./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi008.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/rfi008.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/rfi008.opt.i ./goblint.2024-05-21_14-57-05.files/protection/rfi008.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 12:45:30,101 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 12:45:30,194 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 12:45:30,199 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 12:45:30,200 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 12:45:30,227 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 12:45:30,228 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 12:45:30,228 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 12:45:30,229 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 12:45:30,233 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 12:45:30,233 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 12:45:30,233 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 12:45:30,234 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 12:45:30,235 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 12:45:30,236 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 12:45:30,236 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 12:45:30,236 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 12:45:30,236 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 12:45:30,237 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 12:45:30,237 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 12:45:30,237 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 12:45:30,238 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 12:45:30,238 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 12:45:30,238 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 12:45:30,238 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 12:45:30,239 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 12:45:30,239 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 12:45:30,239 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 12:45:30,240 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 12:45:30,240 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 12:45:30,241 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 12:45:30,241 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 12:45:30,241 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 12:45:30,241 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 12:45:30,242 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 12:45:30,242 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 12:45:30,242 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 12:45:30,242 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 12:45:30,242 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 12:45:30,243 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 12:45:30,243 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 12:45:30,243 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 12:45:30,243 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 12:45:30,243 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 12:45:30,503 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 12:45:30,527 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 12:45:30,529 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 12:45:30,530 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 12:45:30,531 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 12:45:30,532 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi008.opt.i [2024-06-14 12:45:31,721 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 12:45:31,940 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 12:45:31,940 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi008.opt.i [2024-06-14 12:45:31,955 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/385a740fc/ead9bb78e1bc453db8b35501070ca0a1/FLAG2e1d46b1f [2024-06-14 12:45:31,966 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/385a740fc/ead9bb78e1bc453db8b35501070ca0a1 [2024-06-14 12:45:31,967 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 12:45:31,968 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 12:45:31,968 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/rfi008.opt.yml/witness.yml [2024-06-14 12:45:32,138 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 12:45:32,139 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 12:45:32,140 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 12:45:32,140 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 12:45:32,145 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 12:45:32,146 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 12:45:31" (1/2) ... [2024-06-14 12:45:32,148 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d0f5ff2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:45:32, skipping insertion in model container [2024-06-14 12:45:32,148 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 12:45:31" (1/2) ... [2024-06-14 12:45:32,152 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@281325f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:45:32, skipping insertion in model container [2024-06-14 12:45:32,153 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 12:45:32" (2/2) ... [2024-06-14 12:45:32,153 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d0f5ff2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:45:32, skipping insertion in model container [2024-06-14 12:45:32,153 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 12:45:32" (2/2) ... [2024-06-14 12:45:32,154 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 12:45:32,228 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 12:45:32,229 INFO L97 edCorrectnessWitness]: Location invariant before [L830-L830] ((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EBX && __unbuffered_p0_EBX <= 1) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) [2024-06-14 12:45:32,229 INFO L97 edCorrectnessWitness]: Location invariant before [L829-L829] ((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EBX && __unbuffered_p0_EBX <= 1) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) [2024-06-14 12:45:32,229 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 12:45:32,230 INFO L106 edCorrectnessWitness]: ghost_update [L827-L827] multithreaded = 1; [2024-06-14 12:45:32,299 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 12:45:32,652 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 12:45:32,662 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-14 12:45:32,783 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 12:45:32,824 INFO L206 MainTranslator]: Completed translation [2024-06-14 12:45:32,824 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:45:32 WrapperNode [2024-06-14 12:45:32,825 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 12:45:32,826 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 12:45:32,826 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 12:45:32,826 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 12:45:32,834 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:45:32" (1/1) ... [2024-06-14 12:45:32,853 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:45:32" (1/1) ... [2024-06-14 12:45:32,895 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 137 [2024-06-14 12:45:32,896 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 12:45:32,900 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 12:45:32,900 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 12:45:32,900 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 12:45:32,909 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:45:32" (1/1) ... [2024-06-14 12:45:32,910 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:45:32" (1/1) ... [2024-06-14 12:45:32,913 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:45:32" (1/1) ... [2024-06-14 12:45:32,929 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 12:45:32,930 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:45:32" (1/1) ... [2024-06-14 12:45:32,930 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:45:32" (1/1) ... [2024-06-14 12:45:32,938 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:45:32" (1/1) ... [2024-06-14 12:45:32,944 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:45:32" (1/1) ... [2024-06-14 12:45:32,946 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:45:32" (1/1) ... [2024-06-14 12:45:32,950 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:45:32" (1/1) ... [2024-06-14 12:45:32,954 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 12:45:32,955 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 12:45:32,955 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 12:45:32,955 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 12:45:32,956 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:45:32" (1/1) ... [2024-06-14 12:45:32,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 12:45:32,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 12:45:32,993 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 12:45:33,008 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 12:45:33,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-14 12:45:33,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 12:45:33,039 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-14 12:45:33,039 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-14 12:45:33,040 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-14 12:45:33,040 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-14 12:45:33,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 12:45:33,040 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-14 12:45:33,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 12:45:33,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 12:45:33,042 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 12:45:33,193 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 12:45:33,195 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 12:45:33,564 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 12:45:33,564 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 12:45:33,768 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 12:45:33,768 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-14 12:45:33,771 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 12:45:33 BoogieIcfgContainer [2024-06-14 12:45:33,771 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 12:45:33,774 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 12:45:33,774 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 12:45:33,777 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 12:45:33,778 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 12:45:31" (1/4) ... [2024-06-14 12:45:33,782 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43f27783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 12:45:33, skipping insertion in model container [2024-06-14 12:45:33,783 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 12:45:32" (2/4) ... [2024-06-14 12:45:33,783 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43f27783 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 12:45:33, skipping insertion in model container [2024-06-14 12:45:33,783 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:45:32" (3/4) ... [2024-06-14 12:45:33,783 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43f27783 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 12:45:33, skipping insertion in model container [2024-06-14 12:45:33,784 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 12:45:33" (4/4) ... [2024-06-14 12:45:33,785 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi008.opt.i [2024-06-14 12:45:33,802 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 12:45:33,802 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-14 12:45:33,802 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 12:45:33,846 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-14 12:45:33,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 32 transitions, 72 flow [2024-06-14 12:45:33,912 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-06-14 12:45:33,912 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 12:45:33,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 30 events. 0/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-14 12:45:33,914 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 32 transitions, 72 flow [2024-06-14 12:45:33,917 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 24 transitions, 54 flow [2024-06-14 12:45:33,935 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 12:45:33,944 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;@27657950, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 12:45:33,944 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-14 12:45:33,950 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 12:45:33,950 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-06-14 12:45:33,950 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 12:45:33,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:33,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-14 12:45:33,952 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 12:45:33,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:33,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1642904383, now seen corresponding path program 1 times [2024-06-14 12:45:34,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:34,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357982575] [2024-06-14 12:45:34,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:34,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:34,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:35,263 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 12:45:35,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:35,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357982575] [2024-06-14 12:45:35,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357982575] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:35,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:35,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-14 12:45:35,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811913893] [2024-06-14 12:45:35,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:35,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 12:45:35,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:35,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 12:45:35,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 12:45:35,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-06-14 12:45:35,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:35,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:35,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-06-14 12:45:35,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:35,500 INFO L124 PetriNetUnfolderBase]: 131/262 cut-off events. [2024-06-14 12:45:35,500 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-14 12:45:35,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 520 conditions, 262 events. 131/262 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1025 event pairs, 75 based on Foata normal form. 1/252 useless extension candidates. Maximal degree in co-relation 506. Up to 235 conditions per place. [2024-06-14 12:45:35,507 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 22 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2024-06-14 12:45:35,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 119 flow [2024-06-14 12:45:35,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 12:45:35,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 12:45:35,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 57 transitions. [2024-06-14 12:45:35,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.59375 [2024-06-14 12:45:35,521 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 54 flow. Second operand 3 states and 57 transitions. [2024-06-14 12:45:35,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 119 flow [2024-06-14 12:45:35,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-14 12:45:35,525 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 73 flow [2024-06-14 12:45:35,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2024-06-14 12:45:35,531 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-06-14 12:45:35,531 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 73 flow [2024-06-14 12:45:35,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:35,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:35,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:35,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 12:45:35,532 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 12:45:35,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:35,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1717139950, now seen corresponding path program 1 times [2024-06-14 12:45:35,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:35,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875618140] [2024-06-14 12:45:35,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:35,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:35,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:36,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:36,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:36,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875618140] [2024-06-14 12:45:36,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875618140] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:36,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:36,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-14 12:45:36,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551675370] [2024-06-14 12:45:36,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:36,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-14 12:45:36,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:36,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-14 12:45:36,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-14 12:45:36,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:45:36,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 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 12:45:36,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:36,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:45:36,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:36,549 INFO L124 PetriNetUnfolderBase]: 186/342 cut-off events. [2024-06-14 12:45:36,549 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2024-06-14 12:45:36,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 786 conditions, 342 events. 186/342 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1273 event pairs, 94 based on Foata normal form. 2/341 useless extension candidates. Maximal degree in co-relation 771. Up to 319 conditions per place. [2024-06-14 12:45:36,553 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 28 selfloop transitions, 5 changer transitions 0/36 dead transitions. [2024-06-14 12:45:36,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 165 flow [2024-06-14 12:45:36,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 12:45:36,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 12:45:36,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 67 transitions. [2024-06-14 12:45:36,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234375 [2024-06-14 12:45:36,555 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 73 flow. Second operand 4 states and 67 transitions. [2024-06-14 12:45:36,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 165 flow [2024-06-14 12:45:36,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 162 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 12:45:36,557 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 97 flow [2024-06-14 12:45:36,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2024-06-14 12:45:36,558 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2024-06-14 12:45:36,558 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 97 flow [2024-06-14 12:45:36,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 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 12:45:36,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:36,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:36,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-14 12:45:36,559 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 12:45:36,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:36,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1683688252, now seen corresponding path program 1 times [2024-06-14 12:45:36,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:36,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863779181] [2024-06-14 12:45:36,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:36,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:36,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:37,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:37,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:37,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863779181] [2024-06-14 12:45:37,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863779181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:37,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:37,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 12:45:37,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193054841] [2024-06-14 12:45:37,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:37,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 12:45:37,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:37,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 12:45:37,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-14 12:45:37,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:45:37,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:37,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:37,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:45:37,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:37,605 INFO L124 PetriNetUnfolderBase]: 180/332 cut-off events. [2024-06-14 12:45:37,605 INFO L125 PetriNetUnfolderBase]: For 198/198 co-relation queries the response was YES. [2024-06-14 12:45:37,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 844 conditions, 332 events. 180/332 cut-off events. For 198/198 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1220 event pairs, 52 based on Foata normal form. 4/334 useless extension candidates. Maximal degree in co-relation 827. Up to 291 conditions per place. [2024-06-14 12:45:37,610 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 33 selfloop transitions, 7 changer transitions 0/43 dead transitions. [2024-06-14 12:45:37,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 43 transitions, 217 flow [2024-06-14 12:45:37,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 12:45:37,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 12:45:37,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 82 transitions. [2024-06-14 12:45:37,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5125 [2024-06-14 12:45:37,614 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 97 flow. Second operand 5 states and 82 transitions. [2024-06-14 12:45:37,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 43 transitions, 217 flow [2024-06-14 12:45:37,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 43 transitions, 208 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-14 12:45:37,617 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 121 flow [2024-06-14 12:45:37,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=121, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2024-06-14 12:45:37,618 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2024-06-14 12:45:37,618 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 121 flow [2024-06-14 12:45:37,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:37,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:37,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:37,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-14 12:45:37,619 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:45:37,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:37,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1621724491, now seen corresponding path program 1 times [2024-06-14 12:45:37,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:37,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262601788] [2024-06-14 12:45:37,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:37,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:37,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:38,341 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 12:45:38,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:38,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262601788] [2024-06-14 12:45:38,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262601788] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:38,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:38,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 12:45:38,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858491657] [2024-06-14 12:45:38,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:38,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 12:45:38,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:38,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 12:45:38,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-14 12:45:38,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-14 12:45:38,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 121 flow. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:38,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:38,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-14 12:45:38,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:38,598 INFO L124 PetriNetUnfolderBase]: 137/284 cut-off events. [2024-06-14 12:45:38,598 INFO L125 PetriNetUnfolderBase]: For 265/265 co-relation queries the response was YES. [2024-06-14 12:45:38,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 767 conditions, 284 events. 137/284 cut-off events. For 265/265 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1097 event pairs, 57 based on Foata normal form. 1/283 useless extension candidates. Maximal degree in co-relation 749. Up to 243 conditions per place. [2024-06-14 12:45:38,600 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 25 selfloop transitions, 6 changer transitions 0/37 dead transitions. [2024-06-14 12:45:38,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 37 transitions, 201 flow [2024-06-14 12:45:38,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 12:45:38,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 12:45:38,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 74 transitions. [2024-06-14 12:45:38,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4625 [2024-06-14 12:45:38,605 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 121 flow. Second operand 5 states and 74 transitions. [2024-06-14 12:45:38,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 37 transitions, 201 flow [2024-06-14 12:45:38,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 37 transitions, 186 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-14 12:45:38,608 INFO L231 Difference]: Finished difference. Result has 40 places, 32 transitions, 133 flow [2024-06-14 12:45:38,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=133, PETRI_PLACES=40, PETRI_TRANSITIONS=32} [2024-06-14 12:45:38,610 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2024-06-14 12:45:38,610 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 133 flow [2024-06-14 12:45:38,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:38,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:38,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:38,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-14 12:45:38,611 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:45:38,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:38,612 INFO L85 PathProgramCache]: Analyzing trace with hash 2129581982, now seen corresponding path program 1 times [2024-06-14 12:45:38,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:38,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503616768] [2024-06-14 12:45:38,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:38,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:38,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:39,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:39,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:39,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503616768] [2024-06-14 12:45:39,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503616768] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:39,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:39,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:45:39,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55360044] [2024-06-14 12:45:39,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:39,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:45:39,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:39,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:45:39,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:45:40,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:45:40,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 32 transitions, 133 flow. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:40,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:40,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:45:40,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:40,261 INFO L124 PetriNetUnfolderBase]: 174/321 cut-off events. [2024-06-14 12:45:40,261 INFO L125 PetriNetUnfolderBase]: For 449/449 co-relation queries the response was YES. [2024-06-14 12:45:40,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 942 conditions, 321 events. 174/321 cut-off events. For 449/449 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1150 event pairs, 29 based on Foata normal form. 4/323 useless extension candidates. Maximal degree in co-relation 922. Up to 262 conditions per place. [2024-06-14 12:45:40,264 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 38 selfloop transitions, 10 changer transitions 0/51 dead transitions. [2024-06-14 12:45:40,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 51 transitions, 271 flow [2024-06-14 12:45:40,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:45:40,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:45:40,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 104 transitions. [2024-06-14 12:45:40,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-14 12:45:40,270 INFO L175 Difference]: Start difference. First operand has 40 places, 32 transitions, 133 flow. Second operand 7 states and 104 transitions. [2024-06-14 12:45:40,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 51 transitions, 271 flow [2024-06-14 12:45:40,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 51 transitions, 260 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-14 12:45:40,274 INFO L231 Difference]: Finished difference. Result has 44 places, 33 transitions, 149 flow [2024-06-14 12:45:40,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=149, PETRI_PLACES=44, PETRI_TRANSITIONS=33} [2024-06-14 12:45:40,275 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 13 predicate places. [2024-06-14 12:45:40,275 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 33 transitions, 149 flow [2024-06-14 12:45:40,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:40,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:40,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:40,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-14 12:45:40,276 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 12:45:40,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:40,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1266149862, now seen corresponding path program 1 times [2024-06-14 12:45:40,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:40,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615281646] [2024-06-14 12:45:40,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:40,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:40,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:41,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:41,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:41,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615281646] [2024-06-14 12:45:41,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615281646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:41,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:41,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:45:41,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514706469] [2024-06-14 12:45:41,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:41,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:45:41,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:41,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:45:41,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:45:41,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-14 12:45:41,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 33 transitions, 149 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 12:45:41,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:41,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-14 12:45:41,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:41,523 INFO L124 PetriNetUnfolderBase]: 129/268 cut-off events. [2024-06-14 12:45:41,523 INFO L125 PetriNetUnfolderBase]: For 515/515 co-relation queries the response was YES. [2024-06-14 12:45:41,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 829 conditions, 268 events. 129/268 cut-off events. For 515/515 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1014 event pairs, 36 based on Foata normal form. 2/268 useless extension candidates. Maximal degree in co-relation 808. Up to 223 conditions per place. [2024-06-14 12:45:41,526 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 28 selfloop transitions, 8 changer transitions 0/42 dead transitions. [2024-06-14 12:45:41,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 42 transitions, 245 flow [2024-06-14 12:45:41,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:45:41,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:45:41,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2024-06-14 12:45:41,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4479166666666667 [2024-06-14 12:45:41,528 INFO L175 Difference]: Start difference. First operand has 44 places, 33 transitions, 149 flow. Second operand 6 states and 86 transitions. [2024-06-14 12:45:41,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 42 transitions, 245 flow [2024-06-14 12:45:41,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 42 transitions, 223 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-14 12:45:41,531 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 160 flow [2024-06-14 12:45:41,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=160, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2024-06-14 12:45:41,534 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 15 predicate places. [2024-06-14 12:45:41,534 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 160 flow [2024-06-14 12:45:41,534 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 12:45:41,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:41,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:41,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-14 12:45:41,536 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 12:45:41,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:41,536 INFO L85 PathProgramCache]: Analyzing trace with hash -2075778054, now seen corresponding path program 1 times [2024-06-14 12:45:41,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:41,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989615080] [2024-06-14 12:45:41,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:41,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:41,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:42,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:42,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:42,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989615080] [2024-06-14 12:45:42,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989615080] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:42,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:42,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:45:42,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40309502] [2024-06-14 12:45:42,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:42,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:45:42,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:42,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:45:42,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:45:42,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:45:42,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 160 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:42,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:42,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:45:42,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:42,465 INFO L124 PetriNetUnfolderBase]: 171/317 cut-off events. [2024-06-14 12:45:42,466 INFO L125 PetriNetUnfolderBase]: For 745/745 co-relation queries the response was YES. [2024-06-14 12:45:42,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1051 conditions, 317 events. 171/317 cut-off events. For 745/745 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1133 event pairs, 43 based on Foata normal form. 1/316 useless extension candidates. Maximal degree in co-relation 1028. Up to 291 conditions per place. [2024-06-14 12:45:42,468 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 35 selfloop transitions, 8 changer transitions 0/46 dead transitions. [2024-06-14 12:45:42,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 46 transitions, 276 flow [2024-06-14 12:45:42,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:45:42,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:45:42,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 78 transitions. [2024-06-14 12:45:42,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-14 12:45:42,470 INFO L175 Difference]: Start difference. First operand has 46 places, 35 transitions, 160 flow. Second operand 6 states and 78 transitions. [2024-06-14 12:45:42,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 46 transitions, 276 flow [2024-06-14 12:45:42,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 46 transitions, 259 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-14 12:45:42,472 INFO L231 Difference]: Finished difference. Result has 48 places, 37 transitions, 176 flow [2024-06-14 12:45:42,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=176, PETRI_PLACES=48, PETRI_TRANSITIONS=37} [2024-06-14 12:45:42,473 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 17 predicate places. [2024-06-14 12:45:42,473 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 37 transitions, 176 flow [2024-06-14 12:45:42,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:42,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:42,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:42,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-14 12:45:42,474 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:45:42,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:42,475 INFO L85 PathProgramCache]: Analyzing trace with hash 595932692, now seen corresponding path program 2 times [2024-06-14 12:45:42,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:42,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818077049] [2024-06-14 12:45:42,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:42,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:42,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:43,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:43,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:43,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818077049] [2024-06-14 12:45:43,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818077049] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:43,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:43,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:45:43,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395263830] [2024-06-14 12:45:43,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:43,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:45:43,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:43,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:45:43,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:45:43,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:45:43,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 37 transitions, 176 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:43,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:43,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:45:43,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:43,380 INFO L124 PetriNetUnfolderBase]: 169/315 cut-off events. [2024-06-14 12:45:43,380 INFO L125 PetriNetUnfolderBase]: For 967/970 co-relation queries the response was YES. [2024-06-14 12:45:43,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1094 conditions, 315 events. 169/315 cut-off events. For 967/970 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1135 event pairs, 47 based on Foata normal form. 3/315 useless extension candidates. Maximal degree in co-relation 1070. Up to 282 conditions per place. [2024-06-14 12:45:43,384 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 31 selfloop transitions, 11 changer transitions 0/45 dead transitions. [2024-06-14 12:45:43,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 45 transitions, 286 flow [2024-06-14 12:45:43,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:45:43,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:45:43,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 77 transitions. [2024-06-14 12:45:43,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010416666666667 [2024-06-14 12:45:43,387 INFO L175 Difference]: Start difference. First operand has 48 places, 37 transitions, 176 flow. Second operand 6 states and 77 transitions. [2024-06-14 12:45:43,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 45 transitions, 286 flow [2024-06-14 12:45:43,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 45 transitions, 269 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-14 12:45:43,389 INFO L231 Difference]: Finished difference. Result has 50 places, 39 transitions, 202 flow [2024-06-14 12:45:43,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=202, PETRI_PLACES=50, PETRI_TRANSITIONS=39} [2024-06-14 12:45:43,394 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 19 predicate places. [2024-06-14 12:45:43,395 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 39 transitions, 202 flow [2024-06-14 12:45:43,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:43,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:43,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:43,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-14 12:45:43,395 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 12:45:43,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:43,396 INFO L85 PathProgramCache]: Analyzing trace with hash -103213844, now seen corresponding path program 1 times [2024-06-14 12:45:43,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:43,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656394760] [2024-06-14 12:45:43,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:43,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:43,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:44,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:44,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:44,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656394760] [2024-06-14 12:45:44,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656394760] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:44,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:44,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:45:44,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801466429] [2024-06-14 12:45:44,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:44,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:45:44,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:44,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:45:44,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:45:44,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:45:44,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 39 transitions, 202 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:44,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:44,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:45:44,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:44,497 INFO L124 PetriNetUnfolderBase]: 187/349 cut-off events. [2024-06-14 12:45:44,497 INFO L125 PetriNetUnfolderBase]: For 1292/1292 co-relation queries the response was YES. [2024-06-14 12:45:44,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1280 conditions, 349 events. 