference. First operand has 492 places, 456 transitions, 5310 flow. Second operand 13 states and 159 transitions. [2024-06-14 12:20:33,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 476 transitions, 6672 flow [2024-06-14 12:20:35,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 476 transitions, 6424 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-14 12:20:35,270 INFO L231 Difference]: Finished difference. Result has 497 places, 460 transitions, 5318 flow [2024-06-14 12:20:35,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=5062, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5318, PETRI_PLACES=497, PETRI_TRANSITIONS=460} [2024-06-14 12:20:35,270 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 464 predicate places. [2024-06-14 12:20:35,270 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 460 transitions, 5318 flow [2024-06-14 12:20:35,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:35,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:35,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:35,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-14 12:20:35,271 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:20:35,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:35,271 INFO L85 PathProgramCache]: Analyzing trace with hash -2117853886, now seen corresponding path program 18 times [2024-06-14 12:20:35,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:35,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440751751] [2024-06-14 12:20:35,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:35,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:35,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:36,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:36,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:36,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440751751] [2024-06-14 12:20:36,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440751751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:36,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:36,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:20:36,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827616985] [2024-06-14 12:20:36,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:36,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:20:36,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:36,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:20:36,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:20:36,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:20:36,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 460 transitions, 5318 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:36,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:36,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:20:36,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:36,921 INFO L124 PetriNetUnfolderBase]: 1068/1937 cut-off events. [2024-06-14 12:20:36,922 INFO L125 PetriNetUnfolderBase]: For 358042/358042 co-relation queries the response was YES. [2024-06-14 12:20:36,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16757 conditions, 1937 events. 1068/1937 cut-off events. For 358042/358042 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 11694 event pairs, 107 based on Foata normal form. 2/1939 useless extension candidates. Maximal degree in co-relation 16522. Up to 1325 conditions per place. [2024-06-14 12:20:36,954 INFO L140 encePairwiseOnDemand]: 20/34 looper letters, 357 selfloop transitions, 126 changer transitions 0/486 dead transitions. [2024-06-14 12:20:36,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 486 transitions, 7352 flow [2024-06-14 12:20:36,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:20:36,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:20:36,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 166 transitions. [2024-06-14 12:20:36,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4068627450980392 [2024-06-14 12:20:36,955 INFO L175 Difference]: Start difference. First operand has 497 places, 460 transitions, 5318 flow. Second operand 12 states and 166 transitions. [2024-06-14 12:20:36,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 486 transitions, 7352 flow [2024-06-14 12:20:38,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 486 transitions, 7251 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-14 12:20:38,564 INFO L231 Difference]: Finished difference. Result has 502 places, 464 transitions, 5594 flow [2024-06-14 12:20:38,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=5217, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5594, PETRI_PLACES=502, PETRI_TRANSITIONS=464} [2024-06-14 12:20:38,565 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 469 predicate places. [2024-06-14 12:20:38,565 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 464 transitions, 5594 flow [2024-06-14 12:20:38,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:38,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:38,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:38,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-14 12:20:38,565 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:20:38,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:38,565 INFO L85 PathProgramCache]: Analyzing trace with hash -2118084526, now seen corresponding path program 19 times [2024-06-14 12:20:38,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:38,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749100231] [2024-06-14 12:20:38,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:38,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:38,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:39,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:39,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:39,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749100231] [2024-06-14 12:20:39,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749100231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:39,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:39,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:20:39,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221983448] [2024-06-14 12:20:39,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:39,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:20:39,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:39,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:20:39,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:20:39,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:20:39,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 464 transitions, 5594 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:39,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:39,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:20:39,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:40,167 INFO L124 PetriNetUnfolderBase]: 1064/1931 cut-off events. [2024-06-14 12:20:40,167 INFO L125 PetriNetUnfolderBase]: For 344487/344487 co-relation queries the response was YES. [2024-06-14 12:20:40,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16691 conditions, 1931 events. 1064/1931 cut-off events. For 344487/344487 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 11655 event pairs, 109 based on Foata normal form. 2/1933 useless extension candidates. Maximal degree in co-relation 16454. Up to 1322 conditions per place. [2024-06-14 12:20:40,209 INFO L140 encePairwiseOnDemand]: 20/34 looper letters, 352 selfloop transitions, 129 changer transitions 0/484 dead transitions. [2024-06-14 12:20:40,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 484 transitions, 7214 flow [2024-06-14 12:20:40,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:20:40,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:20:40,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 162 transitions. [2024-06-14 12:20:40,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39705882352941174 [2024-06-14 12:20:40,210 INFO L175 Difference]: Start difference. First operand has 502 places, 464 transitions, 5594 flow. Second operand 12 states and 162 transitions. [2024-06-14 12:20:40,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 484 transitions, 7214 flow [2024-06-14 12:20:41,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 484 transitions, 6807 flow, removed 44 selfloop flow, removed 9 redundant places. [2024-06-14 12:20:41,721 INFO L231 Difference]: Finished difference. Result has 505 places, 464 transitions, 5450 flow [2024-06-14 12:20:41,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=5187, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5450, PETRI_PLACES=505, PETRI_TRANSITIONS=464} [2024-06-14 12:20:41,722 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 472 predicate places. [2024-06-14 12:20:41,722 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 464 transitions, 5450 flow [2024-06-14 12:20:41,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:41,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:41,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:41,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-14 12:20:41,722 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:20:41,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:41,722 INFO L85 PathProgramCache]: Analyzing trace with hash -2117845206, now seen corresponding path program 6 times [2024-06-14 12:20:41,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:41,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245793884] [2024-06-14 12:20:41,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:41,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:41,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:42,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:42,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:42,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245793884] [2024-06-14 12:20:42,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245793884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:42,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:42,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:20:42,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209369538] [2024-06-14 12:20:42,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:42,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:20:42,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:42,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:20:42,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:20:42,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:20:42,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 464 transitions, 5450 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:42,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:42,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:20:42,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:43,526 INFO L124 PetriNetUnfolderBase]: 1062/1930 cut-off events. [2024-06-14 12:20:43,527 INFO L125 PetriNetUnfolderBase]: For 328277/328277 co-relation queries the response was YES. [2024-06-14 12:20:43,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16420 conditions, 1930 events. 1062/1930 cut-off events. For 328277/328277 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 11668 event pairs, 155 based on Foata normal form. 1/1931 useless extension candidates. Maximal degree in co-relation 16182. Up to 1717 conditions per place. [2024-06-14 12:20:43,560 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 423 selfloop transitions, 52 changer transitions 0/478 dead transitions. [2024-06-14 12:20:43,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 478 transitions, 6434 flow [2024-06-14 12:20:43,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:20:43,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:20:43,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-14 12:20:43,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36519607843137253 [2024-06-14 12:20:43,561 INFO L175 Difference]: Start difference. First operand has 505 places, 464 transitions, 5450 flow. Second operand 12 states and 149 transitions. [2024-06-14 12:20:43,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 478 transitions, 6434 flow [2024-06-14 12:20:45,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 478 transitions, 6137 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-14 12:20:45,022 INFO L231 Difference]: Finished difference. Result has 508 places, 464 transitions, 5262 flow [2024-06-14 12:20:45,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=5153, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5262, PETRI_PLACES=508, PETRI_TRANSITIONS=464} [2024-06-14 12:20:45,022 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 475 predicate places. [2024-06-14 12:20:45,022 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 464 transitions, 5262 flow [2024-06-14 12:20:45,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:45,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:45,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:45,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-14 12:20:45,022 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:20:45,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:45,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1064488754, now seen corresponding path program 20 times [2024-06-14 12:20:45,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:45,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671230897] [2024-06-14 12:20:45,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:45,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:45,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:45,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:45,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:45,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671230897] [2024-06-14 12:20:45,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671230897] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:45,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:45,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:20:45,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314738078] [2024-06-14 12:20:45,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:45,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:20:45,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:45,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:20:45,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:20:46,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:20:46,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 464 transitions, 5262 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:46,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:46,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:20:46,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:46,571 INFO L124 PetriNetUnfolderBase]: 1058/1922 cut-off events. [2024-06-14 12:20:46,571 INFO L125 PetriNetUnfolderBase]: For 321868/321868 co-relation queries the response was YES. [2024-06-14 12:20:46,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15888 conditions, 1922 events. 1058/1922 cut-off events. For 321868/321868 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 11635 event pairs, 106 based on Foata normal form. 2/1924 useless extension candidates. Maximal degree in co-relation 15649. Up to 1316 conditions per place. [2024-06-14 12:20:46,602 INFO L140 encePairwiseOnDemand]: 20/34 looper letters, 354 selfloop transitions, 127 changer transitions 0/484 dead transitions. [2024-06-14 12:20:46,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 484 transitions, 6622 flow [2024-06-14 12:20:46,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:20:46,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:20:46,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 163 transitions. [2024-06-14 12:20:46,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39950980392156865 [2024-06-14 12:20:46,603 INFO L175 Difference]: Start difference. First operand has 508 places, 464 transitions, 5262 flow. Second operand 12 states and 163 transitions. [2024-06-14 12:20:46,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 484 transitions, 6622 flow [2024-06-14 12:20:48,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 484 transitions, 6399 flow, removed 31 selfloop flow, removed 12 redundant places. [2024-06-14 12:20:48,010 INFO L231 Difference]: Finished difference. Result has 508 places, 464 transitions, 5298 flow [2024-06-14 12:20:48,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=5039, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5298, PETRI_PLACES=508, PETRI_TRANSITIONS=464} [2024-06-14 12:20:48,011 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 475 predicate places. [2024-06-14 12:20:48,011 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 464 transitions, 5298 flow [2024-06-14 12:20:48,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:48,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:48,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:48,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-14 12:20:48,011 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:20:48,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:48,012 INFO L85 PathProgramCache]: Analyzing trace with hash 842835344, now seen corresponding path program 21 times [2024-06-14 12:20:48,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:48,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296010498] [2024-06-14 12:20:48,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:48,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:48,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:48,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:48,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:48,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296010498] [2024-06-14 12:20:48,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296010498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:48,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:48,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:20:48,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599566758] [2024-06-14 12:20:48,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:48,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:20:48,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:48,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:20:48,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:20:48,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:20:48,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 464 transitions, 5298 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:48,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:48,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:20:48,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:49,543 INFO L124 PetriNetUnfolderBase]: 1054/1920 cut-off events. [2024-06-14 12:20:49,543 INFO L125 PetriNetUnfolderBase]: For 306265/306265 co-relation queries the response was YES. [2024-06-14 12:20:49,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15682 conditions, 1920 events. 1054/1920 cut-off events. For 306265/306265 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 11654 event pairs, 109 based on Foata normal form. 2/1922 useless extension candidates. Maximal degree in co-relation 15442. Up to 1313 conditions per place. [2024-06-14 12:20:49,576 INFO L140 encePairwiseOnDemand]: 20/34 looper letters, 366 selfloop transitions, 115 changer transitions 0/484 dead transitions. [2024-06-14 12:20:49,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 484 transitions, 6390 flow [2024-06-14 12:20:49,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:20:49,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:20:49,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 164 transitions. [2024-06-14 12:20:49,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4019607843137255 [2024-06-14 12:20:49,577 INFO L175 Difference]: Start difference. First operand has 508 places, 464 transitions, 5298 flow. Second operand 12 states and 164 transitions. [2024-06-14 12:20:49,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 484 transitions, 6390 flow [2024-06-14 12:20:50,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 484 transitions, 6034 flow, removed 22 selfloop flow, removed 10 redundant places. [2024-06-14 12:20:50,903 INFO L231 Difference]: Finished difference. Result has 510 places, 464 transitions, 5177 flow [2024-06-14 12:20:50,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=4942, PETRI_DIFFERENCE_MINUEND_PLACES=498, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5177, PETRI_PLACES=510, PETRI_TRANSITIONS=464} [2024-06-14 12:20:50,903 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 477 predicate places. [2024-06-14 12:20:50,903 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 464 transitions, 5177 flow [2024-06-14 12:20:50,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:50,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:50,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:50,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-14 12:20:50,904 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:20:50,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:50,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1811900482, now seen corresponding path program 13 times [2024-06-14 12:20:50,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:50,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389402831] [2024-06-14 12:20:50,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:50,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:50,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:51,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:51,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:51,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389402831] [2024-06-14 12:20:51,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389402831] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:51,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:51,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:20:51,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026813540] [2024-06-14 12:20:51,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:51,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:20:51,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:51,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:20:51,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:20:51,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-06-14 12:20:51,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 464 transitions, 5177 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:51,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:51,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-06-14 12:20:51,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:52,552 INFO L124 PetriNetUnfolderBase]: 954/1801 cut-off events. [2024-06-14 12:20:52,552 INFO L125 PetriNetUnfolderBase]: For 314430/314464 co-relation queries the response was YES. [2024-06-14 12:20:52,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14858 conditions, 1801 events. 954/1801 cut-off events. For 314430/314464 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 11273 event pairs, 127 based on Foata normal form. 20/1790 useless extension candidates. Maximal degree in co-relation 14617. Up to 1483 conditions per place. [2024-06-14 12:20:52,584 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 393 selfloop transitions, 46 changer transitions 0/483 dead transitions. [2024-06-14 12:20:52,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 483 transitions, 6171 flow [2024-06-14 12:20:52,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:20:52,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:20:52,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-14 12:20:52,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39705882352941174 [2024-06-14 12:20:52,585 INFO L175 Difference]: Start difference. First operand has 510 places, 464 transitions, 5177 flow. Second operand 10 states and 135 transitions. [2024-06-14 12:20:52,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 483 transitions, 6171 flow [2024-06-14 12:20:53,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 483 transitions, 5938 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-14 12:20:53,994 INFO L231 Difference]: Finished difference. Result has 511 places, 467 transitions, 5138 flow [2024-06-14 12:20:53,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=4944, PETRI_DIFFERENCE_MINUEND_PLACES=500, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5138, PETRI_PLACES=511, PETRI_TRANSITIONS=467} [2024-06-14 12:20:53,994 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 478 predicate places. [2024-06-14 12:20:53,994 INFO L495 AbstractCegarLoop]: Abstraction has has 511 places, 467 transitions, 5138 flow [2024-06-14 12:20:53,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:53,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:53,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:53,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-14 12:20:53,994 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:20:53,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:53,995 INFO L85 PathProgramCache]: Analyzing trace with hash -291481074, now seen corresponding path program 5 times [2024-06-14 12:20:53,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:53,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012522338] [2024-06-14 12:20:53,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:53,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:54,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:54,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:54,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:54,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012522338] [2024-06-14 12:20:54,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012522338] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:54,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:54,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:20:54,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961334360] [2024-06-14 12:20:54,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:54,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:20:54,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:54,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:20:54,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:20:55,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:20:55,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 511 places, 467 transitions, 5138 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:55,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:55,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:20:55,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:55,744 INFO L124 PetriNetUnfolderBase]: 1056/1921 cut-off events. [2024-06-14 12:20:55,744 INFO L125 PetriNetUnfolderBase]: For 295557/295557 co-relation queries the response was YES. [2024-06-14 12:20:55,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15560 conditions, 1921 events. 1056/1921 cut-off events. For 295557/295557 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 11668 event pairs, 168 based on Foata normal form. 1/1922 useless extension candidates. Maximal degree in co-relation 15317. Up to 1687 conditions per place. [2024-06-14 12:20:55,776 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 417 selfloop transitions, 67 changer transitions 0/487 dead transitions. [2024-06-14 12:20:55,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 487 transitions, 6214 flow [2024-06-14 12:20:55,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:20:55,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:20:55,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-14 12:20:55,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3716577540106952 [2024-06-14 12:20:55,777 INFO L175 Difference]: Start difference. First operand has 511 places, 467 transitions, 5138 flow. Second operand 11 states and 139 transitions. [2024-06-14 12:20:55,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 487 transitions, 6214 flow [2024-06-14 12:20:57,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 514 places, 487 transitions, 6072 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-14 12:20:57,033 INFO L231 Difference]: Finished difference. Result has 515 places, 469 transitions, 5213 flow [2024-06-14 12:20:57,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=4996, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5213, PETRI_PLACES=515, PETRI_TRANSITIONS=469} [2024-06-14 12:20:57,033 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 482 predicate places. [2024-06-14 12:20:57,033 INFO L495 AbstractCegarLoop]: Abstraction has has 515 places, 469 transitions, 5213 flow [2024-06-14 12:20:57,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:57,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:57,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:57,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-14 12:20:57,034 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:20:57,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:57,034 INFO L85 PathProgramCache]: Analyzing trace with hash -176604812, now seen corresponding path program 22 times [2024-06-14 12:20:57,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:57,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114558323] [2024-06-14 12:20:57,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:57,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:57,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:57,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:57,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:57,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114558323] [2024-06-14 12:20:57,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114558323] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:57,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:57,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:20:57,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106658031] [2024-06-14 12:20:57,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:57,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:20:57,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:57,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:20:57,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:20:57,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:20:57,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 469 transitions, 5213 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:57,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:57,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:20:57,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:58,590 INFO L124 PetriNetUnfolderBase]: 1062/1931 cut-off events. [2024-06-14 12:20:58,591 INFO L125 PetriNetUnfolderBase]: For 293431/293431 co-relation queries the response was YES. [2024-06-14 12:20:58,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15090 conditions, 1931 events. 1062/1931 cut-off events. For 293431/293431 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 11712 event pairs, 161 based on Foata normal form. 2/1933 useless extension candidates. Maximal degree in co-relation 14846. Up to 1648 conditions per place. [2024-06-14 12:20:58,625 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 425 selfloop transitions, 62 changer transitions 0/490 dead transitions. [2024-06-14 12:20:58,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 525 places, 490 transitions, 6325 flow [2024-06-14 12:20:58,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:20:58,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:20:58,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-14 12:20:58,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37433155080213903 [2024-06-14 12:20:58,626 INFO L175 Difference]: Start difference. First operand has 515 places, 469 transitions, 5213 flow. Second operand 11 states and 140 transitions. [2024-06-14 12:20:58,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 525 places, 490 transitions, 6325 flow [2024-06-14 12:20:59,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 490 transitions, 6132 flow, removed 37 selfloop flow, removed 9 redundant places. [2024-06-14 12:20:59,808 INFO L231 Difference]: Finished difference. Result has 517 places, 471 transitions, 5224 flow [2024-06-14 12:20:59,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=5028, PETRI_DIFFERENCE_MINUEND_PLACES=506, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5224, PETRI_PLACES=517, PETRI_TRANSITIONS=471} [2024-06-14 12:20:59,808 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 484 predicate places. [2024-06-14 12:20:59,808 INFO L495 AbstractCegarLoop]: Abstraction has has 517 places, 471 transitions, 5224 flow [2024-06-14 12:20:59,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:59,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:59,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:59,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-14 12:20:59,809 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:20:59,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:59,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1645666702, now seen corresponding path program 14 times [2024-06-14 12:20:59,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:59,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112923945] [2024-06-14 12:20:59,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:59,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:59,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:00,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:00,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:00,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112923945] [2024-06-14 12:21:00,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112923945] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:00,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:00,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:21:00,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132065816] [2024-06-14 12:21:00,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:00,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:21:00,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:00,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:21:00,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:21:00,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-06-14 12:21:00,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 471 transitions, 5224 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:00,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:00,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-06-14 12:21:00,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:01,381 INFO L124 PetriNetUnfolderBase]: 962/1815 cut-off events. [2024-06-14 12:21:01,382 INFO L125 PetriNetUnfolderBase]: For 286022/286048 co-relation queries the response was YES. [2024-06-14 12:21:01,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14289 conditions, 1815 events. 962/1815 cut-off events. For 286022/286048 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 11464 event pairs, 124 based on Foata normal form. 24/1805 useless extension candidates. Maximal degree in co-relation 14044. Up to 1477 conditions per place. [2024-06-14 12:21:01,411 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 389 selfloop transitions, 55 changer transitions 0/488 dead transitions. [2024-06-14 12:21:01,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 488 transitions, 6212 flow [2024-06-14 12:21:01,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:21:01,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:21:01,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-14 12:21:01,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39705882352941174 [2024-06-14 12:21:01,412 INFO L175 Difference]: Start difference. First operand has 517 places, 471 transitions, 5224 flow. Second operand 10 states and 135 transitions. [2024-06-14 12:21:01,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 488 transitions, 6212 flow [2024-06-14 12:21:02,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 488 transitions, 6048 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-14 12:21:02,387 INFO L231 Difference]: Finished difference. Result has 519 places, 474 transitions, 5257 flow [2024-06-14 12:21:02,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=5060, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5257, PETRI_PLACES=519, PETRI_TRANSITIONS=474} [2024-06-14 12:21:02,388 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 486 predicate places. [2024-06-14 12:21:02,388 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 474 transitions, 5257 flow [2024-06-14 12:21:02,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:02,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:02,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:02,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-14 12:21:02,388 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:21:02,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:02,388 INFO L85 PathProgramCache]: Analyzing trace with hash -10371032, now seen corresponding path program 23 times [2024-06-14 12:21:02,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:02,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854987396] [2024-06-14 12:21:02,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:02,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:02,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:03,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:03,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:03,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854987396] [2024-06-14 12:21:03,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854987396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:03,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:03,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:21:03,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254957298] [2024-06-14 12:21:03,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:03,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:21:03,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:03,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:21:03,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:21:03,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:21:03,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 474 transitions, 5257 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:03,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:03,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:21:03,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:03,939 INFO L124 PetriNetUnfolderBase]: 1082/1973 cut-off events. [2024-06-14 12:21:03,939 INFO L125 PetriNetUnfolderBase]: For 295318/295318 co-relation queries the response was YES. [2024-06-14 12:21:03,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15572 conditions, 1973 events. 1082/1973 cut-off events. For 295318/295318 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 12088 event pairs, 149 based on Foata normal form. 2/1975 useless extension candidates. Maximal degree in co-relation 15325. Up to 1435 conditions per place. [2024-06-14 12:21:03,971 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 388 selfloop transitions, 107 changer transitions 0/498 dead transitions. [2024-06-14 12:21:03,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 498 transitions, 6719 flow [2024-06-14 12:21:03,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:21:03,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:21:03,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-14 12:21:03,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.393048128342246 [2024-06-14 12:21:03,972 INFO L175 Difference]: Start difference. First operand has 519 places, 474 transitions, 5257 flow. Second operand 11 states and 147 transitions. [2024-06-14 12:21:03,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 498 transitions, 6719 flow [2024-06-14 12:21:05,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 519 places, 498 transitions, 6520 flow, removed 46 selfloop flow, removed 10 redundant places. [2024-06-14 12:21:05,179 INFO L231 Difference]: Finished difference. Result has 520 places, 478 transitions, 5403 flow [2024-06-14 12:21:05,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=5082, PETRI_DIFFERENCE_MINUEND_PLACES=509, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5403, PETRI_PLACES=520, PETRI_TRANSITIONS=478} [2024-06-14 12:21:05,179 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 487 predicate places. [2024-06-14 12:21:05,179 INFO L495 AbstractCegarLoop]: Abstraction has has 520 places, 478 transitions, 5403 flow [2024-06-14 12:21:05,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:05,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:05,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:05,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-14 12:21:05,180 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:21:05,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:05,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1639225894, now seen corresponding path program 24 times [2024-06-14 12:21:05,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:05,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745805115] [2024-06-14 12:21:05,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:05,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:05,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:06,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:06,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:06,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745805115] [2024-06-14 12:21:06,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745805115] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:06,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:06,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:21:06,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782231504] [2024-06-14 12:21:06,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:06,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:21:06,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:06,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:21:06,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:21:06,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:21:06,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 520 places, 478 transitions, 5403 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:06,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:06,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:21:06,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:06,797 INFO L124 PetriNetUnfolderBase]: 1088/1983 cut-off events. [2024-06-14 12:21:06,797 INFO L125 PetriNetUnfolderBase]: For 289147/289147 co-relation queries the response was YES. [2024-06-14 12:21:06,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15346 conditions, 1983 events. 1088/1983 cut-off events. For 289147/289147 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 12144 event pairs, 147 based on Foata normal form. 2/1985 useless extension candidates. Maximal degree in co-relation 15101. Up to 1441 conditions per place. [2024-06-14 12:21:06,832 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 379 selfloop transitions, 117 changer transitions 0/499 dead transitions. [2024-06-14 12:21:06,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 530 places, 499 transitions, 6793 flow [2024-06-14 12:21:06,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:21:06,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:21:06,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-14 12:21:06,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39037433155080214 [2024-06-14 12:21:06,833 INFO L175 Difference]: Start difference. First operand has 520 places, 478 transitions, 5403 flow. Second operand 11 states and 146 transitions. [2024-06-14 12:21:06,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 530 places, 499 transitions, 6793 flow [2024-06-14 12:21:07,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 521 places, 499 transitions, 6642 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-14 12:21:07,957 INFO L231 Difference]: Finished difference. Result has 522 places, 480 transitions, 5551 flow [2024-06-14 12:21:07,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=5260, PETRI_DIFFERENCE_MINUEND_PLACES=511, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=478, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5551, PETRI_PLACES=522, PETRI_TRANSITIONS=480} [2024-06-14 12:21:07,958 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 489 predicate places. [2024-06-14 12:21:07,958 INFO L495 AbstractCegarLoop]: Abstraction has has 522 places, 480 transitions, 5551 flow [2024-06-14 12:21:07,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:07,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:07,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:07,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-14 12:21:07,958 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:21:07,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:07,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1638995254, now seen corresponding path program 25 times [2024-06-14 12:21:07,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:07,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652738812] [2024-06-14 12:21:07,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:07,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:07,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:08,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:08,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:08,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652738812] [2024-06-14 12:21:08,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652738812] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:08,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:08,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:21:08,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206811862] [2024-06-14 12:21:08,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:08,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:21:08,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:08,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:21:08,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:21:08,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:21:08,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 522 places, 480 transitions, 5551 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:08,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:08,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:21:08,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:09,623 INFO L124 PetriNetUnfolderBase]: 1094/1993 cut-off events. [2024-06-14 12:21:09,624 INFO L125 PetriNetUnfolderBase]: For 285426/285426 co-relation queries the response was YES. [2024-06-14 12:21:09,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15572 conditions, 1993 events. 1094/1993 cut-off events. For 285426/285426 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 12246 event pairs, 121 based on Foata normal form. 2/1995 useless extension candidates. Maximal degree in co-relation 15327. Up to 1447 conditions per place. [2024-06-14 12:21:09,655 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 372 selfloop transitions, 126 changer transitions 0/501 dead transitions. [2024-06-14 12:21:09,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 501 transitions, 6943 flow [2024-06-14 12:21:09,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:21:09,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:21:09,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-14 12:21:09,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3877005347593583 [2024-06-14 12:21:09,656 INFO L175 Difference]: Start difference. First operand has 522 places, 480 transitions, 5551 flow. Second operand 11 states and 145 transitions. [2024-06-14 12:21:09,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 501 transitions, 6943 flow [2024-06-14 12:21:10,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 521 places, 501 transitions, 6648 flow, removed 21 selfloop flow, removed 11 redundant places. [2024-06-14 12:21:10,921 INFO L231 Difference]: Finished difference. Result has 522 places, 482 transitions, 5573 flow [2024-06-14 12:21:10,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=5264, PETRI_DIFFERENCE_MINUEND_PLACES=511, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5573, PETRI_PLACES=522, PETRI_TRANSITIONS=482} [2024-06-14 12:21:10,922 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 489 predicate places. [2024-06-14 12:21:10,922 INFO L495 AbstractCegarLoop]: Abstraction has has 522 places, 482 transitions, 5573 flow [2024-06-14 12:21:10,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:10,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:10,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:10,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-14 12:21:10,922 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:21:10,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:10,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1638986574, now seen corresponding path program 7 times [2024-06-14 12:21:10,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:10,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269813390] [2024-06-14 12:21:10,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:10,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:10,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:12,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:12,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:12,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269813390] [2024-06-14 12:21:12,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269813390] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:12,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:12,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:21:12,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078665054] [2024-06-14 12:21:12,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:12,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:21:12,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:12,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:21:12,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:21:12,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:21:12,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 522 places, 482 transitions, 5573 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:12,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:12,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:21:12,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:12,768 INFO L124 PetriNetUnfolderBase]: 1097/2002 cut-off events. [2024-06-14 12:21:12,769 INFO L125 PetriNetUnfolderBase]: For 272729/272729 co-relation queries the response was YES. [2024-06-14 12:21:12,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15606 conditions, 2002 events. 1097/2002 cut-off events. For 272729/272729 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 12350 event pairs, 199 based on Foata normal form. 1/2003 useless extension candidates. Maximal degree in co-relation 15362. Up to 1803 conditions per place. [2024-06-14 12:21:12,802 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 448 selfloop transitions, 47 changer transitions 0/498 dead transitions. [2024-06-14 12:21:12,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 498 transitions, 6653 flow [2024-06-14 12:21:12,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:21:12,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:21:12,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-14 12:21:12,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35561497326203206 [2024-06-14 12:21:12,803 INFO L175 Difference]: Start difference. First operand has 522 places, 482 transitions, 5573 flow. Second operand 11 states and 133 transitions. [2024-06-14 12:21:12,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 498 transitions, 6653 flow [2024-06-14 12:21:13,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 521 places, 498 transitions, 6352 flow, removed 20 selfloop flow, removed 11 redundant places. [2024-06-14 12:21:13,923 INFO L231 Difference]: Finished difference. Result has 522 places, 484 transitions, 5437 flow [2024-06-14 12:21:13,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=5272, PETRI_DIFFERENCE_MINUEND_PLACES=511, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5437, PETRI_PLACES=522, PETRI_TRANSITIONS=484} [2024-06-14 12:21:13,924 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 489 predicate places. [2024-06-14 12:21:13,924 INFO L495 AbstractCegarLoop]: Abstraction has has 522 places, 484 transitions, 5437 flow [2024-06-14 12:21:13,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:13,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:13,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:13,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-14 12:21:13,924 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:21:13,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:13,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1638986884, now seen corresponding path program 26 times [2024-06-14 12:21:13,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:13,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725486811] [2024-06-14 12:21:13,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:13,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:13,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:14,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:14,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:14,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725486811] [2024-06-14 12:21:14,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725486811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:14,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:14,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:21:14,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297153415] [2024-06-14 12:21:14,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:14,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:21:14,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:14,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:21:14,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:21:14,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:21:14,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 522 places, 484 transitions, 5437 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:14,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:14,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:21:14,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:15,497 INFO L124 PetriNetUnfolderBase]: 1093/1994 cut-off events. [2024-06-14 12:21:15,497 INFO L125 PetriNetUnfolderBase]: For 258280/258280 co-relation queries the response was YES. [2024-06-14 12:21:15,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15031 conditions, 1994 events. 1093/1994 cut-off events. For 258280/258280 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 12274 event pairs, 120 based on Foata normal form. 2/1996 useless extension candidates. Maximal degree in co-relation 14788. Up to 1449 conditions per place. [2024-06-14 12:21:15,531 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 363 selfloop transitions, 136 changer transitions 0/502 dead transitions. [2024-06-14 12:21:15,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 502 transitions, 6509 flow [2024-06-14 12:21:15,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:21:15,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:21:15,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-14 12:21:15,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38235294117647056 [2024-06-14 12:21:15,532 INFO L175 Difference]: Start difference. First operand has 522 places, 484 transitions, 5437 flow. Second operand 11 states and 143 transitions. [2024-06-14 12:21:15,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 502 transitions, 6509 flow [2024-06-14 12:21:16,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 523 places, 502 transitions, 6342 flow, removed 41 selfloop flow, removed 9 redundant places. [2024-06-14 12:21:16,591 INFO L231 Difference]: Finished difference. Result has 524 places, 484 transitions, 5553 flow [2024-06-14 12:21:16,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=5270, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5553, PETRI_PLACES=524, PETRI_TRANSITIONS=484} [2024-06-14 12:21:16,591 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 491 predicate places. [2024-06-14 12:21:16,591 INFO L495 AbstractCegarLoop]: Abstraction has has 524 places, 484 transitions, 5553 flow [2024-06-14 12:21:16,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:16,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:16,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:16,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-14 12:21:16,592 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:21:16,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:16,592 INFO L85 PathProgramCache]: Analyzing trace with hash 908360340, now seen corresponding path program 15 times [2024-06-14 12:21:16,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:16,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051586095] [2024-06-14 12:21:16,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:16,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:16,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:17,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:17,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:17,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051586095] [2024-06-14 12:21:17,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051586095] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:17,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:17,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:21:17,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30942390] [2024-06-14 12:21:17,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:17,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:21:17,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:17,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:21:17,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:21:17,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-06-14 12:21:17,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 524 places, 484 transitions, 5553 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:17,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:17,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-06-14 12:21:17,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:18,156 INFO L124 PetriNetUnfolderBase]: 993/1884 cut-off events. [2024-06-14 12:21:18,156 INFO L125 PetriNetUnfolderBase]: For 255905/255939 co-relation queries the response was YES. [2024-06-14 12:21:18,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14538 conditions, 1884 events. 993/1884 cut-off events. For 255905/255939 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 12042 event pairs, 80 based on Foata normal form. 26/1876 useless extension candidates. Maximal degree in co-relation 14294. Up to 1512 conditions per place. [2024-06-14 12:21:18,187 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 394 selfloop transitions, 61 changer transitions 0/499 dead transitions. [2024-06-14 12:21:18,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 533 places, 499 transitions, 6551 flow [2024-06-14 12:21:18,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:21:18,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:21:18,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-14 12:21:18,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3941176470588235 [2024-06-14 12:21:18,188 INFO L175 Difference]: Start difference. First operand has 524 places, 484 transitions, 5553 flow. Second operand 10 states and 134 transitions. [2024-06-14 12:21:18,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 533 places, 499 transitions, 6551 flow [2024-06-14 12:21:19,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 519 places, 499 transitions, 6244 flow, removed 7 selfloop flow, removed 14 redundant places. [2024-06-14 12:21:19,075 INFO L231 Difference]: Finished difference. Result has 521 places, 487 transitions, 5444 flow [2024-06-14 12:21:19,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=5246, PETRI_DIFFERENCE_MINUEND_PLACES=510, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5444, PETRI_PLACES=521, PETRI_TRANSITIONS=487} [2024-06-14 12:21:19,076 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 488 predicate places. [2024-06-14 12:21:19,076 INFO L495 AbstractCegarLoop]: Abstraction has has 521 places, 487 transitions, 5444 flow [2024-06-14 12:21:19,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:19,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:19,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:19,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-14 12:21:19,076 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:21:19,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:19,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1523410136, now seen corresponding path program 27 times [2024-06-14 12:21:19,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:19,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586096832] [2024-06-14 12:21:19,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:19,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:19,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:19,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:19,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:19,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586096832] [2024-06-14 12:21:19,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586096832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:19,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:19,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:21:19,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963805686] [2024-06-14 12:21:19,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:19,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:21:19,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:19,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:21:19,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:21:20,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:21:20,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 521 places, 487 transitions, 5444 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:20,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:20,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:21:20,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:20,688 INFO L124 PetriNetUnfolderBase]: 1123/2044 cut-off events. [2024-06-14 12:21:20,688 INFO L125 PetriNetUnfolderBase]: For 288022/288022 co-relation queries the response was YES. [2024-06-14 12:21:20,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16059 conditions, 2044 events. 1123/2044 cut-off events. For 288022/288022 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 12563 event pairs, 115 based on Foata normal form. 2/2046 useless extension candidates. Maximal degree in co-relation 15817. Up to 1157 conditions per place. [2024-06-14 12:21:20,721 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 321 selfloop transitions, 187 changer transitions 0/511 dead transitions. [2024-06-14 12:21:20,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 511 transitions, 7214 flow [2024-06-14 12:21:20,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:21:20,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:21:20,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 149 transitions. [2024-06-14 12:21:20,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3983957219251337 [2024-06-14 12:21:20,722 INFO L175 Difference]: Start difference. First operand has 521 places, 487 transitions, 5444 flow. Second operand 11 states and 149 transitions. [2024-06-14 12:21:20,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 511 transitions, 7214 flow [2024-06-14 12:21:21,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 524 places, 511 transitions, 7038 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-14 12:21:21,898 INFO L231 Difference]: Finished difference. Result has 525 places, 493 transitions, 5816 flow [2024-06-14 12:21:21,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=5280, PETRI_DIFFERENCE_MINUEND_PLACES=514, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5816, PETRI_PLACES=525, PETRI_TRANSITIONS=493} [2024-06-14 12:21:21,898 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 492 predicate places. [2024-06-14 12:21:21,898 INFO L495 AbstractCegarLoop]: Abstraction has has 525 places, 493 transitions, 5816 flow [2024-06-14 12:21:21,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:21,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:21,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:21,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-14 12:21:21,899 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:21:21,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:21,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1523171126, now seen corresponding path program 28 times [2024-06-14 12:21:21,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:21,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951074274] [2024-06-14 12:21:21,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:21,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:21,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:22,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:22,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:22,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951074274] [2024-06-14 12:21:22,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951074274] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:22,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:22,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:21:22,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252919097] [2024-06-14 12:21:22,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:22,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:21:22,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:22,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:21:22,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:21:22,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:21:22,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 525 places, 493 transitions, 5816 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:22,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:22,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:21:22,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:23,560 INFO L124 PetriNetUnfolderBase]: 1139/2074 cut-off events. [2024-06-14 12:21:23,561 INFO L125 PetriNetUnfolderBase]: For 305292/305292 co-relation queries the response was YES. [2024-06-14 12:21:23,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16660 conditions, 2074 events. 