187/349 cut-off events. For 1292/1292 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1285 event pairs, 43 based on Foata normal form. 2/349 useless extension candidates. Maximal degree in co-relation 1255. Up to 298 conditions per place. [2024-06-14 12:45:44,500 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 42 selfloop transitions, 16 changer transitions 0/61 dead transitions. [2024-06-14 12:45:44,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 61 transitions, 405 flow [2024-06-14 12:45:44,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:45:44,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:45:44,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-14 12:45:44,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40234375 [2024-06-14 12:45:44,501 INFO L175 Difference]: Start difference. First operand has 50 places, 39 transitions, 202 flow. Second operand 8 states and 103 transitions. [2024-06-14 12:45:44,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 61 transitions, 405 flow [2024-06-14 12:45:44,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 61 transitions, 374 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-14 12:45:44,505 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 277 flow [2024-06-14 12:45:44,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=277, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2024-06-14 12:45:44,507 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 25 predicate places. [2024-06-14 12:45:44,507 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 277 flow [2024-06-14 12:45:44,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:44,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:44,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:44,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-14 12:45:44,508 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 12:45:44,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:44,508 INFO L85 PathProgramCache]: Analyzing trace with hash 75241350, now seen corresponding path program 2 times [2024-06-14 12:45:44,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:44,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615748017] [2024-06-14 12:45:44,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:44,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:44,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:45,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:45,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:45,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615748017] [2024-06-14 12:45:45,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615748017] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:45,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:45,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:45:45,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174032219] [2024-06-14 12:45:45,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:45,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:45:45,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:45,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:45:45,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:45:45,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:45:45,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 277 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:45,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:45,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:45:45,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:45,589 INFO L124 PetriNetUnfolderBase]: 193/361 cut-off events. [2024-06-14 12:45:45,590 INFO L125 PetriNetUnfolderBase]: For 1672/1672 co-relation queries the response was YES. [2024-06-14 12:45:45,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1431 conditions, 361 events. 193/361 cut-off events. For 1672/1672 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1354 event pairs, 42 based on Foata normal form. 2/361 useless extension candidates. Maximal degree in co-relation 1403. Up to 300 conditions per place. [2024-06-14 12:45:45,593 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 42 selfloop transitions, 18 changer transitions 0/63 dead transitions. [2024-06-14 12:45:45,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 63 transitions, 453 flow [2024-06-14 12:45:45,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:45:45,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:45:45,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 92 transitions. [2024-06-14 12:45:45,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2024-06-14 12:45:45,595 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 277 flow. Second operand 7 states and 92 transitions. [2024-06-14 12:45:45,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 63 transitions, 453 flow [2024-06-14 12:45:45,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 63 transitions, 429 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-14 12:45:45,599 INFO L231 Difference]: Finished difference. Result has 60 places, 50 transitions, 318 flow [2024-06-14 12:45:45,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=318, PETRI_PLACES=60, PETRI_TRANSITIONS=50} [2024-06-14 12:45:45,601 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 29 predicate places. [2024-06-14 12:45:45,601 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 318 flow [2024-06-14 12:45:45,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:45,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:45,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:45,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-14 12:45:45,602 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 12:45:45,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:45,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1087392142, now seen corresponding path program 3 times [2024-06-14 12:45:45,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:45,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887932641] [2024-06-14 12:45:45,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:45,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:45,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:46,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:46,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:46,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887932641] [2024-06-14 12:45:46,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887932641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:46,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:46,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:45:46,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212849410] [2024-06-14 12:45:46,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:46,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:45:46,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:46,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:45:46,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:45:46,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:45:46,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 50 transitions, 318 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:46,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:46,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:45:46,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:46,670 INFO L124 PetriNetUnfolderBase]: 199/373 cut-off events. [2024-06-14 12:45:46,671 INFO L125 PetriNetUnfolderBase]: For 2144/2144 co-relation queries the response was YES. [2024-06-14 12:45:46,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1562 conditions, 373 events. 199/373 cut-off events. For 2144/2144 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1427 event pairs, 44 based on Foata normal form. 2/373 useless extension candidates. Maximal degree in co-relation 1533. Up to 299 conditions per place. [2024-06-14 12:45:46,674 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 40 selfloop transitions, 20 changer transitions 0/63 dead transitions. [2024-06-14 12:45:46,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 63 transitions, 490 flow [2024-06-14 12:45:46,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:45:46,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:45:46,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 92 transitions. [2024-06-14 12:45:46,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2024-06-14 12:45:46,676 INFO L175 Difference]: Start difference. First operand has 60 places, 50 transitions, 318 flow. Second operand 7 states and 92 transitions. [2024-06-14 12:45:46,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 63 transitions, 490 flow [2024-06-14 12:45:46,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 63 transitions, 443 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-14 12:45:46,680 INFO L231 Difference]: Finished difference. Result has 62 places, 52 transitions, 340 flow [2024-06-14 12:45:46,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=340, PETRI_PLACES=62, PETRI_TRANSITIONS=52} [2024-06-14 12:45:46,680 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 31 predicate places. [2024-06-14 12:45:46,681 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 52 transitions, 340 flow [2024-06-14 12:45:46,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:46,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:46,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:46,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-14 12:45:46,681 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 12:45:46,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:46,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1087392359, now seen corresponding path program 1 times [2024-06-14 12:45:46,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:46,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968655515] [2024-06-14 12:45:46,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:46,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:46,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:47,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:47,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:47,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968655515] [2024-06-14 12:45:47,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968655515] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:47,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:47,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:45:47,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871190034] [2024-06-14 12:45:47,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:47,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:45:47,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:47,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:45:47,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:45:47,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:45:47,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 52 transitions, 340 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:47,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:47,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:45:47,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:48,050 INFO L124 PetriNetUnfolderBase]: 202/378 cut-off events. [2024-06-14 12:45:48,050 INFO L125 PetriNetUnfolderBase]: For 2086/2086 co-relation queries the response was YES. [2024-06-14 12:45:48,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1573 conditions, 378 events. 202/378 cut-off events. For 2086/2086 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1439 event pairs, 41 based on Foata normal form. 1/377 useless extension candidates. Maximal degree in co-relation 1543. Up to 337 conditions per place. [2024-06-14 12:45:48,053 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 49 selfloop transitions, 12 changer transitions 0/64 dead transitions. [2024-06-14 12:45:48,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 64 transitions, 502 flow [2024-06-14 12:45:48,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:45:48,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:45:48,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-06-14 12:45:48,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-06-14 12:45:48,056 INFO L175 Difference]: Start difference. First operand has 62 places, 52 transitions, 340 flow. Second operand 7 states and 88 transitions. [2024-06-14 12:45:48,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 64 transitions, 502 flow [2024-06-14 12:45:48,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 64 transitions, 453 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-14 12:45:48,062 INFO L231 Difference]: Finished difference. Result has 64 places, 54 transitions, 334 flow [2024-06-14 12:45:48,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=334, PETRI_PLACES=64, PETRI_TRANSITIONS=54} [2024-06-14 12:45:48,063 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 33 predicate places. [2024-06-14 12:45:48,063 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 54 transitions, 334 flow [2024-06-14 12:45:48,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:48,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:48,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:48,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-14 12:45:48,064 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 12:45:48,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:48,065 INFO L85 PathProgramCache]: Analyzing trace with hash 80955270, now seen corresponding path program 4 times [2024-06-14 12:45:48,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:48,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767379381] [2024-06-14 12:45:48,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:48,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:48,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:48,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:48,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:48,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767379381] [2024-06-14 12:45:48,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767379381] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:48,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:48,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:45:48,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117384225] [2024-06-14 12:45:48,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:48,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:45:48,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:48,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:45:48,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:45:48,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:45:48,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 54 transitions, 334 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:48,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:48,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:45:48,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:49,090 INFO L124 PetriNetUnfolderBase]: 203/383 cut-off events. [2024-06-14 12:45:49,090 INFO L125 PetriNetUnfolderBase]: For 2417/2420 co-relation queries the response was YES. [2024-06-14 12:45:49,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1606 conditions, 383 events. 203/383 cut-off events. For 2417/2420 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1491 event pairs, 49 based on Foata normal form. 2/380 useless extension candidates. Maximal degree in co-relation 1575. Up to 294 conditions per place. [2024-06-14 12:45:49,094 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 38 selfloop transitions, 24 changer transitions 0/65 dead transitions. [2024-06-14 12:45:49,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 65 transitions, 504 flow [2024-06-14 12:45:49,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:45:49,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:45:49,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-06-14 12:45:49,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-14 12:45:49,095 INFO L175 Difference]: Start difference. First operand has 64 places, 54 transitions, 334 flow. Second operand 7 states and 91 transitions. [2024-06-14 12:45:49,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 65 transitions, 504 flow [2024-06-14 12:45:49,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 65 transitions, 477 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-14 12:45:49,100 INFO L231 Difference]: Finished difference. Result has 66 places, 56 transitions, 384 flow [2024-06-14 12:45:49,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=384, PETRI_PLACES=66, PETRI_TRANSITIONS=56} [2024-06-14 12:45:49,100 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 35 predicate places. [2024-06-14 12:45:49,101 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 56 transitions, 384 flow [2024-06-14 12:45:49,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:49,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:49,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:49,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-14 12:45:49,101 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 12:45:49,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:49,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1284361729, now seen corresponding path program 2 times [2024-06-14 12:45:49,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:49,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898833797] [2024-06-14 12:45:49,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:49,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:49,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:50,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:50,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:50,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898833797] [2024-06-14 12:45:50,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898833797] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:50,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:50,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:45:50,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821598321] [2024-06-14 12:45:50,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:50,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:45:50,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:50,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:45:50,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:45:50,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:45:50,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 56 transitions, 384 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:50,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:50,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:45:50,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:50,356 INFO L124 PetriNetUnfolderBase]: 206/388 cut-off events. [2024-06-14 12:45:50,357 INFO L125 PetriNetUnfolderBase]: For 2792/2795 co-relation queries the response was YES. [2024-06-14 12:45:50,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1716 conditions, 388 events. 206/388 cut-off events. For 2792/2795 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1509 event pairs, 44 based on Foata normal form. 3/387 useless extension candidates. Maximal degree in co-relation 1684. Up to 338 conditions per place. [2024-06-14 12:45:50,360 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 48 selfloop transitions, 15 changer transitions 0/66 dead transitions. [2024-06-14 12:45:50,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 66 transitions, 548 flow [2024-06-14 12:45:50,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:45:50,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:45:50,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2024-06-14 12:45:50,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38839285714285715 [2024-06-14 12:45:50,362 INFO L175 Difference]: Start difference. First operand has 66 places, 56 transitions, 384 flow. Second operand 7 states and 87 transitions. [2024-06-14 12:45:50,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 66 transitions, 548 flow [2024-06-14 12:45:50,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 66 transitions, 487 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-14 12:45:50,366 INFO L231 Difference]: Finished difference. Result has 68 places, 58 transitions, 376 flow [2024-06-14 12:45:50,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=376, PETRI_PLACES=68, PETRI_TRANSITIONS=58} [2024-06-14 12:45:50,367 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 37 predicate places. [2024-06-14 12:45:50,367 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 58 transitions, 376 flow [2024-06-14 12:45:50,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:50,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:50,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:50,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-14 12:45:50,368 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 12:45:50,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:50,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1294312709, now seen corresponding path program 3 times [2024-06-14 12:45:50,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:50,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292263805] [2024-06-14 12:45:50,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:50,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:50,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:51,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:51,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:51,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292263805] [2024-06-14 12:45:51,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292263805] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:51,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:51,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:45:51,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489547210] [2024-06-14 12:45:51,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:51,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:45:51,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:51,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:45:51,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:45:51,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:45:51,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 58 transitions, 376 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:51,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:51,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:45:51,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:51,604 INFO L124 PetriNetUnfolderBase]: 204/385 cut-off events. [2024-06-14 12:45:51,605 INFO L125 PetriNetUnfolderBase]: For 2985/2988 co-relation queries the response was YES. [2024-06-14 12:45:51,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1706 conditions, 385 events. 204/385 cut-off events. For 2985/2988 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1503 event pairs, 44 based on Foata normal form. 3/384 useless extension candidates. Maximal degree in co-relation 1673. Up to 326 conditions per place. [2024-06-14 12:45:51,609 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 47 selfloop transitions, 20 changer transitions 0/70 dead transitions. [2024-06-14 12:45:51,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 70 transitions, 562 flow [2024-06-14 12:45:51,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:45:51,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:45:51,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-06-14 12:45:51,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-06-14 12:45:51,610 INFO L175 Difference]: Start difference. First operand has 68 places, 58 transitions, 376 flow. Second operand 7 states and 88 transitions. [2024-06-14 12:45:51,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 70 transitions, 562 flow [2024-06-14 12:45:51,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 70 transitions, 525 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-14 12:45:51,615 INFO L231 Difference]: Finished difference. Result has 71 places, 62 transitions, 427 flow [2024-06-14 12:45:51,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=427, PETRI_PLACES=71, PETRI_TRANSITIONS=62} [2024-06-14 12:45:51,616 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 40 predicate places. [2024-06-14 12:45:51,616 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 62 transitions, 427 flow [2024-06-14 12:45:51,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:51,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:51,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:51,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-14 12:45:51,617 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 12:45:51,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:51,617 INFO L85 PathProgramCache]: Analyzing trace with hash -390541517, now seen corresponding path program 1 times [2024-06-14 12:45:51,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:51,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088021507] [2024-06-14 12:45:51,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:51,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:51,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:52,637 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 12:45:52,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:52,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088021507] [2024-06-14 12:45:52,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088021507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:52,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:52,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:45:52,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418163305] [2024-06-14 12:45:52,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:52,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:45:52,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:52,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:45:52,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:45:52,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:45:52,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 62 transitions, 427 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 12:45:52,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:52,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:45:52,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:53,013 INFO L124 PetriNetUnfolderBase]: 202/381 cut-off events. [2024-06-14 12:45:53,014 INFO L125 PetriNetUnfolderBase]: For 3322/3322 co-relation queries the response was YES. [2024-06-14 12:45:53,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1752 conditions, 381 events. 202/381 cut-off events. For 3322/3322 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1481 event pairs, 40 based on Foata normal form. 1/380 useless extension candidates. Maximal degree in co-relation 1717. Up to 312 conditions per place. [2024-06-14 12:45:53,017 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 59 selfloop transitions, 18 changer transitions 0/80 dead transitions. [2024-06-14 12:45:53,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 80 transitions, 653 flow [2024-06-14 12:45:53,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:45:53,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:45:53,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-14 12:45:53,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-14 12:45:53,018 INFO L175 Difference]: Start difference. First operand has 71 places, 62 transitions, 427 flow. Second operand 8 states and 104 transitions. [2024-06-14 12:45:53,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 80 transitions, 653 flow [2024-06-14 12:45:53,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 80 transitions, 623 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-14 12:45:53,023 INFO L231 Difference]: Finished difference. Result has 76 places, 64 transitions, 466 flow [2024-06-14 12:45:53,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=466, PETRI_PLACES=76, PETRI_TRANSITIONS=64} [2024-06-14 12:45:53,024 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 45 predicate places. [2024-06-14 12:45:53,024 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 64 transitions, 466 flow [2024-06-14 12:45:53,024 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 12:45:53,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:53,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:53,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-14 12:45:53,025 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 12:45:53,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:53,025 INFO L85 PathProgramCache]: Analyzing trace with hash -655222065, now seen corresponding path program 1 times [2024-06-14 12:45:53,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:53,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375969812] [2024-06-14 12:45:53,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:53,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:53,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:53,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:53,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:53,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375969812] [2024-06-14 12:45:53,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375969812] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:53,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:53,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:45:53,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328973337] [2024-06-14 12:45:53,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:53,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:45:53,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:53,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:45:53,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:45:54,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:45:54,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 64 transitions, 466 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 12:45:54,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:54,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:45:54,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:54,271 INFO L124 PetriNetUnfolderBase]: 208/391 cut-off events. [2024-06-14 12:45:54,272 INFO L125 PetriNetUnfolderBase]: For 3905/3905 co-relation queries the response was YES. [2024-06-14 12:45:54,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1878 conditions, 391 events. 208/391 cut-off events. For 3905/3905 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1535 event pairs, 39 based on Foata normal form. 2/391 useless extension candidates. Maximal degree in co-relation 1841. Up to 316 conditions per place. [2024-06-14 12:45:54,275 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 57 selfloop transitions, 21 changer transitions 0/81 dead transitions. [2024-06-14 12:45:54,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 81 transitions, 688 flow [2024-06-14 12:45:54,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:45:54,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:45:54,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-14 12:45:54,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40234375 [2024-06-14 12:45:54,277 INFO L175 Difference]: Start difference. First operand has 76 places, 64 transitions, 466 flow. Second operand 8 states and 103 transitions. [2024-06-14 12:45:54,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 81 transitions, 688 flow [2024-06-14 12:45:54,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 81 transitions, 635 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-14 12:45:54,283 INFO L231 Difference]: Finished difference. Result has 78 places, 67 transitions, 492 flow [2024-06-14 12:45:54,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=492, PETRI_PLACES=78, PETRI_TRANSITIONS=67} [2024-06-14 12:45:54,283 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 47 predicate places. [2024-06-14 12:45:54,283 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 67 transitions, 492 flow [2024-06-14 12:45:54,284 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 12:45:54,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:54,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:54,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-14 12:45:54,284 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 12:45:54,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:54,285 INFO L85 PathProgramCache]: Analyzing trace with hash -650580435, now seen corresponding path program 2 times [2024-06-14 12:45:54,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:54,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037876372] [2024-06-14 12:45:54,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:54,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:54,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:55,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:55,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:55,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037876372] [2024-06-14 12:45:55,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037876372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:55,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:55,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:45:55,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197453822] [2024-06-14 12:45:55,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:55,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:45:55,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:55,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:45:55,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:45:55,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:45:55,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 67 transitions, 492 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 12:45:55,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:55,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:45:55,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:55,668 INFO L124 PetriNetUnfolderBase]: 214/401 cut-off events. [2024-06-14 12:45:55,668 INFO L125 PetriNetUnfolderBase]: For 4534/4534 co-relation queries the response was YES. [2024-06-14 12:45:55,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2008 conditions, 401 events. 214/401 cut-off events. For 4534/4534 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1572 event pairs, 41 based on Foata normal form. 2/401 useless extension candidates. Maximal degree in co-relation 1970. Up to 319 conditions per place. [2024-06-14 12:45:55,672 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 56 selfloop transitions, 23 changer transitions 0/82 dead transitions. [2024-06-14 12:45:55,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 82 transitions, 718 flow [2024-06-14 12:45:55,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:45:55,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:45:55,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-14 12:45:55,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40234375 [2024-06-14 12:45:55,674 INFO L175 Difference]: Start difference. First operand has 78 places, 67 transitions, 492 flow. Second operand 8 states and 103 transitions. [2024-06-14 12:45:55,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 82 transitions, 718 flow [2024-06-14 12:45:55,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 82 transitions, 663 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-14 12:45:55,681 INFO L231 Difference]: Finished difference. Result has 80 places, 70 transitions, 525 flow [2024-06-14 12:45:55,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=525, PETRI_PLACES=80, PETRI_TRANSITIONS=70} [2024-06-14 12:45:55,681 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 49 predicate places. [2024-06-14 12:45:55,682 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 70 transitions, 525 flow [2024-06-14 12:45:55,682 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 12:45:55,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:55,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:55,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-14 12:45:55,683 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 12:45:55,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:55,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1957835775, now seen corresponding path program 3 times [2024-06-14 12:45:55,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:55,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336485266] [2024-06-14 12:45:55,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:55,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:55,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:56,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:56,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:56,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336485266] [2024-06-14 12:45:56,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336485266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:56,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:56,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:45:56,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680059146] [2024-06-14 12:45:56,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:56,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:45:56,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:56,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:45:56,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:45:56,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:45:56,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 70 transitions, 525 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 12:45:56,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:56,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:45:56,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:57,086 INFO L124 PetriNetUnfolderBase]: 217/406 cut-off events. [2024-06-14 12:45:57,087 INFO L125 PetriNetUnfolderBase]: For 5020/5020 co-relation queries the response was YES. [2024-06-14 12:45:57,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2107 conditions, 406 events. 217/406 cut-off events. For 5020/5020 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1605 event pairs, 41 based on Foata normal form. 1/405 useless extension candidates. Maximal degree in co-relation 2068. Up to 308 conditions per place. [2024-06-14 12:45:57,090 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 51 selfloop transitions, 29 changer transitions 0/83 dead transitions. [2024-06-14 12:45:57,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 83 transitions, 739 flow [2024-06-14 12:45:57,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:45:57,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:45:57,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-14 12:45:57,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40234375 [2024-06-14 12:45:57,091 INFO L175 Difference]: Start difference. First operand has 80 places, 70 transitions, 525 flow. Second operand 8 states and 103 transitions. [2024-06-14 12:45:57,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 83 transitions, 739 flow [2024-06-14 12:45:57,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 83 transitions, 673 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-14 12:45:57,103 INFO L231 Difference]: Finished difference. Result has 82 places, 72 transitions, 546 flow [2024-06-14 12:45:57,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=546, PETRI_PLACES=82, PETRI_TRANSITIONS=72} [2024-06-14 12:45:57,104 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 51 predicate places. [2024-06-14 12:45:57,104 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 72 transitions, 546 flow [2024-06-14 12:45:57,104 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 12:45:57,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:57,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:57,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-14 12:45:57,105 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 12:45:57,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:57,105 INFO L85 PathProgramCache]: Analyzing trace with hash -650573677, now seen corresponding path program 1 times [2024-06-14 12:45:57,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:57,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673095938] [2024-06-14 12:45:57,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:57,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:57,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:58,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:58,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:58,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673095938] [2024-06-14 12:45:58,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673095938] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:58,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:58,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:45:58,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291276680] [2024-06-14 12:45:58,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:58,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:45:58,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:58,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:45:58,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:45:58,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:45:58,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 72 transitions, 546 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 12:45:58,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:58,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:45:58,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:58,496 INFO L124 PetriNetUnfolderBase]: 223/416 cut-off events. [2024-06-14 12:45:58,496 INFO L125 PetriNetUnfolderBase]: For 5713/5713 co-relation queries the response was YES. [2024-06-14 12:45:58,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2207 conditions, 416 events. 223/416 cut-off events. For 5713/5713 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1646 event pairs, 38 based on Foata normal form. 2/416 useless extension candidates. Maximal degree in co-relation 2167. Up to 367 conditions per place. [2024-06-14 12:45:58,500 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 69 selfloop transitions, 14 changer transitions 0/86 dead transitions. [2024-06-14 12:45:58,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 86 transitions, 764 flow [2024-06-14 12:45:58,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:45:58,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:45:58,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-14 12:45:58,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38671875 [2024-06-14 12:45:58,501 INFO L175 Difference]: Start difference. First operand has 82 places, 72 transitions, 546 flow. Second operand 8 states and 99 transitions. [2024-06-14 12:45:58,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 86 transitions, 764 flow [2024-06-14 12:45:58,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 86 transitions, 693 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-14 12:45:58,510 INFO L231 Difference]: Finished difference. Result has 84 places, 74 transitions, 530 flow [2024-06-14 12:45:58,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=530, PETRI_PLACES=84, PETRI_TRANSITIONS=74} [2024-06-14 12:45:58,510 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 53 predicate places. [2024-06-14 12:45:58,510 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 74 transitions, 530 flow [2024-06-14 12:45:58,511 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 12:45:58,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:58,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:58,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-14 12:45:58,512 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 12:45:58,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:58,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1460708909, now seen corresponding path program 4 times [2024-06-14 12:45:58,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:58,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042799739] [2024-06-14 12:45:58,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:58,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:58,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:59,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:59,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:59,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042799739] [2024-06-14 12:45:59,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042799739] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:59,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:59,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:45:59,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44943035] [2024-06-14 12:45:59,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:59,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:45:59,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:59,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:45:59,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:45:59,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:45:59,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 74 transitions, 530 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 12:45:59,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:59,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:45:59,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:59,821 INFO L124 PetriNetUnfolderBase]: 229/427 cut-off events. [2024-06-14 12:45:59,821 INFO L125 PetriNetUnfolderBase]: For 6296/6299 co-relation queries the response was YES. [2024-06-14 12:45:59,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2283 conditions, 427 events. 229/427 cut-off events. For 6296/6299 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1710 event pairs, 46 based on Foata normal form. 2/424 useless extension candidates. Maximal degree in co-relation 2242. Up to 332 conditions per place. [2024-06-14 12:45:59,826 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 57 selfloop transitions, 27 changer transitions 0/87 dead transitions. [2024-06-14 12:45:59,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 87 transitions, 778 flow [2024-06-14 12:45:59,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:45:59,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:45:59,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-14 12:45:59,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-14 12:45:59,827 INFO L175 Difference]: Start difference. First operand has 84 places, 74 transitions, 530 flow. Second operand 8 states and 102 transitions. [2024-06-14 12:45:59,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 87 transitions, 778 flow [2024-06-14 12:45:59,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 87 transitions, 739 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-14 12:45:59,836 INFO L231 Difference]: Finished difference. Result has 86 places, 77 transitions, 597 flow [2024-06-14 12:45:59,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=597, PETRI_PLACES=86, PETRI_TRANSITIONS=77} [2024-06-14 12:45:59,836 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 55 predicate places. [2024-06-14 12:45:59,837 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 77 transitions, 597 flow [2024-06-14 12:45:59,837 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 12:45:59,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:59,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:59,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-14 12:45:59,837 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 12:45:59,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:59,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1460715667, now seen corresponding path program 2 times [2024-06-14 12:45:59,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:59,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018415697] [2024-06-14 12:45:59,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:59,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:59,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:00,927 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 12:46:00,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:00,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018415697] [2024-06-14 12:46:00,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018415697] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:00,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:00,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:46:00,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847840273] [2024-06-14 12:46:00,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:00,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:46:00,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:00,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:46:00,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:46:01,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:46:01,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 77 transitions, 597 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 12:46:01,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:01,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:46:01,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:01,213 INFO L124 PetriNetUnfolderBase]: 235/437 cut-off events. [2024-06-14 12:46:01,214 INFO L125 PetriNetUnfolderBase]: For 7088/7091 co-relation queries the response was YES. [2024-06-14 12:46:01,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2430 conditions, 437 events. 235/437 cut-off events. For 7088/7091 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1746 event pairs, 43 based on Foata normal form. 4/437 useless extension candidates. Maximal degree in co-relation 2388. Up to 381 conditions per place. [2024-06-14 12:46:01,218 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 69 selfloop transitions, 17 changer transitions 0/89 dead transitions. [2024-06-14 12:46:01,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 89 transitions, 819 flow [2024-06-14 12:46:01,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:46:01,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:46:01,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-14 12:46:01,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-14 12:46:01,219 INFO L175 Difference]: Start difference. First operand has 86 places, 77 transitions, 597 flow. Second operand 8 states and 98 transitions. [2024-06-14 12:46:01,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 89 transitions, 819 flow [2024-06-14 12:46:01,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 89 transitions, 735 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-14 12:46:01,231 INFO L231 Difference]: Finished difference. Result has 88 places, 79 transitions, 578 flow [2024-06-14 12:46:01,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=513, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=578, PETRI_PLACES=88, PETRI_TRANSITIONS=79} [2024-06-14 12:46:01,232 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 57 predicate places. [2024-06-14 12:46:01,232 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 79 transitions, 578 flow [2024-06-14 12:46:01,232 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 12:46:01,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:01,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:01,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-14 12:46:01,233 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 12:46:01,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:01,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1469286547, now seen corresponding path program 3 times [2024-06-14 12:46:01,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:01,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048860414] [2024-06-14 12:46:01,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:01,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:01,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:02,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:46:02,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:02,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048860414] [2024-06-14 12:46:02,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048860414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:02,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:02,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:46:02,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817379846] [2024-06-14 12:46:02,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:02,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:46:02,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:02,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:46:02,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:46:02,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:46:02,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 79 transitions, 578 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 12:46:02,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:02,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:46:02,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:02,708 INFO L124 PetriNetUnfolderBase]: 238/441 cut-off events. [2024-06-14 12:46:02,708 INFO L125 PetriNetUnfolderBase]: For 7314/7314 co-relation queries the response was YES. [2024-06-14 12:46:02,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2446 conditions, 441 events. 238/441 cut-off events. For 7314/7314 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1772 event pairs, 41 based on Foata normal form. 1/440 useless extension candidates. Maximal degree in co-relation 2403. Up to 405 conditions per place. [2024-06-14 12:46:02,712 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 76 selfloop transitions, 12 changer transitions 0/91 dead transitions. [2024-06-14 12:46:02,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 91 transitions, 802 flow [2024-06-14 12:46:02,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:46:02,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:46:02,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-14 12:46:02,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37109375 [2024-06-14 12:46:02,714 INFO L175 Difference]: Start difference. First operand has 88 places, 79 transitions, 578 flow. Second operand 8 states and 95 transitions. [2024-06-14 12:46:02,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 91 transitions, 802 flow [2024-06-14 12:46:02,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 91 transitions, 753 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-14 12:46:02,724 INFO L231 Difference]: Finished difference. Result has 91 places, 83 transitions, 595 flow [2024-06-14 12:46:02,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=595, PETRI_PLACES=91, PETRI_TRANSITIONS=83} [2024-06-14 12:46:02,724 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 60 predicate places. [2024-06-14 12:46:02,724 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 83 transitions, 595 flow [2024-06-14 12:46:02,725 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 12:46:02,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:02,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:02,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-14 12:46:02,725 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 12:46:02,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:02,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1468989629, now seen corresponding path program 5 times [2024-06-14 12:46:02,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:02,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886026508] [2024-06-14 12:46:02,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:02,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:02,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:03,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:46:03,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:03,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886026508] [2024-06-14 12:46:03,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886026508] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:03,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:03,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:46:03,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320113946] [2024-06-14 12:46:03,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:03,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:46:03,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:03,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:46:03,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:46:03,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:46:03,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 83 transitions, 595 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 12:46:03,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:03,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:46:03,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:03,866 INFO L124 PetriNetUnfolderBase]: 241/447 cut-off events. [2024-06-14 12:46:03,866 INFO L125 PetriNetUnfolderBase]: For 7957/7960 co-relation queries the response was YES. [2024-06-14 12:46:03,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2509 conditions, 447 events. 241/447 cut-off events. For 7957/7960 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1811 event pairs, 46 based on Foata normal form. 1/443 useless extension candidates. Maximal degree in co-relation 2464. Up to 314 conditions per place. [2024-06-14 12:46:03,869 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 51 selfloop transitions, 43 changer transitions 0/97 dead transitions. [2024-06-14 12:46:03,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 97 transitions, 917 flow [2024-06-14 12:46:03,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:46:03,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:46:03,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-14 12:46:03,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-14 12:46:03,870 INFO L175 Difference]: Start difference. First operand has 91 places, 83 transitions, 595 flow. Second operand 8 states and 104 transitions. [2024-06-14 12:46:03,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 97 transitions, 917 flow [2024-06-14 12:46:03,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 97 transitions, 878 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-14 12:46:03,879 INFO L231 Difference]: Finished difference. Result has 96 places, 87 transitions, 733 flow [2024-06-14 12:46:03,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=733, PETRI_PLACES=96, PETRI_TRANSITIONS=87} [2024-06-14 12:46:03,880 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 65 predicate places. [2024-06-14 12:46:03,880 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 87 transitions, 733 flow [2024-06-14 12:46:03,880 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 12:46:03,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:03,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:03,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-14 12:46:03,881 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 12:46:03,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:03,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1468989877, now seen corresponding path program 4 times [2024-06-14 12:46:03,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:03,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122601237] [2024-06-14 12:46:03,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:03,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:03,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:04,855 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 12:46:04,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:04,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122601237] [2024-06-14 12:46:04,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122601237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:04,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:04,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:46:04,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464331821] [2024-06-14 12:46:04,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:04,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:46:04,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:04,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:46:04,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:46:04,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:46:04,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 87 transitions, 733 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 12:46:04,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:04,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:46:04,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:05,084 INFO L124 PetriNetUnfolderBase]: 239/444 cut-off events. [2024-06-14 12:46:05,084 INFO L125 PetriNetUnfolderBase]: For 8660/8663 co-relation queries the response was YES. [2024-06-14 12:46:05,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2669 conditions, 444 events. 239/444 cut-off events. For 8660/8663 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1797 event pairs, 40 based on Foata normal form. 3/443 useless extension candidates. Maximal degree in co-relation 2621. Up to 370 conditions per place. [2024-06-14 12:46:05,088 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 72 selfloop transitions, 26 changer transitions 0/101 dead transitions. [2024-06-14 12:46:05,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 101 transitions, 991 flow [2024-06-14 12:46:05,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:46:05,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:46:05,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-14 12:46:05,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-14 12:46:05,090 INFO L175 Difference]: Start difference. First operand has 96 places, 87 transitions, 733 flow. Second operand 8 states and 100 transitions. [2024-06-14 12:46:05,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 101 transitions, 991 flow [2024-06-14 12:46:05,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 101 transitions, 931 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-14 12:46:05,102 INFO L231 Difference]: Finished difference. Result has 101 places, 92 transitions, 785 flow [2024-06-14 12:46:05,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=673, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=785, PETRI_PLACES=101, PETRI_TRANSITIONS=92} [2024-06-14 12:46:05,102 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 70 predicate places. [2024-06-14 12:46:05,102 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 92 transitions, 785 flow [2024-06-14 12:46:05,103 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 12:46:05,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:05,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:05,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-14 12:46:05,103 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 12:46:05,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:05,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1460715419, now seen corresponding path program 6 times [2024-06-14 12:46:05,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:05,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421008283] [2024-06-14 12:46:05,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:05,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:05,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:05,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:46:05,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:05,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421008283] [2024-06-14 12:46:05,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421008283] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:05,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:05,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:46:05,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143682192] [2024-06-14 12:46:05,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:05,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:46:05,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:05,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:46:05,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:46:06,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:46:06,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 92 transitions, 785 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 12:46:06,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:06,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:46:06,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:06,261 INFO L124 PetriNetUnfolderBase]: 237/441 cut-off events. [2024-06-14 12:46:06,261 INFO L125 PetriNetUnfolderBase]: For 8769/8772 co-relation queries the response was YES. [2024-06-14 12:46:06,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2705 conditions, 441 events. 237/441 cut-off events. For 8769/8772 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1789 event pairs, 45 based on Foata normal form. 1/437 useless extension candidates. Maximal degree in co-relation 2654. Up to 340 conditions per place. [2024-06-14 12:46:06,270 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 69 selfloop transitions, 30 changer transitions 0/102 dead transitions. [2024-06-14 12:46:06,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 102 transitions, 1035 flow [2024-06-14 12:46:06,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:46:06,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:46:06,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-14 12:46:06,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-14 12:46:06,273 INFO L175 Difference]: Start difference. First operand has 101 places, 92 transitions, 785 flow. Second operand 8 states and 104 transitions. [2024-06-14 12:46:06,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 102 transitions, 1035 flow [2024-06-14 12:46:06,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 102 transitions, 991 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-14 12:46:06,288 INFO L231 Difference]: Finished difference. Result has 105 places, 92 transitions, 806 flow [2024-06-14 12:46:06,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=741, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=806, PETRI_PLACES=105, PETRI_TRANSITIONS=92} [2024-06-14 12:46:06,289 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 74 predicate places. [2024-06-14 12:46:06,289 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 92 transitions, 806 flow [2024-06-14 12:46:06,290 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 12:46:06,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:06,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:06,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-14 12:46:06,290 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 12:46:06,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:06,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1469297459, now seen corresponding path program 1 times [2024-06-14 12:46:06,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:06,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740487592] [2024-06-14 12:46:06,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:06,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:06,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:07,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:46:07,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:07,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740487592] [2024-06-14 12:46:07,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740487592] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:07,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:07,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:46:07,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413848282] [2024-06-14 12:46:07,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:07,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:46:07,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:07,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:46:07,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:46:07,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:46:07,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 92 transitions, 806 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:46:07,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:07,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:46:07,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:07,681 INFO L124 PetriNetUnfolderBase]: 221/420 cut-off events. [2024-06-14 12:46:07,681 INFO L125 PetriNetUnfolderBase]: For 9089/9094 co-relation queries the response was YES. [2024-06-14 12:46:07,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2589 conditions, 420 events. 221/420 cut-off events. For 9089/9094 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1705 event pairs, 38 based on Foata normal form. 7/424 useless extension candidates. Maximal degree in co-relation 2536. Up to 344 conditions per place. [2024-06-14 12:46:07,685 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 72 selfloop transitions, 12 changer transitions 0/101 dead transitions. [2024-06-14 12:46:07,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 101 transitions, 996 flow [2024-06-14 12:46:07,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:46:07,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:46:07,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-14 12:46:07,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-14 12:46:07,687 INFO L175 Difference]: Start difference. First operand has 105 places, 92 transitions, 806 flow. Second operand 8 states and 102 transitions. [2024-06-14 12:46:07,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 101 transitions, 996 flow [2024-06-14 12:46:07,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 101 transitions, 881 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-14 12:46:07,701 INFO L231 Difference]: Finished difference. Result has 105 places, 92 transitions, 719 flow [2024-06-14 12:46:07,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=691, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=719, PETRI_PLACES=105, PETRI_TRANSITIONS=92} [2024-06-14 12:46:07,702 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 74 predicate places. [2024-06-14 12:46:07,702 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 92 transitions, 719 flow [2024-06-14 12:46:07,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:46:07,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:07,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:07,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-14 12:46:07,703 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 12:46:07,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:07,703 INFO L85 PathProgramCache]: Analyzing trace with hash -711182526, now seen corresponding path program 1 times [2024-06-14 12:46:07,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:07,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957457123] [2024-06-14 12:46:07,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:07,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:07,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:09,136 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 12:46:09,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:09,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957457123] [2024-06-14 12:46:09,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957457123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:09,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:09,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:46:09,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106738338] [2024-06-14 12:46:09,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:09,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:46:09,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:09,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:46:09,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:46:09,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:46:09,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 92 transitions, 719 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 12:46:09,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:09,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:46:09,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:09,558 INFO L124 PetriNetUnfolderBase]: 237/442 cut-off events. [2024-06-14 12:46:09,558 INFO L125 PetriNetUnfolderBase]: For 9254/9254 co-relation queries the response was YES. [2024-06-14 12:46:09,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2655 conditions, 442 events. 237/442 cut-off events. For 9254/9254 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1779 event pairs, 35 based on Foata normal form. 1/441 useless extension candidates. Maximal degree in co-relation 2602. Up to 368 conditions per place. [2024-06-14 12:46:09,563 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 88 selfloop transitions, 20 changer transitions 0/111 dead transitions. [2024-06-14 12:46:09,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 111 transitions, 1019 flow [2024-06-14 12:46:09,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:46:09,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:46:09,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-14 12:46:09,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-14 12:46:09,564 INFO L175 Difference]: Start difference. First operand has 105 places, 92 transitions, 719 flow. Second operand 9 states and 114 transitions. [2024-06-14 12:46:09,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 111 transitions, 1019 flow [2024-06-14 12:46:09,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 111 transitions, 979 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-14 12:46:09,575 INFO L231 Difference]: Finished difference. Result has 107 places, 94 transitions, 762 flow [2024-06-14 12:46:09,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=679, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=762, PETRI_PLACES=107, PETRI_TRANSITIONS=94} [2024-06-14 12:46:09,575 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 76 predicate places. [2024-06-14 12:46:09,575 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 94 transitions, 762 flow [2024-06-14 12:46:09,576 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 12:46:09,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:09,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:09,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-14 12:46:09,576 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 12:46:09,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:09,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1162954027, now seen corresponding path program 1 times [2024-06-14 12:46:09,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:09,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400016709] [2024-06-14 12:46:09,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:09,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:09,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:10,684 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 12:46:10,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:10,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400016709] [2024-06-14 12:46:10,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400016709] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:10,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:10,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:46:10,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941085013] [2024-06-14 12:46:10,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:10,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:46:10,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:10,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:46:10,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:46:10,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:46:10,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 94 transitions, 762 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 12:46:10,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:10,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:46:10,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:11,048 INFO L124 PetriNetUnfolderBase]: 249/462 cut-off events. [2024-06-14 12:46:11,048 INFO L125 PetriNetUnfolderBase]: For 11297/11297 co-relation queries the response was YES. [2024-06-14 12:46:11,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2829 conditions, 462 events. 249/462 cut-off events. For 11297/11297 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1872 event pairs, 34 based on Foata normal form. 4/464 useless extension candidates. Maximal degree in co-relation 2776. Up to 373 conditions per place. [2024-06-14 12:46:11,060 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 86 selfloop transitions, 24 changer transitions 0/113 dead transitions. [2024-06-14 12:46:11,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 113 transitions, 1086 flow [2024-06-14 12:46:11,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:46:11,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:46:11,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-14 12:46:11,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993055555555556 [2024-06-14 12:46:11,061 INFO L175 Difference]: Start difference. First operand has 107 places, 94 transitions, 762 flow. Second operand 9 states and 115 transitions. [2024-06-14 12:46:11,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 113 transitions, 1086 flow [2024-06-14 12:46:11,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 113 transitions, 1019 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-14 12:46:11,076 INFO L231 Difference]: Finished difference. Result has 109 places, 97 transitions, 799 flow [2024-06-14 12:46:11,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=695, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=799, PETRI_PLACES=109, PETRI_TRANSITIONS=97} [2024-06-14 12:46:11,079 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 78 predicate places. [2024-06-14 12:46:11,079 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 97 transitions, 799 flow [2024-06-14 12:46:11,079 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 12:46:11,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:11,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:11,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-14 12:46:11,079 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 12:46:11,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:11,080 INFO L85 PathProgramCache]: Analyzing trace with hash -707457876, now seen corresponding path program 2 times [2024-06-14 12:46:11,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:11,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978651330] [2024-06-14 12:46:11,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:11,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:11,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:12,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:46:12,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:12,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978651330] [2024-06-14 12:46:12,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978651330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:12,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:12,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:46:12,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891739381] [2024-06-14 12:46:12,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:12,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:46:12,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:12,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:46:12,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:46:12,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:46:12,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 97 transitions, 799 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 12:46:12,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:12,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:46:12,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:12,982 INFO L124 PetriNetUnfolderBase]: 252/469 cut-off events. [2024-06-14 12:46:12,982 INFO L125 PetriNetUnfolderBase]: For 11186/11186 co-relation queries the response was YES. [2024-06-14 12:46:12,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2953 conditions, 469 events. 252/469 cut-off events. For 11186/11186 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1910 event pairs, 34 based on Foata normal form. 1/468 useless extension candidates. Maximal degree in co-relation 2899. Up to 387 conditions per place. [2024-06-14 12:46:12,986 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 88 selfloop transitions, 23 changer transitions 0/114 dead transitions. [2024-06-14 12:46:12,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 114 transitions, 1119 flow [2024-06-14 12:46:12,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:46:12,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:46:12,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-14 12:46:12,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923611111111111 [2024-06-14 12:46:12,987 INFO L175 Difference]: Start difference. First operand has 109 places, 97 transitions, 799 flow. Second operand 9 states and 113 transitions. [2024-06-14 12:46:12,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 114 transitions, 1119 flow [2024-06-14 12:46:12,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 114 transitions, 1037 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-14 12:46:13,000 INFO L231 Difference]: Finished difference. Result has 111 places, 99 transitions, 812 flow [2024-06-14 12:46:13,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=717, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=812, PETRI_PLACES=111, PETRI_TRANSITIONS=99} [2024-06-14 12:46:13,001 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 80 predicate places. [2024-06-14 12:46:13,001 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 99 transitions, 812 flow [2024-06-14 12:46:13,001 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 12:46:13,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:13,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:13,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-14 12:46:13,002 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 12:46:13,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:13,002 INFO L85 PathProgramCache]: Analyzing trace with hash -563365319, now seen corresponding path program 2 times [2024-06-14 12:46:13,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:13,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380308517] [2024-06-14 12:46:13,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:13,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:13,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:14,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:46:14,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:14,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380308517] [2024-06-14 12:46:14,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380308517] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:14,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:14,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:46:14,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755395969] [2024-06-14 12:46:14,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:14,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:46:14,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:14,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:46:14,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:46:14,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:46:14,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 99 transitions, 812 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 12:46:14,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:14,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:46:14,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:14,365 INFO L124 PetriNetUnfolderBase]: 288/527 cut-off events. [2024-06-14 12:46:14,365 INFO L125 PetriNetUnfolderBase]: For 15374/15374 co-relation queries the response was YES. [2024-06-14 12:46:14,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3465 conditions, 527 events. 288/527 cut-off events. For 15374/15374 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2210 event pairs, 38 based on Foata normal form. 2/527 useless extension candidates. Maximal degree in co-relation 3410. Up to 372 conditions per place. [2024-06-14 12:46:14,370 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 82 selfloop transitions, 39 changer transitions 0/124 dead transitions. [2024-06-14 12:46:14,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 124 transitions, 1347 flow [2024-06-14 12:46:14,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:46:14,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:46:14,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-14 12:46:14,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-14 12:46:14,371 INFO L175 Difference]: Start difference. First operand has 111 places, 99 transitions, 812 flow. Second operand 9 states and 120 transitions. [2024-06-14 12:46:14,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 124 transitions, 1347 flow [2024-06-14 12:46:14,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 124 transitions, 1268 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-14 12:46:14,392 INFO L231 Difference]: Finished difference. Result has 114 places, 107 transitions, 968 flow [2024-06-14 12:46:14,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=733, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=968, PETRI_PLACES=114, PETRI_TRANSITIONS=107} [2024-06-14 12:46:14,393 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 83 predicate places. [2024-06-14 12:46:14,393 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 107 transitions, 968 flow [2024-06-14 12:46:14,393 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 12:46:14,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:14,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:14,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-14 12:46:14,394 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 12:46:14,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:14,394 INFO L85 PathProgramCache]: Analyzing trace with hash -563365536, now seen corresponding path program 3 times [2024-06-14 12:46:14,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:14,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842256660] [2024-06-14 12:46:14,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:14,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:14,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:15,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:46:15,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:15,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842256660] [2024-06-14 12:46:15,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842256660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:15,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:15,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:46:15,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702031508] [2024-06-14 12:46:15,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:15,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:46:15,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:15,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:46:15,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:46:16,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:46:16,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 107 transitions, 968 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 12:46:16,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:16,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:46:16,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:16,357 INFO L124 PetriNetUnfolderBase]: 296/544 cut-off events. [2024-06-14 12:46:16,358 INFO L125 PetriNetUnfolderBase]: For 16984/16984 co-relation queries the response was YES. [2024-06-14 12:46:16,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3783 conditions, 544 events. 