1139/2074 cut-off events. For 305292/305292 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 12812 event pairs, 113 based on Foata normal form. 2/2076 useless extension candidates. Maximal degree in co-relation 16417. Up to 1172 conditions per place. [2024-06-14 12:21:23,594 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 327 selfloop transitions, 187 changer transitions 0/517 dead transitions. [2024-06-14 12:21:23,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 535 places, 517 transitions, 7822 flow [2024-06-14 12:21:23,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:21:23,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:21:23,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 152 transitions. [2024-06-14 12:21:23,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40641711229946526 [2024-06-14 12:21:23,601 INFO L175 Difference]: Start difference. First operand has 525 places, 493 transitions, 5816 flow. Second operand 11 states and 152 transitions. [2024-06-14 12:21:23,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 535 places, 517 transitions, 7822 flow [2024-06-14 12:21:24,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 517 transitions, 7642 flow, removed 41 selfloop flow, removed 7 redundant places. [2024-06-14 12:21:24,776 INFO L231 Difference]: Finished difference. Result has 529 places, 497 transitions, 6132 flow [2024-06-14 12:21:24,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=5658, PETRI_DIFFERENCE_MINUEND_PLACES=518, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6132, PETRI_PLACES=529, PETRI_TRANSITIONS=497} [2024-06-14 12:21:24,776 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 496 predicate places. [2024-06-14 12:21:24,777 INFO L495 AbstractCegarLoop]: Abstraction has has 529 places, 497 transitions, 6132 flow [2024-06-14 12:21:24,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:24,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:24,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:24,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-14 12:21:24,777 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:21:24,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:24,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1136685508, now seen corresponding path program 8 times [2024-06-14 12:21:24,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:24,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169975154] [2024-06-14 12:21:24,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:24,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:24,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:25,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:25,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:25,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169975154] [2024-06-14 12:21:25,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169975154] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:25,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:25,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:21:25,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515758612] [2024-06-14 12:21:25,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:25,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:21:25,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:25,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:21:25,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:21:25,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:21:25,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 529 places, 497 transitions, 6132 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:25,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:25,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:21:25,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:26,582 INFO L124 PetriNetUnfolderBase]: 1142/2075 cut-off events. [2024-06-14 12:21:26,582 INFO L125 PetriNetUnfolderBase]: For 296749/296749 co-relation queries the response was YES. [2024-06-14 12:21:26,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16976 conditions, 2075 events. 1142/2075 cut-off events. For 296749/296749 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 12772 event pairs, 162 based on Foata normal form. 1/2076 useless extension candidates. Maximal degree in co-relation 16732. Up to 1797 conditions per place. [2024-06-14 12:21:26,621 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 428 selfloop transitions, 80 changer transitions 0/511 dead transitions. [2024-06-14 12:21:26,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 539 places, 511 transitions, 7228 flow [2024-06-14 12:21:26,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:21:26,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:21:26,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-14 12:21:26,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3663101604278075 [2024-06-14 12:21:26,622 INFO L175 Difference]: Start difference. First operand has 529 places, 497 transitions, 6132 flow. Second operand 11 states and 137 transitions. [2024-06-14 12:21:26,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 539 places, 511 transitions, 7228 flow [2024-06-14 12:21:28,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 531 places, 511 transitions, 6861 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-14 12:21:28,060 INFO L231 Difference]: Finished difference. Result has 532 places, 499 transitions, 5989 flow [2024-06-14 12:21:28,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=5765, PETRI_DIFFERENCE_MINUEND_PLACES=521, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5989, PETRI_PLACES=532, PETRI_TRANSITIONS=499} [2024-06-14 12:21:28,060 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 499 predicate places. [2024-06-14 12:21:28,060 INFO L495 AbstractCegarLoop]: Abstraction has has 532 places, 499 transitions, 5989 flow [2024-06-14 12:21:28,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:28,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:28,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:28,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-14 12:21:28,061 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:21:28,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:28,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1136676828, now seen corresponding path program 29 times [2024-06-14 12:21:28,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:28,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557698543] [2024-06-14 12:21:28,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:28,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:28,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:28,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:28,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:28,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557698543] [2024-06-14 12:21:28,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557698543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:28,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:28,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:21:28,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221377206] [2024-06-14 12:21:28,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:28,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:21:28,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:28,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:21:28,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:21:29,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:21:29,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 532 places, 499 transitions, 5989 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:29,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:29,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:21:29,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:29,727 INFO L124 PetriNetUnfolderBase]: 1138/2075 cut-off events. [2024-06-14 12:21:29,728 INFO L125 PetriNetUnfolderBase]: For 286990/286990 co-relation queries the response was YES. [2024-06-14 12:21:29,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16395 conditions, 2075 events. 1138/2075 cut-off events. For 286990/286990 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 12848 event pairs, 119 based on Foata normal form. 2/2077 useless extension candidates. Maximal degree in co-relation 16151. Up to 1174 conditions per place. [2024-06-14 12:21:29,762 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 330 selfloop transitions, 185 changer transitions 0/518 dead transitions. [2024-06-14 12:21:29,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 542 places, 518 transitions, 7625 flow [2024-06-14 12:21:29,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:21:29,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:21:29,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 152 transitions. [2024-06-14 12:21:29,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40641711229946526 [2024-06-14 12:21:29,763 INFO L175 Difference]: Start difference. First operand has 532 places, 499 transitions, 5989 flow. Second operand 11 states and 152 transitions. [2024-06-14 12:21:29,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 542 places, 518 transitions, 7625 flow [2024-06-14 12:21:31,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 532 places, 518 transitions, 7388 flow, removed 40 selfloop flow, removed 10 redundant places. [2024-06-14 12:21:31,023 INFO L231 Difference]: Finished difference. Result has 533 places, 499 transitions, 6134 flow [2024-06-14 12:21:31,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=5756, PETRI_DIFFERENCE_MINUEND_PLACES=522, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6134, PETRI_PLACES=533, PETRI_TRANSITIONS=499} [2024-06-14 12:21:31,023 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 500 predicate places. [2024-06-14 12:21:31,023 INFO L495 AbstractCegarLoop]: Abstraction has has 533 places, 499 transitions, 6134 flow [2024-06-14 12:21:31,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:31,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:31,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:31,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-14 12:21:31,023 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:21:31,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:31,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1514828344, now seen corresponding path program 2 times [2024-06-14 12:21:31,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:31,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544186366] [2024-06-14 12:21:31,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:31,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:31,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:32,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:32,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:32,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544186366] [2024-06-14 12:21:32,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544186366] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:32,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:32,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:21:32,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316047326] [2024-06-14 12:21:32,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:32,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:21:32,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:32,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:21:32,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:21:32,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-06-14 12:21:32,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 499 transitions, 6134 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:32,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:32,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-06-14 12:21:32,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:32,968 INFO L124 PetriNetUnfolderBase]: 1094/2022 cut-off events. [2024-06-14 12:21:32,969 INFO L125 PetriNetUnfolderBase]: For 293303/293305 co-relation queries the response was YES. [2024-06-14 12:21:32,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16380 conditions, 2022 events. 1094/2022 cut-off events. For 293303/293305 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 12692 event pairs, 201 based on Foata normal form. 4/2022 useless extension candidates. Maximal degree in co-relation 16136. Up to 1713 conditions per place. [2024-06-14 12:21:33,002 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 413 selfloop transitions, 32 changer transitions 0/513 dead transitions. [2024-06-14 12:21:33,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 543 places, 513 transitions, 7086 flow [2024-06-14 12:21:33,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:21:33,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:21:33,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-14 12:21:33,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37433155080213903 [2024-06-14 12:21:33,003 INFO L175 Difference]: Start difference. First operand has 533 places, 499 transitions, 6134 flow. Second operand 11 states and 140 transitions. [2024-06-14 12:21:33,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 543 places, 513 transitions, 7086 flow [2024-06-14 12:21:34,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 532 places, 513 transitions, 6699 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-14 12:21:34,133 INFO L231 Difference]: Finished difference. Result has 533 places, 500 transitions, 5851 flow [2024-06-14 12:21:34,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=5747, PETRI_DIFFERENCE_MINUEND_PLACES=522, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5851, PETRI_PLACES=533, PETRI_TRANSITIONS=500} [2024-06-14 12:21:34,133 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 500 predicate places. [2024-06-14 12:21:34,133 INFO L495 AbstractCegarLoop]: Abstraction has has 533 places, 500 transitions, 5851 flow [2024-06-14 12:21:34,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:34,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:34,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:34,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-14 12:21:34,133 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:21:34,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:34,133 INFO L85 PathProgramCache]: Analyzing trace with hash 914801148, now seen corresponding path program 30 times [2024-06-14 12:21:34,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:34,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333373805] [2024-06-14 12:21:34,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:34,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:34,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:35,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:35,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:35,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333373805] [2024-06-14 12:21:35,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333373805] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:35,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:35,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:21:35,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705300657] [2024-06-14 12:21:35,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:35,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:21:35,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:35,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:21:35,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:21:35,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:21:35,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 500 transitions, 5851 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:35,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:35,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:21:35,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:35,784 INFO L124 PetriNetUnfolderBase]: 1158/2109 cut-off events. [2024-06-14 12:21:35,784 INFO L125 PetriNetUnfolderBase]: For 304556/304556 co-relation queries the response was YES. [2024-06-14 12:21:35,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16808 conditions, 2109 events. 1158/2109 cut-off events. For 304556/304556 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 13085 event pairs, 127 based on Foata normal form. 2/2111 useless extension candidates. Maximal degree in co-relation 16564. Up to 1197 conditions per place. [2024-06-14 12:21:35,827 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 350 selfloop transitions, 172 changer transitions 0/525 dead transitions. [2024-06-14 12:21:35,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 543 places, 525 transitions, 7883 flow [2024-06-14 12:21:35,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:21:35,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:21:35,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 155 transitions. [2024-06-14 12:21:35,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4144385026737968 [2024-06-14 12:21:35,828 INFO L175 Difference]: Start difference. First operand has 533 places, 500 transitions, 5851 flow. Second operand 11 states and 155 transitions. [2024-06-14 12:21:35,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 543 places, 525 transitions, 7883 flow [2024-06-14 12:21:37,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 534 places, 525 transitions, 7785 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-14 12:21:37,167 INFO L231 Difference]: Finished difference. Result has 535 places, 504 transitions, 6219 flow [2024-06-14 12:21:37,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=5759, PETRI_DIFFERENCE_MINUEND_PLACES=524, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6219, PETRI_PLACES=535, PETRI_TRANSITIONS=504} [2024-06-14 12:21:37,167 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 502 predicate places. [2024-06-14 12:21:37,167 INFO L495 AbstractCegarLoop]: Abstraction has has 535 places, 504 transitions, 6219 flow [2024-06-14 12:21:37,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:37,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:37,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:37,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-14 12:21:37,168 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:21:37,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:37,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1744824536, now seen corresponding path program 31 times [2024-06-14 12:21:37,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:37,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147406171] [2024-06-14 12:21:37,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:37,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:37,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:38,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:38,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:38,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147406171] [2024-06-14 12:21:38,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147406171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:38,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:38,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:21:38,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041369718] [2024-06-14 12:21:38,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:38,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:21:38,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:38,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:21:38,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:21:38,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:21:38,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 504 transitions, 6219 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:38,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:38,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:21:38,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:38,863 INFO L124 PetriNetUnfolderBase]: 1164/2125 cut-off events. [2024-06-14 12:21:38,863 INFO L125 PetriNetUnfolderBase]: For 306318/306318 co-relation queries the response was YES. [2024-06-14 12:21:38,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17232 conditions, 2125 events. 1164/2125 cut-off events. For 306318/306318 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 13249 event pairs, 117 based on Foata normal form. 2/2127 useless extension candidates. Maximal degree in co-relation 16987. Up to 1203 conditions per place. [2024-06-14 12:21:38,900 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 348 selfloop transitions, 176 changer transitions 0/527 dead transitions. [2024-06-14 12:21:38,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 545 places, 527 transitions, 8205 flow [2024-06-14 12:21:38,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:21:38,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:21:38,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 154 transitions. [2024-06-14 12:21:38,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4117647058823529 [2024-06-14 12:21:38,901 INFO L175 Difference]: Start difference. First operand has 535 places, 504 transitions, 6219 flow. Second operand 11 states and 154 transitions. [2024-06-14 12:21:38,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 545 places, 527 transitions, 8205 flow [2024-06-14 12:21:40,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 535 places, 527 transitions, 7637 flow, removed 36 selfloop flow, removed 10 redundant places. [2024-06-14 12:21:40,145 INFO L231 Difference]: Finished difference. Result has 536 places, 506 transitions, 6075 flow [2024-06-14 12:21:40,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=5669, PETRI_DIFFERENCE_MINUEND_PLACES=525, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6075, PETRI_PLACES=536, PETRI_TRANSITIONS=506} [2024-06-14 12:21:40,146 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 503 predicate places. [2024-06-14 12:21:40,146 INFO L495 AbstractCegarLoop]: Abstraction has has 536 places, 506 transitions, 6075 flow [2024-06-14 12:21:40,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:40,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:40,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:40,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-14 12:21:40,146 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:21:40,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:40,146 INFO L85 PathProgramCache]: Analyzing trace with hash 915040158, now seen corresponding path program 32 times [2024-06-14 12:21:40,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:40,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091353401] [2024-06-14 12:21:40,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:40,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:40,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:41,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:41,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:41,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091353401] [2024-06-14 12:21:41,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091353401] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:41,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:41,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:21:41,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863896382] [2024-06-14 12:21:41,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:41,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:21:41,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:41,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:21:41,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:21:41,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:21:41,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 506 transitions, 6075 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:41,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:41,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:21:41,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:41,756 INFO L124 PetriNetUnfolderBase]: 1160/2115 cut-off events. [2024-06-14 12:21:41,756 INFO L125 PetriNetUnfolderBase]: For 287716/287716 co-relation queries the response was YES. [2024-06-14 12:21:41,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16627 conditions, 2115 events. 1160/2115 cut-off events. For 287716/287716 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 13144 event pairs, 118 based on Foata normal form. 2/2117 useless extension candidates. Maximal degree in co-relation 16383. Up to 1200 conditions per place. [2024-06-14 12:21:41,791 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 343 selfloop transitions, 180 changer transitions 0/526 dead transitions. [2024-06-14 12:21:41,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 546 places, 526 transitions, 7737 flow [2024-06-14 12:21:41,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:21:41,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:21:41,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 152 transitions. [2024-06-14 12:21:41,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40641711229946526 [2024-06-14 12:21:41,792 INFO L175 Difference]: Start difference. First operand has 536 places, 506 transitions, 6075 flow. Second operand 11 states and 152 transitions. [2024-06-14 12:21:41,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 546 places, 526 transitions, 7737 flow [2024-06-14 12:21:42,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 537 places, 526 transitions, 7330 flow, removed 37 selfloop flow, removed 9 redundant places. [2024-06-14 12:21:42,905 INFO L231 Difference]: Finished difference. Result has 538 places, 506 transitions, 6040 flow [2024-06-14 12:21:42,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=5672, PETRI_DIFFERENCE_MINUEND_PLACES=527, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6040, PETRI_PLACES=538, PETRI_TRANSITIONS=506} [2024-06-14 12:21:42,906 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 505 predicate places. [2024-06-14 12:21:42,906 INFO L495 AbstractCegarLoop]: Abstraction has has 538 places, 506 transitions, 6040 flow [2024-06-14 12:21:42,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:42,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:42,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:42,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-14 12:21:42,906 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:21:42,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:42,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1144720398, now seen corresponding path program 33 times [2024-06-14 12:21:42,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:42,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268414181] [2024-06-14 12:21:42,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:42,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:42,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:43,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:43,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:43,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268414181] [2024-06-14 12:21:43,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268414181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:43,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:43,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:21:43,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386927146] [2024-06-14 12:21:43,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:43,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:21:43,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:43,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:21:43,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:21:43,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:21:43,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 506 transitions, 6040 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:43,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:43,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:21:43,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:44,510 INFO L124 PetriNetUnfolderBase]: 1166/2121 cut-off events. [2024-06-14 12:21:44,511 INFO L125 PetriNetUnfolderBase]: For 287372/287372 co-relation queries the response was YES. [2024-06-14 12:21:44,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16672 conditions, 2121 events. 1166/2121 cut-off events. For 287372/287372 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 13127 event pairs, 74 based on Foata normal form. 2/2123 useless extension candidates. Maximal degree in co-relation 16428. Up to 1206 conditions per place. [2024-06-14 12:21:44,546 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 309 selfloop transitions, 214 changer transitions 0/526 dead transitions. [2024-06-14 12:21:44,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 548 places, 526 transitions, 7734 flow [2024-06-14 12:21:44,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:21:44,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:21:44,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-14 12:21:44,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39572192513368987 [2024-06-14 12:21:44,547 INFO L175 Difference]: Start difference. First operand has 538 places, 506 transitions, 6040 flow. Second operand 11 states and 148 transitions. [2024-06-14 12:21:44,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 548 places, 526 transitions, 7734 flow [2024-06-14 12:21:45,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 538 places, 526 transitions, 7375 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-14 12:21:45,680 INFO L231 Difference]: Finished difference. Result has 539 places, 508 transitions, 6173 flow [2024-06-14 12:21:45,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=5689, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=212, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6173, PETRI_PLACES=539, PETRI_TRANSITIONS=508} [2024-06-14 12:21:45,680 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 506 predicate places. [2024-06-14 12:21:45,680 INFO L495 AbstractCegarLoop]: Abstraction has has 539 places, 508 transitions, 6173 flow [2024-06-14 12:21:45,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:45,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:45,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:45,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-14 12:21:45,681 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:21:45,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:45,681 INFO L85 PathProgramCache]: Analyzing trace with hash -69477032, now seen corresponding path program 9 times [2024-06-14 12:21:45,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:45,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770736705] [2024-06-14 12:21:45,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:45,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:45,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:46,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:46,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:46,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770736705] [2024-06-14 12:21:46,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770736705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:46,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:46,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:21:46,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389638593] [2024-06-14 12:21:46,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:46,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:21:46,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:46,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:21:46,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:21:46,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:21:46,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 539 places, 508 transitions, 6173 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:46,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:46,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:21:46,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:47,536 INFO L124 PetriNetUnfolderBase]: 1169/2122 cut-off events. [2024-06-14 12:21:47,536 INFO L125 PetriNetUnfolderBase]: For 279302/279302 co-relation queries the response was YES. [2024-06-14 12:21:47,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16835 conditions, 2122 events. 1169/2122 cut-off events. For 279302/279302 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 13104 event pairs, 160 based on Foata normal form. 1/2123 useless extension candidates. Maximal degree in co-relation 16591. Up to 1844 conditions per place. [2024-06-14 12:21:47,587 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 442 selfloop transitions, 77 changer transitions 0/522 dead transitions. [2024-06-14 12:21:47,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 549 places, 522 transitions, 7295 flow [2024-06-14 12:21:47,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:21:47,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:21:47,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-14 12:21:47,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3689839572192513 [2024-06-14 12:21:47,588 INFO L175 Difference]: Start difference. First operand has 539 places, 508 transitions, 6173 flow. Second operand 11 states and 138 transitions. [2024-06-14 12:21:47,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 549 places, 522 transitions, 7295 flow [2024-06-14 12:21:48,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 538 places, 522 transitions, 6782 flow, removed 19 selfloop flow, removed 11 redundant places. [2024-06-14 12:21:48,788 INFO L231 Difference]: Finished difference. Result has 539 places, 510 transitions, 5882 flow [2024-06-14 12:21:48,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=5660, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5882, PETRI_PLACES=539, PETRI_TRANSITIONS=510} [2024-06-14 12:21:48,788 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 506 predicate places. [2024-06-14 12:21:48,788 INFO L495 AbstractCegarLoop]: Abstraction has has 539 places, 510 transitions, 5882 flow [2024-06-14 12:21:48,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:48,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:48,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:48,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-14 12:21:48,789 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:21:48,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:48,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1751311286, now seen corresponding path program 34 times [2024-06-14 12:21:48,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:48,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076344449] [2024-06-14 12:21:48,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:48,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:48,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:49,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:49,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:49,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076344449] [2024-06-14 12:21:49,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076344449] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:49,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:49,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:21:49,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053598132] [2024-06-14 12:21:49,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:49,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:21:49,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:49,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:21:49,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:21:49,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:21:49,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 539 places, 510 transitions, 5882 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:49,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:49,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:21:49,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:50,354 INFO L124 PetriNetUnfolderBase]: 1165/2126 cut-off events. [2024-06-14 12:21:50,354 INFO L125 PetriNetUnfolderBase]: For 268888/268888 co-relation queries the response was YES. [2024-06-14 12:21:50,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16118 conditions, 2126 events. 1165/2126 cut-off events. For 268888/268888 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 13237 event pairs, 130 based on Foata normal form. 2/2128 useless extension candidates. Maximal degree in co-relation 15874. Up to 1208 conditions per place. [2024-06-14 12:21:50,390 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 337 selfloop transitions, 188 changer transitions 0/528 dead transitions. [2024-06-14 12:21:50,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 549 places, 528 transitions, 7274 flow [2024-06-14 12:21:50,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:21:50,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:21:50,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 149 transitions. [2024-06-14 12:21:50,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3983957219251337 [2024-06-14 12:21:50,391 INFO L175 Difference]: Start difference. First operand has 539 places, 510 transitions, 5882 flow. Second operand 11 states and 149 transitions. [2024-06-14 12:21:50,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 549 places, 528 transitions, 7274 flow [2024-06-14 12:21:51,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 540 places, 528 transitions, 7044 flow, removed 41 selfloop flow, removed 9 redundant places. [2024-06-14 12:21:51,495 INFO L231 Difference]: Finished difference. Result has 541 places, 510 transitions, 6038 flow [2024-06-14 12:21:51,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=5654, PETRI_DIFFERENCE_MINUEND_PLACES=530, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6038, PETRI_PLACES=541, PETRI_TRANSITIONS=510} [2024-06-14 12:21:51,495 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 508 predicate places. [2024-06-14 12:21:51,495 INFO L495 AbstractCegarLoop]: Abstraction has has 541 places, 510 transitions, 6038 flow [2024-06-14 12:21:51,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:51,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:51,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:51,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-14 12:21:51,496 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:21:51,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:51,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1144729078, now seen corresponding path program 10 times [2024-06-14 12:21:51,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:51,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740409420] [2024-06-14 12:21:51,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:51,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:51,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:52,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:52,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:52,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740409420] [2024-06-14 12:21:52,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740409420] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:52,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:52,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:21:52,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830945357] [2024-06-14 12:21:52,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:52,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:21:52,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:52,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:21:52,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:21:52,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:21:52,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 541 places, 510 transitions, 6038 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:52,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:52,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:21:52,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:53,429 INFO L124 PetriNetUnfolderBase]: 1168/2126 cut-off events. [2024-06-14 12:21:53,429 INFO L125 PetriNetUnfolderBase]: For 260993/260993 co-relation queries the response was YES. [2024-06-14 12:21:53,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16390 conditions, 2126 events. 1168/2126 cut-off events. For 260993/260993 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 13184 event pairs, 172 based on Foata normal form. 1/2127 useless extension candidates. Maximal degree in co-relation 16145. Up to 1843 conditions per place. [2024-06-14 12:21:53,465 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 436 selfloop transitions, 85 changer transitions 0/524 dead transitions. [2024-06-14 12:21:53,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 551 places, 524 transitions, 7164 flow [2024-06-14 12:21:53,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:21:53,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:21:53,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-14 12:21:53,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-14 12:21:53,466 INFO L175 Difference]: Start difference. First operand has 541 places, 510 transitions, 6038 flow. Second operand 11 states and 136 transitions. [2024-06-14 12:21:53,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 551 places, 524 transitions, 7164 flow [2024-06-14 12:21:54,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 537 places, 524 transitions, 6710 flow, removed 4 selfloop flow, removed 14 redundant places. [2024-06-14 12:21:54,546 INFO L231 Difference]: Finished difference. Result has 538 places, 512 transitions, 5822 flow [2024-06-14 12:21:54,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=5584, PETRI_DIFFERENCE_MINUEND_PLACES=527, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5822, PETRI_PLACES=538, PETRI_TRANSITIONS=512} [2024-06-14 12:21:54,546 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 505 predicate places. [2024-06-14 12:21:54,546 INFO L495 AbstractCegarLoop]: Abstraction has has 538 places, 512 transitions, 5822 flow [2024-06-14 12:21:54,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:54,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:54,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:54,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-14 12:21:54,546 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:21:54,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:54,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1514828716, now seen corresponding path program 11 times [2024-06-14 12:21:54,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:54,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715723401] [2024-06-14 12:21:54,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:54,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:54,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:55,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:55,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:55,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715723401] [2024-06-14 12:21:55,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715723401] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:55,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:55,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:21:55,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807616156] [2024-06-14 12:21:55,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:55,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:21:55,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:55,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:21:55,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:21:55,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:21:55,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 512 transitions, 5822 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:55,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:55,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:21:55,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:56,294 INFO L124 PetriNetUnfolderBase]: 1179/2145 cut-off events. [2024-06-14 12:21:56,294 INFO L125 PetriNetUnfolderBase]: For 269094/269094 co-relation queries the response was YES. [2024-06-14 12:21:56,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16379 conditions, 2145 events. 1179/2145 cut-off events. For 269094/269094 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 13314 event pairs, 172 based on Foata normal form. 1/2146 useless extension candidates. Maximal degree in co-relation 16135. Up to 1821 conditions per place. [2024-06-14 12:21:56,329 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 412 selfloop transitions, 116 changer transitions 0/531 dead transitions. [2024-06-14 12:21:56,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 548 places, 531 transitions, 7300 flow [2024-06-14 12:21:56,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:21:56,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:21:56,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-14 12:21:56,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3663101604278075 [2024-06-14 12:21:56,330 INFO L175 Difference]: Start difference. First operand has 538 places, 512 transitions, 5822 flow. Second operand 11 states and 137 transitions. [2024-06-14 12:21:56,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 548 places, 531 transitions, 7300 flow [2024-06-14 12:21:57,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 539 places, 531 transitions, 7076 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-14 12:21:57,444 INFO L231 Difference]: Finished difference. Result has 540 places, 518 transitions, 5974 flow [2024-06-14 12:21:57,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=5608, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5974, PETRI_PLACES=540, PETRI_TRANSITIONS=518} [2024-06-14 12:21:57,444 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 507 predicate places. [2024-06-14 12:21:57,444 INFO L495 AbstractCegarLoop]: Abstraction has has 540 places, 518 transitions, 5974 flow [2024-06-14 12:21:57,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:57,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:57,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:57,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-14 12:21:57,445 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:21:57,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:57,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1515127556, now seen corresponding path program 35 times [2024-06-14 12:21:57,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:57,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774499414] [2024-06-14 12:21:57,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:57,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:57,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:58,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:58,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:58,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774499414] [2024-06-14 12:21:58,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774499414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:58,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:58,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:21:58,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802870768] [2024-06-14 12:21:58,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:58,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:21:58,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:58,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:21:58,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:21:58,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:21:58,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 540 places, 518 transitions, 5974 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:58,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:58,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:21:58,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:59,016 INFO L124 PetriNetUnfolderBase]: 1185/2157 cut-off events. [2024-06-14 12:21:59,017 INFO L125 PetriNetUnfolderBase]: For 278075/278075 co-relation queries the response was YES. [2024-06-14 12:21:59,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16484 conditions, 2157 events. 1185/2157 cut-off events. For 278075/278075 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 13432 event pairs, 74 based on Foata normal form. 2/2159 useless extension candidates. Maximal degree in co-relation 16239. Up to 1237 conditions per place. [2024-06-14 12:21:59,052 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 321 selfloop transitions, 214 changer transitions 0/538 dead transitions. [2024-06-14 12:21:59,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 538 transitions, 7430 flow [2024-06-14 12:21:59,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:21:59,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:21:59,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 149 transitions. [2024-06-14 12:21:59,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3983957219251337 [2024-06-14 12:21:59,053 INFO L175 Difference]: Start difference. First operand has 540 places, 518 transitions, 5974 flow. Second operand 11 states and 149 transitions. [2024-06-14 12:21:59,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 538 transitions, 7430 flow [2024-06-14 12:22:00,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 542 places, 538 transitions, 7244 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-14 12:22:00,067 INFO L231 Difference]: Finished difference. Result has 543 places, 520 transitions, 6268 flow [2024-06-14 12:22:00,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=5788, PETRI_DIFFERENCE_MINUEND_PLACES=532, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=212, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6268, PETRI_PLACES=543, PETRI_TRANSITIONS=520} [2024-06-14 12:22:00,067 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 510 predicate places. [2024-06-14 12:22:00,067 INFO L495 AbstractCegarLoop]: Abstraction has has 543 places, 520 transitions, 6268 flow [2024-06-14 12:22:00,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:00,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:22:00,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:22:00,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-14 12:22:00,068 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:22:00,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:22:00,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1514838946, now seen corresponding path program 12 times [2024-06-14 12:22:00,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:22:00,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468042962] [2024-06-14 12:22:00,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:22:00,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:22:00,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:22:01,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:22:01,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:22:01,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468042962] [2024-06-14 12:22:01,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468042962] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:22:01,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:22:01,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:22:01,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192268771] [2024-06-14 12:22:01,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:22:01,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:22:01,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:22:01,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:22:01,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:22:01,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:22:01,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 520 transitions, 6268 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:01,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:22:01,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:22:01,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:22:02,286 INFO L124 PetriNetUnfolderBase]: 1183/2150 cut-off events. [2024-06-14 12:22:02,286 INFO L125 PetriNetUnfolderBase]: For 265253/265253 co-relation queries the response was YES. [2024-06-14 12:22:02,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16742 conditions, 2150 events. 1183/2150 cut-off events. For 265253/265253 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 13364 event pairs, 164 based on Foata normal form. 1/2151 useless extension candidates. Maximal degree in co-relation 16496. Up to 1868 conditions per place. [2024-06-14 12:22:02,325 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 437 selfloop transitions, 92 changer transitions 0/532 dead transitions. [2024-06-14 12:22:02,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 553 places, 532 transitions, 7354 flow [2024-06-14 12:22:02,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:22:02,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:22:02,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-14 12:22:02,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3609625668449198 [2024-06-14 12:22:02,326 INFO L175 Difference]: Start difference. First operand has 543 places, 520 transitions, 6268 flow. Second operand 11 states and 135 transitions. [2024-06-14 12:22:02,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 553 places, 532 transitions, 7354 flow [2024-06-14 12:22:03,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 532 transitions, 6887 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-14 12:22:03,492 INFO L231 Difference]: Finished difference. Result has 545 places, 520 transitions, 5993 flow [2024-06-14 12:22:03,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=5801, PETRI_DIFFERENCE_MINUEND_PLACES=534, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5993, PETRI_PLACES=545, PETRI_TRANSITIONS=520} [2024-06-14 12:22:03,492 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 512 predicate places. [2024-06-14 12:22:03,493 INFO L495 AbstractCegarLoop]: Abstraction has has 545 places, 520 transitions, 5993 flow [2024-06-14 12:22:03,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:03,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:22:03,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:22:03,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-14 12:22:03,493 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:22:03,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:22:03,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1514839256, now seen corresponding path program 36 times [2024-06-14 12:22:03,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:22:03,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404506807] [2024-06-14 12:22:03,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:22:03,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:22:03,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:22:04,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:22:04,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:22:04,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404506807] [2024-06-14 12:22:04,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404506807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:22:04,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:22:04,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:22:04,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265807317] [2024-06-14 12:22:04,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:22:04,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:22:04,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:22:04,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:22:04,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:22:04,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:22:04,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 520 transitions, 5993 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:04,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:22:04,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:22:04,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:22:05,106 INFO L124 PetriNetUnfolderBase]: 1179/2148 cut-off events. [2024-06-14 12:22:05,106 INFO L125 PetriNetUnfolderBase]: For 255222/255222 co-relation queries the response was YES. [2024-06-14 12:22:05,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16034 conditions, 2148 events. 1179/2148 cut-off events. For 255222/255222 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 13390 event pairs, 59 based on Foata normal form. 2/2150 useless extension candidates. Maximal degree in co-relation 15788. Up to 1231 conditions per place. [2024-06-14 12:22:05,142 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 289 selfloop transitions, 244 changer transitions 0/536 dead transitions. [2024-06-14 12:22:05,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 555 places, 536 transitions, 7127 flow [2024-06-14 12:22:05,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:22:05,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:22:05,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-14 12:22:05,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3877005347593583 [2024-06-14 12:22:05,143 INFO L175 Difference]: Start difference. First operand has 545 places, 520 transitions, 5993 flow. Second operand 11 states and 145 transitions. [2024-06-14 12:22:05,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 555 places, 536 transitions, 7127 flow [2024-06-14 12:22:06,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 536 transitions, 6862 flow, removed 24 selfloop flow, removed 10 redundant places. [2024-06-14 12:22:06,246 INFO L231 Difference]: Finished difference. Result has 546 places, 520 transitions, 6224 flow [2024-06-14 12:22:06,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=5728, PETRI_DIFFERENCE_MINUEND_PLACES=535, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=244, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6224, PETRI_PLACES=546, PETRI_TRANSITIONS=520} [2024-06-14 12:22:06,246 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 513 predicate places. [2024-06-14 12:22:06,247 INFO L495 AbstractCegarLoop]: Abstraction has has 546 places, 520 transitions, 6224 flow [2024-06-14 12:22:06,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:06,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:22:06,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:22:06,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-14 12:22:06,247 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:22:06,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:22:06,250 INFO L85 PathProgramCache]: Analyzing trace with hash 2145261978, now seen corresponding path program 16 times [2024-06-14 12:22:06,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:22:06,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839242225] [2024-06-14 12:22:06,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:22:06,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:22:06,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:22:07,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:22:07,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:22:07,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839242225] [2024-06-14 12:22:07,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839242225] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:22:07,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:22:07,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:22:07,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857955735] [2024-06-14 12:22:07,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:22:07,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:22:07,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:22:07,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:22:07,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:22:07,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-06-14 12:22:07,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 546 places, 520 transitions, 6224 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:07,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:22:07,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-06-14 12:22:07,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:22:08,026 INFO L124 PetriNetUnfolderBase]: 1072/2033 cut-off events. [2024-06-14 12:22:08,026 INFO L125 PetriNetUnfolderBase]: For 245403/245446 co-relation queries the response was YES. [2024-06-14 12:22:08,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15409 conditions, 2033 events. 1072/2033 cut-off events. For 245403/245446 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 13261 event pairs, 100 based on Foata normal form. 29/2030 useless extension candidates. Maximal degree in co-relation 15162. Up to 1636 conditions per place. [2024-06-14 12:22:08,058 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 426 selfloop transitions, 62 changer transitions 0/532 dead transitions. [2024-06-14 12:22:08,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 555 places, 532 transitions, 7238 flow [2024-06-14 12:22:08,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:22:08,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:22:08,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-14 12:22:08,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3911764705882353 [2024-06-14 12:22:08,059 INFO L175 Difference]: Start difference. First operand has 546 places, 520 transitions, 6224 flow. Second operand 10 states and 133 transitions. [2024-06-14 12:22:08,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 555 places, 532 transitions, 7238 flow [2024-06-14 12:22:09,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 543 places, 532 transitions, 6715 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-14 12:22:09,034 INFO L231 Difference]: Finished difference. Result has 545 places, 522 transitions, 5850 flow [2024-06-14 12:22:09,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=5701, PETRI_DIFFERENCE_MINUEND_PLACES=534, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5850, PETRI_PLACES=545, PETRI_TRANSITIONS=522} [2024-06-14 12:22:09,034 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 512 predicate places. [2024-06-14 12:22:09,034 INFO L495 AbstractCegarLoop]: Abstraction has has 545 places, 522 transitions, 5850 flow [2024-06-14 12:22:09,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:09,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:22:09,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:22:09,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-14 12:22:09,034 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:22:09,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:22:09,035 INFO L85 PathProgramCache]: Analyzing trace with hash -2143033870, now seen corresponding path program 37 times [2024-06-14 12:22:09,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:22:09,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382676521] [2024-06-14 12:22:09,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:22:09,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:22:09,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:22:09,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:22:09,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:22:09,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382676521] [2024-06-14 12:22:09,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382676521] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:22:09,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:22:09,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:22:09,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303514326] [2024-06-14 12:22:09,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:22:09,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:22:09,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:22:09,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:22:09,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:22:10,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:22:10,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 522 transitions, 5850 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:10,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:22:10,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:22:10,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:22:10,718 INFO L124 PetriNetUnfolderBase]: 1207/2194 cut-off events. [2024-06-14 12:22:10,718 INFO L125 PetriNetUnfolderBase]: For 286961/286961 co-relation queries the response was YES. [2024-06-14 12:22:10,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16894 conditions, 2194 events. 1207/2194 cut-off events. For 286961/286961 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 13706 event pairs, 125 based on Foata normal form. 2/2196 useless extension candidates. Maximal degree in co-relation 16646. Up to 989 conditions per place. [2024-06-14 12:22:10,751 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 333 selfloop transitions, 213 changer transitions 0/549 dead transitions. [2024-06-14 12:22:10,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 555 places, 549 transitions, 8024 flow [2024-06-14 12:22:10,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:22:10,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:22:10,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 156 transitions. [2024-06-14 12:22:10,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41711229946524064 [2024-06-14 12:22:10,752 INFO L175 Difference]: Start difference. First operand has 545 places, 522 transitions, 5850 flow. Second operand 11 states and 156 transitions. [2024-06-14 12:22:10,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 555 places, 549 transitions, 8024 flow [2024-06-14 12:22:11,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 547 places, 549 transitions, 7789 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-14 12:22:11,857 INFO L231 Difference]: Finished difference. Result has 548 places, 530 transitions, 6234 flow [2024-06-14 12:22:11,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=5615, PETRI_DIFFERENCE_MINUEND_PLACES=537, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=207, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6234, PETRI_PLACES=548, PETRI_TRANSITIONS=530} [2024-06-14 12:22:11,857 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 515 predicate places. [2024-06-14 12:22:11,857 INFO L495 AbstractCegarLoop]: Abstraction has has 548 places, 530 transitions, 6234 flow [2024-06-14 12:22:11,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:11,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:22:11,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:22:11,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-14 12:22:11,858 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:22:11,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:22:11,858 INFO L85 PathProgramCache]: Analyzing trace with hash -708921454, now seen corresponding path program 13 times [2024-06-14 12:22:11,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:22:11,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976209782] [2024-06-14 12:22:11,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:22:11,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:22:11,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:22:13,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:22:13,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:22:13,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976209782] [2024-06-14 12:22:13,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976209782] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:22:13,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:22:13,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:22:13,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264140968] [2024-06-14 12:22:13,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:22:13,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:22:13,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:22:13,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:22:13,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:22:13,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:22:13,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 548 places, 530 transitions, 6234 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:13,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:22:13,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:22:13,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:22:13,937 INFO L124 PetriNetUnfolderBase]: 1215/2208 cut-off events. [2024-06-14 12:22:13,937 INFO L125 PetriNetUnfolderBase]: For 291725/291725 co-relation queries the response was YES. [2024-06-14 12:22:13,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17520 conditions, 2208 events. 