296/544 cut-off events. For 16984/16984 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2324 event pairs, 38 based on Foata normal form. 1/543 useless extension candidates. Maximal degree in co-relation 3726. Up to 428 conditions per place. [2024-06-14 12:46:16,362 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 87 selfloop transitions, 33 changer transitions 0/123 dead transitions. [2024-06-14 12:46:16,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 123 transitions, 1390 flow [2024-06-14 12:46:16,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:46:16,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:46:16,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-14 12:46:16,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-14 12:46:16,364 INFO L175 Difference]: Start difference. First operand has 114 places, 107 transitions, 968 flow. Second operand 9 states and 114 transitions. [2024-06-14 12:46:16,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 123 transitions, 1390 flow [2024-06-14 12:46:16,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 123 transitions, 1322 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-06-14 12:46:16,381 INFO L231 Difference]: Finished difference. Result has 119 places, 111 transitions, 1067 flow [2024-06-14 12:46:16,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=900, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1067, PETRI_PLACES=119, PETRI_TRANSITIONS=111} [2024-06-14 12:46:16,382 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 88 predicate places. [2024-06-14 12:46:16,382 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 111 transitions, 1067 flow [2024-06-14 12:46:16,383 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 12:46:16,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:16,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:16,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-14 12:46:16,383 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 12:46:16,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:16,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1307053807, now seen corresponding path program 3 times [2024-06-14 12:46:16,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:16,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121267766] [2024-06-14 12:46:16,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:16,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:16,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:17,389 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 12:46:17,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:17,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121267766] [2024-06-14 12:46:17,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121267766] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:17,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:17,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:46:17,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723637164] [2024-06-14 12:46:17,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:17,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:46:17,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:17,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:46:17,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:46:17,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:46:17,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 111 transitions, 1067 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 12:46:17,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:17,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:46:17,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:17,802 INFO L124 PetriNetUnfolderBase]: 292/538 cut-off events. [2024-06-14 12:46:17,803 INFO L125 PetriNetUnfolderBase]: For 17316/17316 co-relation queries the response was YES. [2024-06-14 12:46:17,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3693 conditions, 538 events. 292/538 cut-off events. For 17316/17316 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2302 event pairs, 38 based on Foata normal form. 2/538 useless extension candidates. Maximal degree in co-relation 3635. Up to 382 conditions per place. [2024-06-14 12:46:17,807 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 82 selfloop transitions, 41 changer transitions 0/126 dead transitions. [2024-06-14 12:46:17,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 126 transitions, 1420 flow [2024-06-14 12:46:17,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:46:17,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:46:17,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-14 12:46:17,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097222222222222 [2024-06-14 12:46:17,808 INFO L175 Difference]: Start difference. First operand has 119 places, 111 transitions, 1067 flow. Second operand 9 states and 118 transitions. [2024-06-14 12:46:17,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 126 transitions, 1420 flow [2024-06-14 12:46:17,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 126 transitions, 1331 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-14 12:46:17,827 INFO L231 Difference]: Finished difference. Result has 123 places, 111 transitions, 1066 flow [2024-06-14 12:46:17,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=978, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1066, PETRI_PLACES=123, PETRI_TRANSITIONS=111} [2024-06-14 12:46:17,827 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 92 predicate places. [2024-06-14 12:46:17,827 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 111 transitions, 1066 flow [2024-06-14 12:46:17,828 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 12:46:17,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:17,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:17,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-14 12:46:17,828 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 12:46:17,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:17,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1306844557, now seen corresponding path program 4 times [2024-06-14 12:46:17,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:17,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249704033] [2024-06-14 12:46:17,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:17,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:17,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:18,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:46:18,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:18,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249704033] [2024-06-14 12:46:18,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249704033] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:18,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:18,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:46:18,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866558603] [2024-06-14 12:46:18,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:18,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:46:18,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:18,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:46:18,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:46:18,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:46:18,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 111 transitions, 1066 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 12:46:18,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:18,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:46:18,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:19,226 INFO L124 PetriNetUnfolderBase]: 284/526 cut-off events. [2024-06-14 12:46:19,226 INFO L125 PetriNetUnfolderBase]: For 17041/17041 co-relation queries the response was YES. [2024-06-14 12:46:19,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3545 conditions, 526 events. 284/526 cut-off events. For 17041/17041 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2237 event pairs, 36 based on Foata normal form. 4/528 useless extension candidates. Maximal degree in co-relation 3485. Up to 424 conditions per place. [2024-06-14 12:46:19,231 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 95 selfloop transitions, 26 changer transitions 0/124 dead transitions. [2024-06-14 12:46:19,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 124 transitions, 1344 flow [2024-06-14 12:46:19,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:46:19,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:46:19,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-14 12:46:19,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993055555555556 [2024-06-14 12:46:19,233 INFO L175 Difference]: Start difference. First operand has 123 places, 111 transitions, 1066 flow. Second operand 9 states and 115 transitions. [2024-06-14 12:46:19,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 124 transitions, 1344 flow [2024-06-14 12:46:19,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 124 transitions, 1234 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-14 12:46:19,263 INFO L231 Difference]: Finished difference. Result has 125 places, 111 transitions, 1014 flow [2024-06-14 12:46:19,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=956, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1014, PETRI_PLACES=125, PETRI_TRANSITIONS=111} [2024-06-14 12:46:19,264 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 94 predicate places. [2024-06-14 12:46:19,264 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 111 transitions, 1014 flow [2024-06-14 12:46:19,264 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 12:46:19,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:19,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:19,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-14 12:46:19,265 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 12:46:19,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:19,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1306844340, now seen corresponding path program 4 times [2024-06-14 12:46:19,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:19,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842296661] [2024-06-14 12:46:19,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:19,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:19,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:20,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:46:20,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:20,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842296661] [2024-06-14 12:46:20,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842296661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:20,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:20,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:46:20,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358579761] [2024-06-14 12:46:20,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:20,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:46:20,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:20,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:46:20,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:46:20,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:46:20,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 111 transitions, 1014 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 12:46:20,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:20,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:46:20,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:20,835 INFO L124 PetriNetUnfolderBase]: 282/523 cut-off events. [2024-06-14 12:46:20,836 INFO L125 PetriNetUnfolderBase]: For 15327/15327 co-relation queries the response was YES. [2024-06-14 12:46:20,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3409 conditions, 523 events. 282/523 cut-off events. For 15327/15327 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2222 event pairs, 36 based on Foata normal form. 1/522 useless extension candidates. Maximal degree in co-relation 3348. Up to 430 conditions per place. [2024-06-14 12:46:20,840 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 95 selfloop transitions, 25 changer transitions 0/123 dead transitions. [2024-06-14 12:46:20,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 123 transitions, 1286 flow [2024-06-14 12:46:20,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:46:20,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:46:20,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-14 12:46:20,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923611111111111 [2024-06-14 12:46:20,841 INFO L175 Difference]: Start difference. First operand has 125 places, 111 transitions, 1014 flow. Second operand 9 states and 113 transitions. [2024-06-14 12:46:20,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 123 transitions, 1286 flow [2024-06-14 12:46:20,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 123 transitions, 1173 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-14 12:46:20,861 INFO L231 Difference]: Finished difference. Result has 125 places, 111 transitions, 956 flow [2024-06-14 12:46:20,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=901, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=956, PETRI_PLACES=125, PETRI_TRANSITIONS=111} [2024-06-14 12:46:20,862 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 94 predicate places. [2024-06-14 12:46:20,862 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 111 transitions, 956 flow [2024-06-14 12:46:20,862 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 12:46:20,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:20,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:20,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-14 12:46:20,862 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 12:46:20,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:20,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1615965538, now seen corresponding path program 5 times [2024-06-14 12:46:20,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:20,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036926334] [2024-06-14 12:46:20,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:20,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:20,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:22,125 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 12:46:22,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:22,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036926334] [2024-06-14 12:46:22,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036926334] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:22,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:22,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:46:22,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722098112] [2024-06-14 12:46:22,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:22,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:46:22,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:22,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:46:22,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:46:22,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:46:22,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 111 transitions, 956 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 12:46:22,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:22,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:46:22,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:22,478 INFO L124 PetriNetUnfolderBase]: 290/541 cut-off events. [2024-06-14 12:46:22,478 INFO L125 PetriNetUnfolderBase]: For 16904/16907 co-relation queries the response was YES. [2024-06-14 12:46:22,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3548 conditions, 541 events. 290/541 cut-off events. For 16904/16907 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2350 event pairs, 42 based on Foata normal form. 1/537 useless extension candidates. Maximal degree in co-relation 3486. Up to 421 conditions per place. [2024-06-14 12:46:22,482 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 90 selfloop transitions, 33 changer transitions 0/126 dead transitions. [2024-06-14 12:46:22,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 126 transitions, 1412 flow [2024-06-14 12:46:22,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:46:22,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:46:22,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-14 12:46:22,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993055555555556 [2024-06-14 12:46:22,483 INFO L175 Difference]: Start difference. First operand has 125 places, 111 transitions, 956 flow. Second operand 9 states and 115 transitions. [2024-06-14 12:46:22,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 126 transitions, 1412 flow [2024-06-14 12:46:22,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 126 transitions, 1333 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-14 12:46:22,503 INFO L231 Difference]: Finished difference. Result has 126 places, 115 transitions, 1052 flow [2024-06-14 12:46:22,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=877, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1052, PETRI_PLACES=126, PETRI_TRANSITIONS=115} [2024-06-14 12:46:22,504 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 95 predicate places. [2024-06-14 12:46:22,504 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 115 transitions, 1052 flow [2024-06-14 12:46:22,504 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 12:46:22,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:22,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:22,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-14 12:46:22,505 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 12:46:22,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:22,505 INFO L85 PathProgramCache]: Analyzing trace with hash 488853975, now seen corresponding path program 5 times [2024-06-14 12:46:22,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:22,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082949405] [2024-06-14 12:46:22,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:22,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:22,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:23,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:46:23,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:23,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082949405] [2024-06-14 12:46:23,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082949405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:23,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:23,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:46:23,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255888823] [2024-06-14 12:46:23,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:23,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:46:23,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:23,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:46:23,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:46:23,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:46:23,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 115 transitions, 1052 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 12:46:23,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:23,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:46:23,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:23,841 INFO L124 PetriNetUnfolderBase]: 326/599 cut-off events. [2024-06-14 12:46:23,841 INFO L125 PetriNetUnfolderBase]: For 22772/22775 co-relation queries the response was YES. [2024-06-14 12:46:23,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4193 conditions, 599 events. 326/599 cut-off events. For 22772/22775 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2652 event pairs, 44 based on Foata normal form. 2/596 useless extension candidates. Maximal degree in co-relation 4130. Up to 445 conditions per place. [2024-06-14 12:46:23,845 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 97 selfloop transitions, 38 changer transitions 0/138 dead transitions. [2024-06-14 12:46:23,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 138 transitions, 1645 flow [2024-06-14 12:46:23,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:46:23,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:46:23,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 121 transitions. [2024-06-14 12:46:23,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4201388888888889 [2024-06-14 12:46:23,856 INFO L175 Difference]: Start difference. First operand has 126 places, 115 transitions, 1052 flow. Second operand 9 states and 121 transitions. [2024-06-14 12:46:23,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 138 transitions, 1645 flow [2024-06-14 12:46:23,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 138 transitions, 1559 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-14 12:46:23,891 INFO L231 Difference]: Finished difference. Result has 131 places, 123 transitions, 1204 flow [2024-06-14 12:46:23,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=966, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1204, PETRI_PLACES=131, PETRI_TRANSITIONS=123} [2024-06-14 12:46:23,892 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 100 predicate places. [2024-06-14 12:46:23,892 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 123 transitions, 1204 flow [2024-06-14 12:46:23,893 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 12:46:23,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:23,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:23,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-14 12:46:23,893 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 12:46:23,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:23,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1962662732, now seen corresponding path program 6 times [2024-06-14 12:46:23,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:23,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072288982] [2024-06-14 12:46:23,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:23,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:23,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:25,336 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 12:46:25,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:25,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072288982] [2024-06-14 12:46:25,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072288982] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:25,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:25,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:46:25,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904538715] [2024-06-14 12:46:25,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:25,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:46:25,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:25,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:46:25,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:46:25,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:46:25,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 123 transitions, 1204 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 12:46:25,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:25,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:46:25,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:25,745 INFO L124 PetriNetUnfolderBase]: 324/596 cut-off events. [2024-06-14 12:46:25,745 INFO L125 PetriNetUnfolderBase]: For 22722/22725 co-relation queries the response was YES. [2024-06-14 12:46:25,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4276 conditions, 596 events. 324/596 cut-off events. For 22722/22725 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2643 event pairs, 44 based on Foata normal form. 1/592 useless extension candidates. Maximal degree in co-relation 4210. Up to 486 conditions per place. [2024-06-14 12:46:25,749 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 100 selfloop transitions, 29 changer transitions 0/132 dead transitions. [2024-06-14 12:46:25,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 132 transitions, 1484 flow [2024-06-14 12:46:25,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:46:25,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:46:25,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-14 12:46:25,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-14 12:46:25,758 INFO L175 Difference]: Start difference. First operand has 131 places, 123 transitions, 1204 flow. Second operand 9 states and 112 transitions. [2024-06-14 12:46:25,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 132 transitions, 1484 flow [2024-06-14 12:46:25,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 132 transitions, 1371 flow, removed 43 selfloop flow, removed 3 redundant places. [2024-06-14 12:46:25,796 INFO L231 Difference]: Finished difference. Result has 137 places, 123 transitions, 1154 flow [2024-06-14 12:46:25,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1091, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1154, PETRI_PLACES=137, PETRI_TRANSITIONS=123} [2024-06-14 12:46:25,797 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 106 predicate places. [2024-06-14 12:46:25,797 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 123 transitions, 1154 flow [2024-06-14 12:46:25,797 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 12:46:25,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:25,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:25,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-14 12:46:25,798 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 12:46:25,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:25,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1705952476, now seen corresponding path program 1 times [2024-06-14 12:46:25,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:25,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831508167] [2024-06-14 12:46:25,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:25,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:25,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:27,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:46:27,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:27,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831508167] [2024-06-14 12:46:27,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831508167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:27,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:27,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:46:27,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685821275] [2024-06-14 12:46:27,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:27,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:46:27,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:27,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:46:27,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:46:27,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:46:27,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 123 transitions, 1154 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 12:46:27,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:27,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:46:27,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:27,373 INFO L124 PetriNetUnfolderBase]: 327/601 cut-off events. [2024-06-14 12:46:27,373 INFO L125 PetriNetUnfolderBase]: For 23263/23266 co-relation queries the response was YES. [2024-06-14 12:46:27,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4288 conditions, 601 events. 327/601 cut-off events. For 23263/23266 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2668 event pairs, 38 based on Foata normal form. 3/600 useless extension candidates. Maximal degree in co-relation 4220. Up to 512 conditions per place. [2024-06-14 12:46:27,377 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 104 selfloop transitions, 28 changer transitions 0/135 dead transitions. [2024-06-14 12:46:27,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 135 transitions, 1482 flow [2024-06-14 12:46:27,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:46:27,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:46:27,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-14 12:46:27,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-06-14 12:46:27,378 INFO L175 Difference]: Start difference. First operand has 137 places, 123 transitions, 1154 flow. Second operand 9 states and 110 transitions. [2024-06-14 12:46:27,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 135 transitions, 1482 flow [2024-06-14 12:46:27,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 135 transitions, 1411 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-14 12:46:27,407 INFO L231 Difference]: Finished difference. Result has 138 places, 125 transitions, 1184 flow [2024-06-14 12:46:27,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1083, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1184, PETRI_PLACES=138, PETRI_TRANSITIONS=125} [2024-06-14 12:46:27,407 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 107 predicate places. [2024-06-14 12:46:27,408 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 125 transitions, 1184 flow [2024-06-14 12:46:27,408 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 12:46:27,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:27,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:27,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-14 12:46:27,408 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 12:46:27,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:27,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1705952755, now seen corresponding path program 6 times [2024-06-14 12:46:27,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:27,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143852064] [2024-06-14 12:46:27,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:27,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:27,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:28,344 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 12:46:28,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:28,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143852064] [2024-06-14 12:46:28,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143852064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:28,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:28,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:46:28,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108321280] [2024-06-14 12:46:28,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:28,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:46:28,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:28,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:46:28,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:46:28,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:46:28,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 125 transitions, 1184 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 12:46:28,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:28,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:46:28,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:28,653 INFO L124 PetriNetUnfolderBase]: 343/627 cut-off events. [2024-06-14 12:46:28,653 INFO L125 PetriNetUnfolderBase]: For 26708/26711 co-relation queries the response was YES. [2024-06-14 12:46:28,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4582 conditions, 627 events. 343/627 cut-off events. For 26708/26711 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2812 event pairs, 45 based on Foata normal form. 2/624 useless extension candidates. Maximal degree in co-relation 4513. Up to 348 conditions per place. [2024-06-14 12:46:28,658 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 80 selfloop transitions, 65 changer transitions 0/148 dead transitions. [2024-06-14 12:46:28,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 148 transitions, 1878 flow [2024-06-14 12:46:28,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:46:28,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:46:28,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 124 transitions. [2024-06-14 12:46:28,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4305555555555556 [2024-06-14 12:46:28,665 INFO L175 Difference]: Start difference. First operand has 138 places, 125 transitions, 1184 flow. Second operand 9 states and 124 transitions. [2024-06-14 12:46:28,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 148 transitions, 1878 flow [2024-06-14 12:46:28,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 148 transitions, 1793 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-14 12:46:28,711 INFO L231 Difference]: Finished difference. Result has 140 places, 131 transitions, 1347 flow [2024-06-14 12:46:28,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1099, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1347, PETRI_PLACES=140, PETRI_TRANSITIONS=131} [2024-06-14 12:46:28,712 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 109 predicate places. [2024-06-14 12:46:28,712 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 131 transitions, 1347 flow [2024-06-14 12:46:28,713 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 12:46:28,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:28,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:28,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-14 12:46:28,713 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 12:46:28,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:28,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1962453265, now seen corresponding path program 7 times [2024-06-14 12:46:28,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:28,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100757111] [2024-06-14 12:46:28,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:28,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:28,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:29,695 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 12:46:29,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:29,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100757111] [2024-06-14 12:46:29,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100757111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:29,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:29,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:46:29,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913337278] [2024-06-14 12:46:29,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:29,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:46:29,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:29,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:46:29,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:46:29,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:46:29,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 131 transitions, 1347 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 12:46:29,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:29,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:46:29,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:30,005 INFO L124 PetriNetUnfolderBase]: 339/621 cut-off events. [2024-06-14 12:46:30,006 INFO L125 PetriNetUnfolderBase]: For 27682/27685 co-relation queries the response was YES. [2024-06-14 12:46:30,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4622 conditions, 621 events. 339/621 cut-off events. For 27682/27685 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2769 event pairs, 45 based on Foata normal form. 2/618 useless extension candidates. Maximal degree in co-relation 4552. Up to 470 conditions per place. [2024-06-14 12:46:30,010 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 102 selfloop transitions, 39 changer transitions 0/144 dead transitions. [2024-06-14 12:46:30,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 144 transitions, 1746 flow [2024-06-14 12:46:30,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:46:30,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:46:30,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-14 12:46:30,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131944444444444 [2024-06-14 12:46:30,011 INFO L175 Difference]: Start difference. First operand has 140 places, 131 transitions, 1347 flow. Second operand 9 states and 119 transitions. [2024-06-14 12:46:30,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 144 transitions, 1746 flow [2024-06-14 12:46:30,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 144 transitions, 1549 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-14 12:46:30,044 INFO L231 Difference]: Finished difference. Result has 143 places, 131 transitions, 1234 flow [2024-06-14 12:46:30,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1150, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1234, PETRI_PLACES=143, PETRI_TRANSITIONS=131} [2024-06-14 12:46:30,045 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 112 predicate places. [2024-06-14 12:46:30,045 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 131 transitions, 1234 flow [2024-06-14 12:46:30,045 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 12:46:30,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:30,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:30,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-14 12:46:30,046 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 12:46:30,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:30,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1962662515, now seen corresponding path program 8 times [2024-06-14 12:46:30,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:30,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841123964] [2024-06-14 12:46:30,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:30,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:30,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:30,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:46:30,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:30,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841123964] [2024-06-14 12:46:30,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841123964] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:30,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:30,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:46:30,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023500703] [2024-06-14 12:46:30,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:30,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:46:30,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:30,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:46:30,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:46:30,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:46:30,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 131 transitions, 1234 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 12:46:30,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:30,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:46:30,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:31,209 INFO L124 PetriNetUnfolderBase]: 331/609 cut-off events. [2024-06-14 12:46:31,209 INFO L125 PetriNetUnfolderBase]: For 26343/26346 co-relation queries the response was YES. [2024-06-14 12:46:31,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4167 conditions, 609 events. 331/609 cut-off events. For 26343/26346 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2734 event pairs, 43 based on Foata normal form. 4/608 useless extension candidates. Maximal degree in co-relation 4097. Up to 490 conditions per place. [2024-06-14 12:46:31,213 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 108 selfloop transitions, 30 changer transitions 0/141 dead transitions. [2024-06-14 12:46:31,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 141 transitions, 1536 flow [2024-06-14 12:46:31,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:46:31,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:46:31,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-14 12:46:31,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-14 12:46:31,222 INFO L175 Difference]: Start difference. First operand has 143 places, 131 transitions, 1234 flow. Second operand 9 states and 114 transitions. [2024-06-14 12:46:31,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 141 transitions, 1536 flow [2024-06-14 12:46:31,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 141 transitions, 1396 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-14 12:46:31,263 INFO L231 Difference]: Finished difference. Result has 144 places, 131 transitions, 1160 flow [2024-06-14 12:46:31,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1094, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1160, PETRI_PLACES=144, PETRI_TRANSITIONS=131} [2024-06-14 12:46:31,272 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 113 predicate places. [2024-06-14 12:46:31,273 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 131 transitions, 1160 flow [2024-06-14 12:46:31,274 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 12:46:31,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:31,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:31,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-14 12:46:31,280 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 12:46:31,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:31,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1705960412, now seen corresponding path program 7 times [2024-06-14 12:46:31,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:31,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658949525] [2024-06-14 12:46:31,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:31,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:31,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:32,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:46:32,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:32,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658949525] [2024-06-14 12:46:32,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658949525] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:32,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:32,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:46:32,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534361519] [2024-06-14 12:46:32,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:32,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:46:32,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:32,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:46:32,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:46:32,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:46:32,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 131 transitions, 1160 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 12:46:32,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:32,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:46:32,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:33,004 INFO L124 PetriNetUnfolderBase]: 329/606 cut-off events. [2024-06-14 12:46:33,004 INFO L125 PetriNetUnfolderBase]: For 23574/23577 co-relation queries the response was YES. [2024-06-14 12:46:33,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3984 conditions, 606 events. 329/606 cut-off events. For 23574/23577 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2712 event pairs, 43 based on Foata normal form. 1/602 useless extension candidates. Maximal degree in co-relation 3914. Up to 444 conditions per place. [2024-06-14 12:46:33,008 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 89 selfloop transitions, 50 changer transitions 0/142 dead transitions. [2024-06-14 12:46:33,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 142 transitions, 1516 flow [2024-06-14 12:46:33,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:46:33,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:46:33,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-14 12:46:33,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923611111111111 [2024-06-14 12:46:33,017 INFO L175 Difference]: Start difference. First operand has 144 places, 131 transitions, 1160 flow. Second operand 9 states and 113 transitions. [2024-06-14 12:46:33,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 142 transitions, 1516 flow [2024-06-14 12:46:33,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 142 transitions, 1436 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-14 12:46:33,059 INFO L231 Difference]: Finished difference. Result has 144 places, 133 transitions, 1245 flow [2024-06-14 12:46:33,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1080, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1245, PETRI_PLACES=144, PETRI_TRANSITIONS=133} [2024-06-14 12:46:33,061 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 113 predicate places. [2024-06-14 12:46:33,061 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 133 transitions, 1245 flow [2024-06-14 12:46:33,061 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 12:46:33,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:33,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:33,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-14 12:46:33,062 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 12:46:33,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:33,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1705960195, now seen corresponding path program 9 times [2024-06-14 12:46:33,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:33,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83179637] [2024-06-14 12:46:33,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:33,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:33,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:34,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:46:34,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:34,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83179637] [2024-06-14 12:46:34,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83179637] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:34,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:34,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:46:34,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016366268] [2024-06-14 12:46:34,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:34,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:46:34,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:34,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:46:34,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:46:34,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:46:34,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 133 transitions, 1245 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 12:46:34,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:34,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:46:34,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:34,383 INFO L124 PetriNetUnfolderBase]: 325/600 cut-off events. [2024-06-14 12:46:34,384 INFO L125 PetriNetUnfolderBase]: For 23886/23889 co-relation queries the response was YES. [2024-06-14 12:46:34,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3939 conditions, 600 events. 325/600 cut-off events. For 23886/23889 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2680 event pairs, 42 based on Foata normal form. 2/597 useless extension candidates. Maximal degree in co-relation 3868. Up to 333 conditions per place. [2024-06-14 12:46:34,388 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 78 selfloop transitions, 68 changer transitions 0/149 dead transitions. [2024-06-14 12:46:34,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 149 transitions, 1781 flow [2024-06-14 12:46:34,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:46:34,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:46:34,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2024-06-14 12:46:34,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4236111111111111 [2024-06-14 12:46:34,389 INFO L175 Difference]: Start difference. First operand has 144 places, 133 transitions, 1245 flow. Second operand 9 states and 122 transitions. [2024-06-14 12:46:34,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 149 transitions, 1781 flow [2024-06-14 12:46:34,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 149 transitions, 1612 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-14 12:46:34,419 INFO L231 Difference]: Finished difference. Result has 147 places, 135 transitions, 1267 flow [2024-06-14 12:46:34,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1076, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1267, PETRI_PLACES=147, PETRI_TRANSITIONS=135} [2024-06-14 12:46:34,420 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 116 predicate places. [2024-06-14 12:46:34,420 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 135 transitions, 1267 flow [2024-06-14 12:46:34,420 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 12:46:34,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:34,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:34,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-14 12:46:34,420 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 12:46:34,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:34,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1696755985, now seen corresponding path program 10 times [2024-06-14 12:46:34,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:34,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828147984] [2024-06-14 12:46:34,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:34,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:34,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:35,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:46:35,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:35,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828147984] [2024-06-14 12:46:35,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828147984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:35,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:35,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:46:35,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525390424] [2024-06-14 12:46:35,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:35,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:46:35,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:35,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:46:35,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:46:35,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:46:35,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 135 transitions, 1267 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 12:46:35,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:35,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:46:35,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:35,719 INFO L124 PetriNetUnfolderBase]: 322/595 cut-off events. [2024-06-14 12:46:35,719 INFO L125 PetriNetUnfolderBase]: For 22774/22774 co-relation queries the response was YES. [2024-06-14 12:46:35,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3873 conditions, 595 events. 322/595 cut-off events. For 22774/22774 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2644 event pairs, 37 based on Foata normal form. 2/595 useless extension candidates. Maximal degree in co-relation 3800. Up to 529 conditions per place. [2024-06-14 12:46:35,723 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 127 selfloop transitions, 16 changer transitions 0/146 dead transitions. [2024-06-14 12:46:35,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 146 transitions, 1667 flow [2024-06-14 12:46:35,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:46:35,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:46:35,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-14 12:46:35,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3784722222222222 [2024-06-14 12:46:35,724 INFO L175 Difference]: Start difference. First operand has 147 places, 135 transitions, 1267 flow. Second operand 9 states and 109 transitions. [2024-06-14 12:46:35,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 146 transitions, 1667 flow [2024-06-14 12:46:35,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 146 transitions, 1526 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-14 12:46:35,761 INFO L231 Difference]: Finished difference. Result has 150 places, 135 transitions, 1164 flow [2024-06-14 12:46:35,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1126, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1164, PETRI_PLACES=150, PETRI_TRANSITIONS=135} [2024-06-14 12:46:35,761 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 119 predicate places. [2024-06-14 12:46:35,761 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 135 transitions, 1164 flow [2024-06-14 12:46:35,761 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 12:46:35,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:35,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:35,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-14 12:46:35,762 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 12:46:35,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:35,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1705693006, now seen corresponding path program 2 times [2024-06-14 12:46:35,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:35,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606862404] [2024-06-14 12:46:35,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:35,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:35,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:37,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:46:37,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:37,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606862404] [2024-06-14 12:46:37,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606862404] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:37,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:37,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:46:37,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366477144] [2024-06-14 12:46:37,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:37,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:46:37,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:37,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:46:37,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:46:37,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:46:37,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 135 transitions, 1164 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 12:46:37,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:37,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:46:37,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:37,537 INFO L124 PetriNetUnfolderBase]: 325/600 cut-off events. [2024-06-14 12:46:37,537 INFO L125 PetriNetUnfolderBase]: For 22589/22589 co-relation queries the response was YES. [2024-06-14 12:46:37,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3786 conditions, 600 events. 325/600 cut-off events. For 22589/22589 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2681 event pairs, 37 based on Foata normal form. 1/599 useless extension candidates. Maximal degree in co-relation 3712. Up to 549 conditions per place. [2024-06-14 12:46:37,542 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 129 selfloop transitions, 14 changer transitions 0/146 dead transitions. [2024-06-14 12:46:37,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 146 transitions, 1520 flow [2024-06-14 12:46:37,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:46:37,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:46:37,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-14 12:46:37,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-14 12:46:37,543 INFO L175 Difference]: Start difference. First operand has 150 places, 135 transitions, 1164 flow. Second operand 9 states and 105 transitions. [2024-06-14 12:46:37,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 146 transitions, 1520 flow [2024-06-14 12:46:37,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 146 transitions, 1460 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-14 12:46:37,583 INFO L231 Difference]: Finished difference. Result has 150 places, 137 transitions, 1189 flow [2024-06-14 12:46:37,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1109, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1189, PETRI_PLACES=150, PETRI_TRANSITIONS=137} [2024-06-14 12:46:37,584 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 119 predicate places. [2024-06-14 12:46:37,584 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 137 transitions, 1189 flow [2024-06-14 12:46:37,584 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 12:46:37,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:37,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:46:37,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-14 12:46:37,584 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 12:46:37,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:37,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1696429276, now seen corresponding path program 3 times [2024-06-14 12:46:37,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:37,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875764340] [2024-06-14 12:46:37,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:37,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:37,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:38,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:46:38,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:38,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875764340] [2024-06-14 12:46:38,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875764340] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:38,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:38,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:46:38,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597589547] [2024-06-14 12:46:38,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:38,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:46:38,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:38,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:46:38,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:46:38,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:46:38,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 137 transitions, 1189 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 12:46:38,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:38,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:46:38,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:39,259 INFO L124 PetriNetUnfolderBase]: 322/595 cut-off events. [2024-06-14 12:46:39,259 INFO L125 PetriNetUnfolderBase]: For 22450/22450 co-relation queries the response was YES. [2024-06-14 12:46:39,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3704 conditions, 595 events. 322/595 cut-off events. For 22450/22450 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2643 event pairs, 37 based on Foata normal form. 1/594 useless extension candidates. Maximal degree in co-relation 3629. Up to 538 conditions per place. [2024-06-14 12:46:39,263 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 126 selfloop transitions, 18 changer transitions 0/147 dead transitions. [2024-06-14 12:46:39,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 147 transitions, 1501 flow [2024-06-14 12:46:39,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:46:39,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:46:39,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-14 12:46:39,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-14 12:46:39,264 INFO L175 Difference]: Start difference. First operand has 150 places, 137 transitions, 1189 flow. Second operand 10 states and 116 transitions. [2024-06-14 12:46:39,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 147 transitions, 1501 flow [2024-06-14 12:46:39,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 147 transitions, 1414 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-14 12:46:39,299 INFO L231 Difference]: Finished difference. Result has 153 places, 137 transitions, 1143 flow [2024-06-14 12:46:39,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1102, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1143, PETRI_PLACES=153, PETRI_TRANSITIONS=137} [2024-06-14 12:46:39,299 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 122 predicate places. [2024-06-14 12:46:39,299 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 137 transitions, 1143 flow [2024-06-14 12:46:39,299 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 12:46:39,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:39,299 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 12:46:39,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-14 12:46:39,300 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 12:46:39,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:39,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1573505234, now seen corresponding path program 1 times [2024-06-14 12:46:39,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:39,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017051165] [2024-06-14 12:46:39,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:39,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:39,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:40,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:46:40,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:40,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017051165] [2024-06-14 12:46:40,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017051165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:40,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:40,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:46:40,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749654723] [2024-06-14 12:46:40,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:40,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:46:40,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:40,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:46:40,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:46:40,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:46:40,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 137 transitions, 1143 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 12:46:40,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:40,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:46:40,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:40,442 INFO L124 PetriNetUnfolderBase]: 326/603 cut-off events. [2024-06-14 12:46:40,442 INFO L125 PetriNetUnfolderBase]: For 24182/24182 co-relation queries the response was YES. [2024-06-14 12:46:40,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3721 conditions, 603 events. 326/603 cut-off events. For 24182/24182 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 2716 event pairs, 14 based on Foata normal form. 2/603 useless extension candidates. Maximal degree in co-relation 3645. Up to 499 conditions per place. [2024-06-14 12:46:40,446 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 136 selfloop transitions, 18 changer transitions 0/157 dead transitions. [2024-06-14 12:46:40,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 157 transitions, 1521 flow [2024-06-14 12:46:40,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:46:40,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:46:40,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-14 12:46:40,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923611111111111 [2024-06-14 12:46:40,447 INFO L175 Difference]: Start difference. First operand has 153 places, 137 transitions, 1143 flow. Second operand 9 states and 113 transitions. [2024-06-14 12:46:40,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 157 transitions, 1521 flow [2024-06-14 12:46:40,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 157 transitions, 1476 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-14 12:46:40,483 INFO L231 Difference]: Finished difference. Result has 153 places, 138 transitions, 1156 flow [2024-06-14 12:46:40,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1098, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1156, PETRI_PLACES=153, PETRI_TRANSITIONS=138} [2024-06-14 12:46:40,484 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 122 predicate places. [2024-06-14 12:46:40,484 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 138 transitions, 1156 flow [2024-06-14 12:46:40,484 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 12:46:40,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:40,484 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 12:46:40,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-14 12:46:40,485 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 12:46:40,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:40,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1576362194, now seen corresponding path program 2 times [2024-06-14 12:46:40,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:40,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182221434] [2024-06-14 12:46:40,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:40,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:40,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:41,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:46:41,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:41,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182221434] [2024-06-14 12:46:41,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182221434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:41,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:41,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:46:41,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008368627] [2024-06-14 12:46:41,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:41,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:46:41,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:41,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:46:41,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:46:41,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:46:41,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 138 transitions, 1156 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 12:46:41,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:41,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:46:41,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:41,672 INFO L124 PetriNetUnfolderBase]: 330/611 cut-off events. [2024-06-14 12:46:41,672 INFO L125 PetriNetUnfolderBase]: For 25338/25338 co-relation queries the response was YES. [2024-06-14 12:46:41,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3805 conditions, 611 events. 330/611 cut-off events. For 25338/25338 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 2769 event pairs, 31 based on Foata normal form. 2/611 useless extension candidates. Maximal degree in co-relation 3729. Up to 524 conditions per place. [2024-06-14 12:46:41,676 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 135 selfloop transitions, 19 changer transitions 0/157 dead transitions. [2024-06-14 12:46:41,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 157 transitions, 1534 flow [2024-06-14 12:46:41,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:46:41,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:46:41,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-14 12:46:41,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-14 12:46:41,677 INFO L175 Difference]: Start difference. First operand has 153 places, 138 transitions, 1156 flow. Second operand 9 states and 114 transitions. [2024-06-14 12:46:41,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 157 transitions, 1534 flow [2024-06-14 12:46:41,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 157 transitions, 1486 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-14 12:46:41,720 INFO L231 Difference]: Finished difference. Result has 155 places, 139 transitions, 1170 flow [2024-06-14 12:46:41,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1108, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1170, PETRI_PLACES=155, PETRI_TRANSITIONS=139} [2024-06-14 12:46:41,720 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 124 predicate places. [2024-06-14 12:46:41,720 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 139 transitions, 1170 flow [2024-06-14 12:46:41,721 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 12:46:41,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:41,721 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 12:46:41,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-14 12:46:41,721 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 12:46:41,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:41,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1297872862, now seen corresponding path program 1 times [2024-06-14 12:46:41,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:41,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756876189] [2024-06-14 12:46:41,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:41,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:41,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:42,733 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 12:46:42,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:42,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756876189] [2024-06-14 12:46:42,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756876189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:42,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:42,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:46:42,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683200641] [2024-06-14 12:46:42,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:42,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:46:42,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:42,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:46:42,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:46:42,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:46:42,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 139 transitions, 1170 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 12:46:42,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:42,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:46:42,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:43,141 INFO L124 PetriNetUnfolderBase]: 336/623 cut-off events. [2024-06-14 12:46:43,141 INFO L125 PetriNetUnfolderBase]: For 27260/27260 co-relation queries the response was YES. [2024-06-14 12:46:43,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3912 conditions, 623 events. 336/623 cut-off events. For 27260/27260 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 2839 event pairs, 32 based on Foata normal form. 2/623 useless extension candidates. Maximal degree in co-relation 3835. Up to 531 conditions per place. [2024-06-14 12:46:43,145 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 135 selfloop transitions, 22 changer transitions 0/160 dead transitions. [2024-06-14 12:46:43,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 160 transitions, 1588 flow [2024-06-14 12:46:43,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:46:43,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:46:43,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-14 12:46:43,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-14 12:46:43,146 INFO L175 Difference]: Start difference. First operand has 155 places, 139 transitions, 1170 flow. Second operand 10 states and 125 transitions. [2024-06-14 12:46:43,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 160 transitions, 1588 flow [2024-06-14 12:46:43,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 160 transitions, 1536 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-14 12:46:43,188 INFO L231 Difference]: Finished difference. Result has 158 places, 141 transitions, 1219 flow [2024-06-14 12:46:43,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1118, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1219, PETRI_PLACES=158, PETRI_TRANSITIONS=141} [2024-06-14 12:46:43,188 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 127 predicate places. [2024-06-14 12:46:43,188 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 141 transitions, 1219 flow [2024-06-14 12:46:43,189 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 12:46:43,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:43,189 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 12:46:43,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-14 12:46:43,189 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 12:46:43,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:43,189 INFO L85 PathProgramCache]: Analyzing trace with hash -849085760, now seen corresponding path program 3 times [2024-06-14 12:46:43,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:43,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743617242] [2024-06-14 12:46:43,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:43,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:43,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:43,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:46:44,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:44,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743617242] [2024-06-14 12:46:44,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743617242] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:44,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:44,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:46:44,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081139087] [2024-06-14 12:46:44,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:44,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:46:44,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:44,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:46:44,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:46:44,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:46:44,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 141 transitions, 1219 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 12:46:44,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:44,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:46:44,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:44,405 INFO L124 PetriNetUnfolderBase]: 340/631 cut-off events. [2024-06-14 12:46:44,406 INFO L125 PetriNetUnfolderBase]: For 28380/28380 co-relation queries the response was YES. [2024-06-14 12:46:44,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3988 conditions, 631 events. 340/631 cut-off events. For 28380/28380 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 2906 event pairs, 32 based on Foata normal form. 2/631 useless extension candidates. Maximal degree in co-relation 3910. Up to 544 conditions per place. [2024-06-14 12:46:44,410 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 135 selfloop transitions, 22 changer transitions 0/160 dead transitions. [2024-06-14 12:46:44,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 160 transitions, 1621 flow [2024-06-14 12:46:44,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:46:44,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:46:44,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-14 12:46:44,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-14 12:46:44,411 INFO L175 Difference]: Start difference. First operand has 158 places, 141 transitions, 1219 flow. Second operand 9 states and 111 transitions. [2024-06-14 12:46:44,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 160 transitions, 1621 flow [2024-06-14 12:46:44,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 160 transitions, 1536 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-14 12:46:44,452 INFO L231 Difference]: Finished difference. Result has 160 places, 145 transitions, 1239 flow [2024-06-14 12:46:44,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1134, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1239, PETRI_PLACES=160, PETRI_TRANSITIONS=145} [2024-06-14 12:46:44,453 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 129 predicate places. [2024-06-14 12:46:44,453 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 145 transitions, 1239 flow [2024-06-14 12:46:44,453 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 12:46:44,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:44,453 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 12:46:44,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-14 12:46:44,454 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 12:46:44,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:44,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1691837814, now seen corresponding path program 2 times [2024-06-14 12:46:44,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:44,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413332883] [2024-06-14 12:46:44,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:44,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:44,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:45,536 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 12:46:45,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:45,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413332883] [2024-06-14 12:46:45,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413332883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:45,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:45,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:46:45,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629147689] [2024-06-14 12:46:45,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:45,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:46:45,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:45,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:46:45,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:46:45,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:46:45,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 145 transitions, 1239 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 12:46:45,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:45,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:46:45,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:46,000 INFO L124 PetriNetUnfolderBase]: 356/659 cut-off events. [2024-06-14 12:46:46,000 INFO L125 PetriNetUnfolderBase]: For 32851/32851 co-relation queries the response was YES. [2024-06-14 12:46:46,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4319 conditions, 659 events. 356/659 cut-off events. For 32851/32851 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3061 event pairs, 30 based on Foata normal form. 2/659 useless extension candidates. Maximal degree in co-relation 4239. Up to 536 conditions per place. [2024-06-14 12:46:46,004 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 132 selfloop transitions, 32 changer transitions 0/167 dead transitions. [2024-06-14 12:46:46,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 167 transitions, 1823 flow [2024-06-14 12:46:46,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:46:46,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:46:46,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-14 12:46:46,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-14 12:46:46,006 INFO L175 Difference]: Start difference. First operand has 160 places, 145 transitions, 1239 flow. Second operand 10 states and 127 transitions. [2024-06-14 12:46:46,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 167 transitions, 1823 flow [2024-06-14 12:46:46,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 167 transitions, 1764 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-14 12:46:46,051 INFO L231 Difference]: Finished difference. Result has 164 places, 150 transitions, 1364 flow [2024-06-14 12:46:46,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1180, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1364, PETRI_PLACES=164, PETRI_TRANSITIONS=150} [2024-06-14 12:46:46,052 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 133 predicate places. [2024-06-14 12:46:46,052 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 150 transitions, 1364 flow [2024-06-14 12:46:46,052 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 12:46:46,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:46,052 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 12:46:46,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-14 12:46:46,053 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 12:46:46,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:46,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1691831304, now seen corresponding path program 3 times [2024-06-14 12:46:46,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:46,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131563138] [2024-06-14 12:46:46,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:46,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:46,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:47,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:46:47,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:47,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131563138] [2024-06-14 12:46:47,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131563138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:47,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:47,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:46:47,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268794548] [2024-06-14 12:46:47,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:47,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:46:47,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:47,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:46:47,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:46:47,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:46:47,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 150 transitions, 1364 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 12:46:47,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:47,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:46:47,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:47,864 INFO L124 PetriNetUnfolderBase]: 354/656 cut-off events. [2024-06-14 12:46:47,864 INFO L125 PetriNetUnfolderBase]: For 31453/31453 co-relation queries the response was YES. [2024-06-14 12:46:47,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4333 conditions, 656 events. 354/656 cut-off events. For 31453/31453 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3042 event pairs, 30 based on Foata normal form. 1/655 useless extension candidates. Maximal degree in co-relation 4252. Up to 535 conditions per place. [2024-06-14 12:46:47,867 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 132 selfloop transitions, 34 changer transitions 0/169 dead transitions. [2024-06-14 12:46:47,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 169 transitions, 1892 flow [2024-06-14 12:46:47,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:46:47,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:46:47,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-14 12:46:47,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-14 12:46:47,868 INFO L175 Difference]: Start difference. First operand has 164 places, 150 transitions, 1364 flow. Second operand 10 states and 128 transitions. [2024-06-14 12:46:47,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 169 transitions, 1892 flow [2024-06-14 12:46:47,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 169 transitions, 1795 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-14 12:46:47,918 INFO L231 Difference]: Finished difference. Result has 168 places, 152 transitions, 1386 flow [2024-06-14 12:46:47,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1273, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1386, PETRI_PLACES=168, PETRI_TRANSITIONS=152} [2024-06-14 12:46:47,919 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 137 predicate places. [2024-06-14 12:46:47,919 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 152 transitions, 1386 flow [2024-06-14 12:46:47,919 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 12:46:47,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:47,920 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 12:46:47,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-14 12:46:47,920 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 12:46:47,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:47,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1857292498, now seen corresponding path program 4 times [2024-06-14 12:46:47,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:47,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807551346] [2024-06-14 12:46:47,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:47,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:47,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:48,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:46:48,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:48,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807551346] [2024-06-14 12:46:48,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807551346] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:48,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:48,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:46:48,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523555744] [2024-06-14 12:46:48,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:48,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:46:48,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:48,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:46:48,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:46:48,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:46:48,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 152 transitions, 1386 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 12:46:48,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:48,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:46:48,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:49,122 INFO L124 PetriNetUnfolderBase]: 358/664 cut-off events. [2024-06-14 12:46:49,122 INFO L125 PetriNetUnfolderBase]: For 33224/33224 co-relation queries the response was YES. [2024-06-14 12:46:49,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4413 conditions, 664 events. 358/664 cut-off events. For 33224/33224 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3084 event pairs, 32 based on Foata normal form. 2/664 useless extension candidates. Maximal degree in co-relation 4330. Up to 566 conditions per place. [2024-06-14 12:46:49,126 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 138 selfloop transitions, 25 changer transitions 0/166 dead transitions. [2024-06-14 12:46:49,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 166 transitions, 1773 flow [2024-06-14 12:46:49,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:46:49,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:46:49,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-14 12:46:49,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-14 12:46:49,129 INFO L175 Difference]: Start difference. First operand has 168 places, 152 transitions, 1386 flow. Second operand 9 states and 111 transitions. [2024-06-14 12:46:49,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 166 transitions, 1773 flow [2024-06-14 12:46:49,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 166 transitions, 1689 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-14 12:46:49,186 INFO L231 Difference]: Finished difference. Result has 170 places, 154 transitions, 1389 flow [2024-06-14 12:46:49,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1302, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1389, PETRI_PLACES=170, PETRI_TRANSITIONS=154} [2024-06-14 12:46:49,186 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 139 predicate places. [2024-06-14 12:46:49,186 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 154 transitions, 1389 flow [2024-06-14 12:46:49,187 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 12:46:49,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:49,187 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 12:46:49,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-14 12:46:49,187 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 12:46:49,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:49,188 INFO L85 PathProgramCache]: Analyzing trace with hash -290716980, now seen corresponding path program 4 times [2024-06-14 12:46:49,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:49,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382817237] [2024-06-14 12:46:49,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:49,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:49,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:50,592 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 12:46:50,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:50,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382817237] [2024-06-14 12:46:50,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382817237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:50,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:50,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:46:50,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425721066] [2024-06-14 12:46:50,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:50,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:46:50,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:50,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:46:50,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:46:50,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:46:50,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 154 transitions, 1389 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 12:46:50,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:50,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:46:50,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:51,139 INFO L124 PetriNetUnfolderBase]: 366/679 cut-off events. [2024-06-14 12:46:51,139 INFO L125 PetriNetUnfolderBase]: For 34966/34966 co-relation queries the response was YES. [2024-06-14 12:46:51,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4583 conditions, 679 events. 