1215/2208 cut-off events. For 291725/291725 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 13809 event pairs, 154 based on Foata normal form. 1/2209 useless extension candidates. Maximal degree in co-relation 17271. Up to 1812 conditions per place. [2024-06-14 12:22:13,976 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 415 selfloop transitions, 128 changer transitions 0/546 dead transitions. [2024-06-14 12:22:13,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 559 places, 546 transitions, 7726 flow [2024-06-14 12:22:13,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:22:13,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:22:13,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-14 12:22:13,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3700980392156863 [2024-06-14 12:22:13,977 INFO L175 Difference]: Start difference. First operand has 548 places, 530 transitions, 6234 flow. Second operand 12 states and 151 transitions. [2024-06-14 12:22:13,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 559 places, 546 transitions, 7726 flow [2024-06-14 12:22:15,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 553 places, 546 transitions, 7320 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-14 12:22:15,176 INFO L231 Difference]: Finished difference. Result has 554 places, 534 transitions, 6206 flow [2024-06-14 12:22:15,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=5828, PETRI_DIFFERENCE_MINUEND_PLACES=542, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6206, PETRI_PLACES=554, PETRI_TRANSITIONS=534} [2024-06-14 12:22:15,176 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 521 predicate places. [2024-06-14 12:22:15,176 INFO L495 AbstractCegarLoop]: Abstraction has has 554 places, 534 transitions, 6206 flow [2024-06-14 12:22:15,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:15,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:22:15,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:22:15,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-14 12:22:15,177 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:22:15,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:22:15,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1675535596, now seen corresponding path program 38 times [2024-06-14 12:22:15,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:22:15,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911945398] [2024-06-14 12:22:15,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:22:15,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:22:15,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:22:16,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:22:16,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:22:16,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911945398] [2024-06-14 12:22:16,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911945398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:22:16,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:22:16,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:22:16,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42028803] [2024-06-14 12:22:16,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:22:16,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:22:16,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:22:16,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:22:16,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:22:16,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:22:16,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 534 transitions, 6206 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:16,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:22:16,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:22:16,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:22:16,847 INFO L124 PetriNetUnfolderBase]: 1231/2239 cut-off events. [2024-06-14 12:22:16,847 INFO L125 PetriNetUnfolderBase]: For 322757/322757 co-relation queries the response was YES. [2024-06-14 12:22:16,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17793 conditions, 2239 events. 1231/2239 cut-off events. For 322757/322757 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 14016 event pairs, 80 based on Foata normal form. 2/2241 useless extension candidates. Maximal degree in co-relation 17543. Up to 1017 conditions per place. [2024-06-14 12:22:16,883 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 282 selfloop transitions, 269 changer transitions 0/554 dead transitions. [2024-06-14 12:22:16,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 564 places, 554 transitions, 8010 flow [2024-06-14 12:22:16,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:22:16,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:22:16,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 150 transitions. [2024-06-14 12:22:16,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40106951871657753 [2024-06-14 12:22:16,884 INFO L175 Difference]: Start difference. First operand has 554 places, 534 transitions, 6206 flow. Second operand 11 states and 150 transitions. [2024-06-14 12:22:16,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 564 places, 554 transitions, 8010 flow [2024-06-14 12:22:18,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 556 places, 554 transitions, 7789 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-14 12:22:18,232 INFO L231 Difference]: Finished difference. Result has 557 places, 538 transitions, 6616 flow [2024-06-14 12:22:18,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=5985, PETRI_DIFFERENCE_MINUEND_PLACES=546, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=534, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=265, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6616, PETRI_PLACES=557, PETRI_TRANSITIONS=538} [2024-06-14 12:22:18,233 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 524 predicate places. [2024-06-14 12:22:18,233 INFO L495 AbstractCegarLoop]: Abstraction has has 557 places, 538 transitions, 6616 flow [2024-06-14 12:22:18,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:18,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:22:18,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:22:18,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-14 12:22:18,233 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:22:18,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:22:18,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1675238926, now seen corresponding path program 39 times [2024-06-14 12:22:18,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:22:18,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638103623] [2024-06-14 12:22:18,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:22:18,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:22:18,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:22:19,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:22:19,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:22:19,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638103623] [2024-06-14 12:22:19,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638103623] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:22:19,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:22:19,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:22:19,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246970750] [2024-06-14 12:22:19,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:22:19,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:22:19,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:22:19,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:22:19,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:22:19,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:22:19,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 557 places, 538 transitions, 6616 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:19,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:22:19,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:22:19,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:22:19,942 INFO L124 PetriNetUnfolderBase]: 1247/2265 cut-off events. [2024-06-14 12:22:19,942 INFO L125 PetriNetUnfolderBase]: For 347510/347510 co-relation queries the response was YES. [2024-06-14 12:22:19,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18865 conditions, 2265 events. 1247/2265 cut-off events. For 347510/347510 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 14196 event pairs, 83 based on Foata normal form. 2/2267 useless extension candidates. Maximal degree in co-relation 18613. Up to 1032 conditions per place. [2024-06-14 12:22:19,977 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 287 selfloop transitions, 270 changer transitions 0/560 dead transitions. [2024-06-14 12:22:19,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 567 places, 560 transitions, 8730 flow [2024-06-14 12:22:19,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:22:19,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:22:19,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 154 transitions. [2024-06-14 12:22:19,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4117647058823529 [2024-06-14 12:22:19,978 INFO L175 Difference]: Start difference. First operand has 557 places, 538 transitions, 6616 flow. Second operand 11 states and 154 transitions. [2024-06-14 12:22:19,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 567 places, 560 transitions, 8730 flow [2024-06-14 12:22:21,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 560 places, 560 transitions, 8323 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-14 12:22:21,622 INFO L231 Difference]: Finished difference. Result has 561 places, 542 transitions, 6850 flow [2024-06-14 12:22:21,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6221, PETRI_DIFFERENCE_MINUEND_PLACES=550, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=266, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6850, PETRI_PLACES=561, PETRI_TRANSITIONS=542} [2024-06-14 12:22:21,622 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 528 predicate places. [2024-06-14 12:22:21,622 INFO L495 AbstractCegarLoop]: Abstraction has has 561 places, 542 transitions, 6850 flow [2024-06-14 12:22:21,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:21,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:22:21,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:22:21,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-14 12:22:21,623 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:22:21,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:22:21,623 INFO L85 PathProgramCache]: Analyzing trace with hash -2143025500, now seen corresponding path program 40 times [2024-06-14 12:22:21,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:22:21,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570285699] [2024-06-14 12:22:21,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:22:21,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:22:21,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:22:22,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:22:22,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:22:22,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570285699] [2024-06-14 12:22:22,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570285699] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:22:22,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:22:22,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:22:22,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126098998] [2024-06-14 12:22:22,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:22:22,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:22:22,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:22:22,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:22:22,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:22:22,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:22:22,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 561 places, 542 transitions, 6850 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:22,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:22:22,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:22:22,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:22:23,354 INFO L124 PetriNetUnfolderBase]: 1243/2263 cut-off events. [2024-06-14 12:22:23,355 INFO L125 PetriNetUnfolderBase]: For 334675/334675 co-relation queries the response was YES. [2024-06-14 12:22:23,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18637 conditions, 2263 events. 1243/2263 cut-off events. For 334675/334675 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 14206 event pairs, 142 based on Foata normal form. 2/2265 useless extension candidates. Maximal degree in co-relation 18384. Up to 1029 conditions per place. [2024-06-14 12:22:23,388 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 334 selfloop transitions, 223 changer transitions 0/560 dead transitions. [2024-06-14 12:22:23,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 571 places, 560 transitions, 8610 flow [2024-06-14 12:22:23,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:22:23,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:22:23,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 154 transitions. [2024-06-14 12:22:23,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4117647058823529 [2024-06-14 12:22:23,389 INFO L175 Difference]: Start difference. First operand has 561 places, 542 transitions, 6850 flow. Second operand 11 states and 154 transitions. [2024-06-14 12:22:23,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 571 places, 560 transitions, 8610 flow [2024-06-14 12:22:24,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 564 places, 560 transitions, 8029 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-14 12:22:24,851 INFO L231 Difference]: Finished difference. Result has 565 places, 542 transitions, 6720 flow [2024-06-14 12:22:24,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6269, PETRI_DIFFERENCE_MINUEND_PLACES=554, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=223, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6720, PETRI_PLACES=565, PETRI_TRANSITIONS=542} [2024-06-14 12:22:24,851 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 532 predicate places. [2024-06-14 12:22:24,851 INFO L495 AbstractCegarLoop]: Abstraction has has 565 places, 542 transitions, 6720 flow [2024-06-14 12:22:24,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:24,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:22:24,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:22:24,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-14 12:22:24,852 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:22:24,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:22:24,852 INFO L85 PathProgramCache]: Analyzing trace with hash -2143025190, now seen corresponding path program 14 times [2024-06-14 12:22:24,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:22:24,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509612272] [2024-06-14 12:22:24,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:22:24,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:22:24,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:22:26,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:22:26,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:22:26,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509612272] [2024-06-14 12:22:26,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509612272] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:22:26,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:22:26,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:22:26,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374392660] [2024-06-14 12:22:26,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:22:26,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:22:26,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:22:26,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:22:26,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:22:26,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:22:26,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 565 places, 542 transitions, 6720 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:26,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:22:26,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:22:26,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:22:26,902 INFO L124 PetriNetUnfolderBase]: 1246/2263 cut-off events. [2024-06-14 12:22:26,902 INFO L125 PetriNetUnfolderBase]: For 329133/329133 co-relation queries the response was YES. [2024-06-14 12:22:26,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18545 conditions, 2263 events. 1246/2263 cut-off events. For 329133/329133 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 14193 event pairs, 153 based on Foata normal form. 1/2264 useless extension candidates. Maximal degree in co-relation 18291. Up to 1872 conditions per place. [2024-06-14 12:22:26,937 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 440 selfloop transitions, 111 changer transitions 0/554 dead transitions. [2024-06-14 12:22:26,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 575 places, 554 transitions, 7904 flow [2024-06-14 12:22:26,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:22:26,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:22:26,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-14 12:22:26,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37433155080213903 [2024-06-14 12:22:26,938 INFO L175 Difference]: Start difference. First operand has 565 places, 542 transitions, 6720 flow. Second operand 11 states and 140 transitions. [2024-06-14 12:22:26,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 575 places, 554 transitions, 7904 flow [2024-06-14 12:22:28,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 566 places, 554 transitions, 7461 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-14 12:22:28,316 INFO L231 Difference]: Finished difference. Result has 567 places, 544 transitions, 6568 flow [2024-06-14 12:22:28,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6277, PETRI_DIFFERENCE_MINUEND_PLACES=556, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6568, PETRI_PLACES=567, PETRI_TRANSITIONS=544} [2024-06-14 12:22:28,317 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 534 predicate places. [2024-06-14 12:22:28,317 INFO L495 AbstractCegarLoop]: Abstraction has has 567 places, 544 transitions, 6568 flow [2024-06-14 12:22:28,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:28,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:22:28,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:22:28,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-14 12:22:28,317 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:22:28,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:22:28,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1675228014, now seen corresponding path program 3 times [2024-06-14 12:22:28,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:22:28,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058299966] [2024-06-14 12:22:28,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:22:28,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:22:28,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:22:29,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:22:29,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:22:29,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058299966] [2024-06-14 12:22:29,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058299966] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:22:29,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:22:29,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:22:29,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377747643] [2024-06-14 12:22:29,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:22:29,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:22:29,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:22:29,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:22:29,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:22:29,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-06-14 12:22:29,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 567 places, 544 transitions, 6568 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:29,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:22:29,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-06-14 12:22:29,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:22:30,409 INFO L124 PetriNetUnfolderBase]: 1195/2211 cut-off events. [2024-06-14 12:22:30,409 INFO L125 PetriNetUnfolderBase]: For 349036/349038 co-relation queries the response was YES. [2024-06-14 12:22:30,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18011 conditions, 2211 events. 1195/2211 cut-off events. For 349036/349038 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 14139 event pairs, 215 based on Foata normal form. 4/2211 useless extension candidates. Maximal degree in co-relation 17756. Up to 1836 conditions per place. [2024-06-14 12:22:30,449 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 432 selfloop transitions, 48 changer transitions 0/556 dead transitions. [2024-06-14 12:22:30,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 577 places, 556 transitions, 7584 flow [2024-06-14 12:22:30,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:22:30,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:22:30,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-14 12:22:30,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38235294117647056 [2024-06-14 12:22:30,450 INFO L175 Difference]: Start difference. First operand has 567 places, 544 transitions, 6568 flow. Second operand 11 states and 143 transitions. [2024-06-14 12:22:30,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 577 places, 556 transitions, 7584 flow [2024-06-14 12:22:32,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 568 places, 556 transitions, 7309 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-14 12:22:32,127 INFO L231 Difference]: Finished difference. Result has 569 places, 545 transitions, 6427 flow [2024-06-14 12:22:32,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6293, PETRI_DIFFERENCE_MINUEND_PLACES=558, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=496, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6427, PETRI_PLACES=569, PETRI_TRANSITIONS=545} [2024-06-14 12:22:32,128 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 536 predicate places. [2024-06-14 12:22:32,128 INFO L495 AbstractCegarLoop]: Abstraction has has 569 places, 545 transitions, 6427 flow [2024-06-14 12:22:32,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:32,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:22:32,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:22:32,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-14 12:22:32,128 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:22:32,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:22:32,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1675526916, now seen corresponding path program 15 times [2024-06-14 12:22:32,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:22:32,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364873323] [2024-06-14 12:22:32,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:22:32,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:22:32,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:22:33,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:22:33,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:22:33,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364873323] [2024-06-14 12:22:33,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364873323] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:22:33,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:22:33,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:22:33,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649422652] [2024-06-14 12:22:33,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:22:33,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:22:33,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:22:33,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:22:33,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:22:33,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:22:33,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 569 places, 545 transitions, 6427 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:33,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:22:33,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:22:33,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:22:34,099 INFO L124 PetriNetUnfolderBase]: 1248/2268 cut-off events. [2024-06-14 12:22:34,100 INFO L125 PetriNetUnfolderBase]: For 327092/327092 co-relation queries the response was YES. [2024-06-14 12:22:34,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18051 conditions, 2268 events. 1248/2268 cut-off events. For 327092/327092 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 14240 event pairs, 153 based on Foata normal form. 1/2269 useless extension candidates. Maximal degree in co-relation 17795. Up to 1877 conditions per place. [2024-06-14 12:22:34,139 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 427 selfloop transitions, 125 changer transitions 0/555 dead transitions. [2024-06-14 12:22:34,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 579 places, 555 transitions, 7553 flow [2024-06-14 12:22:34,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:22:34,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:22:34,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-14 12:22:34,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3689839572192513 [2024-06-14 12:22:34,141 INFO L175 Difference]: Start difference. First operand has 569 places, 545 transitions, 6427 flow. Second operand 11 states and 138 transitions. [2024-06-14 12:22:34,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 579 places, 555 transitions, 7553 flow [2024-06-14 12:22:35,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 570 places, 555 transitions, 7389 flow, removed 35 selfloop flow, removed 9 redundant places. [2024-06-14 12:22:35,709 INFO L231 Difference]: Finished difference. Result has 571 places, 545 transitions, 6518 flow [2024-06-14 12:22:35,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6263, PETRI_DIFFERENCE_MINUEND_PLACES=560, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6518, PETRI_PLACES=571, PETRI_TRANSITIONS=545} [2024-06-14 12:22:35,710 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 538 predicate places. [2024-06-14 12:22:35,710 INFO L495 AbstractCegarLoop]: Abstraction has has 571 places, 545 transitions, 6518 flow [2024-06-14 12:22:35,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:35,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:22:35,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:22:35,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-14 12:22:35,710 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:22:35,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:22:35,710 INFO L85 PathProgramCache]: Analyzing trace with hash -134495352, now seen corresponding path program 41 times [2024-06-14 12:22:35,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:22:35,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159434675] [2024-06-14 12:22:35,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:22:35,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:22:35,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:22:36,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:22:36,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:22:36,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159434675] [2024-06-14 12:22:36,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159434675] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:22:36,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:22:36,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:22:36,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895266579] [2024-06-14 12:22:36,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:22:36,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:22:36,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:22:36,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:22:36,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:22:36,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:22:36,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 571 places, 545 transitions, 6518 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:36,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:22:36,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:22:36,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:22:37,480 INFO L124 PetriNetUnfolderBase]: 1264/2297 cut-off events. [2024-06-14 12:22:37,480 INFO L125 PetriNetUnfolderBase]: For 361631/361631 co-relation queries the response was YES. [2024-06-14 12:22:37,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18630 conditions, 2297 events. 1264/2297 cut-off events. For 361631/361631 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 14421 event pairs, 142 based on Foata normal form. 2/2299 useless extension candidates. Maximal degree in co-relation 18373. Up to 1054 conditions per place. [2024-06-14 12:22:37,519 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 344 selfloop transitions, 221 changer transitions 0/568 dead transitions. [2024-06-14 12:22:37,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 581 places, 568 transitions, 8682 flow [2024-06-14 12:22:37,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:22:37,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:22:37,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 158 transitions. [2024-06-14 12:22:37,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42245989304812837 [2024-06-14 12:22:37,520 INFO L175 Difference]: Start difference. First operand has 571 places, 545 transitions, 6518 flow. Second operand 11 states and 158 transitions. [2024-06-14 12:22:37,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 581 places, 568 transitions, 8682 flow [2024-06-14 12:22:39,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 571 places, 568 transitions, 8427 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-14 12:22:39,162 INFO L231 Difference]: Finished difference. Result has 572 places, 549 transitions, 6798 flow [2024-06-14 12:22:39,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6263, PETRI_DIFFERENCE_MINUEND_PLACES=561, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=217, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6798, PETRI_PLACES=572, PETRI_TRANSITIONS=549} [2024-06-14 12:22:39,163 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 539 predicate places. [2024-06-14 12:22:39,163 INFO L495 AbstractCegarLoop]: Abstraction has has 572 places, 549 transitions, 6798 flow [2024-06-14 12:22:39,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:39,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:22:39,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:22:39,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-14 12:22:39,163 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:22:39,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:22:39,163 INFO L85 PathProgramCache]: Analyzing trace with hash 2145446676, now seen corresponding path program 42 times [2024-06-14 12:22:39,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:22:39,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133022629] [2024-06-14 12:22:39,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:22:39,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:22:39,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:22:40,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:22:40,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:22:40,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133022629] [2024-06-14 12:22:40,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133022629] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:22:40,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:22:40,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:22:40,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15707965] [2024-06-14 12:22:40,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:22:40,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:22:40,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:22:40,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:22:40,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:22:40,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:22:40,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 572 places, 549 transitions, 6798 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:40,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:22:40,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:22:40,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:22:40,901 INFO L124 PetriNetUnfolderBase]: 1270/2305 cut-off events. [2024-06-14 12:22:40,901 INFO L125 PetriNetUnfolderBase]: For 368231/368231 co-relation queries the response was YES. [2024-06-14 12:22:40,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19053 conditions, 2305 events. 1270/2305 cut-off events. For 368231/368231 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 14489 event pairs, 146 based on Foata normal form. 2/2307 useless extension candidates. Maximal degree in co-relation 18795. Up to 1060 conditions per place. [2024-06-14 12:22:40,950 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 322 selfloop transitions, 242 changer transitions 0/567 dead transitions. [2024-06-14 12:22:40,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 582 places, 567 transitions, 8342 flow [2024-06-14 12:22:40,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:22:40,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:22:40,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 151 transitions. [2024-06-14 12:22:40,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4037433155080214 [2024-06-14 12:22:40,951 INFO L175 Difference]: Start difference. First operand has 572 places, 549 transitions, 6798 flow. Second operand 11 states and 151 transitions. [2024-06-14 12:22:40,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 582 places, 567 transitions, 8342 flow [2024-06-14 12:22:42,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 575 places, 567 transitions, 7908 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-14 12:22:42,668 INFO L231 Difference]: Finished difference. Result has 576 places, 551 transitions, 6901 flow [2024-06-14 12:22:42,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6368, PETRI_DIFFERENCE_MINUEND_PLACES=565, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=549, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=240, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6901, PETRI_PLACES=576, PETRI_TRANSITIONS=551} [2024-06-14 12:22:42,669 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 543 predicate places. [2024-06-14 12:22:42,669 INFO L495 AbstractCegarLoop]: Abstraction has has 576 places, 551 transitions, 6901 flow [2024-06-14 12:22:42,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:42,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:22:42,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:22:42,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-14 12:22:42,669 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:22:42,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:22:42,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1476646592, now seen corresponding path program 43 times [2024-06-14 12:22:42,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:22:42,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91443551] [2024-06-14 12:22:42,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:22:42,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:22:42,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:22:43,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:22:43,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:22:43,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91443551] [2024-06-14 12:22:43,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91443551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:22:43,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:22:43,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:22:43,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685306245] [2024-06-14 12:22:43,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:22:43,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:22:43,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:22:43,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:22:43,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:22:43,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:22:43,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 576 places, 551 transitions, 6901 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:43,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:22:43,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:22:43,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:22:44,516 INFO L124 PetriNetUnfolderBase]: 1296/2353 cut-off events. [2024-06-14 12:22:44,516 INFO L125 PetriNetUnfolderBase]: For 415962/415962 co-relation queries the response was YES. [2024-06-14 12:22:44,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20032 conditions, 2353 events. 1296/2353 cut-off events. For 415962/415962 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 14819 event pairs, 145 based on Foata normal form. 2/2355 useless extension candidates. Maximal degree in co-relation 19773. Up to 1084 conditions per place. [2024-06-14 12:22:44,553 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 319 selfloop transitions, 254 changer transitions 0/576 dead transitions. [2024-06-14 12:22:44,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 586 places, 576 transitions, 9431 flow [2024-06-14 12:22:44,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:22:44,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:22:44,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 156 transitions. [2024-06-14 12:22:44,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41711229946524064 [2024-06-14 12:22:44,554 INFO L175 Difference]: Start difference. First operand has 576 places, 551 transitions, 6901 flow. Second operand 11 states and 156 transitions. [2024-06-14 12:22:44,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 586 places, 576 transitions, 9431 flow [2024-06-14 12:22:46,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 578 places, 576 transitions, 8957 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-14 12:22:46,355 INFO L231 Difference]: Finished difference. Result has 579 places, 557 transitions, 7090 flow [2024-06-14 12:22:46,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6439, PETRI_DIFFERENCE_MINUEND_PLACES=568, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=248, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7090, PETRI_PLACES=579, PETRI_TRANSITIONS=557} [2024-06-14 12:22:46,355 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 546 predicate places. [2024-06-14 12:22:46,355 INFO L495 AbstractCegarLoop]: Abstraction has has 579 places, 557 transitions, 7090 flow [2024-06-14 12:22:46,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:46,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:22:46,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:22:46,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-14 12:22:46,355 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:22:46,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:22:46,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1484997744, now seen corresponding path program 4 times [2024-06-14 12:22:46,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:22:46,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907643166] [2024-06-14 12:22:46,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:22:46,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:22:46,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:22:47,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:22:47,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:22:47,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907643166] [2024-06-14 12:22:47,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907643166] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:22:47,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:22:47,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:22:47,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824532761] [2024-06-14 12:22:47,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:22:47,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:22:47,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:22:47,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:22:47,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:22:47,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-06-14 12:22:47,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 579 places, 557 transitions, 7090 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:47,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:22:47,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-06-14 12:22:47,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:22:48,528 INFO L124 PetriNetUnfolderBase]: 1242/2297 cut-off events. [2024-06-14 12:22:48,528 INFO L125 PetriNetUnfolderBase]: For 430027/430029 co-relation queries the response was YES. [2024-06-14 12:22:48,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19796 conditions, 2297 events. 1242/2297 cut-off events. For 430027/430029 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 14801 event pairs, 224 based on Foata normal form. 4/2297 useless extension candidates. Maximal degree in co-relation 19536. Up to 1917 conditions per place. [2024-06-14 12:22:48,572 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 448 selfloop transitions, 45 changer transitions 0/569 dead transitions. [2024-06-14 12:22:48,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 589 places, 569 transitions, 8134 flow [2024-06-14 12:22:48,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:22:48,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:22:48,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-14 12:22:48,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3850267379679144 [2024-06-14 12:22:48,573 INFO L175 Difference]: Start difference. First operand has 579 places, 557 transitions, 7090 flow. Second operand 11 states and 144 transitions. [2024-06-14 12:22:48,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 589 places, 569 transitions, 8134 flow [2024-06-14 12:22:50,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 581 places, 569 transitions, 7546 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-14 12:22:50,282 INFO L231 Difference]: Finished difference. Result has 582 places, 558 transitions, 6632 flow [2024-06-14 12:22:50,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6502, PETRI_DIFFERENCE_MINUEND_PLACES=571, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=557, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6632, PETRI_PLACES=582, PETRI_TRANSITIONS=558} [2024-06-14 12:22:50,282 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 549 predicate places. [2024-06-14 12:22:50,282 INFO L495 AbstractCegarLoop]: Abstraction has has 582 places, 558 transitions, 6632 flow [2024-06-14 12:22:50,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:50,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:22:50,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:22:50,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-14 12:22:50,283 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:22:50,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:22:50,283 INFO L85 PathProgramCache]: Analyzing trace with hash -134256342, now seen corresponding path program 44 times [2024-06-14 12:22:50,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:22:50,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322805929] [2024-06-14 12:22:50,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:22:50,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:22:50,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:22:51,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:22:51,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:22:51,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322805929] [2024-06-14 12:22:51,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322805929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:22:51,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:22:51,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:22:51,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096448459] [2024-06-14 12:22:51,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:22:51,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:22:51,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:22:51,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:22:51,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:22:51,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:22:51,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 582 places, 558 transitions, 6632 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:51,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:22:51,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:22:51,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:22:52,138 INFO L124 PetriNetUnfolderBase]: 1316/2391 cut-off events. [2024-06-14 12:22:52,138 INFO L125 PetriNetUnfolderBase]: For 447019/447019 co-relation queries the response was YES. [2024-06-14 12:22:52,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20093 conditions, 2391 events. 1316/2391 cut-off events. For 447019/447019 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 15123 event pairs, 152 based on Foata normal form. 2/2393 useless extension candidates. Maximal degree in co-relation 19832. Up to 1107 conditions per place. [2024-06-14 12:22:52,174 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 349 selfloop transitions, 231 changer transitions 0/583 dead transitions. [2024-06-14 12:22:52,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 592 places, 583 transitions, 9154 flow [2024-06-14 12:22:52,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:22:52,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:22:52,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 161 transitions. [2024-06-14 12:22:52,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4304812834224599 [2024-06-14 12:22:52,175 INFO L175 Difference]: Start difference. First operand has 582 places, 558 transitions, 6632 flow. Second operand 11 states and 161 transitions. [2024-06-14 12:22:52,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 592 places, 583 transitions, 9154 flow [2024-06-14 12:22:54,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 583 places, 583 transitions, 9034 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-14 12:22:54,136 INFO L231 Difference]: Finished difference. Result has 584 places, 562 transitions, 7067 flow [2024-06-14 12:22:54,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6512, PETRI_DIFFERENCE_MINUEND_PLACES=573, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=227, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7067, PETRI_PLACES=584, PETRI_TRANSITIONS=562} [2024-06-14 12:22:54,136 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 551 predicate places. [2024-06-14 12:22:54,137 INFO L495 AbstractCegarLoop]: Abstraction has has 584 places, 562 transitions, 7067 flow [2024-06-14 12:22:54,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:54,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:22:54,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:22:54,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-14 12:22:54,137 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:22:54,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:22:54,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1921380150, now seen corresponding path program 16 times [2024-06-14 12:22:54,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:22:54,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928111405] [2024-06-14 12:22:54,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:22:54,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:22:54,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:22:55,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:22:55,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:22:55,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928111405] [2024-06-14 12:22:55,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928111405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:22:55,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:22:55,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:22:55,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157447635] [2024-06-14 12:22:55,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:22:55,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:22:55,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:22:55,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:22:55,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:22:55,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:22:55,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 584 places, 562 transitions, 7067 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:55,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:22:55,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:22:55,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:22:56,195 INFO L124 PetriNetUnfolderBase]: 1319/2395 cut-off events. [2024-06-14 12:22:56,196 INFO L125 PetriNetUnfolderBase]: For 444147/444147 co-relation queries the response was YES. [2024-06-14 12:22:56,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20653 conditions, 2395 events. 1319/2395 cut-off events. For 444147/444147 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 15123 event pairs, 169 based on Foata normal form. 1/2396 useless extension candidates. Maximal degree in co-relation 20391. Up to 1994 conditions per place. [2024-06-14 12:22:56,240 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 466 selfloop transitions, 105 changer transitions 0/574 dead transitions. [2024-06-14 12:22:56,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 594 places, 574 transitions, 8295 flow [2024-06-14 12:22:56,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:22:56,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:22:56,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-14 12:22:56,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38235294117647056 [2024-06-14 12:22:56,241 INFO L175 Difference]: Start difference. First operand has 584 places, 562 transitions, 7067 flow. Second operand 11 states and 143 transitions. [2024-06-14 12:22:56,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 594 places, 574 transitions, 8295 flow [2024-06-14 12:22:58,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 587 places, 574 transitions, 7822 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-14 12:22:58,334 INFO L231 Difference]: Finished difference. Result has 588 places, 564 transitions, 6877 flow [2024-06-14 12:22:58,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6594, PETRI_DIFFERENCE_MINUEND_PLACES=577, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6877, PETRI_PLACES=588, PETRI_TRANSITIONS=564} [2024-06-14 12:22:58,334 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 555 predicate places. [2024-06-14 12:22:58,334 INFO L495 AbstractCegarLoop]: Abstraction has has 588 places, 564 transitions, 6877 flow [2024-06-14 12:22:58,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:58,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:22:58,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:22:58,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-14 12:22:58,334 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:22:58,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:22:58,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1819964106, now seen corresponding path program 45 times [2024-06-14 12:22:58,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:22:58,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473037686] [2024-06-14 12:22:58,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:22:58,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:22:58,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:22:59,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:22:59,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:22:59,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473037686] [2024-06-14 12:22:59,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473037686] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:22:59,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:22:59,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:22:59,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155214833] [2024-06-14 12:22:59,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:22:59,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:22:59,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:22:59,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:22:59,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:22:59,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:22:59,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 588 places, 564 transitions, 6877 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:59,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:22:59,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:22:59,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:23:00,063 INFO L124 PetriNetUnfolderBase]: 1315/2390 cut-off events. [2024-06-14 12:23:00,063 INFO L125 PetriNetUnfolderBase]: For 437257/437257 co-relation queries the response was YES. [2024-06-14 12:23:00,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19977 conditions, 2390 events. 1315/2390 cut-off events. For 437257/437257 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 15131 event pairs, 154 based on Foata normal form. 2/2392 useless extension candidates. Maximal degree in co-relation 19714. Up to 1109 conditions per place. [2024-06-14 12:23:00,109 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 312 selfloop transitions, 265 changer transitions 0/580 dead transitions. [2024-06-14 12:23:00,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 598 places, 580 transitions, 8693 flow [2024-06-14 12:23:00,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:23:00,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:23:00,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 151 transitions. [2024-06-14 12:23:00,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4037433155080214 [2024-06-14 12:23:00,110 INFO L175 Difference]: Start difference. First operand has 588 places, 564 transitions, 6877 flow. Second operand 11 states and 151 transitions. [2024-06-14 12:23:00,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 598 places, 580 transitions, 8693 flow [2024-06-14 12:23:02,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 589 places, 580 transitions, 8396 flow, removed 45 selfloop flow, removed 9 redundant places. [2024-06-14 12:23:02,129 INFO L231 Difference]: Finished difference. Result has 590 places, 564 transitions, 7115 flow [2024-06-14 12:23:02,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6580, PETRI_DIFFERENCE_MINUEND_PLACES=579, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=265, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7115, PETRI_PLACES=590, PETRI_TRANSITIONS=564} [2024-06-14 12:23:02,130 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 557 predicate places. [2024-06-14 12:23:02,130 INFO L495 AbstractCegarLoop]: Abstraction has has 590 places, 564 transitions, 7115 flow [2024-06-14 12:23:02,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:02,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:23:02,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:23:02,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-14 12:23:02,130 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:23:02,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:23:02,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1675527226, now seen corresponding path program 46 times [2024-06-14 12:23:02,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:23:02,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778744352] [2024-06-14 12:23:02,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:23:02,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:23:02,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:23:03,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:23:03,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:23:03,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778744352] [2024-06-14 12:23:03,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778744352] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:23:03,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:23:03,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:23:03,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664348995] [2024-06-14 12:23:03,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:23:03,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:23:03,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:23:03,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:23:03,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:23:03,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:23:03,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 590 places, 564 transitions, 7115 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:03,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:23:03,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:23:03,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:23:03,847 INFO L124 PetriNetUnfolderBase]: 1311/2376 cut-off events. [2024-06-14 12:23:03,848 INFO L125 PetriNetUnfolderBase]: For 421913/421913 co-relation queries the response was YES. [2024-06-14 12:23:03,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20030 conditions, 2376 events. 1311/2376 cut-off events. For 421913/421913 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 14959 event pairs, 88 based on Foata normal form. 2/2378 useless extension candidates. Maximal degree in co-relation 19766. Up to 1106 conditions per place. [2024-06-14 12:23:03,891 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 291 selfloop transitions, 287 changer transitions 0/581 dead transitions. [2024-06-14 12:23:03,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 600 places, 581 transitions, 8949 flow [2024-06-14 12:23:03,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:23:03,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:23:03,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 152 transitions. [2024-06-14 12:23:03,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40641711229946526 [2024-06-14 12:23:03,892 INFO L175 Difference]: Start difference. First operand has 590 places, 564 transitions, 7115 flow. Second operand 11 states and 152 transitions. [2024-06-14 12:23:03,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 600 places, 581 transitions, 8949 flow [2024-06-14 12:23:05,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 591 places, 581 transitions, 8411 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-14 12:23:05,856 INFO L231 Difference]: Finished difference. Result has 592 places, 564 transitions, 7156 flow [2024-06-14 12:23:05,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6577, PETRI_DIFFERENCE_MINUEND_PLACES=581, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=287, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7156, PETRI_PLACES=592, PETRI_TRANSITIONS=564} [2024-06-14 12:23:05,856 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 559 predicate places. [2024-06-14 12:23:05,857 INFO L495 AbstractCegarLoop]: Abstraction has has 592 places, 564 transitions, 7156 flow [2024-06-14 12:23:05,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:05,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:23:05,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:23:05,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-14 12:23:05,857 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:23:05,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:23:05,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1921388830, now seen corresponding path program 47 times [2024-06-14 12:23:05,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:23:05,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81298557] [2024-06-14 12:23:05,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:23:05,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:23:05,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:23:06,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:23:06,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:23:06,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81298557] [2024-06-14 12:23:06,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81298557] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:23:06,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:23:06,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:23:06,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973491305] [2024-06-14 12:23:06,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:23:06,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:23:06,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:23:06,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:23:06,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:23:06,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:23:06,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 592 places, 564 transitions, 7156 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:06,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:23:06,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:23:06,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:23:07,583 INFO L124 PetriNetUnfolderBase]: 1307/2374 cut-off events. [2024-06-14 12:23:07,583 INFO L125 PetriNetUnfolderBase]: For 405690/405690 co-relation queries the response was YES. [2024-06-14 12:23:07,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19797 conditions, 2374 events. 1307/2374 cut-off events. For 405690/405690 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 15017 event pairs, 148 based on Foata normal form. 2/2376 useless extension candidates. Maximal degree in co-relation 19532. Up to 1103 conditions per place. [2024-06-14 12:23:07,627 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 351 selfloop transitions, 230 changer transitions 0/584 dead transitions. [2024-06-14 12:23:07,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 602 places, 584 transitions, 9324 flow [2024-06-14 12:23:07,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:23:07,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:23:07,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 161 transitions. [2024-06-14 12:23:07,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4304812834224599 [2024-06-14 12:23:07,628 INFO L175 Difference]: Start difference. First operand has 592 places, 564 transitions, 7156 flow. Second operand 11 states and 161 transitions. [2024-06-14 12:23:07,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 602 places, 584 transitions, 9324 flow [2024-06-14 12:23:09,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 593 places, 584 transitions, 8725 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-14 12:23:09,505 INFO L231 Difference]: Finished difference. Result has 594 places, 564 transitions, 7022 flow [2024-06-14 12:23:09,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6557, PETRI_DIFFERENCE_MINUEND_PLACES=583, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=230, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7022, PETRI_PLACES=594, PETRI_TRANSITIONS=564} [2024-06-14 12:23:09,505 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 561 predicate places. [2024-06-14 12:23:09,505 INFO L495 AbstractCegarLoop]: Abstraction has has 594 places, 564 transitions, 7022 flow [2024-06-14 12:23:09,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:09,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:23:09,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:23:09,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-14 12:23:09,506 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:23:09,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:23:09,506 INFO L85 PathProgramCache]: Analyzing trace with hash -2143264510, now seen corresponding path program 48 times [2024-06-14 12:23:09,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:23:09,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124815562] [2024-06-14 12:23:09,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:23:09,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:23:09,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:23:10,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:23:10,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:23:10,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124815562] [2024-06-14 12:23:10,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124815562] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:23:10,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:23:10,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:23:10,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038721541] [2024-06-14 12:23:10,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:23:10,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:23:10,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:23:10,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:23:10,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:23:10,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:23:10,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 594 places, 564 transitions, 7022 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:10,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:23:10,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:23:10,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:23:11,286 INFO L124 PetriNetUnfolderBase]: 1303/2372 cut-off events. [2024-06-14 12:23:11,286 INFO L125 PetriNetUnfolderBase]: For 388248/388248 co-relation queries the response was YES. [2024-06-14 12:23:11,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19310 conditions, 2372 events. 