366/679 cut-off events. For 34966/34966 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3199 event pairs, 31 based on Foata normal form. 1/678 useless extension candidates. Maximal degree in co-relation 4499. Up to 563 conditions per place. [2024-06-14 12:46:51,144 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 137 selfloop transitions, 34 changer transitions 0/174 dead transitions. [2024-06-14 12:46:51,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 174 transitions, 1981 flow [2024-06-14 12:46:51,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:46:51,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:46:51,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-14 12:46:51,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-14 12:46:51,145 INFO L175 Difference]: Start difference. First operand has 170 places, 154 transitions, 1389 flow. Second operand 10 states and 126 transitions. [2024-06-14 12:46:51,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 174 transitions, 1981 flow [2024-06-14 12:46:51,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 174 transitions, 1890 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-14 12:46:51,199 INFO L231 Difference]: Finished difference. Result has 173 places, 161 transitions, 1498 flow [2024-06-14 12:46:51,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1298, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1498, PETRI_PLACES=173, PETRI_TRANSITIONS=161} [2024-06-14 12:46:51,199 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 142 predicate places. [2024-06-14 12:46:51,199 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 161 transitions, 1498 flow [2024-06-14 12:46:51,200 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 12:46:51,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:51,200 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 12:46:51,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-14 12:46:51,200 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 12:46:51,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:51,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1857476948, now seen corresponding path program 5 times [2024-06-14 12:46:51,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:51,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223064497] [2024-06-14 12:46:51,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:51,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:51,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:52,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:46:52,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:52,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223064497] [2024-06-14 12:46:52,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223064497] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:52,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:52,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:46:52,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558561851] [2024-06-14 12:46:52,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:52,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:46:52,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:52,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:46:52,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:46:52,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:46:52,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 161 transitions, 1498 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 12:46:52,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:52,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:46:52,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:52,844 INFO L124 PetriNetUnfolderBase]: 372/691 cut-off events. [2024-06-14 12:46:52,844 INFO L125 PetriNetUnfolderBase]: For 38330/38330 co-relation queries the response was YES. [2024-06-14 12:46:52,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4767 conditions, 691 events. 372/691 cut-off events. For 38330/38330 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3255 event pairs, 32 based on Foata normal form. 2/691 useless extension candidates. Maximal degree in co-relation 4682. Up to 559 conditions per place. [2024-06-14 12:46:52,849 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 136 selfloop transitions, 39 changer transitions 0/178 dead transitions. [2024-06-14 12:46:52,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 178 transitions, 2104 flow [2024-06-14 12:46:52,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:46:52,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:46:52,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-14 12:46:52,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-14 12:46:52,850 INFO L175 Difference]: Start difference. First operand has 173 places, 161 transitions, 1498 flow. Second operand 10 states and 127 transitions. [2024-06-14 12:46:52,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 178 transitions, 2104 flow [2024-06-14 12:46:52,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 178 transitions, 1985 flow, removed 44 selfloop flow, removed 5 redundant places. [2024-06-14 12:46:52,918 INFO L231 Difference]: Finished difference. Result has 178 places, 165 transitions, 1585 flow [2024-06-14 12:46:52,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1379, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1585, PETRI_PLACES=178, PETRI_TRANSITIONS=165} [2024-06-14 12:46:52,919 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 147 predicate places. [2024-06-14 12:46:52,919 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 165 transitions, 1585 flow [2024-06-14 12:46:52,919 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 12:46:52,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:52,919 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 12:46:52,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-14 12:46:52,919 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 12:46:52,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:52,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1863726548, now seen corresponding path program 6 times [2024-06-14 12:46:52,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:52,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067053055] [2024-06-14 12:46:52,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:52,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:52,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:54,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:46:54,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:54,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067053055] [2024-06-14 12:46:54,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067053055] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:54,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:54,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:46:54,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681462820] [2024-06-14 12:46:54,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:54,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:46:54,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:54,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:46:54,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:46:54,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:46:54,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 165 transitions, 1585 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 12:46:54,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:54,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:46:54,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:54,677 INFO L124 PetriNetUnfolderBase]: 390/728 cut-off events. [2024-06-14 12:46:54,677 INFO L125 PetriNetUnfolderBase]: For 44246/44246 co-relation queries the response was YES. [2024-06-14 12:46:54,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5322 conditions, 728 events. 390/728 cut-off events. For 44246/44246 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3517 event pairs, 34 based on Foata normal form. 1/727 useless extension candidates. Maximal degree in co-relation 5235. Up to 497 conditions per place. [2024-06-14 12:46:54,683 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 127 selfloop transitions, 60 changer transitions 0/190 dead transitions. [2024-06-14 12:46:54,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 190 transitions, 2538 flow [2024-06-14 12:46:54,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:46:54,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:46:54,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-14 12:46:54,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-14 12:46:54,683 INFO L175 Difference]: Start difference. First operand has 178 places, 165 transitions, 1585 flow. Second operand 10 states and 133 transitions. [2024-06-14 12:46:54,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 190 transitions, 2538 flow [2024-06-14 12:46:54,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 190 transitions, 2437 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-14 12:46:54,759 INFO L231 Difference]: Finished difference. Result has 183 places, 172 transitions, 1811 flow [2024-06-14 12:46:54,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1484, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1811, PETRI_PLACES=183, PETRI_TRANSITIONS=172} [2024-06-14 12:46:54,759 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 152 predicate places. [2024-06-14 12:46:54,759 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 172 transitions, 1811 flow [2024-06-14 12:46:54,759 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 12:46:54,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:54,759 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 12:46:54,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-14 12:46:54,760 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 12:46:54,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:54,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1863733058, now seen corresponding path program 7 times [2024-06-14 12:46:54,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:54,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555029567] [2024-06-14 12:46:54,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:54,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:54,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:56,167 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 12:46:56,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:56,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555029567] [2024-06-14 12:46:56,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555029567] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:56,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:56,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:46:56,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408868895] [2024-06-14 12:46:56,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:56,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:46:56,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:56,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:46:56,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:46:56,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:46:56,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 172 transitions, 1811 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 12:46:56,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:56,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:46:56,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:56,631 INFO L124 PetriNetUnfolderBase]: 401/750 cut-off events. [2024-06-14 12:46:56,632 INFO L125 PetriNetUnfolderBase]: For 50316/50316 co-relation queries the response was YES. [2024-06-14 12:46:56,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5826 conditions, 750 events. 401/750 cut-off events. For 50316/50316 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3663 event pairs, 35 based on Foata normal form. 2/750 useless extension candidates. Maximal degree in co-relation 5736. Up to 509 conditions per place. [2024-06-14 12:46:56,637 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 131 selfloop transitions, 62 changer transitions 0/196 dead transitions. [2024-06-14 12:46:56,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 196 transitions, 2765 flow [2024-06-14 12:46:56,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:46:56,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:46:56,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-14 12:46:56,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-06-14 12:46:56,639 INFO L175 Difference]: Start difference. First operand has 183 places, 172 transitions, 1811 flow. Second operand 10 states and 134 transitions. [2024-06-14 12:46:56,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 196 transitions, 2765 flow [2024-06-14 12:46:56,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 196 transitions, 2533 flow, removed 65 selfloop flow, removed 7 redundant places. [2024-06-14 12:46:56,724 INFO L231 Difference]: Finished difference. Result has 186 places, 177 transitions, 1858 flow [2024-06-14 12:46:56,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1615, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1858, PETRI_PLACES=186, PETRI_TRANSITIONS=177} [2024-06-14 12:46:56,724 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 155 predicate places. [2024-06-14 12:46:56,724 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 177 transitions, 1858 flow [2024-06-14 12:46:56,724 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 12:46:56,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:56,724 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 12:46:56,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-14 12:46:56,725 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 12:46:56,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:56,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1863972626, now seen corresponding path program 1 times [2024-06-14 12:46:56,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:56,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076737286] [2024-06-14 12:46:56,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:56,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:56,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:57,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:46:57,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:57,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076737286] [2024-06-14 12:46:57,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076737286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:57,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:57,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:46:57,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613849705] [2024-06-14 12:46:57,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:57,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:46:57,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:57,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:46:57,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:46:57,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:46:57,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 177 transitions, 1858 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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 12:46:57,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:57,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:46:57,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:46:58,212 INFO L124 PetriNetUnfolderBase]: 405/758 cut-off events. [2024-06-14 12:46:58,212 INFO L125 PetriNetUnfolderBase]: For 49996/49996 co-relation queries the response was YES. [2024-06-14 12:46:58,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5720 conditions, 758 events. 405/758 cut-off events. For 49996/49996 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3738 event pairs, 33 based on Foata normal form. 2/758 useless extension candidates. Maximal degree in co-relation 5630. Up to 671 conditions per place. [2024-06-14 12:46:58,218 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 173 selfloop transitions, 16 changer transitions 0/192 dead transitions. [2024-06-14 12:46:58,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 192 transitions, 2305 flow [2024-06-14 12:46:58,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:46:58,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:46:58,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-14 12:46:58,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3784722222222222 [2024-06-14 12:46:58,219 INFO L175 Difference]: Start difference. First operand has 186 places, 177 transitions, 1858 flow. Second operand 9 states and 109 transitions. [2024-06-14 12:46:58,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 192 transitions, 2305 flow [2024-06-14 12:46:58,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 192 transitions, 2158 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-14 12:46:58,308 INFO L231 Difference]: Finished difference. Result has 189 places, 178 transitions, 1775 flow [2024-06-14 12:46:58,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1711, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1775, PETRI_PLACES=189, PETRI_TRANSITIONS=178} [2024-06-14 12:46:58,308 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 158 predicate places. [2024-06-14 12:46:58,308 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 178 transitions, 1775 flow [2024-06-14 12:46:58,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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 12:46:58,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:46:58,308 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 12:46:58,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-14 12:46:58,309 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 12:46:58,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:46:58,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1863963698, now seen corresponding path program 8 times [2024-06-14 12:46:58,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:46:58,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631531695] [2024-06-14 12:46:58,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:46:58,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:46:58,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:46:59,579 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 12:46:59,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:46:59,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631531695] [2024-06-14 12:46:59,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631531695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:46:59,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:46:59,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:46:59,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126672952] [2024-06-14 12:46:59,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:46:59,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:46:59,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:46:59,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:46:59,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:46:59,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:46:59,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 178 transitions, 1775 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 12:46:59,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:46:59,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:46:59,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:00,088 INFO L124 PetriNetUnfolderBase]: 401/752 cut-off events. [2024-06-14 12:47:00,089 INFO L125 PetriNetUnfolderBase]: For 47388/47388 co-relation queries the response was YES. [2024-06-14 12:47:00,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5409 conditions, 752 events. 401/752 cut-off events. For 47388/47388 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3707 event pairs, 34 based on Foata normal form. 2/752 useless extension candidates. Maximal degree in co-relation 5318. Up to 514 conditions per place. [2024-06-14 12:47:00,097 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 126 selfloop transitions, 66 changer transitions 0/195 dead transitions. [2024-06-14 12:47:00,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 195 transitions, 2460 flow [2024-06-14 12:47:00,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:47:00,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:47:00,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-14 12:47:00,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-14 12:47:00,099 INFO L175 Difference]: Start difference. First operand has 189 places, 178 transitions, 1775 flow. Second operand 10 states and 131 transitions. [2024-06-14 12:47:00,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 195 transitions, 2460 flow [2024-06-14 12:47:00,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 195 transitions, 2364 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-14 12:47:00,185 INFO L231 Difference]: Finished difference. Result has 192 places, 178 transitions, 1817 flow [2024-06-14 12:47:00,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1679, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1817, PETRI_PLACES=192, PETRI_TRANSITIONS=178} [2024-06-14 12:47:00,185 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 161 predicate places. [2024-06-14 12:47:00,185 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 178 transitions, 1817 flow [2024-06-14 12:47:00,185 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 12:47:00,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:00,185 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 12:47:00,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-14 12:47:00,186 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 12:47:00,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:00,186 INFO L85 PathProgramCache]: Analyzing trace with hash -713178926, now seen corresponding path program 5 times [2024-06-14 12:47:00,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:00,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605903927] [2024-06-14 12:47:00,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:00,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:00,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:01,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:01,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:01,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605903927] [2024-06-14 12:47:01,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605903927] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:01,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:01,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:47:01,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408439647] [2024-06-14 12:47:01,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:01,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:47:01,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:01,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:47:01,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:47:01,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:47:01,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 178 transitions, 1817 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 12:47:01,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:01,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:47:01,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:01,402 INFO L124 PetriNetUnfolderBase]: 398/748 cut-off events. [2024-06-14 12:47:01,402 INFO L125 PetriNetUnfolderBase]: For 44935/44938 co-relation queries the response was YES. [2024-06-14 12:47:01,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5304 conditions, 748 events. 398/748 cut-off events. For 44935/44938 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3694 event pairs, 39 based on Foata normal form. 2/745 useless extension candidates. Maximal degree in co-relation 5212. Up to 621 conditions per place. [2024-06-14 12:47:01,408 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 156 selfloop transitions, 30 changer transitions 0/189 dead transitions. [2024-06-14 12:47:01,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 189 transitions, 2221 flow [2024-06-14 12:47:01,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:47:01,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:47:01,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-14 12:47:01,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-06-14 12:47:01,410 INFO L175 Difference]: Start difference. First operand has 192 places, 178 transitions, 1817 flow. Second operand 9 states and 110 transitions. [2024-06-14 12:47:01,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 189 transitions, 2221 flow [2024-06-14 12:47:01,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 189 transitions, 2072 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-14 12:47:01,498 INFO L231 Difference]: Finished difference. Result has 192 places, 179 transitions, 1740 flow [2024-06-14 12:47:01,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1668, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1740, PETRI_PLACES=192, PETRI_TRANSITIONS=179} [2024-06-14 12:47:01,499 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 161 predicate places. [2024-06-14 12:47:01,499 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 179 transitions, 1740 flow [2024-06-14 12:47:01,499 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 12:47:01,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:01,499 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 12:47:01,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-14 12:47:01,499 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 12:47:01,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:01,500 INFO L85 PathProgramCache]: Analyzing trace with hash -706738366, now seen corresponding path program 9 times [2024-06-14 12:47:01,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:01,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086445272] [2024-06-14 12:47:01,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:01,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:01,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:02,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:02,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:02,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086445272] [2024-06-14 12:47:02,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086445272] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:02,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:02,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:47:02,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788075683] [2024-06-14 12:47:02,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:02,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:47:02,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:02,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:47:02,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:47:02,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:47:02,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 179 transitions, 1740 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 12:47:02,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:02,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:47:02,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:03,325 INFO L124 PetriNetUnfolderBase]: 416/783 cut-off events. [2024-06-14 12:47:03,325 INFO L125 PetriNetUnfolderBase]: For 51089/51092 co-relation queries the response was YES. [2024-06-14 12:47:03,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5725 conditions, 783 events. 416/783 cut-off events. For 51089/51092 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 3919 event pairs, 36 based on Foata normal form. 1/779 useless extension candidates. Maximal degree in co-relation 5632. Up to 606 conditions per place. [2024-06-14 12:47:03,335 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 157 selfloop transitions, 45 changer transitions 0/205 dead transitions. [2024-06-14 12:47:03,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 205 transitions, 2771 flow [2024-06-14 12:47:03,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:47:03,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:47:03,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-14 12:47:03,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-14 12:47:03,338 INFO L175 Difference]: Start difference. First operand has 192 places, 179 transitions, 1740 flow. Second operand 10 states and 131 transitions. [2024-06-14 12:47:03,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 205 transitions, 2771 flow [2024-06-14 12:47:03,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 205 transitions, 2661 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-14 12:47:03,440 INFO L231 Difference]: Finished difference. Result has 196 places, 190 transitions, 1977 flow [2024-06-14 12:47:03,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1630, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1977, PETRI_PLACES=196, PETRI_TRANSITIONS=190} [2024-06-14 12:47:03,441 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 165 predicate places. [2024-06-14 12:47:03,441 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 190 transitions, 1977 flow [2024-06-14 12:47:03,441 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 12:47:03,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:03,441 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 12:47:03,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-14 12:47:03,441 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 12:47:03,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:03,441 INFO L85 PathProgramCache]: Analyzing trace with hash -706744876, now seen corresponding path program 10 times [2024-06-14 12:47:03,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:03,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647221621] [2024-06-14 12:47:03,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:03,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:03,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:04,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:04,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:04,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647221621] [2024-06-14 12:47:04,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647221621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:04,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:04,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:47:04,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580526847] [2024-06-14 12:47:04,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:04,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:47:04,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:04,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:47:04,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:47:04,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:47:04,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 190 transitions, 1977 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 12:47:04,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:04,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:47:04,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:05,315 INFO L124 PetriNetUnfolderBase]: 429/806 cut-off events. [2024-06-14 12:47:05,315 INFO L125 PetriNetUnfolderBase]: For 57646/57649 co-relation queries the response was YES. [2024-06-14 12:47:05,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6193 conditions, 806 events. 429/806 cut-off events. For 57646/57649 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4057 event pairs, 42 based on Foata normal form. 1/802 useless extension candidates. Maximal degree in co-relation 6097. Up to 589 conditions per place. [2024-06-14 12:47:05,321 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 151 selfloop transitions, 57 changer transitions 0/211 dead transitions. [2024-06-14 12:47:05,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 211 transitions, 2996 flow [2024-06-14 12:47:05,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:47:05,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:47:05,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-14 12:47:05,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-06-14 12:47:05,323 INFO L175 Difference]: Start difference. First operand has 196 places, 190 transitions, 1977 flow. Second operand 10 states and 134 transitions. [2024-06-14 12:47:05,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 211 transitions, 2996 flow [2024-06-14 12:47:05,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 211 transitions, 2821 flow, removed 70 selfloop flow, removed 4 redundant places. [2024-06-14 12:47:05,438 INFO L231 Difference]: Finished difference. Result has 203 places, 198 transitions, 2148 flow [2024-06-14 12:47:05,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1820, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2148, PETRI_PLACES=203, PETRI_TRANSITIONS=198} [2024-06-14 12:47:05,438 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 172 predicate places. [2024-06-14 12:47:05,439 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 198 transitions, 2148 flow [2024-06-14 12:47:05,439 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 12:47:05,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:05,439 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 12:47:05,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-14 12:47:05,439 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 12:47:05,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:05,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1059826638, now seen corresponding path program 11 times [2024-06-14 12:47:05,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:05,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8086120] [2024-06-14 12:47:05,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:05,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:05,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:06,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:06,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:06,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8086120] [2024-06-14 12:47:06,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8086120] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:06,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:06,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:47:06,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186057071] [2024-06-14 12:47:06,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:06,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:47:06,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:06,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:47:06,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:47:06,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:47:06,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 198 transitions, 2148 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 12:47:06,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:06,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:47:06,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:07,213 INFO L124 PetriNetUnfolderBase]: 440/827 cut-off events. [2024-06-14 12:47:07,214 INFO L125 PetriNetUnfolderBase]: For 63601/63601 co-relation queries the response was YES. [2024-06-14 12:47:07,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6526 conditions, 827 events. 440/827 cut-off events. For 63601/63601 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4198 event pairs, 39 based on Foata normal form. 2/827 useless extension candidates. Maximal degree in co-relation 6427. Up to 718 conditions per place. [2024-06-14 12:47:07,222 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 189 selfloop transitions, 23 changer transitions 0/215 dead transitions. [2024-06-14 12:47:07,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 215 transitions, 2878 flow [2024-06-14 12:47:07,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:47:07,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:47:07,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-14 12:47:07,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-14 12:47:07,224 INFO L175 Difference]: Start difference. First operand has 203 places, 198 transitions, 2148 flow. Second operand 10 states and 121 transitions. [2024-06-14 12:47:07,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 215 transitions, 2878 flow [2024-06-14 12:47:07,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 215 transitions, 2807 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-14 12:47:07,354 INFO L231 Difference]: Finished difference. Result has 209 places, 203 transitions, 2275 flow [2024-06-14 12:47:07,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2081, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2275, PETRI_PLACES=209, PETRI_TRANSITIONS=203} [2024-06-14 12:47:07,355 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 178 predicate places. [2024-06-14 12:47:07,355 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 203 transitions, 2275 flow [2024-06-14 12:47:07,355 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 12:47:07,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:07,355 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 12:47:07,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-14 12:47:07,356 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 12:47:07,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:07,356 INFO L85 PathProgramCache]: Analyzing trace with hash -706498798, now seen corresponding path program 2 times [2024-06-14 12:47:07,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:07,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629781925] [2024-06-14 12:47:07,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:07,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:07,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:08,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:08,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:08,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629781925] [2024-06-14 12:47:08,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629781925] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:08,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:08,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:47:08,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286021088] [2024-06-14 12:47:08,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:08,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:47:08,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:08,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:47:08,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:47:08,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:47:08,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 203 transitions, 2275 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 12:47:08,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:08,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:47:08,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:09,038 INFO L124 PetriNetUnfolderBase]: 444/836 cut-off events. [2024-06-14 12:47:09,038 INFO L125 PetriNetUnfolderBase]: For 65257/65260 co-relation queries the response was YES. [2024-06-14 12:47:09,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6652 conditions, 836 events. 444/836 cut-off events. For 65257/65260 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4261 event pairs, 38 based on Foata normal form. 4/836 useless extension candidates. Maximal degree in co-relation 6551. Up to 730 conditions per place. [2024-06-14 12:47:09,048 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 193 selfloop transitions, 19 changer transitions 0/215 dead transitions. [2024-06-14 12:47:09,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 215 transitions, 2757 flow [2024-06-14 12:47:09,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:47:09,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:47:09,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-14 12:47:09,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 12:47:09,049 INFO L175 Difference]: Start difference. First operand has 209 places, 203 transitions, 2275 flow. Second operand 9 states and 108 transitions. [2024-06-14 12:47:09,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 215 transitions, 2757 flow [2024-06-14 12:47:09,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 215 transitions, 2653 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-14 12:47:09,187 INFO L231 Difference]: Finished difference. Result has 212 places, 204 transitions, 2243 flow [2024-06-14 12:47:09,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2171, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2243, PETRI_PLACES=212, PETRI_TRANSITIONS=204} [2024-06-14 12:47:09,187 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 181 predicate places. [2024-06-14 12:47:09,188 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 204 transitions, 2243 flow [2024-06-14 12:47:09,188 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 12:47:09,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:09,188 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 12:47:09,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-14 12:47:09,188 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 12:47:09,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:09,188 INFO L85 PathProgramCache]: Analyzing trace with hash -712994476, now seen corresponding path program 12 times [2024-06-14 12:47:09,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:09,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530908066] [2024-06-14 12:47:09,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:09,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:09,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:10,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:10,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:10,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530908066] [2024-06-14 12:47:10,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530908066] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:10,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:10,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:47:10,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972480743] [2024-06-14 12:47:10,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:10,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:47:10,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:10,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:47:10,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:47:10,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:47:10,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 204 transitions, 2243 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 12:47:10,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:10,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:47:10,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:10,673 INFO L124 PetriNetUnfolderBase]: 450/848 cut-off events. [2024-06-14 12:47:10,673 INFO L125 PetriNetUnfolderBase]: For 66939/66942 co-relation queries the response was YES. [2024-06-14 12:47:10,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6716 conditions, 848 events. 450/848 cut-off events. For 66939/66942 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4369 event pairs, 40 based on Foata normal form. 2/845 useless extension candidates. Maximal degree in co-relation 6613. Up to 675 conditions per place. [2024-06-14 12:47:10,684 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 173 selfloop transitions, 43 changer transitions 0/219 dead transitions. [2024-06-14 12:47:10,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 219 transitions, 2933 flow [2024-06-14 12:47:10,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:47:10,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:47:10,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-14 12:47:10,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-14 12:47:10,686 INFO L175 Difference]: Start difference. First operand has 212 places, 204 transitions, 2243 flow. Second operand 10 states and 126 transitions. [2024-06-14 12:47:10,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 219 transitions, 2933 flow [2024-06-14 12:47:10,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 219 transitions, 2871 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-14 12:47:10,848 INFO L231 Difference]: Finished difference. Result has 215 places, 208 transitions, 2380 flow [2024-06-14 12:47:10,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2181, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2380, PETRI_PLACES=215, PETRI_TRANSITIONS=208} [2024-06-14 12:47:10,848 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 184 predicate places. [2024-06-14 12:47:10,849 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 208 transitions, 2380 flow [2024-06-14 12:47:10,849 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 12:47:10,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:10,849 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 12:47:10,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-14 12:47:10,849 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 12:47:10,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:10,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1059817710, now seen corresponding path program 3 times [2024-06-14 12:47:10,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:10,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049855902] [2024-06-14 12:47:10,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:10,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:10,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:12,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:12,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:12,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049855902] [2024-06-14 12:47:12,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049855902] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:12,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:12,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:47:12,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905532035] [2024-06-14 12:47:12,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:12,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:47:12,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:12,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:47:12,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:47:12,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:47:12,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 208 transitions, 2380 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 12:47:12,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:12,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:47:12,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:13,093 INFO L124 PetriNetUnfolderBase]: 454/855 cut-off events. [2024-06-14 12:47:13,093 INFO L125 PetriNetUnfolderBase]: For 69031/69031 co-relation queries the response was YES. [2024-06-14 12:47:13,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6837 conditions, 855 events. 454/855 cut-off events. For 69031/69031 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4410 event pairs, 36 based on Foata normal form. 2/855 useless extension candidates. Maximal degree in co-relation 6733. Up to 764 conditions per place. [2024-06-14 12:47:13,099 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 202 selfloop transitions, 15 changer transitions 0/220 dead transitions. [2024-06-14 12:47:13,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 220 transitions, 2870 flow [2024-06-14 12:47:13,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:47:13,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:47:13,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-14 12:47:13,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-14 12:47:13,100 INFO L175 Difference]: Start difference. First operand has 215 places, 208 transitions, 2380 flow. Second operand 10 states and 115 transitions. [2024-06-14 12:47:13,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 220 transitions, 2870 flow [2024-06-14 12:47:13,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 220 transitions, 2695 flow, removed 43 selfloop flow, removed 8 redundant places. [2024-06-14 12:47:13,245 INFO L231 Difference]: Finished difference. Result has 217 places, 209 transitions, 2271 flow [2024-06-14 12:47:13,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2205, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2271, PETRI_PLACES=217, PETRI_TRANSITIONS=209} [2024-06-14 12:47:13,246 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 186 predicate places. [2024-06-14 12:47:13,246 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 209 transitions, 2271 flow [2024-06-14 12:47:13,246 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 12:47:13,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:13,246 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 12:47:13,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-14 12:47:13,247 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 12:47:13,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:13,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1049698380, now seen corresponding path program 4 times [2024-06-14 12:47:13,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:13,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274818041] [2024-06-14 12:47:13,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:13,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:13,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:14,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:14,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:14,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274818041] [2024-06-14 12:47:14,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274818041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:14,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:14,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:47:14,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600830452] [2024-06-14 12:47:14,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:14,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:47:14,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:14,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:47:14,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:47:14,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:47:14,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 209 transitions, 2271 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 12:47:14,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:14,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:47:14,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:15,276 INFO L124 PetriNetUnfolderBase]: 458/863 cut-off events. [2024-06-14 12:47:15,276 INFO L125 PetriNetUnfolderBase]: For 70646/70646 co-relation queries the response was YES. [2024-06-14 12:47:15,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6805 conditions, 863 events. 458/863 cut-off events. For 70646/70646 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4465 event pairs, 38 based on Foata normal form. 2/863 useless extension candidates. Maximal degree in co-relation 6700. Up to 766 conditions per place. [2024-06-14 12:47:15,283 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 200 selfloop transitions, 19 changer transitions 0/222 dead transitions. [2024-06-14 12:47:15,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 222 transitions, 2769 flow [2024-06-14 12:47:15,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:47:15,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:47:15,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-14 12:47:15,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-14 12:47:15,285 INFO L175 Difference]: Start difference. First operand has 217 places, 209 transitions, 2271 flow. Second operand 11 states and 126 transitions. [2024-06-14 12:47:15,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 222 transitions, 2769 flow [2024-06-14 12:47:15,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 222 transitions, 2713 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-14 12:47:15,437 INFO L231 Difference]: Finished difference. Result has 220 places, 210 transitions, 2291 flow [2024-06-14 12:47:15,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2215, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2291, PETRI_PLACES=220, PETRI_TRANSITIONS=210} [2024-06-14 12:47:15,438 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 189 predicate places. [2024-06-14 12:47:15,438 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 210 transitions, 2291 flow [2024-06-14 12:47:15,438 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 12:47:15,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:15,438 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 12:47:15,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-14 12:47:15,438 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 12:47:15,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:15,439 INFO L85 PathProgramCache]: Analyzing trace with hash -713000986, now seen corresponding path program 13 times [2024-06-14 12:47:15,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:15,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825766541] [2024-06-14 12:47:15,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:15,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:15,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:16,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:16,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:16,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825766541] [2024-06-14 12:47:16,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825766541] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:16,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:16,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:47:16,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677287216] [2024-06-14 12:47:16,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:16,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:47:16,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:16,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:47:16,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:47:16,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:47:16,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 210 transitions, 2291 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 12:47:16,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:16,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:47:16,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:17,103 INFO L124 PetriNetUnfolderBase]: 456/861 cut-off events. [2024-06-14 12:47:17,104 INFO L125 PetriNetUnfolderBase]: For 67808/67811 co-relation queries the response was YES. [2024-06-14 12:47:17,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6702 conditions, 861 events. 456/861 cut-off events. For 67808/67811 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4475 event pairs, 42 based on Foata normal form. 1/857 useless extension candidates. Maximal degree in co-relation 6596. Up to 690 conditions per place. [2024-06-14 12:47:17,115 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 175 selfloop transitions, 44 changer transitions 0/222 dead transitions. [2024-06-14 12:47:17,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 222 transitions, 2904 flow [2024-06-14 12:47:17,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:47:17,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:47:17,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-14 12:47:17,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-14 12:47:17,117 INFO L175 Difference]: Start difference. First operand has 220 places, 210 transitions, 2291 flow. Second operand 10 states and 127 transitions. [2024-06-14 12:47:17,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 222 transitions, 2904 flow [2024-06-14 12:47:17,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 222 transitions, 2802 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-14 12:47:17,271 INFO L231 Difference]: Finished difference. Result has 221 places, 211 transitions, 2299 flow [2024-06-14 12:47:17,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2195, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2299, PETRI_PLACES=221, PETRI_TRANSITIONS=211} [2024-06-14 12:47:17,271 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 190 predicate places. [2024-06-14 12:47:17,271 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 211 transitions, 2299 flow [2024-06-14 12:47:17,271 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 12:47:17,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:17,272 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 12:47:17,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-14 12:47:17,272 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 12:47:17,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:17,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1102080122, now seen corresponding path program 5 times [2024-06-14 12:47:17,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:17,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674606345] [2024-06-14 12:47:17,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:17,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:17,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:18,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:18,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:18,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674606345] [2024-06-14 12:47:18,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674606345] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:18,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:18,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:47:18,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435578659] [2024-06-14 12:47:18,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:18,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:47:18,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:18,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:47:18,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:47:18,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:47:18,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 211 transitions, 2299 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 12:47:18,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:18,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:47:18,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:19,043 INFO L124 PetriNetUnfolderBase]: 460/868 cut-off events. [2024-06-14 12:47:19,044 INFO L125 PetriNetUnfolderBase]: For 71735/71735 co-relation queries the response was YES. [2024-06-14 12:47:19,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6773 conditions, 868 events. 460/868 cut-off events. For 71735/71735 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4520 event pairs, 36 based on Foata normal form. 2/868 useless extension candidates. Maximal degree in co-relation 6666. Up to 751 conditions per place. [2024-06-14 12:47:19,051 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 201 selfloop transitions, 21 changer transitions 0/225 dead transitions. [2024-06-14 12:47:19,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 225 transitions, 2807 flow [2024-06-14 12:47:19,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:47:19,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:47:19,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-14 12:47:19,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-14 12:47:19,052 INFO L175 Difference]: Start difference. First operand has 221 places, 211 transitions, 2299 flow. Second operand 11 states and 126 transitions. [2024-06-14 12:47:19,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 225 transitions, 2807 flow [2024-06-14 12:47:19,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 225 transitions, 2726 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-14 12:47:19,212 INFO L231 Difference]: Finished difference. Result has 225 places, 212 transitions, 2300 flow [2024-06-14 12:47:19,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2218, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2300, PETRI_PLACES=225, PETRI_TRANSITIONS=212} [2024-06-14 12:47:19,212 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 194 predicate places. [2024-06-14 12:47:19,212 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 212 transitions, 2300 flow [2024-06-14 12:47:19,212 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 12:47:19,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:19,213 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 12:47:19,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-14 12:47:19,213 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 12:47:19,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:19,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1344926508, now seen corresponding path program 14 times [2024-06-14 12:47:19,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:19,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844288003] [2024-06-14 12:47:19,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:19,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:19,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:20,582 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 12:47:20,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:20,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844288003] [2024-06-14 12:47:20,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844288003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:20,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:20,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:47:20,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515698258] [2024-06-14 12:47:20,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:20,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:47:20,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:20,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:47:20,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:47:20,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:47:20,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 212 transitions, 2300 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 12:47:20,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:20,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:47:20,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:21,064 INFO L124 PetriNetUnfolderBase]: 463/874 cut-off events. [2024-06-14 12:47:21,064 INFO L125 PetriNetUnfolderBase]: For 71934/71937 co-relation queries the response was YES. [2024-06-14 12:47:21,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6834 conditions, 874 events. 463/874 cut-off events. For 71934/71937 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4549 event pairs, 38 based on Foata normal form. 1/870 useless extension candidates. Maximal degree in co-relation 6726. Up to 575 conditions per place. [2024-06-14 12:47:21,073 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 154 selfloop transitions, 87 changer transitions 0/244 dead transitions. [2024-06-14 12:47:21,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 244 transitions, 3357 flow [2024-06-14 12:47:21,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:47:21,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:47:21,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-14 12:47:21,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-14 12:47:21,074 INFO L175 Difference]: Start difference. First operand has 225 places, 212 transitions, 2300 flow. Second operand 10 states and 131 transitions. [2024-06-14 12:47:21,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 244 transitions, 3357 flow [2024-06-14 12:47:21,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 244 transitions, 3285 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-14 12:47:21,224 INFO L231 Difference]: Finished difference. Result has 229 places, 225 transitions, 2702 flow [2024-06-14 12:47:21,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2228, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2702, PETRI_PLACES=229, PETRI_TRANSITIONS=225} [2024-06-14 12:47:21,224 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 198 predicate places. [2024-06-14 12:47:21,224 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 225 transitions, 2702 flow [2024-06-14 12:47:21,224 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 12:47:21,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:21,224 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 12:47:21,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-14 12:47:21,225 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 12:47:21,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:21,225 INFO L85 PathProgramCache]: Analyzing trace with hash -706507726, now seen corresponding path program 15 times [2024-06-14 12:47:21,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:21,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338873467] [2024-06-14 12:47:21,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:21,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:21,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:22,489 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 12:47:22,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:22,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338873467] [2024-06-14 12:47:22,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338873467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:22,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:22,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:47:22,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846918958] [2024-06-14 12:47:22,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:22,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:47:22,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:22,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:47:22,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:47:22,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:47:22,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 225 transitions, 2702 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 12:47:22,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:22,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:47:22,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:23,024 INFO L124 PetriNetUnfolderBase]: 461/871 cut-off events. [2024-06-14 12:47:23,024 INFO L125 PetriNetUnfolderBase]: For 71535/71538 co-relation queries the response was YES. [2024-06-14 12:47:23,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6999 conditions, 871 events. 461/871 cut-off events. For 71535/71538 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4538 event pairs, 38 based on Foata normal form. 1/867 useless extension candidates. Maximal degree in co-relation 6887. Up to 688 conditions per place. [2024-06-14 12:47:23,035 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 182 selfloop transitions, 52 changer transitions 0/237 dead transitions. [2024-06-14 12:47:23,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 237 transitions, 3212 flow [2024-06-14 12:47:23,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:47:23,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:47:23,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-14 12:47:23,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-14 12:47:23,037 INFO L175 Difference]: Start difference. First operand has 229 places, 225 transitions, 2702 flow. Second operand 10 states and 126 transitions. [2024-06-14 12:47:23,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 237 transitions, 3212 flow [2024-06-14 12:47:23,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 237 transitions, 3033 flow, removed 73 selfloop flow, removed 3 redundant places. [2024-06-14 12:47:23,202 INFO L231 Difference]: Finished difference. Result has 237 places, 226 transitions, 2645 flow [2024-06-14 12:47:23,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2523, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2645, PETRI_PLACES=237, PETRI_TRANSITIONS=226} [2024-06-14 12:47:23,203 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 206 predicate places. [2024-06-14 12:47:23,203 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 226 transitions, 2645 flow [2024-06-14 12:47:23,203 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 12:47:23,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:23,203 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 12:47:23,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-14 12:47:23,203 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 12:47:23,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:23,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1344917580, now seen corresponding path program 6 times [2024-06-14 12:47:23,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:23,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15765034] [2024-06-14 12:47:23,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:23,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:23,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:24,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:24,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:24,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15765034] [2024-06-14 12:47:24,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15765034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:24,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:24,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:47:24,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771214298] [2024-06-14 12:47:24,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:24,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:47:24,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:24,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:47:24,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:47:24,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:47:24,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 226 transitions, 2645 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 12:47:24,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:24,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:47:24,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:25,062 INFO L124 PetriNetUnfolderBase]: 458/866 cut-off events. [2024-06-14 12:47:25,062 INFO L125 PetriNetUnfolderBase]: For 69702/69705 co-relation queries the response was YES. [2024-06-14 12:47:25,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6775 conditions, 866 events. 458/866 cut-off events. For 69702/69705 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4490 event pairs, 32 based on Foata normal form. 4/866 useless extension candidates. Maximal degree in co-relation 6660. Up to 737 conditions per place. [2024-06-14 12:47:25,074 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 205 selfloop transitions, 30 changer transitions 0/238 dead transitions. [2024-06-14 12:47:25,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 238 transitions, 3147 flow [2024-06-14 12:47:25,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:47:25,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:47:25,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-14 12:47:25,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 12:47:25,076 INFO L175 Difference]: Start difference. First operand has 237 places, 226 transitions, 2645 flow. Second operand 10 states and 120 transitions. [2024-06-14 12:47:25,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 238 transitions, 3147 flow [2024-06-14 12:47:25,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 238 transitions, 3051 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-14 12:47:25,236 INFO L231 Difference]: Finished difference. Result has 240 places, 226 transitions, 2613 flow [2024-06-14 12:47:25,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2549, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2613, PETRI_PLACES=240, PETRI_TRANSITIONS=226} [2024-06-14 12:47:25,237 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 209 predicate places. [2024-06-14 12:47:25,237 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 226 transitions, 2613 flow [2024-06-14 12:47:25,238 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 12:47:25,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:25,238 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 12:47:25,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-14 12:47:25,238 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 12:47:25,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:25,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1803756084, now seen corresponding path program 16 times [2024-06-14 12:47:25,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:25,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862784123] [2024-06-14 12:47:25,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:25,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:25,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:26,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:26,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:26,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862784123] [2024-06-14 12:47:26,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862784123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:26,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:26,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:47:26,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781005878] [2024-06-14 12:47:26,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:26,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:47:26,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:26,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:47:26,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:47:26,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:47:26,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 226 transitions, 2613 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 12:47:26,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:26,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:47:26,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:27,098 INFO L124 PetriNetUnfolderBase]: 461/871 cut-off events. [2024-06-14 12:47:27,098 INFO L125 PetriNetUnfolderBase]: For 68753/68756 co-relation queries the response was YES. [2024-06-14 12:47:27,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6809 conditions, 871 events. 461/871 cut-off events. For 68753/68756 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4534 event pairs, 37 based on Foata normal form. 1/867 useless extension candidates. Maximal degree in co-relation 6693. Up to 572 conditions per place. [2024-06-14 12:47:27,106 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 150 selfloop transitions, 93 changer transitions 0/246 dead transitions. [2024-06-14 12:47:27,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 246 transitions, 3380 flow [2024-06-14 12:47:27,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:47:27,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:47:27,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-14 12:47:27,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-14 12:47:27,107 INFO L175 Difference]: Start difference. First operand has 240 places, 226 transitions, 2613 flow. Second operand 10 states and 128 transitions. [2024-06-14 12:47:27,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 246 transitions, 3380 flow [2024-06-14 12:47:27,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 246 transitions, 3235 flow, removed 17 selfloop flow, removed 11 redundant places. [2024-06-14 12:47:27,298 INFO L231 Difference]: Finished difference. Result has 240 places, 231 transitions, 2744 flow [2024-06-14 12:47:27,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2468, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2744, PETRI_PLACES=240, PETRI_TRANSITIONS=231} [2024-06-14 12:47:27,298 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 209 predicate places. [2024-06-14 12:47:27,299 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 231 transitions, 2744 flow [2024-06-14 12:47:27,299 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 12:47:27,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:27,299 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 12:47:27,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-14 12:47:27,299 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 12:47:27,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:27,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1345157148, now seen corresponding path program 17 times [2024-06-14 12:47:27,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:27,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569348796] [2024-06-14 12:47:27,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:27,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:27,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:28,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:28,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:28,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569348796] [2024-06-14 12:47:28,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569348796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:28,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:28,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:47:28,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889381559] [2024-06-14 12:47:28,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:28,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:47:28,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:28,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:47:28,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:47:28,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:47:28,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 231 transitions, 2744 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 12:47:28,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:28,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:47:28,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:28,844 INFO L124 PetriNetUnfolderBase]: 459/870 cut-off events. [2024-06-14 12:47:28,844 INFO L125 PetriNetUnfolderBase]: For 67898/67901 co-relation queries the response was YES. [2024-06-14 12:47:28,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6774 conditions, 870 events. 459/870 cut-off events. For 67898/67901 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4528 event pairs, 37 based on Foata normal form. 1/866 useless extension candidates. Maximal degree in co-relation 6658. Up to 570 conditions per place. [2024-06-14 12:47:28,852 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 151 selfloop transitions, 91 changer transitions 0/245 dead transitions. [2024-06-14 12:47:28,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 245 transitions, 3292 flow [2024-06-14 12:47:28,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:47:28,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:47:28,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-14 12:47:28,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-14 12:47:28,853 INFO L175 Difference]: Start difference. First operand has 240 places, 231 transitions, 2744 flow. Second operand 10 states and 128 transitions. [2024-06-14 12:47:28,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 245 transitions, 3292 flow [2024-06-14 12:47:29,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 245 transitions, 3045 flow, removed 43 selfloop flow, removed 6 redundant places. [2024-06-14 12:47:29,054 INFO L231 Difference]: Finished difference. Result has 244 places, 231 transitions, 2684 flow [2024-06-14 12:47:29,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2497, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2684, PETRI_PLACES=244, PETRI_TRANSITIONS=231} [2024-06-14 12:47:29,055 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 213 predicate places. [2024-06-14 12:47:29,055 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 231 transitions, 2684 flow [2024-06-14 12:47:29,055 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 12:47:29,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:29,056 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 12:47:29,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-14 12:47:29,056 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 12:47:29,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:29,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1195586245, now seen corresponding path program 1 times [2024-06-14 12:47:29,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:29,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142677956] [2024-06-14 12:47:29,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:29,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:29,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:30,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:30,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:30,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142677956] [2024-06-14 12:47:30,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142677956] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:30,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:30,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:47:30,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644743869] [2024-06-14 12:47:30,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:30,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:47:30,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:30,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:47:30,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:47:30,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:47:30,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 231 transitions, 2684 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 12:47:30,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:30,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:47:30,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:30,638 INFO L124 PetriNetUnfolderBase]: 463/877 cut-off events. [2024-06-14 12:47:30,638 INFO L125 PetriNetUnfolderBase]: For 72214/72214 co-relation queries the response was YES. [2024-06-14 12:47:30,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6791 conditions, 877 events. 463/877 cut-off events. For 72214/72214 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4582 event pairs, 11 based on Foata normal form. 2/877 useless extension candidates. Maximal degree in co-relation 6674. Up to 729 conditions per place. [2024-06-14 12:47:30,645 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 231 selfloop transitions, 19 changer transitions 0/253 dead transitions. [2024-06-14 12:47:30,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 253 transitions, 3268 flow [2024-06-14 12:47:30,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:47:30,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:47:30,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-14 12:47:30,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-14 12:47:30,646 INFO L175 Difference]: Start difference. First operand has 244 places, 231 transitions, 2684 flow. Second operand 10 states and 123 transitions. [2024-06-14 12:47:30,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 253 transitions, 3268 flow [2024-06-14 12:47:30,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 253 transitions, 3097 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-14 12:47:30,855 INFO L231 Difference]: Finished difference. Result has 247 places, 232 transitions, 2583 flow [2024-06-14 12:47:30,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2513, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2583, PETRI_PLACES=247, PETRI_TRANSITIONS=232} [2024-06-14 12:47:30,856 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 216 predicate places. [2024-06-14 12:47:30,856 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 232 transitions, 2583 flow [2024-06-14 12:47:30,856 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 12:47:30,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:30,856 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 12:47:30,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-14 12:47:30,856 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 12:47:30,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:30,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1579348699, now seen corresponding path program 2 times [2024-06-14 12:47:30,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:30,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697290298] [2024-06-14 12:47:30,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:30,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:30,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:32,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:32,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:32,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697290298] [2024-06-14 12:47:32,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697290298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:32,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:32,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:47:32,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521252315] [2024-06-14 12:47:32,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:32,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:47:32,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:32,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:47:32,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:47:32,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:47:32,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 232 transitions, 2583 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 12:47:32,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:32,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:47:32,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:32,626 INFO L124 PetriNetUnfolderBase]: 467/883 cut-off events. [2024-06-14 12:47:32,626 INFO L125 PetriNetUnfolderBase]: For 73820/73820 co-relation queries the response was YES. [2024-06-14 12:47:32,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6759 conditions, 883 events. 