1303/2372 cut-off events. For 388248/388248 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 15060 event pairs, 151 based on Foata normal form. 2/2374 useless extension candidates. Maximal degree in co-relation 19044. Up to 1100 conditions per place. [2024-06-14 12:23:11,330 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 342 selfloop transitions, 236 changer transitions 0/581 dead transitions. [2024-06-14 12:23:11,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 604 places, 581 transitions, 8574 flow [2024-06-14 12:23:11,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:23:11,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:23:11,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 155 transitions. [2024-06-14 12:23:11,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4144385026737968 [2024-06-14 12:23:11,331 INFO L175 Difference]: Start difference. First operand has 594 places, 564 transitions, 7022 flow. Second operand 11 states and 155 transitions. [2024-06-14 12:23:11,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 604 places, 581 transitions, 8574 flow [2024-06-14 12:23:13,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 594 places, 581 transitions, 8078 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-14 12:23:13,067 INFO L231 Difference]: Finished difference. Result has 595 places, 564 transitions, 7003 flow [2024-06-14 12:23:13,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6526, PETRI_DIFFERENCE_MINUEND_PLACES=584, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=236, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7003, PETRI_PLACES=595, PETRI_TRANSITIONS=564} [2024-06-14 12:23:13,068 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 562 predicate places. [2024-06-14 12:23:13,068 INFO L495 AbstractCegarLoop]: Abstraction has has 595 places, 564 transitions, 7003 flow [2024-06-14 12:23:13,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:13,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:23:13,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:23:13,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-14 12:23:13,069 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:23:13,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:23:13,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1332940336, now seen corresponding path program 49 times [2024-06-14 12:23:13,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:23:13,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893923082] [2024-06-14 12:23:13,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:23:13,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:23:13,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:23:14,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:23:14,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:23:14,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893923082] [2024-06-14 12:23:14,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893923082] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:23:14,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:23:14,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:23:14,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147097264] [2024-06-14 12:23:14,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:23:14,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:23:14,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:23:14,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:23:14,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:23:14,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:23:14,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 595 places, 564 transitions, 7003 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:14,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:23:14,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:23:14,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:23:14,970 INFO L124 PetriNetUnfolderBase]: 1299/2365 cut-off events. [2024-06-14 12:23:14,971 INFO L125 PetriNetUnfolderBase]: For 370266/370266 co-relation queries the response was YES. [2024-06-14 12:23:15,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18971 conditions, 2365 events. 1299/2365 cut-off events. For 370266/370266 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 14985 event pairs, 341 based on Foata normal form. 2/2367 useless extension candidates. Maximal degree in co-relation 18704. Up to 2192 conditions per place. [2024-06-14 12:23:15,010 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 553 selfloop transitions, 19 changer transitions 0/575 dead transitions. [2024-06-14 12:23:15,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 605 places, 575 transitions, 8181 flow [2024-06-14 12:23:15,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:23:15,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:23:15,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-14 12:23:15,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3422459893048128 [2024-06-14 12:23:15,016 INFO L175 Difference]: Start difference. First operand has 595 places, 564 transitions, 7003 flow. Second operand 11 states and 128 transitions. [2024-06-14 12:23:15,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 605 places, 575 transitions, 8181 flow [2024-06-14 12:23:17,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 593 places, 575 transitions, 7593 flow, removed 15 selfloop flow, removed 12 redundant places. [2024-06-14 12:23:17,318 INFO L231 Difference]: Finished difference. Result has 594 places, 564 transitions, 6458 flow [2024-06-14 12:23:17,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6415, PETRI_DIFFERENCE_MINUEND_PLACES=583, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=545, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6458, PETRI_PLACES=594, PETRI_TRANSITIONS=564} [2024-06-14 12:23:17,318 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 561 predicate places. [2024-06-14 12:23:17,318 INFO L495 AbstractCegarLoop]: Abstraction has has 594 places, 564 transitions, 6458 flow [2024-06-14 12:23:17,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:17,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:23:17,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:23:17,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-14 12:23:17,319 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:23:17,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:23:17,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1332940026, now seen corresponding path program 17 times [2024-06-14 12:23:17,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:23:17,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193722665] [2024-06-14 12:23:17,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:23:17,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:23:17,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:23:18,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:23:18,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:23:18,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193722665] [2024-06-14 12:23:18,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193722665] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:23:18,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:23:18,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:23:18,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119312369] [2024-06-14 12:23:18,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:23:18,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:23:18,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:23:18,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:23:18,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:23:18,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:23:18,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 594 places, 564 transitions, 6458 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:18,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:23:18,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:23:18,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:23:19,626 INFO L124 PetriNetUnfolderBase]: 1302/2368 cut-off events. [2024-06-14 12:23:19,626 INFO L125 PetriNetUnfolderBase]: For 360864/360864 co-relation queries the response was YES. [2024-06-14 12:23:19,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18430 conditions, 2368 events. 1302/2368 cut-off events. For 360864/360864 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 15002 event pairs, 343 based on Foata normal form. 1/2369 useless extension candidates. Maximal degree in co-relation 18162. Up to 2200 conditions per place. [2024-06-14 12:23:19,663 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 554 selfloop transitions, 19 changer transitions 0/576 dead transitions. [2024-06-14 12:23:19,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 604 places, 576 transitions, 7694 flow [2024-06-14 12:23:19,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:23:19,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:23:19,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-14 12:23:19,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.339572192513369 [2024-06-14 12:23:19,664 INFO L175 Difference]: Start difference. First operand has 594 places, 564 transitions, 6458 flow. Second operand 11 states and 127 transitions. [2024-06-14 12:23:19,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 604 places, 576 transitions, 7694 flow [2024-06-14 12:23:21,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 592 places, 576 transitions, 7623 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-14 12:23:21,485 INFO L231 Difference]: Finished difference. Result has 593 places, 566 transitions, 6502 flow [2024-06-14 12:23:21,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6387, PETRI_DIFFERENCE_MINUEND_PLACES=582, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=545, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6502, PETRI_PLACES=593, PETRI_TRANSITIONS=566} [2024-06-14 12:23:21,486 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 560 predicate places. [2024-06-14 12:23:21,486 INFO L495 AbstractCegarLoop]: Abstraction has has 593 places, 566 transitions, 6502 flow [2024-06-14 12:23:21,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:21,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:23:21,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:23:21,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-14 12:23:21,486 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:23:21,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:23:21,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1569797106, now seen corresponding path program 50 times [2024-06-14 12:23:21,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:23:21,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442124440] [2024-06-14 12:23:21,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:23:21,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:23:21,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:23:22,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:23:22,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:23:22,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442124440] [2024-06-14 12:23:22,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442124440] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:23:22,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:23:22,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:23:22,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090400587] [2024-06-14 12:23:22,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:23:22,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:23:22,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:23:22,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:23:22,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:23:22,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:23:22,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 593 places, 566 transitions, 6502 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:22,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:23:22,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:23:22,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:23:23,175 INFO L124 PetriNetUnfolderBase]: 1308/2380 cut-off events. [2024-06-14 12:23:23,175 INFO L125 PetriNetUnfolderBase]: For 377143/377143 co-relation queries the response was YES. [2024-06-14 12:23:23,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18547 conditions, 2380 events. 1308/2380 cut-off events. For 377143/377143 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 15123 event pairs, 142 based on Foata normal form. 2/2382 useless extension candidates. Maximal degree in co-relation 18278. Up to 1108 conditions per place. [2024-06-14 12:23:23,219 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 347 selfloop transitions, 236 changer transitions 0/586 dead transitions. [2024-06-14 12:23:23,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 603 places, 586 transitions, 8422 flow [2024-06-14 12:23:23,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:23:23,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:23:23,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 156 transitions. [2024-06-14 12:23:23,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41711229946524064 [2024-06-14 12:23:23,220 INFO L175 Difference]: Start difference. First operand has 593 places, 566 transitions, 6502 flow. Second operand 11 states and 156 transitions. [2024-06-14 12:23:23,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 603 places, 586 transitions, 8422 flow [2024-06-14 12:23:25,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 594 places, 586 transitions, 8323 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-14 12:23:25,083 INFO L231 Difference]: Finished difference. Result has 595 places, 568 transitions, 6924 flow [2024-06-14 12:23:25,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6403, PETRI_DIFFERENCE_MINUEND_PLACES=584, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=234, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6924, PETRI_PLACES=595, PETRI_TRANSITIONS=568} [2024-06-14 12:23:25,083 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 562 predicate places. [2024-06-14 12:23:25,083 INFO L495 AbstractCegarLoop]: Abstraction has has 595 places, 568 transitions, 6924 flow [2024-06-14 12:23:25,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:25,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:23:25,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:23:25,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-14 12:23:25,084 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:23:25,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:23:25,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1332929424, now seen corresponding path program 5 times [2024-06-14 12:23:25,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:23:25,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492897749] [2024-06-14 12:23:25,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:23:25,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:23:25,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:23:26,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:23:26,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:23:26,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492897749] [2024-06-14 12:23:26,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492897749] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:23:26,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:23:26,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:23:26,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119334135] [2024-06-14 12:23:26,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:23:26,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:23:26,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:23:26,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:23:26,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:23:26,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-06-14 12:23:26,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 595 places, 568 transitions, 6924 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:26,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:23:26,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-06-14 12:23:26,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:23:27,258 INFO L124 PetriNetUnfolderBase]: 1256/2327 cut-off events. [2024-06-14 12:23:27,259 INFO L125 PetriNetUnfolderBase]: For 392237/392239 co-relation queries the response was YES. [2024-06-14 12:23:27,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18812 conditions, 2327 events. 1256/2327 cut-off events. For 392237/392239 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 15076 event pairs, 321 based on Foata normal form. 4/2323 useless extension candidates. Maximal degree in co-relation 18542. Up to 2003 conditions per place. [2024-06-14 12:23:27,301 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 486 selfloop transitions, 18 changer transitions 0/582 dead transitions. [2024-06-14 12:23:27,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 605 places, 582 transitions, 8000 flow [2024-06-14 12:23:27,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:23:27,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:23:27,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-14 12:23:27,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3663101604278075 [2024-06-14 12:23:27,302 INFO L175 Difference]: Start difference. First operand has 595 places, 568 transitions, 6924 flow. Second operand 11 states and 137 transitions. [2024-06-14 12:23:27,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 605 places, 582 transitions, 8000 flow [2024-06-14 12:23:29,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 595 places, 582 transitions, 7475 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-14 12:23:29,139 INFO L231 Difference]: Finished difference. Result has 597 places, 571 transitions, 6492 flow [2024-06-14 12:23:29,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6399, PETRI_DIFFERENCE_MINUEND_PLACES=585, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=550, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6492, PETRI_PLACES=597, PETRI_TRANSITIONS=571} [2024-06-14 12:23:29,139 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 564 predicate places. [2024-06-14 12:23:29,139 INFO L495 AbstractCegarLoop]: Abstraction has has 597 places, 571 transitions, 6492 flow [2024-06-14 12:23:29,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:29,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:23:29,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:23:29,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-14 12:23:29,140 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:23:29,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:23:29,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1320964974, now seen corresponding path program 6 times [2024-06-14 12:23:29,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:23:29,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368197148] [2024-06-14 12:23:29,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:23:29,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:23:29,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:23:30,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:23:30,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:23:30,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368197148] [2024-06-14 12:23:30,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368197148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:23:30,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:23:30,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:23:30,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386063215] [2024-06-14 12:23:30,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:23:30,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:23:30,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:23:30,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:23:30,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:23:30,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-06-14 12:23:30,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 597 places, 571 transitions, 6492 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:30,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:23:30,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-06-14 12:23:30,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:23:31,165 INFO L124 PetriNetUnfolderBase]: 1260/2335 cut-off events. [2024-06-14 12:23:31,166 INFO L125 PetriNetUnfolderBase]: For 395668/395670 co-relation queries the response was YES. [2024-06-14 12:23:31,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18342 conditions, 2335 events. 1260/2335 cut-off events. For 395668/395670 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 15169 event pairs, 321 based on Foata normal form. 4/2331 useless extension candidates. Maximal degree in co-relation 18070. Up to 2005 conditions per place. [2024-06-14 12:23:31,207 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 484 selfloop transitions, 22 changer transitions 0/584 dead transitions. [2024-06-14 12:23:31,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 608 places, 584 transitions, 7568 flow [2024-06-14 12:23:31,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:23:31,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:23:31,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-14 12:23:31,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36519607843137253 [2024-06-14 12:23:31,208 INFO L175 Difference]: Start difference. First operand has 597 places, 571 transitions, 6492 flow. Second operand 12 states and 149 transitions. [2024-06-14 12:23:31,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 608 places, 584 transitions, 7568 flow [2024-06-14 12:23:33,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 600 places, 584 transitions, 7503 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-14 12:23:33,151 INFO L231 Difference]: Finished difference. Result has 601 places, 572 transitions, 6515 flow [2024-06-14 12:23:33,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6427, PETRI_DIFFERENCE_MINUEND_PLACES=589, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=571, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=549, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6515, PETRI_PLACES=601, PETRI_TRANSITIONS=572} [2024-06-14 12:23:33,151 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 568 predicate places. [2024-06-14 12:23:33,151 INFO L495 AbstractCegarLoop]: Abstraction has has 601 places, 572 transitions, 6515 flow [2024-06-14 12:23:33,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:33,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:23:33,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:23:33,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-14 12:23:33,152 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:23:33,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:23:33,152 INFO L85 PathProgramCache]: Analyzing trace with hash -126212772, now seen corresponding path program 51 times [2024-06-14 12:23:33,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:23:33,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522485372] [2024-06-14 12:23:33,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:23:33,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:23:33,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:23:34,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:23:34,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:23:34,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522485372] [2024-06-14 12:23:34,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522485372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:23:34,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:23:34,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:23:34,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218752724] [2024-06-14 12:23:34,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:23:34,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:23:34,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:23:34,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:23:34,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:23:34,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:23:34,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 601 places, 572 transitions, 6515 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:34,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:23:34,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:23:34,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:23:34,935 INFO L124 PetriNetUnfolderBase]: 1325/2413 cut-off events. [2024-06-14 12:23:34,935 INFO L125 PetriNetUnfolderBase]: For 392139/392139 co-relation queries the response was YES. [2024-06-14 12:23:34,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18773 conditions, 2413 events. 1325/2413 cut-off events. For 392139/392139 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 15397 event pairs, 142 based on Foata normal form. 2/2415 useless extension candidates. Maximal degree in co-relation 18500. Up to 1135 conditions per place. [2024-06-14 12:23:34,981 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 353 selfloop transitions, 237 changer transitions 0/593 dead transitions. [2024-06-14 12:23:34,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 611 places, 593 transitions, 8471 flow [2024-06-14 12:23:34,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:23:34,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:23:34,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 158 transitions. [2024-06-14 12:23:34,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42245989304812837 [2024-06-14 12:23:34,982 INFO L175 Difference]: Start difference. First operand has 601 places, 572 transitions, 6515 flow. Second operand 11 states and 158 transitions. [2024-06-14 12:23:34,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 611 places, 593 transitions, 8471 flow [2024-06-14 12:23:36,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 600 places, 593 transitions, 8383 flow, removed 20 selfloop flow, removed 11 redundant places. [2024-06-14 12:23:36,778 INFO L231 Difference]: Finished difference. Result has 601 places, 574 transitions, 6948 flow [2024-06-14 12:23:36,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6427, PETRI_DIFFERENCE_MINUEND_PLACES=590, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=235, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6948, PETRI_PLACES=601, PETRI_TRANSITIONS=574} [2024-06-14 12:23:36,784 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 568 predicate places. [2024-06-14 12:23:36,784 INFO L495 AbstractCegarLoop]: Abstraction has has 601 places, 574 transitions, 6948 flow [2024-06-14 12:23:36,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:36,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:23:36,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:23:36,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-14 12:23:36,785 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:23:36,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:23:36,785 INFO L85 PathProgramCache]: Analyzing trace with hash -126212462, now seen corresponding path program 18 times [2024-06-14 12:23:36,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:23:36,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691979163] [2024-06-14 12:23:36,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:23:36,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:23:36,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:23:38,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:23:38,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:23:38,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691979163] [2024-06-14 12:23:38,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691979163] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:23:38,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:23:38,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:23:38,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183229951] [2024-06-14 12:23:38,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:23:38,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:23:38,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:23:38,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:23:38,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:23:38,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:23:38,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 601 places, 574 transitions, 6948 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:38,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:23:38,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:23:38,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:23:38,843 INFO L124 PetriNetUnfolderBase]: 1328/2418 cut-off events. [2024-06-14 12:23:38,843 INFO L125 PetriNetUnfolderBase]: For 386118/386118 co-relation queries the response was YES. [2024-06-14 12:23:38,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19363 conditions, 2418 events. 1328/2418 cut-off events. For 386118/386118 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 15407 event pairs, 168 based on Foata normal form. 1/2419 useless extension candidates. Maximal degree in co-relation 19090. Up to 2015 conditions per place. [2024-06-14 12:23:38,888 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 477 selfloop transitions, 106 changer transitions 0/586 dead transitions. [2024-06-14 12:23:38,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 611 places, 586 transitions, 8208 flow [2024-06-14 12:23:38,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:23:38,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:23:38,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-14 12:23:38,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37967914438502676 [2024-06-14 12:23:38,889 INFO L175 Difference]: Start difference. First operand has 601 places, 574 transitions, 6948 flow. Second operand 11 states and 142 transitions. [2024-06-14 12:23:38,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 611 places, 586 transitions, 8208 flow [2024-06-14 12:23:40,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 603 places, 586 transitions, 7713 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-14 12:23:40,961 INFO L231 Difference]: Finished difference. Result has 604 places, 576 transitions, 6746 flow [2024-06-14 12:23:40,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6453, PETRI_DIFFERENCE_MINUEND_PLACES=593, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6746, PETRI_PLACES=604, PETRI_TRANSITIONS=576} [2024-06-14 12:23:40,961 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 571 predicate places. [2024-06-14 12:23:40,961 INFO L495 AbstractCegarLoop]: Abstraction has has 604 places, 576 transitions, 6746 flow [2024-06-14 12:23:40,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:40,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:23:40,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:23:40,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-14 12:23:40,961 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:23:40,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:23:40,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1476654962, now seen corresponding path program 52 times [2024-06-14 12:23:40,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:23:40,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282742606] [2024-06-14 12:23:40,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:23:40,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:23:40,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:23:41,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:23:41,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:23:41,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282742606] [2024-06-14 12:23:41,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282742606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:23:41,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:23:41,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:23:41,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491461888] [2024-06-14 12:23:41,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:23:41,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:23:41,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:23:41,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:23:41,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:23:41,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:23:41,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 576 transitions, 6746 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:41,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:23:41,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:23:41,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:23:42,642 INFO L124 PetriNetUnfolderBase]: 1324/2413 cut-off events. [2024-06-14 12:23:42,642 INFO L125 PetriNetUnfolderBase]: For 376636/376636 co-relation queries the response was YES. [2024-06-14 12:23:42,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18645 conditions, 2413 events. 1324/2413 cut-off events. For 376636/376636 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 15366 event pairs, 151 based on Foata normal form. 2/2415 useless extension candidates. Maximal degree in co-relation 18371. Up to 1137 conditions per place. [2024-06-14 12:23:42,686 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 327 selfloop transitions, 263 changer transitions 0/593 dead transitions. [2024-06-14 12:23:42,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 614 places, 593 transitions, 8644 flow [2024-06-14 12:23:42,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:23:42,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:23:42,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 153 transitions. [2024-06-14 12:23:42,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-14 12:23:42,686 INFO L175 Difference]: Start difference. First operand has 604 places, 576 transitions, 6746 flow. Second operand 11 states and 153 transitions. [2024-06-14 12:23:42,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 614 places, 593 transitions, 8644 flow [2024-06-14 12:23:44,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 605 places, 593 transitions, 8337 flow, removed 49 selfloop flow, removed 9 redundant places. [2024-06-14 12:23:44,420 INFO L231 Difference]: Finished difference. Result has 606 places, 576 transitions, 6970 flow [2024-06-14 12:23:44,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6439, PETRI_DIFFERENCE_MINUEND_PLACES=595, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=263, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6970, PETRI_PLACES=606, PETRI_TRANSITIONS=576} [2024-06-14 12:23:44,420 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 573 predicate places. [2024-06-14 12:23:44,420 INFO L495 AbstractCegarLoop]: Abstraction has has 606 places, 576 transitions, 6970 flow [2024-06-14 12:23:44,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:44,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:23:44,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:23:44,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-14 12:23:44,420 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:23:44,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:23:44,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1476655272, now seen corresponding path program 19 times [2024-06-14 12:23:44,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:23:44,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147013371] [2024-06-14 12:23:44,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:23:44,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:23:44,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:23:45,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:23:45,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:23:45,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147013371] [2024-06-14 12:23:45,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147013371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:23:45,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:23:45,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:23:45,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863381086] [2024-06-14 12:23:45,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:23:45,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:23:45,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:23:45,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:23:45,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:23:45,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:23:45,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 606 places, 576 transitions, 6970 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:45,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:23:45,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:23:45,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:23:46,470 INFO L124 PetriNetUnfolderBase]: 1327/2417 cut-off events. [2024-06-14 12:23:46,470 INFO L125 PetriNetUnfolderBase]: For 370030/370030 co-relation queries the response was YES. [2024-06-14 12:23:46,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19092 conditions, 2417 events. 1327/2417 cut-off events. For 370030/370030 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 15400 event pairs, 165 based on Foata normal form. 1/2418 useless extension candidates. Maximal degree in co-relation 18817. Up to 2014 conditions per place. [2024-06-14 12:23:46,515 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 470 selfloop transitions, 115 changer transitions 0/588 dead transitions. [2024-06-14 12:23:46,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 616 places, 588 transitions, 8238 flow [2024-06-14 12:23:46,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:23:46,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:23:46,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-14 12:23:46,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3716577540106952 [2024-06-14 12:23:46,516 INFO L175 Difference]: Start difference. First operand has 606 places, 576 transitions, 6970 flow. Second operand 11 states and 139 transitions. [2024-06-14 12:23:46,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 616 places, 588 transitions, 8238 flow [2024-06-14 12:23:48,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 606 places, 588 transitions, 7707 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-14 12:23:48,384 INFO L231 Difference]: Finished difference. Result has 607 places, 578 transitions, 6754 flow [2024-06-14 12:23:48,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6439, PETRI_DIFFERENCE_MINUEND_PLACES=596, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6754, PETRI_PLACES=607, PETRI_TRANSITIONS=578} [2024-06-14 12:23:48,384 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 574 predicate places. [2024-06-14 12:23:48,384 INFO L495 AbstractCegarLoop]: Abstraction has has 607 places, 578 transitions, 6754 flow [2024-06-14 12:23:48,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:48,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:23:48,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:23:48,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-14 12:23:48,385 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:23:48,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:23:48,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1913048590, now seen corresponding path program 53 times [2024-06-14 12:23:48,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:23:48,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248728665] [2024-06-14 12:23:48,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:23:48,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:23:48,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:23:49,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:23:49,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:23:49,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248728665] [2024-06-14 12:23:49,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248728665] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:23:49,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:23:49,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:23:49,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231085706] [2024-06-14 12:23:49,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:23:49,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:23:49,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:23:49,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:23:49,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:23:49,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:23:49,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 607 places, 578 transitions, 6754 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:49,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:23:49,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:23:49,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:23:50,166 INFO L124 PetriNetUnfolderBase]: 1323/2412 cut-off events. [2024-06-14 12:23:50,166 INFO L125 PetriNetUnfolderBase]: For 360021/360021 co-relation queries the response was YES. [2024-06-14 12:23:50,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18369 conditions, 2412 events. 1323/2412 cut-off events. For 360021/360021 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 15383 event pairs, 136 based on Foata normal form. 2/2414 useless extension candidates. Maximal degree in co-relation 18093. Up to 1139 conditions per place. [2024-06-14 12:23:50,203 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 348 selfloop transitions, 244 changer transitions 0/595 dead transitions. [2024-06-14 12:23:50,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 617 places, 595 transitions, 8354 flow [2024-06-14 12:23:50,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:23:50,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:23:50,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 154 transitions. [2024-06-14 12:23:50,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4117647058823529 [2024-06-14 12:23:50,204 INFO L175 Difference]: Start difference. First operand has 607 places, 578 transitions, 6754 flow. Second operand 11 states and 154 transitions. [2024-06-14 12:23:50,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 617 places, 595 transitions, 8354 flow [2024-06-14 12:23:51,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 608 places, 595 transitions, 8025 flow, removed 51 selfloop flow, removed 9 redundant places. [2024-06-14 12:23:51,918 INFO L231 Difference]: Finished difference. Result has 609 places, 578 transitions, 6918 flow [2024-06-14 12:23:51,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6425, PETRI_DIFFERENCE_MINUEND_PLACES=598, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=244, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6918, PETRI_PLACES=609, PETRI_TRANSITIONS=578} [2024-06-14 12:23:51,919 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 576 predicate places. [2024-06-14 12:23:51,919 INFO L495 AbstractCegarLoop]: Abstraction has has 609 places, 578 transitions, 6918 flow [2024-06-14 12:23:51,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:51,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:23:51,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:23:51,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-14 12:23:51,919 INFO L420 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:23:51,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:23:51,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1569500126, now seen corresponding path program 20 times [2024-06-14 12:23:51,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:23:51,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250286709] [2024-06-14 12:23:51,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:23:51,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:23:51,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:23:53,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:23:53,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:23:53,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250286709] [2024-06-14 12:23:53,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250286709] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:23:53,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:23:53,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:23:53,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273261841] [2024-06-14 12:23:53,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:23:53,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:23:53,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:23:53,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:23:53,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:23:53,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:23:53,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 609 places, 578 transitions, 6918 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:53,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:23:53,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:23:53,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:23:53,949 INFO L124 PetriNetUnfolderBase]: 1326/2416 cut-off events. [2024-06-14 12:23:53,949 INFO L125 PetriNetUnfolderBase]: For 352236/352236 co-relation queries the response was YES. [2024-06-14 12:23:53,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18767 conditions, 2416 events. 1326/2416 cut-off events. For 352236/352236 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 15438 event pairs, 166 based on Foata normal form. 1/2417 useless extension candidates. Maximal degree in co-relation 18490. Up to 2013 conditions per place. [2024-06-14 12:23:53,994 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 479 selfloop transitions, 108 changer transitions 0/590 dead transitions. [2024-06-14 12:23:53,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 619 places, 590 transitions, 8194 flow [2024-06-14 12:23:53,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:23:53,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:23:53,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-14 12:23:53,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3770053475935829 [2024-06-14 12:23:53,995 INFO L175 Difference]: Start difference. First operand has 609 places, 578 transitions, 6918 flow. Second operand 11 states and 141 transitions. [2024-06-14 12:23:53,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 619 places, 590 transitions, 8194 flow [2024-06-14 12:23:55,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 608 places, 590 transitions, 7690 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-14 12:23:55,840 INFO L231 Difference]: Finished difference. Result has 609 places, 580 transitions, 6719 flow [2024-06-14 12:23:55,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6414, PETRI_DIFFERENCE_MINUEND_PLACES=598, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6719, PETRI_PLACES=609, PETRI_TRANSITIONS=580} [2024-06-14 12:23:55,840 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 576 predicate places. [2024-06-14 12:23:55,840 INFO L495 AbstractCegarLoop]: Abstraction has has 609 places, 580 transitions, 6719 flow [2024-06-14 12:23:55,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:55,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:23:55,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:23:55,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-14 12:23:55,840 INFO L420 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:23:55,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:23:55,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1828534986, now seen corresponding path program 54 times [2024-06-14 12:23:55,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:23:55,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614610927] [2024-06-14 12:23:55,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:23:55,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:23:55,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:23:56,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:23:56,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:23:56,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614610927] [2024-06-14 12:23:56,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614610927] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:23:56,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:23:56,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:23:56,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018959657] [2024-06-14 12:23:56,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:23:56,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:23:56,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:23:56,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:23:56,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:23:56,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:23:56,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 609 places, 580 transitions, 6719 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:56,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:23:56,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:23:56,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:23:57,631 INFO L124 PetriNetUnfolderBase]: 1332/2427 cut-off events. [2024-06-14 12:23:57,631 INFO L125 PetriNetUnfolderBase]: For 368287/368287 co-relation queries the response was YES. [2024-06-14 12:23:57,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18487 conditions, 2427 events. 1332/2427 cut-off events. For 368287/368287 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 15516 event pairs, 149 based on Foata normal form. 2/2429 useless extension candidates. Maximal degree in co-relation 18209. Up to 1150 conditions per place. [2024-06-14 12:23:57,676 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 331 selfloop transitions, 264 changer transitions 0/598 dead transitions. [2024-06-14 12:23:57,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 619 places, 598 transitions, 8361 flow [2024-06-14 12:23:57,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:23:57,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:23:57,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 153 transitions. [2024-06-14 12:23:57,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-14 12:23:57,677 INFO L175 Difference]: Start difference. First operand has 609 places, 580 transitions, 6719 flow. Second operand 11 states and 153 transitions. [2024-06-14 12:23:57,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 619 places, 598 transitions, 8361 flow [2024-06-14 12:23:59,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 610 places, 598 transitions, 8072 flow, removed 38 selfloop flow, removed 9 redundant places. [2024-06-14 12:23:59,475 INFO L231 Difference]: Finished difference. Result has 611 places, 582 transitions, 7007 flow [2024-06-14 12:23:59,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6430, PETRI_DIFFERENCE_MINUEND_PLACES=600, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=580, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=262, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7007, PETRI_PLACES=611, PETRI_TRANSITIONS=582} [2024-06-14 12:23:59,476 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 578 predicate places. [2024-06-14 12:23:59,476 INFO L495 AbstractCegarLoop]: Abstraction has has 611 places, 582 transitions, 7007 flow [2024-06-14 12:23:59,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:59,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:23:59,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:23:59,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-14 12:23:59,476 INFO L420 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:23:59,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:23:59,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1484987142, now seen corresponding path program 21 times [2024-06-14 12:23:59,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:23:59,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522839288] [2024-06-14 12:23:59,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:23:59,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:23:59,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:24:00,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:24:00,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:24:00,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522839288] [2024-06-14 12:24:00,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522839288] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:24:00,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:24:00,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:24:00,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036145696] [2024-06-14 12:24:00,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:24:00,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:24:00,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:24:00,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:24:00,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:24:00,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:24:00,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 611 places, 582 transitions, 7007 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:24:00,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:24:00,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:24:00,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:24:01,514 INFO L124 PetriNetUnfolderBase]: 1335/2433 cut-off events. [2024-06-14 12:24:01,514 INFO L125 PetriNetUnfolderBase]: For 361046/361046 co-relation queries the response was YES. [2024-06-14 12:24:01,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18971 conditions, 2433 events. 1335/2433 cut-off events. For 361046/361046 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 15571 event pairs, 166 based on Foata normal form. 1/2434 useless extension candidates. Maximal degree in co-relation 18692. Up to 2028 conditions per place. [2024-06-14 12:24:01,559 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 478 selfloop transitions, 113 changer transitions 0/594 dead transitions. [2024-06-14 12:24:01,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 621 places, 594 transitions, 8295 flow [2024-06-14 12:24:01,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:24:01,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:24:01,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-14 12:24:01,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37433155080213903 [2024-06-14 12:24:01,560 INFO L175 Difference]: Start difference. First operand has 611 places, 582 transitions, 7007 flow. Second operand 11 states and 140 transitions. [2024-06-14 12:24:01,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 621 places, 594 transitions, 8295 flow [2024-06-14 12:24:03,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 612 places, 594 transitions, 7558 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-14 12:24:03,344 INFO L231 Difference]: Finished difference. Result has 613 places, 584 transitions, 6589 flow [2024-06-14 12:24:03,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6270, PETRI_DIFFERENCE_MINUEND_PLACES=602, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=582, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6589, PETRI_PLACES=613, PETRI_TRANSITIONS=584} [2024-06-14 12:24:03,344 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 580 predicate places. [2024-06-14 12:24:03,344 INFO L495 AbstractCegarLoop]: Abstraction has has 613 places, 584 transitions, 6589 flow [2024-06-14 12:24:03,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:24:03,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:24:03,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:24:03,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-14 12:24:03,345 INFO L420 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:24:03,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:24:03,345 INFO L85 PathProgramCache]: Analyzing trace with hash -986276594, now seen corresponding path program 55 times [2024-06-14 12:24:03,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:24:03,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222089831] [2024-06-14 12:24:03,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:24:03,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:24:03,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:24:04,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:24:04,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:24:04,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222089831] [2024-06-14 12:24:04,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222089831] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:24:04,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:24:04,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:24:04,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388542968] [2024-06-14 12:24:04,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:24:04,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:24:04,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:24:04,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:24:04,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:24:04,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:24:04,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 613 places, 584 transitions, 6589 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:24:04,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:24:04,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:24:04,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:24:05,076 INFO L124 PetriNetUnfolderBase]: 1341/2444 cut-off events. [2024-06-14 12:24:05,077 INFO L125 PetriNetUnfolderBase]: For 376623/376623 co-relation queries the response was YES. [2024-06-14 12:24:05,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18544 conditions, 2444 events. 1341/2444 cut-off events. For 376623/376623 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 15615 event pairs, 149 based on Foata normal form. 2/2446 useless extension candidates. Maximal degree in co-relation 18264. Up to 1161 conditions per place. [2024-06-14 12:24:05,121 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 337 selfloop transitions, 263 changer transitions 0/603 dead transitions. [2024-06-14 12:24:05,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 623 places, 603 transitions, 8255 flow [2024-06-14 12:24:05,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:24:05,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:24:05,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 156 transitions. [2024-06-14 12:24:05,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41711229946524064 [2024-06-14 12:24:05,122 INFO L175 Difference]: Start difference. First operand has 613 places, 584 transitions, 6589 flow. Second operand 11 states and 156 transitions. [2024-06-14 12:24:05,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 623 places, 603 transitions, 8255 flow [2024-06-14 12:24:06,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 614 places, 603 transitions, 7952 flow, removed 40 selfloop flow, removed 9 redundant places. [2024-06-14 12:24:06,933 INFO L231 Difference]: Finished difference. Result has 615 places, 586 transitions, 6859 flow [2024-06-14 12:24:06,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6286, PETRI_DIFFERENCE_MINUEND_PLACES=604, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=261, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6859, PETRI_PLACES=615, PETRI_TRANSITIONS=586} [2024-06-14 12:24:06,933 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 582 predicate places. [2024-06-14 12:24:06,933 INFO L495 AbstractCegarLoop]: Abstraction has has 615 places, 586 transitions, 6859 flow [2024-06-14 12:24:06,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:24:06,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:24:06,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:24:06,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-14 12:24:06,934 INFO L420 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:24:06,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:24:06,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1913037678, now seen corresponding path program 7 times [2024-06-14 12:24:06,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:24:06,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037279067] [2024-06-14 12:24:06,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:24:06,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:24:06,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:24:08,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:24:08,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:24:08,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037279067] [2024-06-14 12:24:08,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037279067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:24:08,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:24:08,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:24:08,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148199451] [2024-06-14 12:24:08,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:24:08,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:24:08,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:24:08,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:24:08,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:24:08,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-06-14 12:24:08,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 615 places, 586 transitions, 6859 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:24:08,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:24:08,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-06-14 12:24:08,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:24:09,092 INFO L124 PetriNetUnfolderBase]: 1284/2383 cut-off events. [2024-06-14 12:24:09,092 INFO L125 PetriNetUnfolderBase]: For 390490/390492 co-relation queries the response was YES. [2024-06-14 12:24:09,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18632 conditions, 2383 events. 1284/2383 cut-off events. For 390490/390492 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 15577 event pairs, 226 based on Foata normal form. 4/2383 useless extension candidates. Maximal degree in co-relation 18351. Up to 1985 conditions per place. [2024-06-14 12:24:09,138 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 473 selfloop transitions, 43 changer transitions 0/598 dead transitions. [2024-06-14 12:24:09,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 625 places, 598 transitions, 7955 flow [2024-06-14 12:24:09,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:24:09,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:24:09,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-14 12:24:09,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3877005347593583 [2024-06-14 12:24:09,148 INFO L175 Difference]: Start difference. First operand has 615 places, 586 transitions, 6859 flow. Second operand 11 states and 145 transitions. [2024-06-14 12:24:09,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 625 places, 598 transitions, 7955 flow [2024-06-14 12:24:10,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 615 places, 598 transitions, 7358 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-14 12:24:10,873 INFO L231 Difference]: Finished difference. Result has 616 places, 587 transitions, 6394 flow [2024-06-14 12:24:10,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6262, PETRI_DIFFERENCE_MINUEND_PLACES=605, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=586, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=543, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6394, PETRI_PLACES=616, PETRI_TRANSITIONS=587} [2024-06-14 12:24:10,874 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 583 predicate places. [2024-06-14 12:24:10,874 INFO L495 AbstractCegarLoop]: Abstraction has has 616 places, 587 transitions, 6394 flow [2024-06-14 12:24:10,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:24:10,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:24:10,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:24:10,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-14 12:24:10,874 INFO L420 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:24:10,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:24:10,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1913038050, now seen corresponding path program 22 times [2024-06-14 12:24:10,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:24:10,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290490444] [2024-06-14 12:24:10,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:24:10,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:24:10,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:24:11,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:24:11,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:24:11,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290490444] [2024-06-14 12:24:11,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290490444] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:24:11,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:24:11,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:24:11,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6784005] [2024-06-14 12:24:11,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:24:11,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:24:11,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:24:11,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:24:11,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:24:12,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:24:12,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 616 places, 587 transitions, 6394 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:24:12,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:24:12,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:24:12,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:24:12,810 INFO L124 PetriNetUnfolderBase]: 1348/2456 cut-off events. [2024-06-14 12:24:12,811 INFO L125 PetriNetUnfolderBase]: For 371897/371897 co-relation queries the response was YES. [2024-06-14 12:24:12,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18522 conditions, 2456 events. 1348/2456 cut-off events. For 371897/371897 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 15757 event pairs, 168 based on Foata normal form. 1/2457 useless extension candidates. Maximal degree in co-relation 18240. Up to 2036 conditions per place. [2024-06-14 12:24:12,857 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 479 selfloop transitions, 117 changer transitions 0/599 dead transitions. [2024-06-14 12:24:12,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 626 places, 599 transitions, 7696 flow [2024-06-14 12:24:12,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:24:12,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:24:12,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-14 12:24:12,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37967914438502676 [2024-06-14 12:24:12,858 INFO L175 Difference]: Start difference. First operand has 616 places, 587 transitions, 6394 flow. Second operand 11 states and 142 transitions. [2024-06-14 12:24:12,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 626 places, 599 transitions, 7696 flow [2024-06-14 12:24:14,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 617 places, 599 transitions, 7574 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-14 12:24:14,864 INFO L231 Difference]: Finished difference. Result has 618 places, 589 transitions, 6603 flow [2024-06-14 12:24:14,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6272, PETRI_DIFFERENCE_MINUEND_PLACES=607, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=587, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6603, PETRI_PLACES=618, PETRI_TRANSITIONS=589} [2024-06-14 12:24:14,865 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 585 predicate places. [2024-06-14 12:24:14,865 INFO L495 AbstractCegarLoop]: Abstraction has has 618 places, 589 transitions, 6603 flow [2024-06-14 12:24:14,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:24:14,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:24:14,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:24:14,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-14 12:24:14,865 INFO L420 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:24:14,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:24:14,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1484997372, now seen corresponding path program 23 times [2024-06-14 12:24:14,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:24:14,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486868437] [2024-06-14 12:24:14,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:24:14,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:24:14,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:24:15,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:24:15,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:24:15,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486868437] [2024-06-14 12:24:15,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486868437] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:24:15,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:24:15,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:24:15,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373087296] [2024-06-14 12:24:15,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:24:15,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:24:15,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:24:15,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:24:15,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:24:16,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:24:16,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 618 places, 589 transitions, 6603 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:24:16,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:24:16,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:24:16,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:24:16,788 INFO L124 PetriNetUnfolderBase]: 1356/2469 cut-off events. [2024-06-14 12:24:16,788 INFO L125 PetriNetUnfolderBase]: For 391249/391249 co-relation queries the response was YES. [2024-06-14 12:24:16,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19063 conditions, 2469 events. 1356/2469 cut-off events. For 391249/391249 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 15827 event pairs, 168 based on Foata normal form. 1/2470 useless extension candidates. Maximal degree in co-relation 18780. Up to 2051 conditions per place. [2024-06-14 12:24:16,836 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 481 selfloop transitions, 120 changer transitions 0/604 dead transitions. [2024-06-14 12:24:16,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 628 places, 604 transitions, 8347 flow [2024-06-14 12:24:16,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:24:16,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:24:16,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-14 12:24:16,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37967914438502676 [2024-06-14 12:24:16,837 INFO L175 Difference]: Start difference. First operand has 618 places, 589 transitions, 6603 flow. Second operand 11 states and 142 transitions. [2024-06-14 12:24:16,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 628 places, 604 transitions, 8347 flow [2024-06-14 12:24:18,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 619 places, 604 transitions, 8032 flow, removed 42 selfloop flow, removed 9 redundant places. [2024-06-14 12:24:18,682 INFO L231 Difference]: Finished difference. Result has 620 places, 593 transitions, 6721 flow [2024-06-14 12:24:18,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6288, PETRI_DIFFERENCE_MINUEND_PLACES=609, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6721, PETRI_PLACES=620, PETRI_TRANSITIONS=593} [2024-06-14 12:24:18,682 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 587 predicate places. [2024-06-14 12:24:18,682 INFO L495 AbstractCegarLoop]: Abstraction has has 620 places, 593 transitions, 6721 flow [2024-06-14 12:24:18,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:24:18,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:24:18,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:24:18,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-14 12:24:18,683 INFO L420 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:24:18,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:24:18,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1484698842, now seen corresponding path program 24 times [2024-06-14 12:24:18,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:24:18,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101346931] [2024-06-14 12:24:18,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:24:18,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:24:18,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:24:19,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:24:19,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:24:19,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101346931] [2024-06-14 12:24:19,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101346931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:24:19,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:24:19,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:24:19,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839527532] [2024-06-14 12:24:19,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:24:19,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:24:19,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:24:19,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:24:19,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:24:20,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:24:20,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 620 places, 593 transitions, 6721 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:24:20,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:24:20,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:24:20,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:24:20,737 INFO L124 PetriNetUnfolderBase]: 1354/2466 cut-off events. [2024-06-14 12:24:20,737 INFO L125 PetriNetUnfolderBase]: For 381344/381344 co-relation queries the response was YES. [2024-06-14 12:24:20,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18825 conditions, 2466 events. 1354/2466 cut-off events. For 381344/381344 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 15823 event pairs, 168 based on Foata normal form. 1/2467 useless extension candidates. Maximal degree in co-relation 18541. Up to 2061 conditions per place. [2024-06-14 12:24:20,780 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 488 selfloop transitions, 112 changer transitions 0/603 dead transitions. [2024-06-14 12:24:20,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 630 places, 603 transitions, 7943 flow [2024-06-14 12:24:20,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:24:20,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:24:20,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-14 12:24:20,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3770053475935829 [2024-06-14 12:24:20,780 INFO L175 Difference]: Start difference. First operand has 620 places, 593 transitions, 6721 flow. Second operand 11 states and 141 transitions. [2024-06-14 12:24:20,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 630 places, 603 transitions, 7943 flow [2024-06-14 12:24:22,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 623 places, 603 transitions, 7642 flow, removed 83 selfloop flow, removed 7 redundant places. [2024-06-14 12:24:22,849 INFO L231 Difference]: Finished difference. Result has 624 places, 593 transitions, 6649 flow [2024-06-14 12:24:22,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6420, PETRI_DIFFERENCE_MINUEND_PLACES=613, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=593, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6649, PETRI_PLACES=624, PETRI_TRANSITIONS=593} [2024-06-14 12:24:22,849 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 591 predicate places. [2024-06-14 12:24:22,849 INFO L495 AbstractCegarLoop]: Abstraction has has 624 places, 593 transitions, 6649 flow [2024-06-14 12:24:22,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:24:22,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:24:22,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:24:22,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-14 12:24:22,850 INFO L420 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:24:22,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:24:22,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1484690162, now seen corresponding path program 56 times [2024-06-14 12:24:22,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:24:22,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989922229] [2024-06-14 12:24:22,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:24:22,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:24:22,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:24:23,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:24:23,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:24:23,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989922229] [2024-06-14 12:24:23,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989922229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:24:23,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:24:23,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:24:23,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025665367] [2024-06-14 12:24:23,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:24:23,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:24:23,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:24:23,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:24:23,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:24:23,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:24:23,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 624 places, 593 transitions, 6649 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:24:23,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:24:23,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:24:23,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:24:24,570 INFO L124 PetriNetUnfolderBase]: 1350/2461 cut-off events. [2024-06-14 12:24:24,570 INFO L125 PetriNetUnfolderBase]: For 369787/369787 co-relation queries the response was YES. [2024-06-14 12:24:24,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18490 conditions, 2461 events. 1350/2461 cut-off events. For 369787/369787 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 15794 event pairs, 151 based on Foata normal form. 2/2463 useless extension candidates. Maximal degree in co-relation 18204. Up to 1181 conditions per place. [2024-06-14 12:24:24,617 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 341 selfloop transitions, 264 changer transitions 0/608 dead transitions. [2024-06-14 12:24:24,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 634 places, 608 transitions, 7941 flow [2024-06-14 12:24:24,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:24:24,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:24:24,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 153 transitions. [2024-06-14 12:24:24,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-14 12:24:24,617 INFO L175 Difference]: Start difference. First operand has 624 places, 593 transitions, 6649 flow. Second operand 11 states and 153 transitions. [2024-06-14 12:24:24,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 634 places, 608 transitions, 7941 flow [2024-06-14 12:24:26,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 624 places, 608 transitions, 7668 flow, removed 20 selfloop flow, removed 10 redundant places. [2024-06-14 12:24:26,437 INFO L231 Difference]: Finished difference. Result has 625 places, 593 transitions, 6909 flow [2024-06-14 12:24:26,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6376, PETRI_DIFFERENCE_MINUEND_PLACES=614, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=593, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=264, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6909, PETRI_PLACES=625, PETRI_TRANSITIONS=593} [2024-06-14 12:24:26,438 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 592 predicate places. [2024-06-14 12:24:26,438 INFO L495 AbstractCegarLoop]: Abstraction has has 625 places, 593 transitions, 6909 flow [2024-06-14 12:24:26,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:24:26,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:24:26,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:24:26,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-14 12:24:26,438 INFO L420 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:24:26,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:24:26,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1320965346, now seen corresponding path program 25 times [2024-06-14 12:24:26,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:24:26,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937618254] [2024-06-14 12:24:26,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:24:26,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:24:26,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:24:27,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:24:27,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:24:27,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937618254] [2024-06-14 12:24:27,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937618254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:24:27,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:24:27,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:24:27,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355534252] [2024-06-14 12:24:27,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:24:27,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:24:27,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:24:27,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:24:27,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:24:27,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:24:27,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 625 places, 593 transitions, 6909 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:24:27,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:24:27,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:24:27,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:24:28,364 INFO L124 PetriNetUnfolderBase]: 1353/2461 cut-off events. [2024-06-14 12:24:28,364 INFO L125 PetriNetUnfolderBase]: For 361497/361497 co-relation queries the response was YES. [2024-06-14 12:24:28,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18985 conditions, 2461 events. 1353/2461 cut-off events. For 361497/361497 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 15782 event pairs, 336 based on Foata normal form. 1/2462 useless extension candidates. Maximal degree in co-relation 18698. Up to 2275 conditions per place. [2024-06-14 12:24:28,411 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 579 selfloop transitions, 27 changer transitions 0/609 dead transitions. [2024-06-14 12:24:28,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 636 places, 609 transitions, 8679 flow [2024-06-14 12:24:28,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:24:28,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:24:28,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-14 12:24:28,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34558823529411764 [2024-06-14 12:24:28,412 INFO L175 Difference]: Start difference. First operand has 625 places, 593 transitions, 6909 flow. Second operand 12 states and 141 transitions. [2024-06-14 12:24:28,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 636 places, 609 transitions, 8679 flow [2024-06-14 12:24:30,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 625 places, 609 transitions, 8115 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-14 12:24:30,259 INFO L231 Difference]: Finished difference. Result has 626 places, 597 transitions, 6600 flow [2024-06-14 12:24:30,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6345, PETRI_DIFFERENCE_MINUEND_PLACES=614, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=593, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=568, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6600, PETRI_PLACES=626, PETRI_TRANSITIONS=597} [2024-06-14 12:24:30,260 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 593 predicate places. [2024-06-14 12:24:30,260 INFO L495 AbstractCegarLoop]: Abstraction has has 626 places, 597 transitions, 6600 flow [2024-06-14 12:24:30,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:24:30,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:24:30,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:24:30,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-14 12:24:30,261 INFO L420 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:24:30,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:24:30,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1320549264, now seen corresponding path program 8 times [2024-06-14 12:24:30,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:24:30,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376897403] [2024-06-14 12:24:30,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:24:30,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:24:30,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:24:31,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:24:31,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:24:31,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376897403] [2024-06-14 12:24:31,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376897403] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:24:31,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:24:31,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:24:31,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139463154] [2024-06-14 12:24:31,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:24:31,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:24:31,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:24:31,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:24:31,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:24:31,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-06-14 12:24:31,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 626 places, 597 transitions, 6600 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:24:31,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:24:31,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-06-14 12:24:31,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:24:32,279 INFO L124 PetriNetUnfolderBase]: 1289/2390 cut-off events. [2024-06-14 12:24:32,279 INFO L125 PetriNetUnfolderBase]: For 359154/359156 co-relation queries the response was YES. [2024-06-14 12:24:32,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17623 conditions, 2390 events. 1289/2390 cut-off events. For 359154/359156 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 15640 event pairs, 315 based on Foata normal form. 4/2386 useless extension candidates. Maximal degree in co-relation 17335. Up to 2022 conditions per place. [2024-06-14 12:24:32,324 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 499 selfloop transitions, 24 changer transitions 0/610 dead transitions. [2024-06-14 12:24:32,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 637 places, 610 transitions, 7674 flow [2024-06-14 12:24:32,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:24:32,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:24:32,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-14 12:24:32,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36519607843137253 [2024-06-14 12:24:32,325 INFO L175 Difference]: Start difference. First operand has 626 places, 597 transitions, 6600 flow. Second operand 12 states and 149 transitions. [2024-06-14 12:24:32,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 637 places, 610 transitions, 7674 flow [2024-06-14 12:24:33,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 629 places, 610 transitions, 7539 flow, removed 55 selfloop flow, removed 8 redundant places. [2024-06-14 12:24:33,847 INFO L231 Difference]: Finished difference. Result has 630 places, 597 transitions, 6517 flow [2024-06-14 12:24:33,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6465, PETRI_DIFFERENCE_MINUEND_PLACES=618, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=597, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=573, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6517, PETRI_PLACES=630, PETRI_TRANSITIONS=597} [2024-06-14 12:24:33,847 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 597 predicate places. [2024-06-14 12:24:33,848 INFO L495 AbstractCegarLoop]: Abstraction has has 630 places, 597 transitions, 6517 flow [2024-06-14 12:24:33,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:24:33,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:24:33,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:24:33,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-14 12:24:33,848 INFO L420 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:24:33,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:24:33,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1771884702, now seen corresponding path program 26 times [2024-06-14 12:24:33,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:24:33,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936197806] [2024-06-14 12:24:33,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:24:33,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:24:33,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:24:35,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:24:35,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:24:35,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936197806] [2024-06-14 12:24:35,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936197806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:24:35,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:24:35,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:24:35,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536873456] [2024-06-14 12:24:35,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:24:35,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:24:35,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:24:35,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:24:35,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:24:35,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:24:35,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 630 places, 597 transitions, 6517 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:24:35,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:24:35,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:24:35,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:24:35,920 INFO L124 PetriNetUnfolderBase]: 1348/2455 cut-off events. [2024-06-14 12:24:35,920 INFO L125 PetriNetUnfolderBase]: For 323447/323447 co-relation queries the response was YES. [2024-06-14 12:24:35,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17762 conditions, 2455 events. 1348/2455 cut-off events. For 323447/323447 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 15757 event pairs, 339 based on Foata normal form. 1/2456 useless extension candidates. Maximal degree in co-relation 17472. Up to 2277 conditions per place. [2024-06-14 12:24:35,980 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 582 selfloop transitions, 23 changer transitions 0/608 dead transitions. [2024-06-14 12:24:35,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 641 places, 608 transitions, 7751 flow [2024-06-14 12:24:35,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:24:35,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:24:35,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-14 12:24:35,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33578431372549017 [2024-06-14 12:24:35,981 INFO L175 Difference]: Start difference. First operand has 630 places, 597 transitions, 6517 flow. Second operand 12 states and 137 transitions. [2024-06-14 12:24:35,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 641 places, 608 transitions, 7751 flow [2024-06-14 12:24:37,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 630 places, 608 transitions, 7555 flow, removed 53 selfloop flow, removed 11 redundant places. [2024-06-14 12:24:37,764 INFO L231 Difference]: Finished difference. Result has 631 places, 597 transitions, 6375 flow [2024-06-14 12:24:37,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6321, PETRI_DIFFERENCE_MINUEND_PLACES=619, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=597, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=574, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6375, PETRI_PLACES=631, PETRI_TRANSITIONS=597} [2024-06-14 12:24:37,764 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 598 predicate places. [2024-06-14 12:24:37,764 INFO L495 AbstractCegarLoop]: Abstraction has has 631 places, 597 transitions, 6375 flow [2024-06-14 12:24:37,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:24:37,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:24:37,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:24:37,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-14 12:24:37,764 INFO L420 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:24:37,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:24:37,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1126310730, now seen corresponding path program 1 times [2024-06-14 12:24:37,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:24:37,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155730823] [2024-06-14 12:24:37,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:24:37,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:24:37,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:24:38,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:24:38,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:24:38,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155730823] [2024-06-14 12:24:38,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155730823] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:24:38,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:24:38,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:24:38,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650362268] [2024-06-14 12:24:38,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:24:38,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:24:38,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:24:38,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:24:38,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:24:38,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:24:38,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 631 places, 597 transitions, 6375 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:24:38,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:24:38,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:24:38,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:24:39,613 INFO L124 PetriNetUnfolderBase]: 1361/2484 cut-off events. [2024-06-14 12:24:39,613 INFO L125 PetriNetUnfolderBase]: For 341981/341981 co-relation queries the response was YES. [2024-06-14 12:24:39,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17721 conditions, 2484 events. 1361/2484 cut-off events. For 341981/341981 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 16060 event pairs, 209 based on Foata normal form. 2/2486 useless extension candidates. Maximal degree in co-relation 17430. Up to 2231 conditions per place. [2024-06-14 12:24:39,660 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 580 selfloop transitions, 41 changer transitions 0/624 dead transitions. [2024-06-14 12:24:39,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 642 places, 624 transitions, 7705 flow [2024-06-14 12:24:39,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:24:39,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:24:39,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-14 12:24:39,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3700980392156863 [2024-06-14 12:24:39,661 INFO L175 Difference]: Start difference. First operand has 631 places, 597 transitions, 6375 flow. Second operand 12 states and 151 transitions. [2024-06-14 12:24:39,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 642 places, 624 transitions, 7705 flow [2024-06-14 12:24:41,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 628 places, 624 transitions, 7576 flow, removed 6 selfloop flow, removed 14 redundant places. [2024-06-14 12:24:41,472 INFO L231 Difference]: Finished difference. Result has 631 places, 600 transitions, 6368 flow [2024-06-14 12:24:41,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6248, PETRI_DIFFERENCE_MINUEND_PLACES=617, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=597, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=556, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6368, PETRI_PLACES=631, PETRI_TRANSITIONS=600} [2024-06-14 12:24:41,473 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 598 predicate places. [2024-06-14 12:24:41,473 INFO L495 AbstractCegarLoop]: Abstraction has has 631 places, 600 transitions, 6368 flow [2024-06-14 12:24:41,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:24:41,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:24:41,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:24:41,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-14 12:24:41,473 INFO L420 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:24:41,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:24:41,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1182382488, now seen corresponding path program 2 times [2024-06-14 12:24:41,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:24:41,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641151775] [2024-06-14 12:24:41,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:24:41,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:24:41,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:24:42,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:24:42,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:24:42,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641151775] [2024-06-14 12:24:42,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641151775] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:24:42,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:24:42,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:24:42,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835899924] [2024-06-14 12:24:42,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:24:42,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:24:42,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:24:42,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:24:42,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:24:42,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:24:42,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 631 places, 600 transitions, 6368 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:24:42,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:24:42,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:24:42,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:24:43,328 INFO L124 PetriNetUnfolderBase]: 1372/2505 cut-off events. [2024-06-14 12:24:43,328 INFO L125 PetriNetUnfolderBase]: For 374603/374603 co-relation queries the response was YES. [2024-06-14 12:24:43,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18128 conditions, 2505 events. 1372/2505 cut-off events. For 374603/374603 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 16220 event pairs, 218 based on Foata normal form. 2/2507 useless extension candidates. Maximal degree in co-relation 17837. Up to 2249 conditions per place. [2024-06-14 12:24:43,377 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 578 selfloop transitions, 44 changer transitions 0/625 dead transitions. [2024-06-14 12:24:43,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 642 places, 625 transitions, 8054 flow [2024-06-14 12:24:43,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:24:43,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:24:43,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-14 12:24:43,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 12:24:43,378 INFO L175 Difference]: Start difference. First operand has 631 places, 600 transitions, 6368 flow. Second operand 12 states and 153 transitions. [2024-06-14 12:24:43,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 642 places, 625 transitions, 8054 flow [2024-06-14 12:24:45,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 634 places, 625 transitions, 7964 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-14 12:24:45,513 INFO L231 Difference]: Finished difference. Result has 635 places, 602 transitions, 6408 flow [2024-06-14 12:24:45,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6278, PETRI_DIFFERENCE_MINUEND_PLACES=623, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=600, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=557, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6408, PETRI_PLACES=635, PETRI_TRANSITIONS=602} [2024-06-14 12:24:45,513 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 602 predicate places. [2024-06-14 12:24:45,513 INFO L495 AbstractCegarLoop]: Abstraction has has 635 places, 602 transitions, 6408 flow [2024-06-14 12:24:45,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:24:45,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:24:45,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:24:45,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-14 12:24:45,513 INFO L420 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:24:45,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:24:45,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1682596086, now seen corresponding path program 3 times [2024-06-14 12:24:45,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:24:45,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971192921] [2024-06-14 12:24:45,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:24:45,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:24:45,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:24:46,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:24:46,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:24:46,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971192921] [2024-06-14 12:24:46,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971192921] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:24:46,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:24:46,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:24:46,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123916722] [2024-06-14 12:24:46,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:24:46,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:24:46,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:24:46,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:24:46,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:24:46,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:24:46,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 635 places, 602 transitions, 6408 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:24:46,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:24:46,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:24:46,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:24:47,395 INFO L124 PetriNetUnfolderBase]: 1385/2532 cut-off events. [2024-06-14 12:24:47,395 INFO L125 PetriNetUnfolderBase]: For 380738/380738 co-relation queries the response was YES. [2024-06-14 12:24:47,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18263 conditions, 2532 events. 1385/2532 cut-off events. For 380738/380738 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 16495 event pairs, 196 based on Foata normal form. 2/2534 useless extension candidates. Maximal degree in co-relation 17971. Up to 2245 conditions per place. [2024-06-14 12:24:47,444 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 583 selfloop transitions, 43 changer transitions 0/629 dead transitions. [2024-06-14 12:24:47,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 646 places, 629 transitions, 7752 flow [2024-06-14 12:24:47,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:24:47,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:24:47,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-14 12:24:47,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36519607843137253 [2024-06-14 12:24:47,445 INFO L175 Difference]: Start difference. First operand has 635 places, 602 transitions, 6408 flow. Second operand 12 states and 149 transitions. [2024-06-14 12:24:47,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 646 places, 629 transitions, 7752 flow [2024-06-14 12:24:49,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 638 places, 629 transitions, 7674 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-14 12:24:49,381 INFO L231 Difference]: Finished difference. Result has 640 places, 605 transitions, 6458 flow [2024-06-14 12:24:49,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6330, PETRI_DIFFERENCE_MINUEND_PLACES=627, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=602, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=560, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6458, PETRI_PLACES=640, PETRI_TRANSITIONS=605} [2024-06-14 12:24:49,381 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 607 predicate places. [2024-06-14 12:24:49,381 INFO L495 AbstractCegarLoop]: Abstraction has has 640 places, 605 transitions, 6458 flow [2024-06-14 12:24:49,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:24:49,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:24:49,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:24:49,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-14 12:24:49,382 INFO L420 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:24:49,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:24:49,382 INFO L85 PathProgramCache]: Analyzing trace with hash 112839278, now seen corresponding path program 4 times [2024-06-14 12:24:49,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:24:49,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196472296] [2024-06-14 12:24:49,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:24:49,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:24:49,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:24:50,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:24:50,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:24:50,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196472296] [2024-06-14 12:24:50,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196472296] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:24:50,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:24:50,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:24:50,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672681273] [2024-06-14 12:24:50,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:24:50,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:24:50,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:24:50,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:24:50,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:24:50,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:24:50,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 640 places, 605 transitions, 6458 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:24:50,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:24:50,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:24:50,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:24:51,302 INFO L124 PetriNetUnfolderBase]: 1382/2527 cut-off events. [2024-06-14 12:24:51,302 INFO L125 PetriNetUnfolderBase]: For 353707/353707 co-relation queries the response was YES. [2024-06-14 12:24:51,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17953 conditions, 2527 events. 1382/2527 cut-off events. For 353707/353707 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 16455 event pairs, 231 based on Foata normal form. 2/2529 useless extension candidates. Maximal degree in co-relation 17658. Up to 2288 conditions per place. [2024-06-14 12:24:51,351 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 580 selfloop transitions, 43 changer transitions 0/626 dead transitions. [2024-06-14 12:24:51,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 651 places, 626 transitions, 7758 flow [2024-06-14 12:24:51,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:24:51,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:24:51,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-14 12:24:51,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36764705882352944 [2024-06-14 12:24:51,351 INFO L175 Difference]: Start difference. First operand has 640 places, 605 transitions, 6458 flow. Second operand 12 states and 150 transitions. [2024-06-14 12:24:51,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 651 places, 626 transitions, 7758 flow [2024-06-14 12:24:53,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 642 places, 626 transitions, 7633 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-14 12:24:53,751 INFO L231 Difference]: Finished difference. Result has 643 places, 605 transitions, 6423 flow [2024-06-14 12:24:53,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6333, PETRI_DIFFERENCE_MINUEND_PLACES=631, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=605, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=562, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6423, PETRI_PLACES=643, PETRI_TRANSITIONS=605} [2024-06-14 12:24:53,751 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 610 predicate places. [2024-06-14 12:24:53,751 INFO L495 AbstractCegarLoop]: Abstraction has has 643 places, 605 transitions, 6423 flow [2024-06-14 12:24:53,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:24:53,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:24:53,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:24:53,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-14 12:24:53,751 INFO L420 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:24:53,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:24:53,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1201938900, now seen corresponding path program 1 times [2024-06-14 12:24:53,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:24:53,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5367873] [2024-06-14 12:24:53,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:24:53,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:24:53,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:24:54,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:24:54,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:24:54,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5367873] [2024-06-14 12:24:54,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5367873] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:24:54,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:24:54,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:24:54,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658210894] [2024-06-14 12:24:54,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:24:54,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:24:54,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:24:54,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:24:54,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:24:54,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:24:54,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 643 places, 605 transitions, 6423 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:24:54,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:24:54,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:24:54,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:24:55,770 INFO L124 PetriNetUnfolderBase]: 1385/2532 cut-off events. [2024-06-14 12:24:55,770 INFO L125 PetriNetUnfolderBase]: For 342406/342406 co-relation queries the response was YES. [2024-06-14 12:24:55,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17950 conditions, 2532 events. 1385/2532 cut-off events. For 342406/342406 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 16478 event pairs, 230 based on Foata normal form. 1/2533 useless extension candidates. Maximal degree in co-relation 17655. Up to 2293 conditions per place. [2024-06-14 12:24:55,818 INFO L140 encePairwiseOnDemand]: 20/34 looper letters, 579 selfloop transitions, 46 changer transitions 0/628 dead transitions. [2024-06-14 12:24:55,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 655 places, 628 transitions, 7771 flow [2024-06-14 12:24:55,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:24:55,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:24:55,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 160 transitions. [2024-06-14 12:24:55,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36199095022624433 [2024-06-14 12:24:55,819 INFO L175 Difference]: Start difference. First operand has 643 places, 605 transitions, 6423 flow. Second operand 13 states and 160 transitions. [2024-06-14 12:24:55,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 655 places, 628 transitions, 7771 flow [2024-06-14 12:24:58,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 644 places, 628 transitions, 7683 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-14 12:24:58,146 INFO L231 Difference]: Finished difference. Result has 645 places, 607 transitions, 6480 flow [2024-06-14 12:24:58,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6335, PETRI_DIFFERENCE_MINUEND_PLACES=632, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=605, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=559, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6480, PETRI_PLACES=645, PETRI_TRANSITIONS=607} [2024-06-14 12:24:58,147 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 612 predicate places. [2024-06-14 12:24:58,147 INFO L495 AbstractCegarLoop]: Abstraction has has 645 places, 607 transitions, 6480 flow [2024-06-14 12:24:58,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:24:58,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:24:58,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:24:58,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-14 12:24:58,147 INFO L420 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:24:58,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:24:58,147 INFO L85 PathProgramCache]: Analyzing trace with hash 98050500, now seen corresponding path program 5 times [2024-06-14 12:24:58,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:24:58,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452646377] [2024-06-14 12:24:58,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:24:58,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:24:58,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:24:59,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:24:59,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:24:59,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452646377] [2024-06-14 12:24:59,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452646377] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:24:59,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:24:59,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:24:59,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947087558] [2024-06-14 12:24:59,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:24:59,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:24:59,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:24:59,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:24:59,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:24:59,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:24:59,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 645 places, 607 transitions, 6480 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:24:59,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:24:59,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:24:59,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:25:00,088 INFO L124 PetriNetUnfolderBase]: 1398/2559 cut-off events. [2024-06-14 12:25:00,088 INFO L125 PetriNetUnfolderBase]: For 361201/361201 co-relation queries the response was YES. [2024-06-14 12:25:00,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18117 conditions, 2559 events. 1398/2559 cut-off events. For 361201/361201 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 16744 event pairs, 236 based on Foata normal form. 2/2561 useless extension candidates. Maximal degree in co-relation 17821. Up to 2306 conditions per place. [2024-06-14 12:25:00,137 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 592 selfloop transitions, 38 changer transitions 0/633 dead transitions. [2024-06-14 12:25:00,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 656 places, 633 transitions, 7836 flow [2024-06-14 12:25:00,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:25:00,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:25:00,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-14 12:25:00,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3700980392156863 [2024-06-14 12:25:00,138 INFO L175 Difference]: Start difference. First operand has 645 places, 607 transitions, 6480 flow. Second operand 12 states and 151 transitions. [2024-06-14 12:25:00,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 656 places, 633 transitions, 7836 flow [2024-06-14 12:25:02,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 645 places, 633 transitions, 7707 flow, removed 20 selfloop flow, removed 11 redundant places. [2024-06-14 12:25:02,701 INFO L231 Difference]: Finished difference. Result has 648 places, 610 transitions, 6477 flow [2024-06-14 12:25:02,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6351, PETRI_DIFFERENCE_MINUEND_PLACES=634, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=569, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6477, PETRI_PLACES=648, PETRI_TRANSITIONS=610} [2024-06-14 12:25:02,702 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 615 predicate places. [2024-06-14 12:25:02,702 INFO L495 AbstractCegarLoop]: Abstraction has has 648 places, 610 transitions, 6477 flow [2024-06-14 12:25:02,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:25:02,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:25:02,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:25:02,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-14 12:25:02,702 INFO L420 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:25:02,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:25:02,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1071081700, now seen corresponding path program 6 times [2024-06-14 12:25:02,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:25:02,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974174153] [2024-06-14 12:25:02,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:25:02,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:25:02,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:25:03,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:25:03,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:25:03,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974174153] [2024-06-14 12:25:03,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974174153] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:25:03,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:25:03,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:25:03,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663227166] [2024-06-14 12:25:03,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:25:03,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:25:03,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:25:03,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:25:03,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:25:03,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:25:03,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 648 places, 610 transitions, 6477 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:25:03,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:25:03,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:25:03,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:25:04,653 INFO L124 PetriNetUnfolderBase]: 1409/2580 cut-off events. [2024-06-14 12:25:04,653 INFO L125 PetriNetUnfolderBase]: For 398608/398608 co-relation queries the response was YES. [2024-06-14 12:25:04,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18625 conditions, 2580 events. 1409/2580 cut-off events. For 398608/398608 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 16918 event pairs, 240 based on Foata normal form. 2/2582 useless extension candidates. Maximal degree in co-relation 18326. Up to 2324 conditions per place. [2024-06-14 12:25:04,700 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 590 selfloop transitions, 41 changer transitions 0/634 dead transitions. [2024-06-14 12:25:04,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 659 places, 634 transitions, 8201 flow [2024-06-14 12:25:04,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:25:04,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:25:04,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-14 12:25:04,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 12:25:04,701 INFO L175 Difference]: Start difference. First operand has 648 places, 610 transitions, 6477 flow. Second operand 12 states and 153 transitions. [2024-06-14 12:25:04,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 659 places, 634 transitions, 8201 flow [2024-06-14 12:25:07,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 651 places, 634 transitions, 8105 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-14 12:25:07,509 INFO L231 Difference]: Finished difference. Result has 652 places, 612 transitions, 6517 flow [2024-06-14 12:25:07,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6381, PETRI_DIFFERENCE_MINUEND_PLACES=640, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=610, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=570, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6517, PETRI_PLACES=652, PETRI_TRANSITIONS=612} [2024-06-14 12:25:07,509 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 619 predicate places. [2024-06-14 12:25:07,509 INFO L495 AbstractCegarLoop]: Abstraction has has 652 places, 612 transitions, 6517 flow [2024-06-14 12:25:07,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:25:07,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:25:07,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:25:07,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-14 12:25:07,509 INFO L420 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:25:07,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:25:07,510 INFO L85 PathProgramCache]: Analyzing trace with hash -213327826, now seen corresponding path program 7 times [2024-06-14 12:25:07,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:25:07,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628204051] [2024-06-14 12:25:07,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:25:07,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:25:07,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:25:08,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:25:08,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:25:08,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628204051] [2024-06-14 12:25:08,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628204051] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:25:08,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:25:08,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:25:08,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286723905] [2024-06-14 12:25:08,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:25:08,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:25:08,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:25:08,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:25:08,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:25:08,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:25:08,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 652 places, 612 transitions, 6517 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:25:08,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:25:08,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:25:08,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:25:09,548 INFO L124 PetriNetUnfolderBase]: 1416/2591 cut-off events. [2024-06-14 12:25:09,548 INFO L125 PetriNetUnfolderBase]: For 403410/403410 co-relation queries the response was YES. [2024-06-14 12:25:09,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18732 conditions, 2591 events. 1416/2591 cut-off events. For 403410/403410 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 17005 event pairs, 247 based on Foata normal form. 2/2593 useless extension candidates. Maximal degree in co-relation 18432. Up to 2371 conditions per place. [2024-06-14 12:25:09,600 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 596 selfloop transitions, 36 changer transitions 0/635 dead transitions. [2024-06-14 12:25:09,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 663 places, 635 transitions, 7900 flow [2024-06-14 12:25:09,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:25:09,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:25:09,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-14 12:25:09,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36519607843137253 [2024-06-14 12:25:09,601 INFO L175 Difference]: Start difference. First operand has 652 places, 612 transitions, 6517 flow. Second operand 12 states and 149 transitions. [2024-06-14 12:25:09,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 663 places, 635 transitions, 7900 flow [2024-06-14 12:25:12,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 655 places, 635 transitions, 7820 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-14 12:25:12,529 INFO L231 Difference]: Finished difference. Result has 657 places, 616 transitions, 6593 flow [2024-06-14 12:25:12,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6437, PETRI_DIFFERENCE_MINUEND_PLACES=644, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=612, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=578, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6593, PETRI_PLACES=657, PETRI_TRANSITIONS=616} [2024-06-14 12:25:12,529 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 624 predicate places. [2024-06-14 12:25:12,529 INFO L495 AbstractCegarLoop]: Abstraction has has 657 places, 616 transitions, 6593 flow [2024-06-14 12:25:12,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:25:12,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:25:12,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:25:12,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-14 12:25:12,529 INFO L420 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:25:12,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:25:12,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1378370084, now seen corresponding path program 8 times [2024-06-14 12:25:12,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:25:12,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981656692] [2024-06-14 12:25:12,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:25:12,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:25:12,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:25:13,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:25:13,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:25:13,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981656692] [2024-06-14 12:25:13,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981656692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:25:13,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:25:13,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:25:13,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570244643] [2024-06-14 12:25:13,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:25:13,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:25:13,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:25:13,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:25:13,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:25:13,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:25:13,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 657 places, 616 transitions, 6593 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:25:13,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:25:13,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:25:13,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:25:14,580 INFO L124 PetriNetUnfolderBase]: 1413/2590 cut-off events. [2024-06-14 12:25:14,580 INFO L125 PetriNetUnfolderBase]: For 375946/375946 co-relation queries the response was YES. [2024-06-14 12:25:14,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18607 conditions, 2590 events. 1413/2590 cut-off events. For 375946/375946 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 17049 event pairs, 245 based on Foata normal form. 2/2592 useless extension candidates. Maximal degree in co-relation 18304. Up to 2349 conditions per place. [2024-06-14 12:25:14,632 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 593 selfloop transitions, 40 changer transitions 0/636 dead transitions. [2024-06-14 12:25:14,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 668 places, 636 transitions, 7911 flow [2024-06-14 12:25:14,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:25:14,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:25:14,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-14 12:25:14,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36764705882352944 [2024-06-14 12:25:14,632 INFO L175 Difference]: Start difference. First operand has 657 places, 616 transitions, 6593 flow. Second operand 12 states and 150 transitions. [2024-06-14 12:25:14,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 668 places, 636 transitions, 7911 flow [2024-06-14 12:25:17,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 659 places, 636 transitions, 7793 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-14 12:25:17,259 INFO L231 Difference]: Finished difference. Result has 660 places, 616 transitions, 6559 flow [2024-06-14 12:25:17,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6475, PETRI_DIFFERENCE_MINUEND_PLACES=648, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=616, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=576, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6559, PETRI_PLACES=660, PETRI_TRANSITIONS=616} [2024-06-14 12:25:17,259 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 627 predicate places. [2024-06-14 12:25:17,259 INFO L495 AbstractCegarLoop]: Abstraction has has 660 places, 616 transitions, 6559 flow [2024-06-14 12:25:17,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:25:17,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:25:17,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:25:17,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-14 12:25:17,260 INFO L420 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:25:17,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:25:17,260 INFO L85 PathProgramCache]: Analyzing trace with hash -350575644, now seen corresponding path program 9 times [2024-06-14 12:25:17,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:25:17,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958757572] [2024-06-14 12:25:17,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:25:17,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:25:17,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:25:18,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:25:18,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:25:18,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958757572] [2024-06-14 12:25:18,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958757572] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:25:18,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:25:18,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:25:18,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828277888] [2024-06-14 12:25:18,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:25:18,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:25:18,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:25:18,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:25:18,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:25:18,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:25:18,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 660 places, 616 transitions, 6559 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:25:18,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:25:18,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:25:18,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:25:19,199 INFO L124 PetriNetUnfolderBase]: 1417/2595 cut-off events. [2024-06-14 12:25:19,199 INFO L125 PetriNetUnfolderBase]: For 379818/379818 co-relation queries the response was YES. [2024-06-14 12:25:19,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18619 conditions, 2595 events. 1417/2595 cut-off events. For 379818/379818 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 17076 event pairs, 250 based on Foata normal form. 2/2597 useless extension candidates. Maximal degree in co-relation 18315. Up to 2374 conditions per place. [2024-06-14 12:25:19,250 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 597 selfloop transitions, 37 changer transitions 0/637 dead transitions. [2024-06-14 12:25:19,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 671 places, 637 transitions, 7922 flow [2024-06-14 12:25:19,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:25:19,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:25:19,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-14 12:25:19,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36519607843137253 [2024-06-14 12:25:19,251 INFO L175 Difference]: Start difference. First operand has 660 places, 616 transitions, 6559 flow. Second operand 12 states and 149 transitions. [2024-06-14 12:25:19,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 671 places, 637 transitions, 7922 flow [2024-06-14 12:25:22,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 660 places, 637 transitions, 7840 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-14 12:25:22,069 INFO L231 Difference]: Finished difference. Result has 661 places, 618 transitions, 6604 flow [2024-06-14 12:25:22,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6477, PETRI_DIFFERENCE_MINUEND_PLACES=649, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=616, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=580, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6604, PETRI_PLACES=661, PETRI_TRANSITIONS=618} [2024-06-14 12:25:22,070 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 628 predicate places. [2024-06-14 12:25:22,070 INFO L495 AbstractCegarLoop]: Abstraction has has 661 places, 618 transitions, 6604 flow [2024-06-14 12:25:22,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:25:22,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:25:22,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:25:22,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2024-06-14 12:25:22,070 INFO L420 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:25:22,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:25:22,070 INFO L85 PathProgramCache]: Analyzing trace with hash 79650726, now seen corresponding path program 10 times [2024-06-14 12:25:22,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:25:22,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210213522] [2024-06-14 12:25:22,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:25:22,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:25:22,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:25:23,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:25:23,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:25:23,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210213522] [2024-06-14 12:25:23,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210213522] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:25:23,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:25:23,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:25:23,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650741997] [2024-06-14 12:25:23,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:25:23,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:25:23,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:25:23,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:25:23,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:25:23,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:25:23,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 661 places, 618 transitions, 6604 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:25:23,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:25:23,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:25:23,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:25:24,004 INFO L124 PetriNetUnfolderBase]: 1421/2602 cut-off events. [2024-06-14 12:25:24,004 INFO L125 PetriNetUnfolderBase]: For 384039/384039 co-relation queries the response was YES. [2024-06-14 12:25:24,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18713 conditions, 2602 events. 1421/2602 cut-off events. For 384039/384039 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 17112 event pairs, 248 based on Foata normal form. 2/2604 useless extension candidates. Maximal degree in co-relation 18408. Up to 2362 conditions per place. [2024-06-14 12:25:24,056 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 597 selfloop transitions, 39 changer transitions 0/639 dead transitions. [2024-06-14 12:25:24,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 672 places, 639 transitions, 7956 flow [2024-06-14 12:25:24,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:25:24,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:25:24,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-14 12:25:24,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36764705882352944 [2024-06-14 12:25:24,057 INFO L175 Difference]: Start difference. First operand has 661 places, 618 transitions, 6604 flow. Second operand 12 states and 150 transitions. [2024-06-14 12:25:24,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 672 places, 639 transitions, 7956 flow [2024-06-14 12:25:27,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 664 places, 639 transitions, 7865 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-14 12:25:27,084 INFO L231 Difference]: Finished difference. Result has 665 places, 619 transitions, 6627 flow [2024-06-14 12:25:27,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6513, PETRI_DIFFERENCE_MINUEND_PLACES=653, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=579, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6627, PETRI_PLACES=665, PETRI_TRANSITIONS=619} [2024-06-14 12:25:27,084 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 632 predicate places. [2024-06-14 12:25:27,085 INFO L495 AbstractCegarLoop]: Abstraction has has 665 places, 619 transitions, 6627 flow [2024-06-14 12:25:27,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:25:27,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:25:27,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:25:27,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2024-06-14 12:25:27,085 INFO L420 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:25:27,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:25:27,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1246490598, now seen corresponding path program 2 times [2024-06-14 12:25:27,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:25:27,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540989618] [2024-06-14 12:25:27,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:25:27,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:25:27,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:25:28,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:25:28,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:25:28,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540989618] [2024-06-14 12:25:28,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540989618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:25:28,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:25:28,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:25:28,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257640416] [2024-06-14 12:25:28,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:25:28,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:25:28,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:25:28,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:25:28,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:25:28,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:25:28,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 665 places, 619 transitions, 6627 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:25:28,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:25:28,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:25:28,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:25:29,124 INFO L124 PetriNetUnfolderBase]: 1424/2609 cut-off events. [2024-06-14 12:25:29,124 INFO L125 PetriNetUnfolderBase]: For 371321/371321 co-relation queries the response was YES. [2024-06-14 12:25:29,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18765 conditions, 2609 events. 1424/2609 cut-off events. For 371321/371321 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 17172 event pairs, 252 based on Foata normal form. 1/2610 useless extension candidates. Maximal degree in co-relation 18459. Up to 2370 conditions per place. [2024-06-14 12:25:29,175 INFO L140 encePairwiseOnDemand]: 20/34 looper letters, 595 selfloop transitions, 43 changer transitions 0/641 dead transitions. [2024-06-14 12:25:29,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 677 places, 641 transitions, 8003 flow [2024-06-14 12:25:29,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:25:29,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:25:29,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 160 transitions. [2024-06-14 12:25:29,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36199095022624433 [2024-06-14 12:25:29,176 INFO L175 Difference]: Start difference. First operand has 665 places, 619 transitions, 6627 flow. Second operand 13 states and 160 transitions. [2024-06-14 12:25:29,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 677 places, 641 transitions, 8003 flow [2024-06-14 12:25:31,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 667 places, 641 transitions, 7899 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-14 12:25:31,888 INFO L231 Difference]: Finished difference. Result has 668 places, 621 transitions, 6666 flow [2024-06-14 12:25:31,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6523, PETRI_DIFFERENCE_MINUEND_PLACES=655, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=619, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=576, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6666, PETRI_PLACES=668, PETRI_TRANSITIONS=621} [2024-06-14 12:25:31,888 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 635 predicate places. [2024-06-14 12:25:31,888 INFO L495 AbstractCegarLoop]: Abstraction has has 668 places, 621 transitions, 6666 flow [2024-06-14 12:25:31,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:25:31,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:25:31,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:25:31,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2024-06-14 12:25:31,888 INFO L420 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:25:31,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:25:31,889 INFO L85 PathProgramCache]: Analyzing trace with hash -344997783, now seen corresponding path program 1 times [2024-06-14 12:25:31,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:25:31,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657028152] [2024-06-14 12:25:31,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:25:31,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:25:31,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:25:33,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:25:33,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:25:33,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657028152] [2024-06-14 12:25:33,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657028152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:25:33,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:25:33,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:25:33,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62259772] [2024-06-14 12:25:33,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:25:33,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:25:33,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:25:33,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:25:33,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:25:33,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:25:33,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 668 places, 621 transitions, 6666 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:25:33,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:25:33,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:25:33,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:25:34,091 INFO L124 PetriNetUnfolderBase]: 1427/2611 cut-off events. [2024-06-14 12:25:34,091 INFO L125 PetriNetUnfolderBase]: For 378343/378343 co-relation queries the response was YES. [2024-06-14 12:25:34,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18824 conditions, 2611 events. 1427/2611 cut-off events. For 378343/378343 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 17164 event pairs, 258 based on Foata normal form. 1/2612 useless extension candidates. Maximal degree in co-relation 18517. Up to 2398 conditions per place. [2024-06-14 12:25:34,142 INFO L140 encePairwiseOnDemand]: 20/34 looper letters, 606 selfloop transitions, 37 changer transitions 0/646 dead transitions. [2024-06-14 12:25:34,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 680 places, 646 transitions, 8111 flow [2024-06-14 12:25:34,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:25:34,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:25:34,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 157 transitions. [2024-06-14 12:25:34,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3552036199095023 [2024-06-14 12:25:34,143 INFO L175 Difference]: Start difference. First operand has 668 places, 621 transitions, 6666 flow. Second operand 13 states and 157 transitions. [2024-06-14 12:25:34,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 680 places, 646 transitions, 8111 flow [2024-06-14 12:25:37,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 669 places, 646 transitions, 7984 flow, removed 22 selfloop flow, removed 11 redundant places. [2024-06-14 12:25:37,086 INFO L231 Difference]: Finished difference. Result has 672 places, 627 transitions, 6743 flow [2024-06-14 12:25:37,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6539, PETRI_DIFFERENCE_MINUEND_PLACES=657, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=621, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=586, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6743, PETRI_PLACES=672, PETRI_TRANSITIONS=627} [2024-06-14 12:25:37,086 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 639 predicate places. [2024-06-14 12:25:37,086 INFO L495 AbstractCegarLoop]: Abstraction has has 672 places, 627 transitions, 6743 flow [2024-06-14 12:25:37,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:25:37,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:25:37,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:25:37,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2024-06-14 12:25:37,087 INFO L420 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:25:37,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:25:37,087 INFO L85 PathProgramCache]: Analyzing trace with hash -2061599110, now seen corresponding path program 11 times [2024-06-14 12:25:37,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:25:37,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346585107] [2024-06-14 12:25:37,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:25:37,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:25:37,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:25:38,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:25:38,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:25:38,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346585107] [2024-06-14 12:25:38,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346585107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:25:38,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:25:38,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:25:38,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311797529] [2024-06-14 12:25:38,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:25:38,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:25:38,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:25:38,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:25:38,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:25:38,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:25:38,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 672 places, 627 transitions, 6743 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:25:38,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:25:38,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:25:38,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:25:39,109 INFO L124 PetriNetUnfolderBase]: 1438/2636 cut-off events. [2024-06-14 12:25:39,109 INFO L125 PetriNetUnfolderBase]: For 432640/432640 co-relation queries the response was YES. [2024-06-14 12:25:39,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19614 conditions, 2636 events. 1438/2636 cut-off events. For 432640/432640 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 17422 event pairs, 256 based on Foata normal form. 2/2638 useless extension candidates. Maximal degree in co-relation 19304. Up to 2379 conditions per place. [2024-06-14 12:25:39,160 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 608 selfloop transitions, 39 changer transitions 0/650 dead transitions. [2024-06-14 12:25:39,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 683 places, 650 transitions, 8527 flow [2024-06-14 12:25:39,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:25:39,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:25:39,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-14 12:25:39,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 12:25:39,161 INFO L175 Difference]: Start difference. First operand has 672 places, 627 transitions, 6743 flow. Second operand 12 states and 153 transitions. [2024-06-14 12:25:39,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 683 places, 650 transitions, 8527 flow [2024-06-14 12:25:42,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 673 places, 650 transitions, 8381 flow, removed 41 selfloop flow, removed 10 redundant places. [2024-06-14 12:25:42,425 INFO L231 Difference]: Finished difference. Result has 674 places, 629 transitions, 6745 flow [2024-06-14 12:25:42,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6597, PETRI_DIFFERENCE_MINUEND_PLACES=662, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=589, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6745, PETRI_PLACES=674, PETRI_TRANSITIONS=629} [2024-06-14 12:25:42,426 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 641 predicate places. [2024-06-14 12:25:42,426 INFO L495 AbstractCegarLoop]: Abstraction has has 674 places, 629 transitions, 6745 flow [2024-06-14 12:25:42,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:25:42,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:25:42,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:25:42,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2024-06-14 12:25:42,427 INFO L420 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:25:42,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:25:42,427 INFO L85 PathProgramCache]: Analyzing trace with hash -805097698, now seen corresponding path program 12 times [2024-06-14 12:25:42,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:25:42,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29646726] [2024-06-14 12:25:42,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:25:42,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:25:42,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:25:43,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:25:43,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:25:43,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29646726] [2024-06-14 12:25:43,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29646726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:25:43,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:25:43,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:25:43,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811545935] [2024-06-14 12:25:43,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:25:43,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:25:43,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:25:43,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:25:43,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:25:43,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:25:43,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 674 places, 629 transitions, 6745 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:25:43,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:25:43,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:25:43,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:25:44,316 INFO L124 PetriNetUnfolderBase]: 1451/2661 cut-off events. [2024-06-14 12:25:44,316 INFO L125 PetriNetUnfolderBase]: For 439268/439268 co-relation queries the response was YES. [2024-06-14 12:25:44,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19525 conditions, 2661 events. 1451/2661 cut-off events. For 439268/439268 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 17626 event pairs, 265 based on Foata normal form. 2/2663 useless extension candidates. Maximal degree in co-relation 19214. Up to 2425 conditions per place. [2024-06-14 12:25:44,368 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 620 selfloop transitions, 31 changer transitions 0/654 dead transitions. [2024-06-14 12:25:44,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 685 places, 654 transitions, 8157 flow [2024-06-14 12:25:44,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:25:44,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:25:44,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-14 12:25:44,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36764705882352944 [2024-06-14 12:25:44,369 INFO L175 Difference]: Start difference. First operand has 674 places, 629 transitions, 6745 flow. Second operand 12 states and 150 transitions. [2024-06-14 12:25:44,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 685 places, 654 transitions, 8157 flow [2024-06-14 12:25:47,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 677 places, 654 transitions, 8071 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-14 12:25:47,524 INFO L231 Difference]: Finished difference. Result has 680 places, 632 transitions, 6787 flow [2024-06-14 12:25:47,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6659, PETRI_DIFFERENCE_MINUEND_PLACES=666, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=598, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6787, PETRI_PLACES=680, PETRI_TRANSITIONS=632} [2024-06-14 12:25:47,524 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 647 predicate places. [2024-06-14 12:25:47,524 INFO L495 AbstractCegarLoop]: Abstraction has has 680 places, 632 transitions, 6787 flow [2024-06-14 12:25:47,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:25:47,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:25:47,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:25:47,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2024-06-14 12:25:47,525 INFO L420 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:25:47,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:25:47,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1926375542, now seen corresponding path program 13 times [2024-06-14 12:25:47,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:25:47,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084579127] [2024-06-14 12:25:47,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:25:47,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:25:47,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:25:48,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:25:48,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:25:48,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084579127] [2024-06-14 12:25:48,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084579127] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:25:48,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:25:48,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:25:48,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856091873] [2024-06-14 12:25:48,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:25:48,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:25:48,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:25:48,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:25:48,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:25:48,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:25:48,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 680 places, 632 transitions, 6787 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:25:48,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:25:48,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:25:48,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:25:49,515 INFO L124 PetriNetUnfolderBase]: 1448/2656 cut-off events. [2024-06-14 12:25:49,515 INFO L125 PetriNetUnfolderBase]: For 408152/408152 co-relation queries the response was YES. [2024-06-14 12:25:49,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19131 conditions, 2656 events. 1448/2656 cut-off events. For 408152/408152 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 17616 event pairs, 264 based on Foata normal form. 2/2658 useless extension candidates. Maximal degree in co-relation 18816. Up to 2418 conditions per place. [2024-06-14 12:25:49,570 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 611 selfloop transitions, 37 changer transitions 0/651 dead transitions. [2024-06-14 12:25:49,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 690 places, 651 transitions, 8133 flow [2024-06-14 12:25:49,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:25:49,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:25:49,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-14 12:25:49,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38235294117647056 [2024-06-14 12:25:49,572 INFO L175 Difference]: Start difference. First operand has 680 places, 632 transitions, 6787 flow. Second operand 11 states and 143 transitions. [2024-06-14 12:25:49,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 690 places, 651 transitions, 8133 flow [2024-06-14 12:25:52,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 682 places, 651 transitions, 8013 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-14 12:25:52,302 INFO L231 Difference]: Finished difference. Result has 683 places, 632 transitions, 6745 flow [2024-06-14 12:25:52,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6667, PETRI_DIFFERENCE_MINUEND_PLACES=672, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=632, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=595, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6745, PETRI_PLACES=683, PETRI_TRANSITIONS=632} [2024-06-14 12:25:52,302 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 650 predicate places. [2024-06-14 12:25:52,302 INFO L495 AbstractCegarLoop]: Abstraction has has 683 places, 632 transitions, 6745 flow [2024-06-14 12:25:52,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:25:52,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:25:52,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:25:52,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2024-06-14 12:25:52,303 INFO L420 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:25:52,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:25:52,303 INFO L85 PathProgramCache]: Analyzing trace with hash 636311616, now seen corresponding path program 14 times [2024-06-14 12:25:52,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:25:52,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805488684] [2024-06-14 12:25:52,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:25:52,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:25:52,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:25:53,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:25:53,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:25:53,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805488684] [2024-06-14 12:25:53,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805488684] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:25:53,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:25:53,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:25:53,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616196235] [2024-06-14 12:25:53,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:25:53,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:25:53,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:25:53,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:25:53,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:25:53,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:25:53,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 683 places, 632 transitions, 6745 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:25:53,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:25:53,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:25:53,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:25:54,339 INFO L124 PetriNetUnfolderBase]: 1455/2670 cut-off events. [2024-06-14 12:25:54,339 INFO L125 PetriNetUnfolderBase]: For 412159/412159 co-relation queries the response was YES. [2024-06-14 12:25:54,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19178 conditions, 2670 events. 1455/2670 cut-off events. For 412159/412159 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 17739 event pairs, 271 based on Foata normal form. 2/2672 useless extension candidates. Maximal degree in co-relation 18863. Up to 2448 conditions per place. [2024-06-14 12:25:54,393 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 617 selfloop transitions, 35 changer transitions 0/655 dead transitions. [2024-06-14 12:25:54,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 694 places, 655 transitions, 8196 flow [2024-06-14 12:25:54,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:25:54,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:25:54,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-14 12:25:54,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36519607843137253 [2024-06-14 12:25:54,393 INFO L175 Difference]: Start difference. First operand has 683 places, 632 transitions, 6745 flow. Second operand 12 states and 149 transitions. [2024-06-14 12:25:54,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 694 places, 655 transitions, 8196 flow [2024-06-14 12:25:57,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 684 places, 655 transitions, 8120 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-14 12:25:57,436 INFO L231 Difference]: Finished difference. Result has 686 places, 637 transitions, 6852 flow [2024-06-14 12:25:57,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6669, PETRI_DIFFERENCE_MINUEND_PLACES=673, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=632, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=600, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6852, PETRI_PLACES=686, PETRI_TRANSITIONS=637} [2024-06-14 12:25:57,436 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 653 predicate places. [2024-06-14 12:25:57,436 INFO L495 AbstractCegarLoop]: Abstraction has has 686 places, 637 transitions, 6852 flow [2024-06-14 12:25:57,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:25:57,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:25:57,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:25:57,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2024-06-14 12:25:57,436 INFO L420 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:25:57,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:25:57,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1066682136, now seen corresponding path program 15 times [2024-06-14 12:25:57,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:25:57,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363229914] [2024-06-14 12:25:57,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:25:57,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:25:57,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:25:58,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:25:58,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:25:58,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363229914] [2024-06-14 12:25:58,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363229914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:25:58,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:25:58,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:25:58,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741123096] [2024-06-14 12:25:58,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:25:58,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:25:58,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:25:58,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:25:58,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:25:58,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:25:58,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 686 places, 637 transitions, 6852 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:25:58,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:25:58,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:25:58,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:25:59,375 INFO L124 PetriNetUnfolderBase]: 1466/2693 cut-off events. [2024-06-14 12:25:59,375 INFO L125 PetriNetUnfolderBase]: For 455334/455334 co-relation queries the response was YES. [2024-06-14 12:25:59,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20036 conditions, 2693 events. 1466/2693 cut-off events. For 455334/455334 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 17943 event pairs, 272 based on Foata normal form. 2/2695 useless extension candidates. Maximal degree in co-relation 19718. Up to 2446 conditions per place. [2024-06-14 12:25:59,432 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 619 selfloop transitions, 37 changer transitions 0/659 dead transitions. [2024-06-14 12:25:59,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 697 places, 659 transitions, 8670 flow [2024-06-14 12:25:59,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:25:59,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:25:59,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-14 12:25:59,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3700980392156863 [2024-06-14 12:25:59,433 INFO L175 Difference]: Start difference. First operand has 686 places, 637 transitions, 6852 flow. Second operand 12 states and 151 transitions. [2024-06-14 12:25:59,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 697 places, 659 transitions, 8670 flow [2024-06-14 12:26:02,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 690 places, 659 transitions, 8571 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-14 12:26:02,593 INFO L231 Difference]: Finished difference. Result has 691 places, 639 transitions, 6909 flow [2024-06-14 12:26:02,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6753, PETRI_DIFFERENCE_MINUEND_PLACES=679, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=637, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=601, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6909, PETRI_PLACES=691, PETRI_TRANSITIONS=639} [2024-06-14 12:26:02,593 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 658 predicate places. [2024-06-14 12:26:02,593 INFO L495 AbstractCegarLoop]: Abstraction has has 691 places, 639 transitions, 6909 flow [2024-06-14 12:26:02,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:26:02,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:26:02,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:26:02,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2024-06-14 12:26:02,594 INFO L420 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:26:02,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:26:02,594 INFO L85 PathProgramCache]: Analyzing trace with hash -394546330, now seen corresponding path program 16 times [2024-06-14 12:26:02,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:26:02,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129771547] [2024-06-14 12:26:02,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:26:02,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:26:02,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:26:03,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:26:03,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:26:03,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129771547] [2024-06-14 12:26:03,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129771547] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:26:03,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:26:03,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:26:03,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122042072] [2024-06-14 12:26:03,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:26:03,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:26:03,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:26:03,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:26:03,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:26:03,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:26:03,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 691 places, 639 transitions, 6909 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:26:03,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:26:03,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:26:03,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:26:04,494 INFO L124 PetriNetUnfolderBase]: 1463/2686 cut-off events. [2024-06-14 12:26:04,494 INFO L125 PetriNetUnfolderBase]: For 423253/423253 co-relation queries the response was YES. [2024-06-14 12:26:04,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19582 conditions, 2686 events. 1463/2686 cut-off events. For 423253/423253 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 17856 event pairs, 274 based on Foata normal form. 2/2688 useless extension candidates. Maximal degree in co-relation 19263. Up to 2464 conditions per place. [2024-06-14 12:26:04,550 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 619 selfloop transitions, 35 changer transitions 0/657 dead transitions. [2024-06-14 12:26:04,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 702 places, 657 transitions, 8263 flow [2024-06-14 12:26:04,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:26:04,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:26:04,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-14 12:26:04,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36519607843137253 [2024-06-14 12:26:04,550 INFO L175 Difference]: Start difference. First operand has 691 places, 639 transitions, 6909 flow. Second operand 12 states and 149 transitions. [2024-06-14 12:26:04,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 702 places, 657 transitions, 8263 flow [2024-06-14 12:26:07,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 694 places, 657 transitions, 8148 flow, removed 35 selfloop flow, removed 8 redundant places. [2024-06-14 12:26:07,929 INFO L231 Difference]: Finished difference. Result has 695 places, 639 transitions, 6868 flow [2024-06-14 12:26:07,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6794, PETRI_DIFFERENCE_MINUEND_PLACES=683, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=639, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=604, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6868, PETRI_PLACES=695, PETRI_TRANSITIONS=639} [2024-06-14 12:26:07,929 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 662 predicate places. [2024-06-14 12:26:07,929 INFO L495 AbstractCegarLoop]: Abstraction has has 695 places, 639 transitions, 6868 flow [2024-06-14 12:26:07,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:26:07,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:26:07,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:26:07,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2024-06-14 12:26:07,930 INFO L420 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:26:07,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:26:07,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1240383456, now seen corresponding path program 3 times [2024-06-14 12:26:07,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:26:07,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299565991] [2024-06-14 12:26:07,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:26:07,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:26:07,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:26:09,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:26:09,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:26:09,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299565991] [2024-06-14 12:26:09,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299565991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:26:09,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:26:09,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:26:09,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684756379] [2024-06-14 12:26:09,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:26:09,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:26:09,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:26:09,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:26:09,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:26:09,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:26:09,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 695 places, 639 transitions, 6868 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:26:09,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:26:09,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:26:09,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:26:10,037 INFO L124 PetriNetUnfolderBase]: 1466/2692 cut-off events. [2024-06-14 12:26:10,037 INFO L125 PetriNetUnfolderBase]: For 408057/408057 co-relation queries the response was YES. [2024-06-14 12:26:10,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19578 conditions, 2692 events. 1466/2692 cut-off events. For 408057/408057 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 17944 event pairs, 277 based on Foata normal form. 1/2693 useless extension candidates. Maximal degree in co-relation 19257. Up to 2468 conditions per place. [2024-06-14 12:26:10,096 INFO L140 encePairwiseOnDemand]: 20/34 looper letters, 621 selfloop transitions, 36 changer transitions 0/660 dead transitions. [2024-06-14 12:26:10,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 707 places, 660 transitions, 8284 flow [2024-06-14 12:26:10,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:26:10,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:26:10,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 159 transitions. [2024-06-14 12:26:10,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3597285067873303 [2024-06-14 12:26:10,097 INFO L175 Difference]: Start difference. First operand has 695 places, 639 transitions, 6868 flow. Second operand 13 states and 159 transitions. [2024-06-14 12:26:10,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 707 places, 660 transitions, 8284 flow [2024-06-14 12:26:13,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 696 places, 660 transitions, 8202 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 12:26:13,418 INFO L231 Difference]: Finished difference. Result has 697 places, 641 transitions, 6919 flow [2024-06-14 12:26:13,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6786, PETRI_DIFFERENCE_MINUEND_PLACES=684, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=639, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=603, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6919, PETRI_PLACES=697, PETRI_TRANSITIONS=641} [2024-06-14 12:26:13,419 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 664 predicate places. [2024-06-14 12:26:13,419 INFO L495 AbstractCegarLoop]: Abstraction has has 697 places, 641 transitions, 6919 flow [2024-06-14 12:26:13,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:26:13,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:26:13,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:26:13,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2024-06-14 12:26:13,419 INFO L420 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:26:13,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:26:13,419 INFO L85 PathProgramCache]: Analyzing trace with hash -61306617, now seen corresponding path program 2 times [2024-06-14 12:26:13,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:26:13,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122924495] [2024-06-14 12:26:13,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:26:13,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:26:13,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:26:14,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:26:14,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:26:14,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122924495] [2024-06-14 12:26:14,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122924495] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:26:14,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:26:14,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:26:14,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125803667] [2024-06-14 12:26:14,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:26:14,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:26:14,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:26:14,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:26:14,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:26:14,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:26:14,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 697 places, 641 transitions, 6919 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:26:14,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:26:14,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:26:14,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:26:15,446 INFO L124 PetriNetUnfolderBase]: 1469/2694 cut-off events. [2024-06-14 12:26:15,446 INFO L125 PetriNetUnfolderBase]: For 412541/412541 co-relation queries the response was YES. [2024-06-14 12:26:15,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19681 conditions, 2694 events. 1469/2694 cut-off events. For 412541/412541 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 17914 event pairs, 279 based on Foata normal form. 1/2695 useless extension candidates. Maximal degree in co-relation 19359. Up to 2480 conditions per place. [2024-06-14 12:26:15,502 INFO L140 encePairwiseOnDemand]: 20/34 looper letters, 627 selfloop transitions, 35 changer transitions 0/665 dead transitions. [2024-06-14 12:26:15,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 709 places, 665 transitions, 8408 flow [2024-06-14 12:26:15,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:26:15,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:26:15,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 157 transitions. [2024-06-14 12:26:15,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3552036199095023 [2024-06-14 12:26:15,503 INFO L175 Difference]: Start difference. First operand has 697 places, 641 transitions, 6919 flow. Second operand 13 states and 157 transitions. [2024-06-14 12:26:15,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 709 places, 665 transitions, 8408 flow [2024-06-14 12:26:18,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 699 places, 665 transitions, 8294 flow, removed 24 selfloop flow, removed 10 redundant places. [2024-06-14 12:26:18,663 INFO L231 Difference]: Finished difference. Result has 702 places, 647 transitions, 7013 flow [2024-06-14 12:26:18,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6805, PETRI_DIFFERENCE_MINUEND_PLACES=687, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=641, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=608, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7013, PETRI_PLACES=702, PETRI_TRANSITIONS=647} [2024-06-14 12:26:18,663 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 669 predicate places. [2024-06-14 12:26:18,663 INFO L495 AbstractCegarLoop]: Abstraction has has 702 places, 647 transitions, 7013 flow [2024-06-14 12:26:18,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:26:18,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:26:18,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:26:18,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2024-06-14 12:26:18,664 INFO L420 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:26:18,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:26:18,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1829948408, now seen corresponding path program 17 times [2024-06-14 12:26:18,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:26:18,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154973405] [2024-06-14 12:26:18,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:26:18,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:26:18,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:26:19,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:26:19,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:26:19,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154973405] [2024-06-14 12:26:19,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154973405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:26:19,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:26:19,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:26:19,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748061627] [2024-06-14 12:26:19,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:26:19,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:26:19,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:26:19,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:26:19,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:26:19,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:26:19,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 702 places, 647 transitions, 7013 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:26:19,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:26:19,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:26:19,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:26:20,548 INFO L124 PetriNetUnfolderBase]: 1473/2706 cut-off events. [2024-06-14 12:26:20,548 INFO L125 PetriNetUnfolderBase]: For 437681/437681 co-relation queries the response was YES. [2024-06-14 12:26:20,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20002 conditions, 2706 events. 1473/2706 cut-off events. For 437681/437681 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 18072 event pairs, 251 based on Foata normal form. 2/2708 useless extension candidates. Maximal degree in co-relation 19677. Up to 2441 conditions per place. [2024-06-14 12:26:20,605 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 612 selfloop transitions, 53 changer transitions 0/668 dead transitions. [2024-06-14 12:26:20,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 713 places, 668 transitions, 8479 flow [2024-06-14 12:26:20,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:26:20,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:26:20,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-14 12:26:20,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36764705882352944 [2024-06-14 12:26:20,606 INFO L175 Difference]: Start difference. First operand has 702 places, 647 transitions, 7013 flow. Second operand 12 states and 150 transitions. [2024-06-14 12:26:20,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 713 places, 668 transitions, 8479 flow [2024-06-14 12:26:23,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 703 places, 668 transitions, 8334 flow, removed 47 selfloop flow, removed 10 redundant places. [2024-06-14 12:26:23,915 INFO L231 Difference]: Finished difference. Result has 705 places, 650 transitions, 7063 flow [2024-06-14 12:26:23,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6872, PETRI_DIFFERENCE_MINUEND_PLACES=692, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=647, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=595, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7063, PETRI_PLACES=705, PETRI_TRANSITIONS=650} [2024-06-14 12:26:23,915 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 672 predicate places. [2024-06-14 12:26:23,915 INFO L495 AbstractCegarLoop]: Abstraction has has 705 places, 650 transitions, 7063 flow [2024-06-14 12:26:23,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:26:23,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:26:23,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:26:23,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2024-06-14 12:26:23,915 INFO L420 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:26:23,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:26:23,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1204818020, now seen corresponding path program 18 times [2024-06-14 12:26:23,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:26:23,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728464616] [2024-06-14 12:26:23,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:26:23,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:26:23,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:26:25,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:26:25,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:26:25,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728464616] [2024-06-14 12:26:25,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728464616] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:26:25,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:26:25,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:26:25,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629133922] [2024-06-14 12:26:25,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:26:25,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:26:25,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:26:25,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:26:25,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:26:25,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:26:25,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 705 places, 650 transitions, 7063 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:26:25,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:26:25,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:26:25,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:26:26,160 INFO L124 PetriNetUnfolderBase]: 1480/2724 cut-off events. [2024-06-14 12:26:26,161 INFO L125 PetriNetUnfolderBase]: For 442621/442621 co-relation queries the response was YES. [2024-06-14 12:26:26,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20175 conditions, 2724 events. 1480/2724 cut-off events. For 442621/442621 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 18315 event pairs, 239 based on Foata normal form. 2/2726 useless extension candidates. Maximal degree in co-relation 19848. Up to 2409 conditions per place. [2024-06-14 12:26:26,219 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 600 selfloop transitions, 69 changer transitions 0/672 dead transitions. [2024-06-14 12:26:26,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 716 places, 672 transitions, 8559 flow [2024-06-14 12:26:26,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:26:26,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:26:26,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-14 12:26:26,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 12:26:26,220 INFO L175 Difference]: Start difference. First operand has 705 places, 650 transitions, 7063 flow. Second operand 12 states and 153 transitions. [2024-06-14 12:26:26,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 716 places, 672 transitions, 8559 flow [2024-06-14 12:26:29,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 706 places, 672 transitions, 8366 flow, removed 26 selfloop flow, removed 10 redundant places. [2024-06-14 12:26:29,701 INFO L231 Difference]: Finished difference. Result has 708 places, 655 transitions, 7139 flow [2024-06-14 12:26:29,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6879, PETRI_DIFFERENCE_MINUEND_PLACES=695, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=650, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=584, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7139, PETRI_PLACES=708, PETRI_TRANSITIONS=655} [2024-06-14 12:26:29,701 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 675 predicate places. [2024-06-14 12:26:29,701 INFO L495 AbstractCegarLoop]: Abstraction has has 708 places, 655 transitions, 7139 flow [2024-06-14 12:26:29,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:26:29,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:26:29,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:26:29,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2024-06-14 12:26:29,702 INFO L420 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:26:29,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:26:29,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1502937238, now seen corresponding path program 19 times [2024-06-14 12:26:29,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:26:29,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198614580] [2024-06-14 12:26:29,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:26:29,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:26:29,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:26:30,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:26:30,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:26:30,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198614580] [2024-06-14 12:26:30,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198614580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:26:30,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:26:30,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:26:30,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431116843] [2024-06-14 12:26:30,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:26:30,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:26:30,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:26:30,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:26:30,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:26:30,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:26:30,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 708 places, 655 transitions, 7139 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:26:30,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:26:30,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:26:30,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:26:31,754 INFO L124 PetriNetUnfolderBase]: 1484/2729 cut-off events. [2024-06-14 12:26:31,754 INFO L125 PetriNetUnfolderBase]: For 448773/448773 co-relation queries the response was YES. [2024-06-14 12:26:31,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20452 conditions, 2729 events. 1484/2729 cut-off events. For 448773/448773 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 18313 event pairs, 259 based on Foata normal form. 2/2731 useless extension candidates. Maximal degree in co-relation 20123. Up to 2461 conditions per place. [2024-06-14 12:26:31,814 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 618 selfloop transitions, 52 changer transitions 0/673 dead transitions. [2024-06-14 12:26:31,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 719 places, 673 transitions, 8565 flow [2024-06-14 12:26:31,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:26:31,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:26:31,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-14 12:26:31,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37254901960784315 [2024-06-14 12:26:31,815 INFO L175 Difference]: Start difference. First operand has 708 places, 655 transitions, 7139 flow. Second operand 12 states and 152 transitions. [2024-06-14 12:26:31,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 719 places, 673 transitions, 8565 flow [2024-06-14 12:26:35,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 712 places, 673 transitions, 8394 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-14 12:26:35,439 INFO L231 Difference]: Finished difference. Result has 713 places, 656 transitions, 7122 flow [2024-06-14 12:26:35,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6968, PETRI_DIFFERENCE_MINUEND_PLACES=701, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=655, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=603, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7122, PETRI_PLACES=713, PETRI_TRANSITIONS=656} [2024-06-14 12:26:35,440 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 680 predicate places. [2024-06-14 12:26:35,440 INFO L495 AbstractCegarLoop]: Abstraction has has 713 places, 656 transitions, 7122 flow [2024-06-14 12:26:35,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:26:35,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:26:35,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:26:35,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2024-06-14 12:26:35,440 INFO L420 AbstractCegarLoop]: === Iteration 236 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:26:35,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:26:35,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1332099958, now seen corresponding path program 20 times [2024-06-14 12:26:35,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:26:35,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037214590] [2024-06-14 12:26:35,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:26:35,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:26:35,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:26:36,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:26:36,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:26:36,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037214590] [2024-06-14 12:26:36,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037214590] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:26:36,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:26:36,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:26:36,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550638058] [2024-06-14 12:26:36,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:26:36,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:26:36,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:26:36,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:26:36,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:26:36,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:26:36,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 713 places, 656 transitions, 7122 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:26:36,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:26:36,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:26:36,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:26:37,471 INFO L124 PetriNetUnfolderBase]: 1488/2743 cut-off events. [2024-06-14 12:26:37,472 INFO L125 PetriNetUnfolderBase]: For 451297/451297 co-relation queries the response was YES. [2024-06-14 12:26:37,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20267 conditions, 2743 events. 1488/2743 cut-off events. For 451297/451297 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 18511 event pairs, 255 based on Foata normal form. 2/2745 useless extension candidates. Maximal degree in co-relation 19937. Up to 2443 conditions per place. [2024-06-14 12:26:37,531 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 616 selfloop transitions, 56 changer transitions 0/675 dead transitions. [2024-06-14 12:26:37,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 724 places, 675 transitions, 8556 flow [2024-06-14 12:26:37,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:26:37,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:26:37,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-14 12:26:37,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37254901960784315 [2024-06-14 12:26:37,532 INFO L175 Difference]: Start difference. First operand has 713 places, 656 transitions, 7122 flow. Second operand 12 states and 152 transitions. [2024-06-14 12:26:37,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 724 places, 675 transitions, 8556 flow [2024-06-14 12:26:41,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 713 places, 675 transitions, 8398 flow, removed 23 selfloop flow, removed 11 redundant places. [2024-06-14 12:26:41,306 INFO L231 Difference]: Finished difference. Result has 714 places, 657 transitions, 7128 flow [2024-06-14 12:26:41,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6964, PETRI_DIFFERENCE_MINUEND_PLACES=702, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=656, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=600, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7128, PETRI_PLACES=714, PETRI_TRANSITIONS=657} [2024-06-14 12:26:41,306 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 681 predicate places. [2024-06-14 12:26:41,306 INFO L495 AbstractCegarLoop]: Abstraction has has 714 places, 657 transitions, 7128 flow [2024-06-14 12:26:41,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:26:41,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:26:41,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:26:41,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2024-06-14 12:26:41,307 INFO L420 AbstractCegarLoop]: === Iteration 237 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:26:41,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:26:41,307 INFO L85 PathProgramCache]: Analyzing trace with hash -859488853, now seen corresponding path program 3 times [2024-06-14 12:26:41,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:26:41,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726739044] [2024-06-14 12:26:41,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:26:41,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:26:41,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:26:42,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:26:42,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:26:42,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726739044] [2024-06-14 12:26:42,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726739044] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:26:42,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:26:42,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:26:42,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374181234] [2024-06-14 12:26:42,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:26:42,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:26:42,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:26:42,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:26:42,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:26:42,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:26:42,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 714 places, 657 transitions, 7128 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:26:42,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:26:42,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:26:42,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:26:43,583 INFO L124 PetriNetUnfolderBase]: 1494/2753 cut-off events. [2024-06-14 12:26:43,584 INFO L125 PetriNetUnfolderBase]: For 456185/456185 co-relation queries the response was YES. [2024-06-14 12:26:43,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20386 conditions, 2753 events. 1494/2753 cut-off events. For 456185/456185 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 18558 event pairs, 238 based on Foata normal form. 2/2755 useless extension candidates. Maximal degree in co-relation 20056. Up to 2383 conditions per place. [2024-06-14 12:26:43,642 INFO L140 encePairwiseOnDemand]: 19/34 looper letters, 592 selfloop transitions, 85 changer transitions 0/680 dead transitions. [2024-06-14 12:26:43,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 726 places, 680 transitions, 8682 flow [2024-06-14 12:26:43,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:26:43,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:26:43,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 166 transitions. [2024-06-14 12:26:43,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3755656108597285 [2024-06-14 12:26:43,643 INFO L175 Difference]: Start difference. First operand has 714 places, 657 transitions, 7128 flow. Second operand 13 states and 166 transitions. [2024-06-14 12:26:43,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 726 places, 680 transitions, 8682 flow [2024-06-14 12:26:47,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 716 places, 680 transitions, 8528 flow, removed 22 selfloop flow, removed 10 redundant places. [2024-06-14 12:26:47,060 INFO L231 Difference]: Finished difference. Result has 717 places, 660 transitions, 7260 flow [2024-06-14 12:26:47,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6974, PETRI_DIFFERENCE_MINUEND_PLACES=704, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=657, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=572, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7260, PETRI_PLACES=717, PETRI_TRANSITIONS=660} [2024-06-14 12:26:47,060 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 684 predicate places. [2024-06-14 12:26:47,060 INFO L495 AbstractCegarLoop]: Abstraction has has 717 places, 660 transitions, 7260 flow [2024-06-14 12:26:47,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:26:47,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:26:47,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:26:47,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2024-06-14 12:26:47,061 INFO L420 AbstractCegarLoop]: === Iteration 238 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:26:47,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:26:47,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1509617149, now seen corresponding path program 4 times [2024-06-14 12:26:47,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:26:47,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909525422] [2024-06-14 12:26:47,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:26:47,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:26:47,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:26:48,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:26:48,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:26:48,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909525422] [2024-06-14 12:26:48,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909525422] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:26:48,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:26:48,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:26:48,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5027546] [2024-06-14 12:26:48,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:26:48,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:26:48,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:26:48,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:26:48,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:26:48,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:26:48,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 717 places, 660 transitions, 7260 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:26:48,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:26:48,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:26:48,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:26:49,296 INFO L124 PetriNetUnfolderBase]: 1500/2763 cut-off events. [2024-06-14 12:26:49,297 INFO L125 PetriNetUnfolderBase]: For 463003/463003 co-relation queries the response was YES. [2024-06-14 12:26:49,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20809 conditions, 2763 events. 1500/2763 cut-off events. For 463003/463003 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 18654 event pairs, 243 based on Foata normal form. 2/2765 useless extension candidates. Maximal degree in co-relation 20478. Up to 2393 conditions per place. [2024-06-14 12:26:49,356 INFO L140 encePairwiseOnDemand]: 19/34 looper letters, 613 selfloop transitions, 67 changer transitions 0/683 dead transitions. [2024-06-14 12:26:49,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 729 places, 683 transitions, 8832 flow [2024-06-14 12:26:49,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:26:49,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:26:49,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 169 transitions. [2024-06-14 12:26:49,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38235294117647056 [2024-06-14 12:26:49,357 INFO L175 Difference]: Start difference. First operand has 717 places, 660 transitions, 7260 flow. Second operand 13 states and 169 transitions. [2024-06-14 12:26:49,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 729 places, 683 transitions, 8832 flow [2024-06-14 12:26:53,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 718 places, 683 transitions, 8568 flow, removed 49 selfloop flow, removed 11 redundant places. [2024-06-14 12:26:53,190 INFO L231 Difference]: Finished difference. Result has 719 places, 663 transitions, 7252 flow [2024-06-14 12:26:53,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6996, PETRI_DIFFERENCE_MINUEND_PLACES=706, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=660, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=593, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7252, PETRI_PLACES=719, PETRI_TRANSITIONS=663} [2024-06-14 12:26:53,191 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 686 predicate places. [2024-06-14 12:26:53,191 INFO L495 AbstractCegarLoop]: Abstraction has has 719 places, 663 transitions, 7252 flow [2024-06-14 12:26:53,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:26:53,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:26:53,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:26:53,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2024-06-14 12:26:53,191 INFO L420 AbstractCegarLoop]: === Iteration 239 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:26:53,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:26:53,192 INFO L85 PathProgramCache]: Analyzing trace with hash -838231502, now seen corresponding path program 1 times [2024-06-14 12:26:53,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:26:53,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867367446] [2024-06-14 12:26:53,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:26:53,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:26:53,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:26:54,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:26:54,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:26:54,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867367446] [2024-06-14 12:26:54,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867367446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:26:54,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:26:54,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:26:54,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986197360] [2024-06-14 12:26:54,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:26:54,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:26:54,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:26:54,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:26:54,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:26:54,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:26:54,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 719 places, 663 transitions, 7252 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:26:54,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:26:54,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:26:54,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:26:55,371 INFO L124 PetriNetUnfolderBase]: 1504/2773 cut-off events. [2024-06-14 12:26:55,371 INFO L125 PetriNetUnfolderBase]: For 469251/469251 co-relation queries the response was YES. [2024-06-14 12:26:55,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21018 conditions, 2773 events. 1504/2773 cut-off events. For 469251/469251 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 18715 event pairs, 295 based on Foata normal form. 2/2775 useless extension candidates. Maximal degree in co-relation 20686. Up to 2560 conditions per place. [2024-06-14 12:26:55,432 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 650 selfloop transitions, 29 changer transitions 0/682 dead transitions. [2024-06-14 12:26:55,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 731 places, 682 transitions, 8708 flow [2024-06-14 12:26:55,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:26:55,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:26:55,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 154 transitions. [2024-06-14 12:26:55,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34841628959276016 [2024-06-14 12:26:55,432 INFO L175 Difference]: Start difference. First operand has 719 places, 663 transitions, 7252 flow. Second operand 13 states and 154 transitions. [2024-06-14 12:26:55,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 731 places, 682 transitions, 8708 flow [2024-06-14 12:26:59,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 720 places, 682 transitions, 8474 flow, removed 52 selfloop flow, removed 11 redundant places. [2024-06-14 12:26:59,256 INFO L231 Difference]: Finished difference. Result has 721 places, 664 transitions, 7136 flow [2024-06-14 12:26:59,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=7018, PETRI_DIFFERENCE_MINUEND_PLACES=708, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=663, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=634, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7136, PETRI_PLACES=721, PETRI_TRANSITIONS=664} [2024-06-14 12:26:59,256 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 688 predicate places. [2024-06-14 12:26:59,256 INFO L495 AbstractCegarLoop]: Abstraction has has 721 places, 664 transitions, 7136 flow [2024-06-14 12:26:59,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:26:59,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:26:59,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:26:59,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2024-06-14 12:26:59,256 INFO L420 AbstractCegarLoop]: === Iteration 240 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:26:59,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:26:59,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1088543203, now seen corresponding path program 5 times [2024-06-14 12:26:59,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:26:59,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608006619] [2024-06-14 12:26:59,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:26:59,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:26:59,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:27:00,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:27:00,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:27:00,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608006619] [2024-06-14 12:27:00,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608006619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:27:00,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:27:00,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:27:00,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014082599] [2024-06-14 12:27:00,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:27:00,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:27:00,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:27:00,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:27:00,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:27:00,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:27:00,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 721 places, 664 transitions, 7136 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:27:00,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:27:00,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:27:00,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:27:01,654 INFO L124 PetriNetUnfolderBase]: 1510/2781 cut-off events. [2024-06-14 12:27:01,655 INFO L125 PetriNetUnfolderBase]: For 473471/473471 co-relation queries the response was YES. [2024-06-14 12:27:01,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20994 conditions, 2781 events. 1510/2781 cut-off events. For 473471/473471 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 18812 event pairs, 241 based on Foata normal form. 2/2783 useless extension candidates. Maximal degree in co-relation 20661. Up to 2411 conditions per place. [2024-06-14 12:27:01,711 INFO L140 encePairwiseOnDemand]: 19/34 looper letters, 615 selfloop transitions, 70 changer transitions 0/688 dead transitions. [2024-06-14 12:27:01,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 733 places, 688 transitions, 8752 flow [2024-06-14 12:27:01,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:27:01,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:27:01,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 168 transitions. [2024-06-14 12:27:01,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38009049773755654 [2024-06-14 12:27:01,712 INFO L175 Difference]: Start difference. First operand has 721 places, 664 transitions, 7136 flow. Second operand 13 states and 168 transitions. [2024-06-14 12:27:01,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 733 places, 688 transitions, 8752 flow [2024-06-14 12:27:05,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 722 places, 688 transitions, 8644 flow, removed 26 selfloop flow, removed 11 redundant places. [2024-06-14 12:27:05,286 INFO L231 Difference]: Finished difference. Result has 723 places, 667 transitions, 7296 flow [2024-06-14 12:27:05,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=7028, PETRI_DIFFERENCE_MINUEND_PLACES=710, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=664, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=594, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7296, PETRI_PLACES=723, PETRI_TRANSITIONS=667} [2024-06-14 12:27:05,286 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 690 predicate places. [2024-06-14 12:27:05,286 INFO L495 AbstractCegarLoop]: Abstraction has has 723 places, 667 transitions, 7296 flow [2024-06-14 12:27:05,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:27:05,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:27:05,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:27:05,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2024-06-14 12:27:05,286 INFO L420 AbstractCegarLoop]: === Iteration 241 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:27:05,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:27:05,287 INFO L85 PathProgramCache]: Analyzing trace with hash -838231843, now seen corresponding path program 6 times [2024-06-14 12:27:05,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:27:05,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032994400] [2024-06-14 12:27:05,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:27:05,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:27:05,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:27:06,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:27:06,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:27:06,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032994400] [2024-06-14 12:27:06,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032994400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:27:06,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:27:06,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:27:06,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210826561] [2024-06-14 12:27:06,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:27:06,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:27:06,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:27:06,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:27:06,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:27:06,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:27:06,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 723 places, 667 transitions, 7296 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:27:06,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:27:06,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:27:06,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:27:07,736 INFO L124 PetriNetUnfolderBase]: 1523/2796 cut-off events. [2024-06-14 12:27:07,736 INFO L125 PetriNetUnfolderBase]: For 501938/501938 co-relation queries the response was YES. [2024-06-14 12:27:07,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22024 conditions, 2796 events. 1523/2796 cut-off events. For 501938/501938 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 18847 event pairs, 236 based on Foata normal form. 1/2797 useless extension candidates. Maximal degree in co-relation 21690. Up to 2396 conditions per place. [2024-06-14 12:27:07,799 INFO L140 encePairwiseOnDemand]: 19/34 looper letters, 589 selfloop transitions, 102 changer transitions 0/694 dead transitions. [2024-06-14 12:27:07,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 736 places, 694 transitions, 9402 flow [2024-06-14 12:27:07,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-14 12:27:07,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-14 12:27:07,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 179 transitions. [2024-06-14 12:27:07,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3760504201680672 [2024-06-14 12:27:07,800 INFO L175 Difference]: Start difference. First operand has 723 places, 667 transitions, 7296 flow. Second operand 14 states and 179 transitions. [2024-06-14 12:27:07,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 736 places, 694 transitions, 9402 flow [2024-06-14 12:27:12,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 725 places, 694 transitions, 9156 flow, removed 55 selfloop flow, removed 11 redundant places. [2024-06-14 12:27:12,058 INFO L231 Difference]: Finished difference. Result has 727 places, 672 transitions, 7496 flow [2024-06-14 12:27:12,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=7050, PETRI_DIFFERENCE_MINUEND_PLACES=712, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=667, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=567, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=7496, PETRI_PLACES=727, PETRI_TRANSITIONS=672} [2024-06-14 12:27:12,058 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 694 predicate places. [2024-06-14 12:27:12,058 INFO L495 AbstractCegarLoop]: Abstraction has has 727 places, 672 transitions, 7496 flow [2024-06-14 12:27:12,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:27:12,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:27:12,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:27:12,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2024-06-14 12:27:12,058 INFO L420 AbstractCegarLoop]: === Iteration 242 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:27:12,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:27:12,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1911049833, now seen corresponding path program 7 times [2024-06-14 12:27:12,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:27:12,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81491394] [2024-06-14 12:27:12,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:27:12,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:27:12,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:27:13,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:27:13,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:27:13,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81491394] [2024-06-14 12:27:13,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81491394] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:27:13,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:27:13,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:27:13,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058690261] [2024-06-14 12:27:13,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:27:13,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:27:13,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:27:13,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:27:13,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:27:13,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:27:13,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 727 places, 672 transitions, 7496 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:27:13,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:27:13,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:27:13,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:27:14,477 INFO L124 PetriNetUnfolderBase]: 1521/2788 cut-off events. [2024-06-14 12:27:14,478 INFO L125 PetriNetUnfolderBase]: For 490227/490227 co-relation queries the response was YES. [2024-06-14 12:27:14,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22219 conditions, 2788 events. 1521/2788 cut-off events. For 490227/490227 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 18781 event pairs, 258 based on Foata normal form. 1/2789 useless extension candidates. Maximal degree in co-relation 21883. Up to 2498 conditions per place. [2024-06-14 12:27:14,541 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 633 selfloop transitions, 66 changer transitions 0/702 dead transitions. [2024-06-14 12:27:14,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 738 places, 702 transitions, 9204 flow [2024-06-14 12:27:14,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:27:14,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:27:14,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-14 12:27:14,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37745098039215685 [2024-06-14 12:27:14,542 INFO L175 Difference]: Start difference. First operand has 727 places, 672 transitions, 7496 flow. Second operand 12 states and 154 transitions. [2024-06-14 12:27:14,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 738 places, 702 transitions, 9204 flow [2024-06-14 12:27:19,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 728 places, 702 transitions, 8971 flow, removed 51 selfloop flow, removed 10 redundant places. [2024-06-14 12:27:19,303 INFO L231 Difference]: Finished difference. Result has 731 places, 680 transitions, 7631 flow [2024-06-14 12:27:19,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=7279, PETRI_DIFFERENCE_MINUEND_PLACES=717, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=672, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=608, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7631, PETRI_PLACES=731, PETRI_TRANSITIONS=680} [2024-06-14 12:27:19,303 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 698 predicate places. [2024-06-14 12:27:19,303 INFO L495 AbstractCegarLoop]: Abstraction has has 731 places, 680 transitions, 7631 flow [2024-06-14 12:27:19,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:27:19,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:27:19,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:27:19,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2024-06-14 12:27:19,304 INFO L420 AbstractCegarLoop]: === Iteration 243 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:27:19,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:27:19,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1963999680, now seen corresponding path program 21 times [2024-06-14 12:27:19,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:27:19,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787869707] [2024-06-14 12:27:19,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:27:19,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:27:19,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:27:20,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:27:20,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:27:20,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787869707] [2024-06-14 12:27:20,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787869707] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:27:20,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:27:20,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:27:20,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410626813] [2024-06-14 12:27:20,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:27:20,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:27:20,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:27:20,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:27:20,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:27:20,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:27:20,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 731 places, 680 transitions, 7631 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:27:20,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:27:20,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:27:20,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:27:21,351 INFO L124 PetriNetUnfolderBase]: 1532/2820 cut-off events. [2024-06-14 12:27:21,351 INFO L125 PetriNetUnfolderBase]: For 560479/560479 co-relation queries the response was YES. [2024-06-14 12:27:21,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23158 conditions, 2820 events. 1532/2820 cut-off events. For 560479/560479 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 19064 event pairs, 178 based on Foata normal form. 2/2822 useless extension candidates. Maximal degree in co-relation 22818. Up to 2565 conditions per place. [2024-06-14 12:27:21,415 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 665 selfloop transitions, 34 changer transitions 0/702 dead transitions. [2024-06-14 12:27:21,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 742 places, 702 transitions, 9585 flow [2024-06-14 12:27:21,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:27:21,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:27:21,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-14 12:27:21,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37254901960784315 [2024-06-14 12:27:21,416 INFO L175 Difference]: Start difference. First operand has 731 places, 680 transitions, 7631 flow. Second operand 12 states and 152 transitions. [2024-06-14 12:27:21,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 742 places, 702 transitions, 9585 flow [2024-06-14 12:27:26,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 735 places, 702 transitions, 9410 flow, removed 63 selfloop flow, removed 7 redundant places. [2024-06-14 12:27:26,350 INFO L231 Difference]: Finished difference. Result has 736 places, 682 transitions, 7626 flow [2024-06-14 12:27:26,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=7456, PETRI_DIFFERENCE_MINUEND_PLACES=724, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=680, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=647, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7626, PETRI_PLACES=736, PETRI_TRANSITIONS=682} [2024-06-14 12:27:26,351 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 703 predicate places. [2024-06-14 12:27:26,351 INFO L495 AbstractCegarLoop]: Abstraction has has 736 places, 682 transitions, 7626 flow [2024-06-14 12:27:26,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:27:26,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:27:26,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:27:26,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2024-06-14 12:27:26,351 INFO L420 AbstractCegarLoop]: === Iteration 244 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:27:26,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:27:26,351 INFO L85 PathProgramCache]: Analyzing trace with hash 2050839360, now seen corresponding path program 22 times [2024-06-14 12:27:26,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:27:26,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343754357] [2024-06-14 12:27:26,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:27:26,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:27:26,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:27:27,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:27:27,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:27:27,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343754357] [2024-06-14 12:27:27,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343754357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:27:27,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:27:27,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:27:27,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092227516] [2024-06-14 12:27:27,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:27:27,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:27:27,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:27:27,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:27:27,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:27:27,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:27:27,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 736 places, 682 transitions, 7626 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:27:27,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:27:27,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:27:27,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:27:28,506 INFO L124 PetriNetUnfolderBase]: 1529/2817 cut-off events. [2024-06-14 12:27:28,506 INFO L125 PetriNetUnfolderBase]: For 514858/514858 co-relation queries the response was YES. [2024-06-14 12:27:28,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21980 conditions, 2817 events. 1529/2817 cut-off events. For 514858/514858 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 19054 event pairs, 161 based on Foata normal form. 2/2819 useless extension candidates. Maximal degree in co-relation 21639. Up to 2566 conditions per place. [2024-06-14 12:27:28,580 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 660 selfloop transitions, 37 changer transitions 0/700 dead transitions. [2024-06-14 12:27:28,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 747 places, 700 transitions, 9068 flow [2024-06-14 12:27:28,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:27:28,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:27:28,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-14 12:27:28,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36764705882352944 [2024-06-14 12:27:28,581 INFO L175 Difference]: Start difference. First operand has 736 places, 682 transitions, 7626 flow. Second operand 12 states and 150 transitions. [2024-06-14 12:27:28,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 747 places, 700 transitions, 9068 flow [2024-06-14 12:27:33,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 740 places, 700 transitions, 8938 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-06-14 12:27:33,153 INFO L231 Difference]: Finished difference. Result has 741 places, 682 transitions, 7574 flow [2024-06-14 12:27:33,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=7496, PETRI_DIFFERENCE_MINUEND_PLACES=729, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=682, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=645, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7574, PETRI_PLACES=741, PETRI_TRANSITIONS=682} [2024-06-14 12:27:33,154 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 708 predicate places. [2024-06-14 12:27:33,154 INFO L495 AbstractCegarLoop]: Abstraction has has 741 places, 682 transitions, 7574 flow [2024-06-14 12:27:33,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:27:33,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:27:33,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:27:33,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2024-06-14 12:27:33,154 INFO L420 AbstractCegarLoop]: === Iteration 245 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:27:33,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:27:33,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1962125730, now seen corresponding path program 23 times [2024-06-14 12:27:33,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:27:33,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868137442] [2024-06-14 12:27:33,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:27:33,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:27:33,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:27:34,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:27:34,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:27:34,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868137442] [2024-06-14 12:27:34,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868137442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:27:34,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:27:34,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:27:34,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776239116] [2024-06-14 12:27:34,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:27:34,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:27:34,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:27:34,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:27:34,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:27:34,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:27:34,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 741 places, 682 transitions, 7574 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:27:34,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:27:34,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:27:34,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:27:35,233 INFO L124 PetriNetUnfolderBase]: 1542/2844 cut-off events. [2024-06-14 12:27:35,233 INFO L125 PetriNetUnfolderBase]: For 518816/518816 co-relation queries the response was YES. [2024-06-14 12:27:35,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22075 conditions, 2844 events. 1542/2844 cut-off events. For 518816/518816 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 19305 event pairs, 159 based on Foata normal form. 2/2846 useless extension candidates. Maximal degree in co-relation 21732. Up to 2579 conditions per place. [2024-06-14 12:27:35,298 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 668 selfloop transitions, 35 changer transitions 0/706 dead transitions. [2024-06-14 12:27:35,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 752 places, 706 transitions, 9108 flow [2024-06-14 12:27:35,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:27:35,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:27:35,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-14 12:27:35,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3700980392156863 [2024-06-14 12:27:35,298 INFO L175 Difference]: Start difference. First operand has 741 places, 682 transitions, 7574 flow. Second operand 12 states and 151 transitions. [2024-06-14 12:27:35,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 752 places, 706 transitions, 9108 flow [2024-06-14 12:27:40,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 741 places, 706 transitions, 9032 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-14 12:27:40,181 INFO L231 Difference]: Finished difference. Result has 744 places, 685 transitions, 7654 flow [2024-06-14 12:27:40,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=7498, PETRI_DIFFERENCE_MINUEND_PLACES=730, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=682, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=647, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7654, PETRI_PLACES=744, PETRI_TRANSITIONS=685} [2024-06-14 12:27:40,181 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 711 predicate places. [2024-06-14 12:27:40,181 INFO L495 AbstractCegarLoop]: Abstraction has has 744 places, 685 transitions, 7654 flow [2024-06-14 12:27:40,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:27:40,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:27:40,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:27:40,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2024-06-14 12:27:40,182 INFO L420 AbstractCegarLoop]: === Iteration 246 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:27:40,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:27:40,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1335260714, now seen corresponding path program 24 times [2024-06-14 12:27:40,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:27:40,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851918424] [2024-06-14 12:27:40,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:27:40,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:27:40,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:27:41,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:27:41,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:27:41,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851918424] [2024-06-14 12:27:41,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851918424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:27:41,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:27:41,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:27:41,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674119175] [2024-06-14 12:27:41,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:27:41,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:27:41,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:27:41,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:27:41,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:27:41,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:27:41,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 744 places, 685 transitions, 7654 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:27:41,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:27:41,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:27:41,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:27:42,333 INFO L124 PetriNetUnfolderBase]: 1549/2859 cut-off events. [2024-06-14 12:27:42,333 INFO L125 PetriNetUnfolderBase]: For 525367/525367 co-relation queries the response was YES. [2024-06-14 12:27:42,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22290 conditions, 2859 events. 1549/2859 cut-off events. For 525367/525367 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 19457 event pairs, 175 based on Foata normal form. 2/2861 useless extension candidates. Maximal degree in co-relation 21944. Up to 2623 conditions per place. [2024-06-14 12:27:42,512 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 670 selfloop transitions, 33 changer transitions 0/706 dead transitions. [2024-06-14 12:27:42,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 755 places, 706 transitions, 9216 flow [2024-06-14 12:27:42,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:27:42,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:27:42,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-14 12:27:42,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36519607843137253 [2024-06-14 12:27:42,513 INFO L175 Difference]: Start difference. First operand has 744 places, 685 transitions, 7654 flow. Second operand 12 states and 149 transitions. [2024-06-14 12:27:42,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 755 places, 706 transitions, 9216 flow [2024-06-14 12:27:47,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 747 places, 706 transitions, 9090 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-14 12:27:47,259 INFO L231 Difference]: Finished difference. Result has 749 places, 689 transitions, 7719 flow [2024-06-14 12:27:47,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=7528, PETRI_DIFFERENCE_MINUEND_PLACES=736, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=685, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=654, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7719, PETRI_PLACES=749, PETRI_TRANSITIONS=689} [2024-06-14 12:27:47,259 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 716 predicate places. [2024-06-14 12:27:47,259 INFO L495 AbstractCegarLoop]: Abstraction has has 749 places, 689 transitions, 7719 flow [2024-06-14 12:27:47,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:27:47,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:27:47,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:27:47,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2024-06-14 12:27:47,259 INFO L420 AbstractCegarLoop]: === Iteration 247 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:27:47,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:27:47,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1329898334, now seen corresponding path program 25 times [2024-06-14 12:27:47,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:27:47,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304206717] [2024-06-14 12:27:47,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:27:47,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:27:47,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:27:48,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:27:48,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:27:48,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304206717] [2024-06-14 12:27:48,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304206717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:27:48,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:27:48,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:27:48,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167689600] [2024-06-14 12:27:48,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:27:48,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:27:48,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:27:48,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:27:48,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:27:48,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:27:48,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 749 places, 689 transitions, 7719 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:27:48,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:27:48,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:27:48,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:27:49,534 INFO L124 PetriNetUnfolderBase]: 1553/2865 cut-off events. [2024-06-14 12:27:49,534 INFO L125 PetriNetUnfolderBase]: For 532440/532440 co-relation queries the response was YES. [2024-06-14 12:27:49,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22529 conditions, 2865 events. 1553/2865 cut-off events. For 532440/532440 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 19508 event pairs, 177 based on Foata normal form. 2/2867 useless extension candidates. Maximal degree in co-relation 22181. Up to 2631 conditions per place. [2024-06-14 12:27:49,598 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 671 selfloop transitions, 34 changer transitions 0/708 dead transitions. [2024-06-14 12:27:49,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 760 places, 708 transitions, 9250 flow [2024-06-14 12:27:49,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:27:49,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:27:49,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-14 12:27:49,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36519607843137253 [2024-06-14 12:27:49,599 INFO L175 Difference]: Start difference. First operand has 749 places, 689 transitions, 7719 flow. Second operand 12 states and 149 transitions. [2024-06-14 12:27:49,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 760 places, 708 transitions, 9250 flow [2024-06-14 12:27:53,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 751 places, 708 transitions, 9114 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-06-14 12:27:53,944 INFO L231 Difference]: Finished difference. Result has 752 places, 691 transitions, 7734 flow [2024-06-14 12:27:53,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=7585, PETRI_DIFFERENCE_MINUEND_PLACES=740, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=689, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=656, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7734, PETRI_PLACES=752, PETRI_TRANSITIONS=691} [2024-06-14 12:27:53,945 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 719 predicate places. [2024-06-14 12:27:53,945 INFO L495 AbstractCegarLoop]: Abstraction has has 752 places, 691 transitions, 7734 flow [2024-06-14 12:27:53,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:27:53,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:27:53,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:27:53,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2024-06-14 12:27:53,945 INFO L420 AbstractCegarLoop]: === Iteration 248 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:27:53,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:27:53,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1329750464, now seen corresponding path program 26 times [2024-06-14 12:27:53,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:27:53,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585080034] [2024-06-14 12:27:53,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:27:53,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:27:53,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:27:54,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:27:54,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:27:54,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585080034] [2024-06-14 12:27:54,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585080034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:27:54,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:27:54,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:27:54,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318718443] [2024-06-14 12:27:54,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:27:54,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:27:54,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:27:54,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:27:54,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:27:55,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:27:55,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 752 places, 691 transitions, 7734 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:27:55,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:27:55,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:27:55,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:27:56,148 INFO L124 PetriNetUnfolderBase]: 1557/2871 cut-off events. [2024-06-14 12:27:56,149 INFO L125 PetriNetUnfolderBase]: For 537544/537544 co-relation queries the response was YES. [2024-06-14 12:27:56,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22566 conditions, 2871 events. 1557/2871 cut-off events. For 537544/537544 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 19561 event pairs, 173 based on Foata normal form. 2/2873 useless extension candidates. Maximal degree in co-relation 22217. Up to 2619 conditions per place. [2024-06-14 12:27:56,213 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 671 selfloop transitions, 36 changer transitions 0/710 dead transitions. [2024-06-14 12:27:56,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 763 places, 710 transitions, 9250 flow [2024-06-14 12:27:56,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:27:56,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:27:56,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-14 12:27:56,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36764705882352944 [2024-06-14 12:27:56,214 INFO L175 Difference]: Start difference. First operand has 752 places, 691 transitions, 7734 flow. Second operand 12 states and 150 transitions. [2024-06-14 12:27:56,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 763 places, 710 transitions, 9250 flow [2024-06-14 12:28:00,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 755 places, 710 transitions, 9139 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-14 12:28:00,182 INFO L231 Difference]: Finished difference. Result has 756 places, 692 transitions, 7757 flow [2024-06-14 12:28:00,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=7623, PETRI_DIFFERENCE_MINUEND_PLACES=744, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=691, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=655, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7757, PETRI_PLACES=756, PETRI_TRANSITIONS=692} [2024-06-14 12:28:00,183 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 723 predicate places. [2024-06-14 12:28:00,183 INFO L495 AbstractCegarLoop]: Abstraction has has 756 places, 692 transitions, 7757 flow [2024-06-14 12:28:00,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:28:00,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:28:00,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:28:00,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2024-06-14 12:28:00,183 INFO L420 AbstractCegarLoop]: === Iteration 249 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:28:00,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:28:00,183 INFO L85 PathProgramCache]: Analyzing trace with hash 2050845312, now seen corresponding path program 4 times [2024-06-14 12:28:00,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:28:00,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112438188] [2024-06-14 12:28:00,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:28:00,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:28:00,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:28:01,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:28:01,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:28:01,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112438188] [2024-06-14 12:28:01,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112438188] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:28:01,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:28:01,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:28:01,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951721892] [2024-06-14 12:28:01,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:28:01,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:28:01,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:28:01,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:28:01,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:28:01,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:28:01,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 756 places, 692 transitions, 7757 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:28:01,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:28:01,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:28:01,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:28:02,386 INFO L124 PetriNetUnfolderBase]: 1560/2876 cut-off events. [2024-06-14 12:28:02,386 INFO L125 PetriNetUnfolderBase]: For 519829/519829 co-relation queries the response was YES. [2024-06-14 12:28:02,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22581 conditions, 2876 events. 1560/2876 cut-off events. For 519829/519829 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 19567 event pairs, 161 based on Foata normal form. 1/2877 useless extension candidates. Maximal degree in co-relation 22231. Up to 2627 conditions per place. [2024-06-14 12:28:02,453 INFO L140 encePairwiseOnDemand]: 20/34 looper letters, 669 selfloop transitions, 40 changer transitions 0/712 dead transitions. [2024-06-14 12:28:02,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 768 places, 712 transitions, 9287 flow [2024-06-14 12:28:02,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:28:02,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:28:02,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 160 transitions. [2024-06-14 12:28:02,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36199095022624433 [2024-06-14 12:28:02,454 INFO L175 Difference]: Start difference. First operand has 756 places, 692 transitions, 7757 flow. Second operand 13 states and 160 transitions. [2024-06-14 12:28:02,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 768 places, 712 transitions, 9287 flow [2024-06-14 12:28:06,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 758 places, 712 transitions, 9163 flow, removed 27 selfloop flow, removed 10 redundant places. [2024-06-14 12:28:06,988 INFO L231 Difference]: Finished difference. Result has 759 places, 694 transitions, 7786 flow [2024-06-14 12:28:06,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=7633, PETRI_DIFFERENCE_MINUEND_PLACES=746, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=692, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=652, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7786, PETRI_PLACES=759, PETRI_TRANSITIONS=694} [2024-06-14 12:28:06,988 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 726 predicate places. [2024-06-14 12:28:06,988 INFO L495 AbstractCegarLoop]: Abstraction has has 759 places, 694 transitions, 7786 flow [2024-06-14 12:28:06,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:28:06,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:28:06,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:28:06,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2024-06-14 12:28:06,988 INFO L420 AbstractCegarLoop]: === Iteration 250 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:28:06,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:28:06,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1203590757, now seen corresponding path program 8 times [2024-06-14 12:28:06,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:28:06,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447935923] [2024-06-14 12:28:06,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:28:06,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:28:06,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:28:08,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:28:08,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:28:08,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447935923] [2024-06-14 12:28:08,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447935923] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:28:08,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:28:08,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:28:08,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204299863] [2024-06-14 12:28:08,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:28:08,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:28:08,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:28:08,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:28:08,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:28:08,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:28:08,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 759 places, 694 transitions, 7786 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:28:08,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:28:08,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:28:08,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:28:09,157 INFO L124 PetriNetUnfolderBase]: 1563/2882 cut-off events. [2024-06-14 12:28:09,157 INFO L125 PetriNetUnfolderBase]: For 523978/523978 co-relation queries the response was YES. [2024-06-14 12:28:09,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22617 conditions, 2882 events. 1563/2882 cut-off events. For 523978/523978 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 19642 event pairs, 175 based on Foata normal form. 1/2883 useless extension candidates. Maximal degree in co-relation 22266. Up to 2655 conditions per place. [2024-06-14 12:28:09,223 INFO L140 encePairwiseOnDemand]: 20/34 looper letters, 680 selfloop transitions, 34 changer transitions 0/717 dead transitions. [2024-06-14 12:28:09,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 771 places, 717 transitions, 9418 flow [2024-06-14 12:28:09,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:28:09,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:28:09,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 157 transitions. [2024-06-14 12:28:09,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3552036199095023 [2024-06-14 12:28:09,224 INFO L175 Difference]: Start difference. First operand has 759 places, 694 transitions, 7786 flow. Second operand 13 states and 157 transitions. [2024-06-14 12:28:09,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 771 places, 717 transitions, 9418 flow [2024-06-14 12:28:13,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 760 places, 717 transitions, 9281 flow, removed 30 selfloop flow, removed 11 redundant places. [2024-06-14 12:28:13,733 INFO L231 Difference]: Finished difference. Result has 763 places, 700 transitions, 7896 flow [2024-06-14 12:28:13,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=7649, PETRI_DIFFERENCE_MINUEND_PLACES=748, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=694, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=662, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7896, PETRI_PLACES=763, PETRI_TRANSITIONS=700} [2024-06-14 12:28:13,734 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 730 predicate places. [2024-06-14 12:28:13,734 INFO L495 AbstractCegarLoop]: Abstraction has has 763 places, 700 transitions, 7896 flow [2024-06-14 12:28:13,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:28:13,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:28:13,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:28:13,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2024-06-14 12:28:13,734 INFO L420 AbstractCegarLoop]: === Iteration 251 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:28:13,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:28:13,735 INFO L85 PathProgramCache]: Analyzing trace with hash 2043221134, now seen corresponding path program 27 times [2024-06-14 12:28:13,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:28:13,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843606867] [2024-06-14 12:28:13,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:28:13,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:28:13,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:28:14,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:28:14,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:28:14,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843606867] [2024-06-14 12:28:14,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843606867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:28:14,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:28:14,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:28:14,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734327524] [2024-06-14 12:28:14,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:28:14,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:28:14,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:28:14,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:28:14,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:28:14,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:28:14,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 763 places, 700 transitions, 7896 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:28:14,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:28:14,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:28:14,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:28:16,137 INFO L124 PetriNetUnfolderBase]: 1570/2896 cut-off events. [2024-06-14 12:28:16,138 INFO L125 PetriNetUnfolderBase]: For 554430/554430 co-relation queries the response was YES. [2024-06-14 12:28:16,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22969 conditions, 2896 events. 1570/2896 cut-off events. For 554430/554430 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 19762 event pairs, 169 based on Foata normal form. 2/2898 useless extension candidates. Maximal degree in co-relation 22615. Up to 2635 conditions per place. [2024-06-14 12:28:16,194 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 675 selfloop transitions, 43 changer transitions 0/721 dead transitions. [2024-06-14 12:28:16,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 774 places, 721 transitions, 9521 flow [2024-06-14 12:28:16,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:28:16,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:28:16,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-14 12:28:16,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 12:28:16,194 INFO L175 Difference]: Start difference. First operand has 763 places, 700 transitions, 7896 flow. Second operand 12 states and 153 transitions. [2024-06-14 12:28:16,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 774 places, 721 transitions, 9521 flow [2024-06-14 12:28:20,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 765 places, 721 transitions, 9348 flow, removed 64 selfloop flow, removed 9 redundant places. [2024-06-14 12:28:20,730 INFO L231 Difference]: Finished difference. Result has 767 places, 704 transitions, 7943 flow [2024-06-14 12:28:20,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=7723, PETRI_DIFFERENCE_MINUEND_PLACES=754, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=700, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=659, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7943, PETRI_PLACES=767, PETRI_TRANSITIONS=704} [2024-06-14 12:28:20,730 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 734 predicate places. [2024-06-14 12:28:20,730 INFO L495 AbstractCegarLoop]: Abstraction has has 767 places, 704 transitions, 7943 flow [2024-06-14 12:28:20,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:28:20,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:28:20,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:28:20,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2024-06-14 12:28:20,731 INFO L420 AbstractCegarLoop]: === Iteration 252 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:28:20,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:28:20,731 INFO L85 PathProgramCache]: Analyzing trace with hash -2125223104, now seen corresponding path program 28 times [2024-06-14 12:28:20,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:28:20,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574304298] [2024-06-14 12:28:20,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:28:20,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:28:20,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:28:21,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:28:21,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:28:21,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574304298] [2024-06-14 12:28:21,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574304298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:28:21,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:28:21,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:28:21,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854687270] [2024-06-14 12:28:21,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:28:21,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:28:21,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:28:21,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:28:21,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:28:21,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:28:21,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 767 places, 704 transitions, 7943 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:28:21,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:28:21,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:28:21,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:28:22,974 INFO L124 PetriNetUnfolderBase]: 1574/2902 cut-off events. [2024-06-14 12:28:22,974 INFO L125 PetriNetUnfolderBase]: For 562519/562519 co-relation queries the response was YES. [2024-06-14 12:28:23,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23276 conditions, 2902 events. 1574/2902 cut-off events. For 562519/562519 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 19789 event pairs, 169 based on Foata normal form. 2/2904 useless extension candidates. Maximal degree in co-relation 22919. Up to 2643 conditions per place. [2024-06-14 12:28:23,039 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 675 selfloop transitions, 46 changer transitions 0/724 dead transitions. [2024-06-14 12:28:23,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 778 places, 724 transitions, 9560 flow [2024-06-14 12:28:23,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:28:23,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:28:23,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-14 12:28:23,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37254901960784315 [2024-06-14 12:28:23,040 INFO L175 Difference]: Start difference. First operand has 767 places, 704 transitions, 7943 flow. Second operand 12 states and 152 transitions. [2024-06-14 12:28:23,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 778 places, 724 transitions, 9560 flow [2024-06-14 12:28:27,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 770 places, 724 transitions, 9400 flow, removed 41 selfloop flow, removed 8 redundant places. [2024-06-14 12:28:27,755 INFO L231 Difference]: Finished difference. Result has 772 places, 708 transitions, 8025 flow [2024-06-14 12:28:27,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=7786, PETRI_DIFFERENCE_MINUEND_PLACES=759, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=704, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=660, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8025, PETRI_PLACES=772, PETRI_TRANSITIONS=708} [2024-06-14 12:28:27,755 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 739 predicate places. [2024-06-14 12:28:27,755 INFO L495 AbstractCegarLoop]: Abstraction has has 772 places, 708 transitions, 8025 flow [2024-06-14 12:28:27,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:28:27,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:28:27,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:28:27,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2024-06-14 12:28:27,756 INFO L420 AbstractCegarLoop]: === Iteration 253 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:28:27,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:28:27,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1409016152, now seen corresponding path program 29 times [2024-06-14 12:28:27,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:28:27,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897045432] [2024-06-14 12:28:27,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:28:27,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:28:27,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:28:28,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:28:28,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:28:28,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897045432] [2024-06-14 12:28:28,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897045432] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:28:28,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:28:28,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:28:28,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781570824] [2024-06-14 12:28:28,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:28:28,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:28:28,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:28:28,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:28:28,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:28:28,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:28:28,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 772 places, 708 transitions, 8025 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:28:28,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:28:28,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:28:28,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:28:29,992 INFO L124 PetriNetUnfolderBase]: 1585/2925 cut-off events. [2024-06-14 12:28:29,992 INFO L125 PetriNetUnfolderBase]: For 618181/618181 co-relation queries the response was YES. [2024-06-14 12:28:30,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24155 conditions, 2925 events. 1585/2925 cut-off events. For 618181/618181 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 19997 event pairs, 170 based on Foata normal form. 2/2927 useless extension candidates. Maximal degree in co-relation 23796. Up to 2635 conditions per place. [2024-06-14 12:28:30,061 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 676 selfloop transitions, 49 changer transitions 0/728 dead transitions. [2024-06-14 12:28:30,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 783 places, 728 transitions, 10071 flow [2024-06-14 12:28:30,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:28:30,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:28:30,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-14 12:28:30,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37745098039215685 [2024-06-14 12:28:30,062 INFO L175 Difference]: Start difference. First operand has 772 places, 708 transitions, 8025 flow. Second operand 12 states and 154 transitions. [2024-06-14 12:28:30,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 783 places, 728 transitions, 10071 flow [2024-06-14 12:28:35,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 776 places, 728 transitions, 9918 flow, removed 41 selfloop flow, removed 7 redundant places. [2024-06-14 12:28:35,340 INFO L231 Difference]: Finished difference. Result has 777 places, 710 transitions, 8100 flow [2024-06-14 12:28:35,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=7872, PETRI_DIFFERENCE_MINUEND_PLACES=765, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=708, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=660, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8100, PETRI_PLACES=777, PETRI_TRANSITIONS=710} [2024-06-14 12:28:35,340 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 744 predicate places. [2024-06-14 12:28:35,340 INFO L495 AbstractCegarLoop]: Abstraction has has 777 places, 710 transitions, 8100 flow [2024-06-14 12:28:35,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:28:35,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:28:35,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:28:35,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2024-06-14 12:28:35,340 INFO L420 AbstractCegarLoop]: === Iteration 254 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:28:35,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:28:35,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1925921314, now seen corresponding path program 30 times [2024-06-14 12:28:35,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:28:35,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491266082] [2024-06-14 12:28:35,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:28:35,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:28:35,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:28:36,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:28:36,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:28:36,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491266082] [2024-06-14 12:28:36,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491266082] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:28:36,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:28:36,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:28:36,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425012756] [2024-06-14 12:28:36,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:28:36,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:28:36,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:28:36,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:28:36,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:28:36,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:28:36,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 777 places, 710 transitions, 8100 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:28:36,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:28:36,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:28:36,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:28:37,655 INFO L124 PetriNetUnfolderBase]: 1582/2918 cut-off events. [2024-06-14 12:28:37,655 INFO L125 PetriNetUnfolderBase]: For 575917/575917 co-relation queries the response was YES. [2024-06-14 12:28:37,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23576 conditions, 2918 events. 1582/2918 cut-off events. For 575917/575917 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 19956 event pairs, 169 based on Foata normal form. 2/2920 useless extension candidates. Maximal degree in co-relation 23216. Up to 2659 conditions per place. [2024-06-14 12:28:37,724 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 676 selfloop transitions, 47 changer transitions 0/726 dead transitions. [2024-06-14 12:28:37,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 788 places, 726 transitions, 9586 flow [2024-06-14 12:28:37,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:28:37,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:28:37,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-14 12:28:37,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3700980392156863 [2024-06-14 12:28:37,725 INFO L175 Difference]: Start difference. First operand has 777 places, 710 transitions, 8100 flow. Second operand 12 states and 151 transitions. [2024-06-14 12:28:37,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 788 places, 726 transitions, 9586 flow [2024-06-14 12:28:43,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 780 places, 726 transitions, 9412 flow, removed 58 selfloop flow, removed 8 redundant places. [2024-06-14 12:28:43,348 INFO L231 Difference]: Finished difference. Result has 781 places, 710 transitions, 8024 flow [2024-06-14 12:28:43,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=7926, PETRI_DIFFERENCE_MINUEND_PLACES=769, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=710, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=663, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8024, PETRI_PLACES=781, PETRI_TRANSITIONS=710} [2024-06-14 12:28:43,349 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 748 predicate places. [2024-06-14 12:28:43,349 INFO L495 AbstractCegarLoop]: Abstraction has has 781 places, 710 transitions, 8024 flow [2024-06-14 12:28:43,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:28:43,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:28:43,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:28:43,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253 [2024-06-14 12:28:43,350 INFO L420 AbstractCegarLoop]: === Iteration 255 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:28:43,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:28:43,350 INFO L85 PathProgramCache]: Analyzing trace with hash -2119645243, now seen corresponding path program 9 times [2024-06-14 12:28:43,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:28:43,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164170921] [2024-06-14 12:28:43,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:28:43,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:28:43,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:28:44,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:28:44,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:28:44,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164170921] [2024-06-14 12:28:44,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164170921] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:28:44,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:28:44,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:28:44,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377724152] [2024-06-14 12:28:44,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:28:44,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:28:44,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:28:44,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:28:44,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:28:44,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:28:44,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 781 places, 710 transitions, 8024 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:28:44,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:28:44,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:28:44,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:28:45,715 INFO L124 PetriNetUnfolderBase]: 1585/2929 cut-off events. [2024-06-14 12:28:45,715 INFO L125 PetriNetUnfolderBase]: For 555109/555109 co-relation queries the response was YES. [2024-06-14 12:28:45,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23546 conditions, 2929 events. 1585/2929 cut-off events. For 555109/555109 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 20096 event pairs, 167 based on Foata normal form. 1/2930 useless extension candidates. Maximal degree in co-relation 23184. Up to 2655 conditions per place. [2024-06-14 12:28:45,792 INFO L140 encePairwiseOnDemand]: 20/34 looper letters, 687 selfloop transitions, 48 changer transitions 0/738 dead transitions. [2024-06-14 12:28:45,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 793 places, 738 transitions, 9807 flow [2024-06-14 12:28:45,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:28:45,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:28:45,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 164 transitions. [2024-06-14 12:28:45,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37104072398190047 [2024-06-14 12:28:45,793 INFO L175 Difference]: Start difference. First operand has 781 places, 710 transitions, 8024 flow. Second operand 13 states and 164 transitions. [2024-06-14 12:28:45,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 793 places, 738 transitions, 9807 flow [2024-06-14 12:28:50,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 780 places, 738 transitions, 9656 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-14 12:28:50,078 INFO L231 Difference]: Finished difference. Result has 784 places, 720 transitions, 8251 flow [2024-06-14 12:28:50,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=7875, PETRI_DIFFERENCE_MINUEND_PLACES=768, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=710, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=665, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8251, PETRI_PLACES=784, PETRI_TRANSITIONS=720} [2024-06-14 12:28:50,078 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 751 predicate places. [2024-06-14 12:28:50,078 INFO L495 AbstractCegarLoop]: Abstraction has has 784 places, 720 transitions, 8251 flow [2024-06-14 12:28:50,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:28:50,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:28:50,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:28:50,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254 [2024-06-14 12:28:50,079 INFO L420 AbstractCegarLoop]: === Iteration 256 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:28:50,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:28:50,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1925705833, now seen corresponding path program 10 times [2024-06-14 12:28:50,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:28:50,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719053419] [2024-06-14 12:28:50,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:28:50,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:28:50,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:28:51,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:28:51,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:28:51,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719053419] [2024-06-14 12:28:51,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719053419] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:28:51,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:28:51,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:28:51,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173439092] [2024-06-14 12:28:51,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:28:51,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:28:51,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:28:51,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:28:51,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:28:51,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:28:51,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 784 places, 720 transitions, 8251 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:28:51,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:28:51,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:28:51,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:28:52,808 INFO L124 PetriNetUnfolderBase]: 1593/2946 cut-off events. [2024-06-14 12:28:52,808 INFO L125 PetriNetUnfolderBase]: For 587960/587960 co-relation queries the response was YES. [2024-06-14 12:28:52,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24250 conditions, 2946 events. 1593/2946 cut-off events. For 587960/587960 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 20242 event pairs, 167 based on Foata normal form. 1/2947 useless extension candidates. Maximal degree in co-relation 23884. Up to 2651 conditions per place. [2024-06-14 12:28:52,885 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 688 selfloop transitions, 53 changer transitions 0/744 dead transitions. [2024-06-14 12:28:52,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 795 places, 744 transitions, 10496 flow [2024-06-14 12:28:52,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:28:52,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:28:52,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 157 transitions. [2024-06-14 12:28:52,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38480392156862747 [2024-06-14 12:28:52,887 INFO L175 Difference]: Start difference. First operand has 784 places, 720 transitions, 8251 flow. Second operand 12 states and 157 transitions. [2024-06-14 12:28:52,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 795 places, 744 transitions, 10496 flow [2024-06-14 12:28:58,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 787 places, 744 transitions, 10209 flow, removed 116 selfloop flow, removed 8 redundant places. [2024-06-14 12:28:58,310 INFO L231 Difference]: Finished difference. Result has 789 places, 727 transitions, 8361 flow [2024-06-14 12:28:58,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=8020, PETRI_DIFFERENCE_MINUEND_PLACES=776, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=720, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=671, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8361, PETRI_PLACES=789, PETRI_TRANSITIONS=727} [2024-06-14 12:28:58,310 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 756 predicate places. [2024-06-14 12:28:58,310 INFO L495 AbstractCegarLoop]: Abstraction has has 789 places, 727 transitions, 8361 flow [2024-06-14 12:28:58,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:28:58,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:28:58,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:28:58,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable255 [2024-06-14 12:28:58,311 INFO L420 AbstractCegarLoop]: === Iteration 257 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:28:58,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:28:58,311 INFO L85 PathProgramCache]: Analyzing trace with hash -2050181961, now seen corresponding path program 11 times [2024-06-14 12:28:58,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:28:58,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105694302] [2024-06-14 12:28:58,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:28:58,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:28:58,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:28:59,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:28:59,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:28:59,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105694302] [2024-06-14 12:28:59,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105694302] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:28:59,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:28:59,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:28:59,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215396773] [2024-06-14 12:28:59,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:28:59,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:28:59,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:28:59,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:28:59,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:28:59,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:28:59,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 789 places, 727 transitions, 8361 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:28:59,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:28:59,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:28:59,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:29:00,593 INFO L124 PetriNetUnfolderBase]: 1596/2945 cut-off events. [2024-06-14 12:29:00,594 INFO L125 PetriNetUnfolderBase]: For 591792/591792 co-relation queries the response was YES. [2024-06-14 12:29:00,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24203 conditions, 2945 events. 1596/2945 cut-off events. For 591792/591792 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 20149 event pairs, 167 based on Foata normal form. 1/2946 useless extension candidates. Maximal degree in co-relation 23834. Up to 2673 conditions per place. [2024-06-14 12:29:00,664 INFO L140 encePairwiseOnDemand]: 20/34 looper letters, 687 selfloop transitions, 58 changer transitions 0/748 dead transitions. [2024-06-14 12:29:00,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 801 places, 748 transitions, 10024 flow [2024-06-14 12:29:00,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:29:00,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:29:00,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 161 transitions. [2024-06-14 12:29:00,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36425339366515835 [2024-06-14 12:29:00,665 INFO L175 Difference]: Start difference. First operand has 789 places, 727 transitions, 8361 flow. Second operand 13 states and 161 transitions. [2024-06-14 12:29:00,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 801 places, 748 transitions, 10024 flow [2024-06-14 12:29:05,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 793 places, 748 transitions, 9782 flow, removed 83 selfloop flow, removed 8 redundant places. [2024-06-14 12:29:05,546 INFO L231 Difference]: Finished difference. Result has 795 places, 732 transitions, 8392 flow [2024-06-14 12:29:05,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=8153, PETRI_DIFFERENCE_MINUEND_PLACES=781, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=727, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=671, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8392, PETRI_PLACES=795, PETRI_TRANSITIONS=732} [2024-06-14 12:29:05,547 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 762 predicate places. [2024-06-14 12:29:05,547 INFO L495 AbstractCegarLoop]: Abstraction has has 795 places, 732 transitions, 8392 flow [2024-06-14 12:29:05,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:29:05,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:29:05,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:29:05,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256 [2024-06-14 12:29:05,547 INFO L420 AbstractCegarLoop]: === Iteration 258 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:29:05,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:29:05,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1918286882, now seen corresponding path program 2 times [2024-06-14 12:29:05,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:29:05,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283391938] [2024-06-14 12:29:05,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:29:05,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:29:05,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:29:06,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:29:06,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:29:06,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283391938] [2024-06-14 12:29:06,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283391938] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:29:06,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:29:06,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:29:06,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212920545] [2024-06-14 12:29:06,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:29:06,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:29:06,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:29:06,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:29:06,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:29:06,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:29:06,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 795 places, 732 transitions, 8392 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:29:06,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:29:06,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:29:06,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:29:08,070 INFO L124 PetriNetUnfolderBase]: 1600/2959 cut-off events. [2024-06-14 12:29:08,071 INFO L125 PetriNetUnfolderBase]: For 615110/615110 co-relation queries the response was YES. [2024-06-14 12:29:08,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23907 conditions, 2959 events. 1600/2959 cut-off events. For 615110/615110 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 20358 event pairs, 219 based on Foata normal form. 2/2961 useless extension candidates. Maximal degree in co-relation 23536. Up to 2738 conditions per place. [2024-06-14 12:29:08,146 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 719 selfloop transitions, 28 changer transitions 0/750 dead transitions. [2024-06-14 12:29:08,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 807 places, 750 transitions, 9984 flow [2024-06-14 12:29:08,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:29:08,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:29:08,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 154 transitions. [2024-06-14 12:29:08,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34841628959276016 [2024-06-14 12:29:08,147 INFO L175 Difference]: Start difference. First operand has 795 places, 732 transitions, 8392 flow. Second operand 13 states and 154 transitions. [2024-06-14 12:29:08,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 807 places, 750 transitions, 9984 flow [2024-06-14 12:29:13,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 798 places, 750 transitions, 9829 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-14 12:29:13,420 INFO L231 Difference]: Finished difference. Result has 799 places, 733 transitions, 8355 flow [2024-06-14 12:29:13,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=8237, PETRI_DIFFERENCE_MINUEND_PLACES=786, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=732, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=704, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8355, PETRI_PLACES=799, PETRI_TRANSITIONS=733} [2024-06-14 12:29:13,421 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 766 predicate places. [2024-06-14 12:29:13,421 INFO L495 AbstractCegarLoop]: Abstraction has has 799 places, 733 transitions, 8355 flow [2024-06-14 12:29:13,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:29:13,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:29:13,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:29:13,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable257 [2024-06-14 12:29:13,421 INFO L420 AbstractCegarLoop]: === Iteration 259 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:29:13,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:29:13,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1918287223, now seen corresponding path program 12 times [2024-06-14 12:29:13,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:29:13,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555180238] [2024-06-14 12:29:13,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:29:13,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:29:13,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:29:14,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:29:14,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:29:14,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555180238] [2024-06-14 12:29:14,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555180238] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:29:14,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:29:14,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:29:14,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126086545] [2024-06-14 12:29:14,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:29:14,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:29:14,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:29:14,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:29:14,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:29:14,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:29:14,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 799 places, 733 transitions, 8355 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:29:14,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:29:14,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:29:14,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:29:16,057 INFO L124 PetriNetUnfolderBase]: 1611/2967 cut-off events. [2024-06-14 12:29:16,057 INFO L125 PetriNetUnfolderBase]: For 647125/647125 co-relation queries the response was YES. [2024-06-14 12:29:16,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24407 conditions, 2967 events. 1611/2967 cut-off events. For 647125/647125 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 20325 event pairs, 167 based on Foata normal form. 2/2969 useless extension candidates. Maximal degree in co-relation 24036. Up to 2601 conditions per place. [2024-06-14 12:29:16,119 INFO L140 encePairwiseOnDemand]: 19/34 looper letters, 662 selfloop transitions, 92 changer transitions 0/757 dead transitions. [2024-06-14 12:29:16,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 812 places, 757 transitions, 10639 flow [2024-06-14 12:29:16,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-14 12:29:16,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-14 12:29:16,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 180 transitions. [2024-06-14 12:29:16,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37815126050420167 [2024-06-14 12:29:16,119 INFO L175 Difference]: Start difference. First operand has 799 places, 733 transitions, 8355 flow. Second operand 14 states and 180 transitions. [2024-06-14 12:29:16,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 812 places, 757 transitions, 10639 flow [2024-06-14 12:29:22,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 801 places, 757 transitions, 10531 flow, removed 27 selfloop flow, removed 11 redundant places. [2024-06-14 12:29:22,454 INFO L231 Difference]: Finished difference. Result has 802 places, 739 transitions, 8738 flow [2024-06-14 12:29:22,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=8247, PETRI_DIFFERENCE_MINUEND_PLACES=788, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=733, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=645, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=8738, PETRI_PLACES=802, PETRI_TRANSITIONS=739} [2024-06-14 12:29:22,455 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 769 predicate places. [2024-06-14 12:29:22,455 INFO L495 AbstractCegarLoop]: Abstraction has has 802 places, 739 transitions, 8738 flow [2024-06-14 12:29:22,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:29:22,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:29:22,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:29:22,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258 [2024-06-14 12:29:22,456 INFO L420 AbstractCegarLoop]: === Iteration 260 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:29:22,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:29:22,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1918555993, now seen corresponding path program 13 times [2024-06-14 12:29:22,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:29:22,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789672175] [2024-06-14 12:29:22,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:29:22,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:29:22,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:29:23,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:29:23,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:29:23,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789672175] [2024-06-14 12:29:23,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789672175] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:29:23,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:29:23,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:29:23,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601067921] [2024-06-14 12:29:23,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:29:23,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:29:23,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:29:23,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:29:23,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:29:23,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:29:23,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 802 places, 739 transitions, 8738 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:29:23,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:29:23,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:29:23,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:29:25,069 INFO L124 PetriNetUnfolderBase]: 1609/2964 cut-off events. [2024-06-14 12:29:25,069 INFO L125 PetriNetUnfolderBase]: For 603429/603429 co-relation queries the response was YES. [2024-06-14 12:29:25,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24229 conditions, 2964 events. 1609/2964 cut-off events. For 603429/603429 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 20288 event pairs, 167 based on Foata normal form. 1/2965 useless extension candidates. Maximal degree in co-relation 23857. Up to 2678 conditions per place. [2024-06-14 12:29:25,141 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 690 selfloop transitions, 61 changer transitions 0/754 dead transitions. [2024-06-14 12:29:25,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 813 places, 754 transitions, 10278 flow [2024-06-14 12:29:25,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:29:25,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:29:25,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 155 transitions. [2024-06-14 12:29:25,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3799019607843137 [2024-06-14 12:29:25,142 INFO L175 Difference]: Start difference. First operand has 802 places, 739 transitions, 8738 flow. Second operand 12 states and 155 transitions. [2024-06-14 12:29:25,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 813 places, 754 transitions, 10278 flow [2024-06-14 12:29:30,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 803 places, 754 transitions, 9933 flow, removed 119 selfloop flow, removed 10 redundant places. [2024-06-14 12:29:30,509 INFO L231 Difference]: Finished difference. Result has 804 places, 739 transitions, 8521 flow [2024-06-14 12:29:30,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=8393, PETRI_DIFFERENCE_MINUEND_PLACES=792, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=739, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=678, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8521, PETRI_PLACES=804, PETRI_TRANSITIONS=739} [2024-06-14 12:29:30,510 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 771 predicate places. [2024-06-14 12:29:30,510 INFO L495 AbstractCegarLoop]: Abstraction has has 804 places, 739 transitions, 8521 flow [2024-06-14 12:29:30,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:29:30,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:29:30,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:29:30,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable259 [2024-06-14 12:29:30,510 INFO L420 AbstractCegarLoop]: === Iteration 261 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:29:30,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:29:30,510 INFO L85 PathProgramCache]: Analyzing trace with hash -259796130, now seen corresponding path program 31 times [2024-06-14 12:29:30,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:29:30,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317451748] [2024-06-14 12:29:30,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:29:30,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:29:30,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:29:31,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:29:31,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:29:31,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317451748] [2024-06-14 12:29:31,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317451748] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:29:31,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:29:31,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:29:31,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365580018] [2024-06-14 12:29:31,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:29:31,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:29:31,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:29:31,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:29:31,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:29:31,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:29:31,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 804 places, 739 transitions, 8521 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:29:31,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:29:31,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:29:31,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:29:32,623 INFO L124 PetriNetUnfolderBase]: 1616/2984 cut-off events. [2024-06-14 12:29:32,623 INFO L125 PetriNetUnfolderBase]: For 632096/632096 co-relation queries the response was YES. [2024-06-14 12:29:32,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24255 conditions, 2984 events. 1616/2984 cut-off events. For 632096/632096 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 20489 event pairs, 165 based on Foata normal form. 2/2986 useless extension candidates. Maximal degree in co-relation 23881. Up to 2619 conditions per place. [2024-06-14 12:29:32,698 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 674 selfloop transitions, 84 changer transitions 0/761 dead transitions. [2024-06-14 12:29:32,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 815 places, 761 transitions, 10248 flow [2024-06-14 12:29:32,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:29:32,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:29:32,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-14 12:29:32,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37254901960784315 [2024-06-14 12:29:32,699 INFO L175 Difference]: Start difference. First operand has 804 places, 739 transitions, 8521 flow. Second operand 12 states and 152 transitions. [2024-06-14 12:29:32,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 815 places, 761 transitions, 10248 flow [2024-06-14 12:29:38,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 805 places, 761 transitions, 10121 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 12:29:38,344 INFO L231 Difference]: Finished difference. Result has 807 places, 746 transitions, 8753 flow [2024-06-14 12:29:38,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=8394, PETRI_DIFFERENCE_MINUEND_PLACES=794, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=739, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=660, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8753, PETRI_PLACES=807, PETRI_TRANSITIONS=746} [2024-06-14 12:29:38,344 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 774 predicate places. [2024-06-14 12:29:38,344 INFO L495 AbstractCegarLoop]: Abstraction has has 807 places, 746 transitions, 8753 flow [2024-06-14 12:29:38,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:29:38,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:29:38,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:29:38,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260 [2024-06-14 12:29:38,344 INFO L420 AbstractCegarLoop]: === Iteration 262 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:29:38,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:29:38,345 INFO L85 PathProgramCache]: Analyzing trace with hash -259944000, now seen corresponding path program 32 times [2024-06-14 12:29:38,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:29:38,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414166416] [2024-06-14 12:29:38,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:29:38,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:29:38,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:29:39,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:29:39,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:29:39,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414166416] [2024-06-14 12:29:39,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414166416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:29:39,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:29:39,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:29:39,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815384129] [2024-06-14 12:29:39,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:29:39,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:29:39,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:29:39,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:29:39,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:29:39,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:29:39,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 807 places, 746 transitions, 8753 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:29:39,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:29:39,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:29:39,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:29:40,665 INFO L124 PetriNetUnfolderBase]: 1627/3006 cut-off events. [2024-06-14 12:29:40,666 INFO L125 PetriNetUnfolderBase]: For 694063/694063 co-relation queries the response was YES. [2024-06-14 12:29:40,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25331 conditions, 3006 events. 1627/3006 cut-off events. For 694063/694063 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 20725 event pairs, 166 based on Foata normal form. 2/3008 useless extension candidates. Maximal degree in co-relation 24955. Up to 2613 conditions per place. [2024-06-14 12:29:40,739 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 676 selfloop transitions, 86 changer transitions 0/765 dead transitions. [2024-06-14 12:29:40,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 818 places, 765 transitions, 10895 flow [2024-06-14 12:29:40,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:29:40,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:29:40,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-14 12:29:40,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37745098039215685 [2024-06-14 12:29:40,740 INFO L175 Difference]: Start difference. First operand has 807 places, 746 transitions, 8753 flow. Second operand 12 states and 154 transitions. [2024-06-14 12:29:40,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 818 places, 765 transitions, 10895 flow [2024-06-14 12:29:46,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 812 places, 765 transitions, 10665 flow, removed 46 selfloop flow, removed 6 redundant places. [2024-06-14 12:29:46,568 INFO L231 Difference]: Finished difference. Result has 813 places, 748 transitions, 8835 flow [2024-06-14 12:29:46,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=8525, PETRI_DIFFERENCE_MINUEND_PLACES=801, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=746, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=661, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8835, PETRI_PLACES=813, PETRI_TRANSITIONS=748} [2024-06-14 12:29:46,568 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 780 predicate places. [2024-06-14 12:29:46,568 INFO L495 AbstractCegarLoop]: Abstraction has has 813 places, 748 transitions, 8835 flow [2024-06-14 12:29:46,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:29:46,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:29:46,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:29:46,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261 [2024-06-14 12:29:46,569 INFO L420 AbstractCegarLoop]: === Iteration 263 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:29:46,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:29:46,569 INFO L85 PathProgramCache]: Analyzing trace with hash 288673380, now seen corresponding path program 33 times [2024-06-14 12:29:46,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:29:46,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857183670] [2024-06-14 12:29:46,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:29:46,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:29:46,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:29:47,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:29:47,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:29:47,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857183670] [2024-06-14 12:29:47,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857183670] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:29:47,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:29:47,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:29:47,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030718220] [2024-06-14 12:29:47,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:29:47,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:29:47,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:29:47,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:29:47,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:29:47,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:29:47,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 813 places, 748 transitions, 8835 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:29:47,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:29:47,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:29:47,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:29:49,090 INFO L124 PetriNetUnfolderBase]: 1631/3022 cut-off events. [2024-06-14 12:29:49,090 INFO L125 PetriNetUnfolderBase]: For 694346/694346 co-relation queries the response was YES. [2024-06-14 12:29:49,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25330 conditions, 3022 events. 1631/3022 cut-off events. For 694346/694346 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 20970 event pairs, 172 based on Foata normal form. 2/3024 useless extension candidates. Maximal degree in co-relation 24953. Up to 2648 conditions per place. [2024-06-14 12:29:49,162 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 678 selfloop transitions, 84 changer transitions 0/765 dead transitions. [2024-06-14 12:29:49,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 824 places, 765 transitions, 10472 flow [2024-06-14 12:29:49,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:29:49,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:29:49,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-14 12:29:49,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 12:29:49,163 INFO L175 Difference]: Start difference. First operand has 813 places, 748 transitions, 8835 flow. Second operand 12 states and 153 transitions. [2024-06-14 12:29:49,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 824 places, 765 transitions, 10472 flow [2024-06-14 12:29:55,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 816 places, 765 transitions, 10273 flow, removed 48 selfloop flow, removed 8 redundant places. [2024-06-14 12:29:55,615 INFO L231 Difference]: Finished difference. Result has 818 places, 750 transitions, 8895 flow [2024-06-14 12:29:55,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=8654, PETRI_DIFFERENCE_MINUEND_PLACES=805, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=748, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=664, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8895, PETRI_PLACES=818, PETRI_TRANSITIONS=750} [2024-06-14 12:29:55,616 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 785 predicate places. [2024-06-14 12:29:55,616 INFO L495 AbstractCegarLoop]: Abstraction has has 818 places, 750 transitions, 8895 flow [2024-06-14 12:29:55,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:29:55,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:29:55,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:29:55,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262 [2024-06-14 12:29:55,616 INFO L420 AbstractCegarLoop]: === Iteration 264 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:29:55,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:29:55,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1779432692, now seen corresponding path program 34 times [2024-06-14 12:29:55,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:29:55,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534164214] [2024-06-14 12:29:55,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:29:55,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:29:55,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:29:56,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:29:56,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:29:56,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534164214] [2024-06-14 12:29:56,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534164214] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:29:56,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:29:56,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:29:56,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822661419] [2024-06-14 12:29:56,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:29:56,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:29:56,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:29:56,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:29:56,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:29:56,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:29:56,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 818 places, 750 transitions, 8895 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:29:56,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:29:56,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:29:56,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:29:57,973 INFO L124 PetriNetUnfolderBase]: 1635/3026 cut-off events. [2024-06-14 12:29:57,973 INFO L125 PetriNetUnfolderBase]: For 697964/697964 co-relation queries the response was YES. [2024-06-14 12:29:58,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25418 conditions, 3026 events. 1635/3026 cut-off events. For 697964/697964 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 20930 event pairs, 172 based on Foata normal form. 2/3028 useless extension candidates. Maximal degree in co-relation 25038. Up to 2656 conditions per place. [2024-06-14 12:29:58,056 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 669 selfloop transitions, 95 changer transitions 0/767 dead transitions. [2024-06-14 12:29:58,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 829 places, 767 transitions, 10522 flow [2024-06-14 12:29:58,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:29:58,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:29:58,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-14 12:29:58,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3700980392156863 [2024-06-14 12:29:58,057 INFO L175 Difference]: Start difference. First operand has 818 places, 750 transitions, 8895 flow. Second operand 12 states and 151 transitions. [2024-06-14 12:29:58,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 829 places, 767 transitions, 10522 flow [2024-06-14 12:30:03,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 821 places, 767 transitions, 10320 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-14 12:30:03,647 INFO L231 Difference]: Finished difference. Result has 823 places, 752 transitions, 8957 flow [2024-06-14 12:30:03,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=8693, PETRI_DIFFERENCE_MINUEND_PLACES=810, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=750, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=655, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8957, PETRI_PLACES=823, PETRI_TRANSITIONS=752} [2024-06-14 12:30:03,648 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 790 predicate places. [2024-06-14 12:30:03,648 INFO L495 AbstractCegarLoop]: Abstraction has has 823 places, 752 transitions, 8957 flow [2024-06-14 12:30:03,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:30:03,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:30:03,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:30:03,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263 [2024-06-14 12:30:03,648 INFO L420 AbstractCegarLoop]: === Iteration 265 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:30:03,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:30:03,648 INFO L85 PathProgramCache]: Analyzing trace with hash -60494340, now seen corresponding path program 35 times [2024-06-14 12:30:03,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:30:03,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372465709] [2024-06-14 12:30:03,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:30:03,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:30:03,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:30:04,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:30:04,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:30:04,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372465709] [2024-06-14 12:30:04,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372465709] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:30:04,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:30:04,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:30:04,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862382927] [2024-06-14 12:30:04,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:30:04,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:30:04,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:30:04,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:30:04,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:30:04,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:30:04,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 823 places, 752 transitions, 8957 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:30:04,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:30:04,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:30:04,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:30:05,933 INFO L124 PetriNetUnfolderBase]: 1632/3021 cut-off events. [2024-06-14 12:30:05,933 INFO L125 PetriNetUnfolderBase]: For 652198/652198 co-relation queries the response was YES. [2024-06-14 12:30:06,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24881 conditions, 3021 events. 1632/3021 cut-off events. For 652198/652198 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 20915 event pairs, 175 based on Foata normal form. 2/3023 useless extension candidates. Maximal degree in co-relation 24499. Up to 2651 conditions per place. [2024-06-14 12:30:06,011 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 681 selfloop transitions, 83 changer transitions 0/767 dead transitions. [2024-06-14 12:30:06,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 834 places, 767 transitions, 10521 flow [2024-06-14 12:30:06,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:30:06,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:30:06,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-14 12:30:06,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37745098039215685 [2024-06-14 12:30:06,012 INFO L175 Difference]: Start difference. First operand has 823 places, 752 transitions, 8957 flow. Second operand 12 states and 154 transitions. [2024-06-14 12:30:06,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 834 places, 767 transitions, 10521 flow [2024-06-14 12:30:11,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 821 places, 767 transitions, 10112 flow, removed 50 selfloop flow, removed 13 redundant places. [2024-06-14 12:30:11,907 INFO L231 Difference]: Finished difference. Result has 822 places, 752 transitions, 8718 flow [2024-06-14 12:30:11,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=8548, PETRI_DIFFERENCE_MINUEND_PLACES=810, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=752, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=669, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8718, PETRI_PLACES=822, PETRI_TRANSITIONS=752} [2024-06-14 12:30:11,908 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 789 predicate places. [2024-06-14 12:30:11,908 INFO L495 AbstractCegarLoop]: Abstraction has has 822 places, 752 transitions, 8718 flow [2024-06-14 12:30:11,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:30:11,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:30:11,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:30:11,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264 [2024-06-14 12:30:11,908 INFO L420 AbstractCegarLoop]: === Iteration 266 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:30:11,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:30:11,908 INFO L85 PathProgramCache]: Analyzing trace with hash -386103707, now seen corresponding path program 14 times [2024-06-14 12:30:11,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:30:11,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870146020] [2024-06-14 12:30:11,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:30:11,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:30:11,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:30:13,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:30:13,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:30:13,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870146020] [2024-06-14 12:30:13,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870146020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:30:13,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:30:13,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:30:13,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462741449] [2024-06-14 12:30:13,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:30:13,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:30:13,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:30:13,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:30:13,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:30:13,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:30:13,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 822 places, 752 transitions, 8718 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:30:13,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:30:13,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:30:13,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:30:14,440 INFO L124 PetriNetUnfolderBase]: 1635/3032 cut-off events. [2024-06-14 12:30:14,441 INFO L125 PetriNetUnfolderBase]: For 629998/629998 co-relation queries the response was YES. [2024-06-14 12:30:14,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24739 conditions, 3032 events. 1635/3032 cut-off events. For 629998/629998 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 21041 event pairs, 161 based on Foata normal form. 1/3033 useless extension candidates. Maximal degree in co-relation 24356. Up to 2578 conditions per place. [2024-06-14 12:30:14,511 INFO L140 encePairwiseOnDemand]: 20/34 looper letters, 687 selfloop transitions, 104 changer transitions 0/794 dead transitions. [2024-06-14 12:30:14,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 834 places, 794 transitions, 10775 flow [2024-06-14 12:30:14,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:30:14,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:30:14,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 166 transitions. [2024-06-14 12:30:14,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3755656108597285 [2024-06-14 12:30:14,512 INFO L175 Difference]: Start difference. First operand has 822 places, 752 transitions, 8718 flow. Second operand 13 states and 166 transitions. [2024-06-14 12:30:14,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 834 places, 794 transitions, 10775 flow [2024-06-14 12:30:19,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 819 places, 794 transitions, 10537 flow, removed 6 selfloop flow, removed 15 redundant places. [2024-06-14 12:30:19,857 INFO L231 Difference]: Finished difference. Result has 824 places, 772 transitions, 9159 flow [2024-06-14 12:30:19,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=8482, PETRI_DIFFERENCE_MINUEND_PLACES=807, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=752, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=651, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9159, PETRI_PLACES=824, PETRI_TRANSITIONS=772} [2024-06-14 12:30:19,857 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 791 predicate places. [2024-06-14 12:30:19,857 INFO L495 AbstractCegarLoop]: Abstraction has has 824 places, 772 transitions, 9159 flow [2024-06-14 12:30:19,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:30:19,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:30:19,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:30:19,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable265 [2024-06-14 12:30:19,858 INFO L420 AbstractCegarLoop]: === Iteration 267 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:30:19,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:30:19,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1111235539, now seen corresponding path program 15 times [2024-06-14 12:30:19,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:30:19,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087660962] [2024-06-14 12:30:19,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:30:19,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:30:19,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:30:20,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:30:20,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:30:20,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087660962] [2024-06-14 12:30:20,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087660962] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:30:20,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:30:20,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:30:20,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756286509] [2024-06-14 12:30:20,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:30:20,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:30:20,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:30:20,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:30:20,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:30:21,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:30:21,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 824 places, 772 transitions, 9159 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:30:21,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:30:21,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:30:21,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:30:22,323 INFO L124 PetriNetUnfolderBase]: 1638/3035 cut-off events. [2024-06-14 12:30:22,323 INFO L125 PetriNetUnfolderBase]: For 638259/638259 co-relation queries the response was YES. [2024-06-14 12:30:22,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25232 conditions, 3035 events. 1638/3035 cut-off events. For 638259/638259 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 21061 event pairs, 161 based on Foata normal form. 1/3036 useless extension candidates. Maximal degree in co-relation 24846. Up to 2583 conditions per place. [2024-06-14 12:30:22,401 INFO L140 encePairwiseOnDemand]: 20/34 looper letters, 676 selfloop transitions, 120 changer transitions 0/799 dead transitions. [2024-06-14 12:30:22,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 836 places, 799 transitions, 11083 flow [2024-06-14 12:30:22,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:30:22,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:30:22,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 165 transitions. [2024-06-14 12:30:22,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3733031674208145 [2024-06-14 12:30:22,402 INFO L175 Difference]: Start difference. First operand has 824 places, 772 transitions, 9159 flow. Second operand 13 states and 165 transitions. [2024-06-14 12:30:22,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 836 places, 799 transitions, 11083 flow [2024-06-14 12:30:28,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 829 places, 799 transitions, 10747 flow, removed 137 selfloop flow, removed 7 redundant places. [2024-06-14 12:30:28,419 INFO L231 Difference]: Finished difference. Result has 831 places, 778 transitions, 9301 flow [2024-06-14 12:30:28,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=8903, PETRI_DIFFERENCE_MINUEND_PLACES=817, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=772, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=655, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9301, PETRI_PLACES=831, PETRI_TRANSITIONS=778} [2024-06-14 12:30:28,420 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 798 predicate places. [2024-06-14 12:30:28,420 INFO L495 AbstractCegarLoop]: Abstraction has has 831 places, 778 transitions, 9301 flow [2024-06-14 12:30:28,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:30:28,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:30:28,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:30:28,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266 [2024-06-14 12:30:28,421 INFO L420 AbstractCegarLoop]: === Iteration 268 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:30:28,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:30:28,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1772067371, now seen corresponding path program 16 times [2024-06-14 12:30:28,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:30:28,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454304419] [2024-06-14 12:30:28,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:30:28,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:30:28,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:30:29,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:30:29,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:30:29,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454304419] [2024-06-14 12:30:29,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454304419] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:30:29,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:30:29,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:30:29,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69409238] [2024-06-14 12:30:29,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:30:29,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:30:29,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:30:29,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:30:29,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:30:29,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:30:29,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 831 places, 778 transitions, 9301 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:30:29,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:30:29,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:30:29,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:30:30,925 INFO L124 PetriNetUnfolderBase]: 1641/3032 cut-off events. [2024-06-14 12:30:30,925 INFO L125 PetriNetUnfolderBase]: For 639755/639755 co-relation queries the response was YES. [2024-06-14 12:30:30,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25076 conditions, 3032 events. 1641/3032 cut-off events. For 639755/639755 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 20961 event pairs, 161 based on Foata normal form. 1/3033 useless extension candidates. Maximal degree in co-relation 24687. Up to 2588 conditions per place. [2024-06-14 12:30:31,006 INFO L140 encePairwiseOnDemand]: 20/34 looper letters, 690 selfloop transitions, 111 changer transitions 0/804 dead transitions. [2024-06-14 12:30:31,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 843 places, 804 transitions, 11152 flow [2024-06-14 12:30:31,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:30:31,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:30:31,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 167 transitions. [2024-06-14 12:30:31,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778280542986425 [2024-06-14 12:30:31,006 INFO L175 Difference]: Start difference. First operand has 831 places, 778 transitions, 9301 flow. Second operand 13 states and 167 transitions. [2024-06-14 12:30:31,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 843 places, 804 transitions, 11152 flow [2024-06-14 12:30:37,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 835 places, 804 transitions, 10853 flow, removed 62 selfloop flow, removed 8 redundant places. [2024-06-14 12:30:37,259 INFO L231 Difference]: Finished difference. Result has 837 places, 784 transitions, 9389 flow [2024-06-14 12:30:37,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=9017, PETRI_DIFFERENCE_MINUEND_PLACES=823, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=778, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=670, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9389, PETRI_PLACES=837, PETRI_TRANSITIONS=784} [2024-06-14 12:30:37,260 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 804 predicate places. [2024-06-14 12:30:37,260 INFO L495 AbstractCegarLoop]: Abstraction has has 837 places, 784 transitions, 9389 flow [2024-06-14 12:30:37,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:30:37,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:30:37,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:30:37,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable267 [2024-06-14 12:30:37,260 INFO L420 AbstractCegarLoop]: === Iteration 269 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:30:37,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:30:37,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1236110081, now seen corresponding path program 17 times [2024-06-14 12:30:37,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:30:37,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101543874] [2024-06-14 12:30:37,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:30:37,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:30:37,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:30:38,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:30:38,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:30:38,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101543874] [2024-06-14 12:30:38,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101543874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:30:38,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:30:38,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:30:38,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247903087] [2024-06-14 12:30:38,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:30:38,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:30:38,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:30:38,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:30:38,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:30:38,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-14 12:30:38,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 837 places, 784 transitions, 9389 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:30:38,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:30:38,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-14 12:30:38,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:30:39,749 INFO L124 PetriNetUnfolderBase]: 1644/3039 cut-off events. [2024-06-14 12:30:39,749 INFO L125 PetriNetUnfolderBase]: For 647438/647438 co-relation queries the response was YES. [2024-06-14 12:30:39,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25233 conditions, 3039 events. 1644/3039 cut-off events. For 647438/647438 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 21033 event pairs, 161 based on Foata normal form. 1/3040 useless extension candidates. Maximal degree in co-relation 24843. Up to 2593 conditions per place. [2024-06-14 12:30:39,817 INFO L140 encePairwiseOnDemand]: 20/34 looper letters, 689 selfloop transitions, 115 changer transitions 0/807 dead transitions. [2024-06-14 12:30:39,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 849 places, 807 transitions, 11213 flow [2024-06-14 12:30:39,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:30:39,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:30:39,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 165 transitions. [2024-06-14 12:30:39,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3733031674208145 [2024-06-14 12:30:39,818 INFO L175 Difference]: Start difference. First operand has 837 places, 784 transitions, 9389 flow. Second operand 13 states and 165 transitions. [2024-06-14 12:30:39,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 849 places, 807 transitions, 11213 flow [2024-06-14 12:30:45,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 842 places, 807 transitions, 10968 flow, removed 50 selfloop flow, removed 7 redundant places. [2024-06-14 12:30:45,611 INFO L231 Difference]: Finished difference. Result has 844 places, 788 transitions, 9516 flow [2024-06-14 12:30:45,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=9145, PETRI_DIFFERENCE_MINUEND_PLACES=830, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=784, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=670, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9516, PETRI_PLACES=844, PETRI_TRANSITIONS=788} [2024-06-14 12:30:45,611 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 811 predicate places. [2024-06-14 12:30:45,611 INFO L495 AbstractCegarLoop]: Abstraction has has 844 places, 788 transitions, 9516 flow [2024-06-14 12:30:45,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:30:45,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:30:45,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:30:45,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable268 [2024-06-14 12:30:45,612 INFO L420 AbstractCegarLoop]: === Iteration 270 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:30:45,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:30:45,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1228700771, now seen corresponding path program 18 times [2024-06-14 12:30:45,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:30:45,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911314198] [2024-06-14 12:30:45,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:30:45,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:30:45,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Killed by 15