467/883 cut-off events. For 73820/73820 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 4630 event pairs, 29 based on Foata normal form. 2/883 useless extension candidates. Maximal degree in co-relation 6641. Up to 759 conditions per place. [2024-06-14 12:47:32,633 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 228 selfloop transitions, 21 changer transitions 0/252 dead transitions. [2024-06-14 12:47:32,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 252 transitions, 3163 flow [2024-06-14 12:47:32,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:47:32,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:47:32,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-14 12:47:32,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-14 12:47:32,634 INFO L175 Difference]: Start difference. First operand has 247 places, 232 transitions, 2583 flow. Second operand 10 states and 124 transitions. [2024-06-14 12:47:32,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 252 transitions, 3163 flow [2024-06-14 12:47:32,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 252 transitions, 3103 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-14 12:47:32,812 INFO L231 Difference]: Finished difference. Result has 249 places, 233 transitions, 2599 flow [2024-06-14 12:47:32,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2523, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2599, PETRI_PLACES=249, PETRI_TRANSITIONS=233} [2024-06-14 12:47:32,813 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 218 predicate places. [2024-06-14 12:47:32,813 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 233 transitions, 2599 flow [2024-06-14 12:47:32,813 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 12:47:32,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:32,813 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 12:47:32,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-14 12:47:32,813 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 12:47:32,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:32,813 INFO L85 PathProgramCache]: Analyzing trace with hash -633403039, now seen corresponding path program 3 times [2024-06-14 12:47:32,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:32,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461794465] [2024-06-14 12:47:32,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:32,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:32,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:33,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:33,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:33,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461794465] [2024-06-14 12:47:33,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461794465] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:33,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:33,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:47:33,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567504224] [2024-06-14 12:47:33,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:33,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:47:33,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:33,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:47:33,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:47:33,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:47:33,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 233 transitions, 2599 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 12:47:33,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:33,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:47:33,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:34,316 INFO L124 PetriNetUnfolderBase]: 471/891 cut-off events. [2024-06-14 12:47:34,317 INFO L125 PetriNetUnfolderBase]: For 77122/77122 co-relation queries the response was YES. [2024-06-14 12:47:34,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6821 conditions, 891 events. 471/891 cut-off events. For 77122/77122 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4680 event pairs, 27 based on Foata normal form. 2/891 useless extension candidates. Maximal degree in co-relation 6702. Up to 762 conditions per place. [2024-06-14 12:47:34,323 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 231 selfloop transitions, 20 changer transitions 0/254 dead transitions. [2024-06-14 12:47:34,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 254 transitions, 3187 flow [2024-06-14 12:47:34,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:47:34,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:47:34,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-14 12:47:34,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-14 12:47:34,324 INFO L175 Difference]: Start difference. First operand has 249 places, 233 transitions, 2599 flow. Second operand 10 states and 124 transitions. [2024-06-14 12:47:34,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 254 transitions, 3187 flow [2024-06-14 12:47:34,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 254 transitions, 3121 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-14 12:47:34,513 INFO L231 Difference]: Finished difference. Result has 251 places, 234 transitions, 2609 flow [2024-06-14 12:47:34,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2533, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2609, PETRI_PLACES=251, PETRI_TRANSITIONS=234} [2024-06-14 12:47:34,513 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 220 predicate places. [2024-06-14 12:47:34,513 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 234 transitions, 2609 flow [2024-06-14 12:47:34,514 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 12:47:34,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:34,514 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 12:47:34,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-14 12:47:34,514 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 12:47:34,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:34,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1262142005, now seen corresponding path program 4 times [2024-06-14 12:47:34,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:34,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331291174] [2024-06-14 12:47:34,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:34,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:34,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:35,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:35,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:35,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331291174] [2024-06-14 12:47:35,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331291174] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:35,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:35,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:47:35,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903780977] [2024-06-14 12:47:35,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:35,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:47:35,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:35,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:47:35,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:47:36,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:47:36,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 234 transitions, 2609 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 12:47:36,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:36,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:47:36,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:36,470 INFO L124 PetriNetUnfolderBase]: 475/899 cut-off events. [2024-06-14 12:47:36,470 INFO L125 PetriNetUnfolderBase]: For 79182/79182 co-relation queries the response was YES. [2024-06-14 12:47:36,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6881 conditions, 899 events. 475/899 cut-off events. For 79182/79182 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 4735 event pairs, 29 based on Foata normal form. 2/899 useless extension candidates. Maximal degree in co-relation 6761. Up to 769 conditions per place. [2024-06-14 12:47:36,477 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 222 selfloop transitions, 26 changer transitions 0/251 dead transitions. [2024-06-14 12:47:36,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 251 transitions, 3181 flow [2024-06-14 12:47:36,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:47:36,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:47:36,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-14 12:47:36,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-14 12:47:36,478 INFO L175 Difference]: Start difference. First operand has 251 places, 234 transitions, 2609 flow. Second operand 10 states and 123 transitions. [2024-06-14 12:47:36,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 251 transitions, 3181 flow [2024-06-14 12:47:36,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 251 transitions, 3115 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-14 12:47:36,665 INFO L231 Difference]: Finished difference. Result has 253 places, 235 transitions, 2633 flow [2024-06-14 12:47:36,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2543, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2633, PETRI_PLACES=253, PETRI_TRANSITIONS=235} [2024-06-14 12:47:36,665 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 222 predicate places. [2024-06-14 12:47:36,665 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 235 transitions, 2633 flow [2024-06-14 12:47:36,666 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 12:47:36,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:36,666 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 12:47:36,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-14 12:47:36,666 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 12:47:36,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:36,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1267504385, now seen corresponding path program 5 times [2024-06-14 12:47:36,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:36,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289004945] [2024-06-14 12:47:36,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:36,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:36,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:38,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:38,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:38,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289004945] [2024-06-14 12:47:38,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289004945] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:38,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:38,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:47:38,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235184510] [2024-06-14 12:47:38,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:38,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:47:38,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:38,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:47:38,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:47:38,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:47:38,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 235 transitions, 2633 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 12:47:38,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:38,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:47:38,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:38,490 INFO L124 PetriNetUnfolderBase]: 479/907 cut-off events. [2024-06-14 12:47:38,490 INFO L125 PetriNetUnfolderBase]: For 81252/81252 co-relation queries the response was YES. [2024-06-14 12:47:38,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6952 conditions, 907 events. 479/907 cut-off events. For 81252/81252 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 4809 event pairs, 31 based on Foata normal form. 2/907 useless extension candidates. Maximal degree in co-relation 6831. Up to 785 conditions per place. [2024-06-14 12:47:38,498 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 226 selfloop transitions, 24 changer transitions 0/253 dead transitions. [2024-06-14 12:47:38,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 253 transitions, 3222 flow [2024-06-14 12:47:38,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:47:38,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:47:38,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-14 12:47:38,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-14 12:47:38,499 INFO L175 Difference]: Start difference. First operand has 253 places, 235 transitions, 2633 flow. Second operand 10 states and 121 transitions. [2024-06-14 12:47:38,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 253 transitions, 3222 flow [2024-06-14 12:47:38,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 253 transitions, 3140 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-14 12:47:38,699 INFO L231 Difference]: Finished difference. Result has 256 places, 237 transitions, 2656 flow [2024-06-14 12:47:38,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2553, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2656, PETRI_PLACES=256, PETRI_TRANSITIONS=237} [2024-06-14 12:47:38,699 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 225 predicate places. [2024-06-14 12:47:38,700 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 237 transitions, 2656 flow [2024-06-14 12:47:38,700 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 12:47:38,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:38,700 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 12:47:38,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-14 12:47:38,700 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 12:47:38,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:38,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1267652255, now seen corresponding path program 6 times [2024-06-14 12:47:38,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:38,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052053548] [2024-06-14 12:47:38,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:38,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:38,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:39,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:39,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:39,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052053548] [2024-06-14 12:47:39,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052053548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:39,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:39,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:47:39,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690725781] [2024-06-14 12:47:39,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:39,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:47:39,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:39,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:47:39,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:47:39,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:47:39,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 237 transitions, 2656 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 12:47:39,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:39,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:47:39,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:40,365 INFO L124 PetriNetUnfolderBase]: 483/915 cut-off events. [2024-06-14 12:47:40,365 INFO L125 PetriNetUnfolderBase]: For 83349/83349 co-relation queries the response was YES. [2024-06-14 12:47:40,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7015 conditions, 915 events. 483/915 cut-off events. For 83349/83349 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 4862 event pairs, 29 based on Foata normal form. 2/915 useless extension candidates. Maximal degree in co-relation 6892. Up to 788 conditions per place. [2024-06-14 12:47:40,373 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 229 selfloop transitions, 23 changer transitions 0/255 dead transitions. [2024-06-14 12:47:40,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 255 transitions, 3242 flow [2024-06-14 12:47:40,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:47:40,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:47:40,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-14 12:47:40,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-14 12:47:40,375 INFO L175 Difference]: Start difference. First operand has 256 places, 237 transitions, 2656 flow. Second operand 10 states and 121 transitions. [2024-06-14 12:47:40,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 255 transitions, 3242 flow [2024-06-14 12:47:40,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 255 transitions, 3168 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-14 12:47:40,569 INFO L231 Difference]: Finished difference. Result has 259 places, 238 transitions, 2670 flow [2024-06-14 12:47:40,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2582, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2670, PETRI_PLACES=259, PETRI_TRANSITIONS=238} [2024-06-14 12:47:40,570 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 228 predicate places. [2024-06-14 12:47:40,570 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 238 transitions, 2670 flow [2024-06-14 12:47:40,570 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 12:47:40,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:40,570 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 12:47:40,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-14 12:47:40,570 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 12:47:40,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:40,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1262136053, now seen corresponding path program 1 times [2024-06-14 12:47:40,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:40,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591378318] [2024-06-14 12:47:40,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:40,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:40,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:42,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:42,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:42,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591378318] [2024-06-14 12:47:42,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591378318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:42,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:42,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:47:42,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763047787] [2024-06-14 12:47:42,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:42,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:47:42,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:42,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:47:42,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:47:42,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:47:42,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 238 transitions, 2670 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 12:47:42,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:42,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:47:42,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:42,918 INFO L124 PetriNetUnfolderBase]: 486/920 cut-off events. [2024-06-14 12:47:42,918 INFO L125 PetriNetUnfolderBase]: For 81991/81991 co-relation queries the response was YES. [2024-06-14 12:47:42,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7047 conditions, 920 events. 486/920 cut-off events. For 81991/81991 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 4889 event pairs, 31 based on Foata normal form. 1/919 useless extension candidates. Maximal degree in co-relation 6923. Up to 781 conditions per place. [2024-06-14 12:47:42,927 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 222 selfloop transitions, 33 changer transitions 0/258 dead transitions. [2024-06-14 12:47:42,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 258 transitions, 3305 flow [2024-06-14 12:47:42,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:47:42,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:47:42,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-14 12:47:42,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-14 12:47:42,928 INFO L175 Difference]: Start difference. First operand has 259 places, 238 transitions, 2670 flow. Second operand 11 states and 135 transitions. [2024-06-14 12:47:42,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 258 transitions, 3305 flow [2024-06-14 12:47:43,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 258 transitions, 3227 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-14 12:47:43,137 INFO L231 Difference]: Finished difference. Result has 263 places, 242 transitions, 2761 flow [2024-06-14 12:47:43,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2592, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2761, PETRI_PLACES=263, PETRI_TRANSITIONS=242} [2024-06-14 12:47:43,137 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 232 predicate places. [2024-06-14 12:47:43,137 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 242 transitions, 2761 flow [2024-06-14 12:47:43,137 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 12:47:43,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:43,138 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 12:47:43,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-14 12:47:43,138 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 12:47:43,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:43,138 INFO L85 PathProgramCache]: Analyzing trace with hash 907366275, now seen corresponding path program 2 times [2024-06-14 12:47:43,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:43,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308736869] [2024-06-14 12:47:43,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:43,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:43,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:44,412 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 12:47:44,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:44,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308736869] [2024-06-14 12:47:44,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308736869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:44,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:44,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:47:44,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863016127] [2024-06-14 12:47:44,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:44,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:47:44,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:44,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:47:44,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:47:44,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:47:44,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 242 transitions, 2761 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 12:47:44,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:44,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:47:44,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:45,014 INFO L124 PetriNetUnfolderBase]: 484/917 cut-off events. [2024-06-14 12:47:45,014 INFO L125 PetriNetUnfolderBase]: For 80294/80294 co-relation queries the response was YES. [2024-06-14 12:47:45,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6940 conditions, 917 events. 484/917 cut-off events. For 80294/80294 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 4882 event pairs, 31 based on Foata normal form. 1/916 useless extension candidates. Maximal degree in co-relation 6814. Up to 766 conditions per place. [2024-06-14 12:47:45,024 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 216 selfloop transitions, 39 changer transitions 0/258 dead transitions. [2024-06-14 12:47:45,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 258 transitions, 3315 flow [2024-06-14 12:47:45,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:47:45,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:47:45,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-14 12:47:45,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-14 12:47:45,025 INFO L175 Difference]: Start difference. First operand has 263 places, 242 transitions, 2761 flow. Second operand 11 states and 136 transitions. [2024-06-14 12:47:45,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 258 transitions, 3315 flow [2024-06-14 12:47:45,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 258 transitions, 3177 flow, removed 45 selfloop flow, removed 7 redundant places. [2024-06-14 12:47:45,247 INFO L231 Difference]: Finished difference. Result has 267 places, 242 transitions, 2706 flow [2024-06-14 12:47:45,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2623, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2706, PETRI_PLACES=267, PETRI_TRANSITIONS=242} [2024-06-14 12:47:45,247 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 236 predicate places. [2024-06-14 12:47:45,248 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 242 transitions, 2706 flow [2024-06-14 12:47:45,248 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 12:47:45,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:45,248 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 12:47:45,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-14 12:47:45,248 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 12:47:45,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:45,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1261926524, now seen corresponding path program 1 times [2024-06-14 12:47:45,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:45,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830346433] [2024-06-14 12:47:45,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:45,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:45,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:46,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:46,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:46,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830346433] [2024-06-14 12:47:46,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830346433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:46,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:46,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:47:46,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926214446] [2024-06-14 12:47:46,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:46,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:47:46,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:46,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:47:46,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:47:46,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:47:46,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 242 transitions, 2706 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 12:47:46,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:46,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:47:46,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:47,097 INFO L124 PetriNetUnfolderBase]: 500/953 cut-off events. [2024-06-14 12:47:47,097 INFO L125 PetriNetUnfolderBase]: For 111103/111103 co-relation queries the response was YES. [2024-06-14 12:47:47,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7113 conditions, 953 events. 500/953 cut-off events. For 111103/111103 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5130 event pairs, 35 based on Foata normal form. 10/961 useless extension candidates. Maximal degree in co-relation 6986. Up to 782 conditions per place. [2024-06-14 12:47:47,106 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 226 selfloop transitions, 30 changer transitions 4/263 dead transitions. [2024-06-14 12:47:47,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 263 transitions, 3356 flow [2024-06-14 12:47:47,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:47:47,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:47:47,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-14 12:47:47,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-14 12:47:47,107 INFO L175 Difference]: Start difference. First operand has 267 places, 242 transitions, 2706 flow. Second operand 11 states and 138 transitions. [2024-06-14 12:47:47,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 263 transitions, 3356 flow [2024-06-14 12:47:47,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 263 transitions, 3238 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-14 12:47:47,324 INFO L231 Difference]: Finished difference. Result has 267 places, 242 transitions, 2661 flow [2024-06-14 12:47:47,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2588, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2661, PETRI_PLACES=267, PETRI_TRANSITIONS=242} [2024-06-14 12:47:47,324 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 236 predicate places. [2024-06-14 12:47:47,325 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 242 transitions, 2661 flow [2024-06-14 12:47:47,325 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 12:47:47,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:47,325 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 12:47:47,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-14 12:47:47,325 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 12:47:47,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:47,326 INFO L85 PathProgramCache]: Analyzing trace with hash 2040926931, now seen corresponding path program 7 times [2024-06-14 12:47:47,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:47,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393990080] [2024-06-14 12:47:47,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:47,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:47,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:48,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:48,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:48,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393990080] [2024-06-14 12:47:48,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393990080] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:48,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:48,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:47:48,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686179604] [2024-06-14 12:47:48,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:48,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:47:48,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:48,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:47:48,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:47:48,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:47:48,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 242 transitions, 2661 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 12:47:48,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:48,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:47:48,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:49,164 INFO L124 PetriNetUnfolderBase]: 498/951 cut-off events. [2024-06-14 12:47:49,164 INFO L125 PetriNetUnfolderBase]: For 88274/88274 co-relation queries the response was YES. [2024-06-14 12:47:49,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7120 conditions, 951 events. 498/951 cut-off events. For 88274/88274 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5126 event pairs, 39 based on Foata normal form. 2/951 useless extension candidates. Maximal degree in co-relation 6992. Up to 820 conditions per place. [2024-06-14 12:47:49,173 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 227 selfloop transitions, 27 changer transitions 0/257 dead transitions. [2024-06-14 12:47:49,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 257 transitions, 3248 flow [2024-06-14 12:47:49,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:47:49,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:47:49,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-14 12:47:49,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-14 12:47:49,174 INFO L175 Difference]: Start difference. First operand has 267 places, 242 transitions, 2661 flow. Second operand 10 states and 121 transitions. [2024-06-14 12:47:49,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 257 transitions, 3248 flow [2024-06-14 12:47:49,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 257 transitions, 3175 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-14 12:47:49,398 INFO L231 Difference]: Finished difference. Result has 269 places, 244 transitions, 2700 flow [2024-06-14 12:47:49,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2588, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2700, PETRI_PLACES=269, PETRI_TRANSITIONS=244} [2024-06-14 12:47:49,399 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 238 predicate places. [2024-06-14 12:47:49,399 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 244 transitions, 2700 flow [2024-06-14 12:47:49,399 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 12:47:49,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:49,399 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 12:47:49,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-14 12:47:49,400 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 12:47:49,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:49,400 INFO L85 PathProgramCache]: Analyzing trace with hash 2040779061, now seen corresponding path program 8 times [2024-06-14 12:47:49,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:49,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170363713] [2024-06-14 12:47:49,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:49,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:49,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:50,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:50,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:50,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170363713] [2024-06-14 12:47:50,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170363713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:50,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:50,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:47:50,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121334176] [2024-06-14 12:47:50,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:50,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:47:50,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:50,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:47:50,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:47:50,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:47:50,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 244 transitions, 2700 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 12:47:50,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:50,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:47:50,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:51,128 INFO L124 PetriNetUnfolderBase]: 502/959 cut-off events. [2024-06-14 12:47:51,128 INFO L125 PetriNetUnfolderBase]: For 90987/90987 co-relation queries the response was YES. [2024-06-14 12:47:51,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7224 conditions, 959 events. 502/959 cut-off events. For 90987/90987 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5195 event pairs, 37 based on Foata normal form. 2/959 useless extension candidates. Maximal degree in co-relation 7094. Up to 823 conditions per place. [2024-06-14 12:47:51,138 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 230 selfloop transitions, 26 changer transitions 0/259 dead transitions. [2024-06-14 12:47:51,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 259 transitions, 3286 flow [2024-06-14 12:47:51,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:47:51,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:47:51,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-14 12:47:51,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-14 12:47:51,139 INFO L175 Difference]: Start difference. First operand has 269 places, 244 transitions, 2700 flow. Second operand 10 states and 121 transitions. [2024-06-14 12:47:51,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 259 transitions, 3286 flow [2024-06-14 12:47:51,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 259 transitions, 3201 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-14 12:47:51,375 INFO L231 Difference]: Finished difference. Result has 272 places, 245 transitions, 2713 flow [2024-06-14 12:47:51,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2615, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2713, PETRI_PLACES=272, PETRI_TRANSITIONS=245} [2024-06-14 12:47:51,375 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 241 predicate places. [2024-06-14 12:47:51,375 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 245 transitions, 2713 flow [2024-06-14 12:47:51,376 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 12:47:51,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:51,376 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 12:47:51,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-14 12:47:51,376 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 12:47:51,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:51,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1747004371, now seen corresponding path program 9 times [2024-06-14 12:47:51,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:51,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021055392] [2024-06-14 12:47:51,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:51,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:51,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:52,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:52,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:52,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021055392] [2024-06-14 12:47:52,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021055392] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:52,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:52,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:47:52,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538482404] [2024-06-14 12:47:52,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:52,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:47:52,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:52,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:47:52,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:47:52,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:47:52,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 245 transitions, 2713 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 12:47:52,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:52,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:47:52,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:53,329 INFO L124 PetriNetUnfolderBase]: 506/967 cut-off events. [2024-06-14 12:47:53,329 INFO L125 PetriNetUnfolderBase]: For 93343/93343 co-relation queries the response was YES. [2024-06-14 12:47:53,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7285 conditions, 967 events. 506/967 cut-off events. For 93343/93343 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5254 event pairs, 39 based on Foata normal form. 2/967 useless extension candidates. Maximal degree in co-relation 7154. Up to 830 conditions per place. [2024-06-14 12:47:53,339 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 226 selfloop transitions, 30 changer transitions 0/259 dead transitions. [2024-06-14 12:47:53,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 259 transitions, 3299 flow [2024-06-14 12:47:53,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:47:53,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:47:53,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-14 12:47:53,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-14 12:47:53,340 INFO L175 Difference]: Start difference. First operand has 272 places, 245 transitions, 2713 flow. Second operand 10 states and 123 transitions. [2024-06-14 12:47:53,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 259 transitions, 3299 flow [2024-06-14 12:47:53,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 259 transitions, 3211 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-14 12:47:53,616 INFO L231 Difference]: Finished difference. Result has 274 places, 246 transitions, 2733 flow [2024-06-14 12:47:53,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2625, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2733, PETRI_PLACES=274, PETRI_TRANSITIONS=246} [2024-06-14 12:47:53,616 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 243 predicate places. [2024-06-14 12:47:53,617 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 246 transitions, 2733 flow [2024-06-14 12:47:53,617 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 12:47:53,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:53,617 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 12:47:53,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-14 12:47:53,617 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 12:47:53,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:53,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1940943781, now seen corresponding path program 10 times [2024-06-14 12:47:53,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:53,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204183958] [2024-06-14 12:47:53,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:53,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:53,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:54,688 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 12:47:54,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:54,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204183958] [2024-06-14 12:47:54,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204183958] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:54,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:54,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:47:54,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163246818] [2024-06-14 12:47:54,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:54,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:47:54,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:54,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:47:54,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:47:54,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:47:54,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 246 transitions, 2733 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 12:47:54,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:54,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:47:54,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:55,189 INFO L124 PetriNetUnfolderBase]: 510/975 cut-off events. [2024-06-14 12:47:55,190 INFO L125 PetriNetUnfolderBase]: For 95763/95763 co-relation queries the response was YES. [2024-06-14 12:47:55,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7352 conditions, 975 events. 510/975 cut-off events. For 95763/95763 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5300 event pairs, 39 based on Foata normal form. 2/975 useless extension candidates. Maximal degree in co-relation 7220. Up to 816 conditions per place. [2024-06-14 12:47:55,199 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 218 selfloop transitions, 39 changer transitions 0/260 dead transitions. [2024-06-14 12:47:55,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 260 transitions, 3323 flow [2024-06-14 12:47:55,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:47:55,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:47:55,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-14 12:47:55,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-14 12:47:55,200 INFO L175 Difference]: Start difference. First operand has 274 places, 246 transitions, 2733 flow. Second operand 10 states and 123 transitions. [2024-06-14 12:47:55,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 260 transitions, 3323 flow [2024-06-14 12:47:55,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 260 transitions, 3225 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-14 12:47:55,473 INFO L231 Difference]: Finished difference. Result has 276 places, 247 transitions, 2763 flow [2024-06-14 12:47:55,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2635, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2763, PETRI_PLACES=276, PETRI_TRANSITIONS=247} [2024-06-14 12:47:55,473 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 245 predicate places. [2024-06-14 12:47:55,473 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 247 transitions, 2763 flow [2024-06-14 12:47:55,473 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 12:47:55,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:55,474 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 12:47:55,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-14 12:47:55,474 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 12:47:55,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:55,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1747010323, now seen corresponding path program 3 times [2024-06-14 12:47:55,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:55,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124583038] [2024-06-14 12:47:55,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:55,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:55,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:47:57,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:47:57,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:47:57,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124583038] [2024-06-14 12:47:57,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124583038] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:47:57,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:47:57,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:47:57,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657343311] [2024-06-14 12:47:57,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:47:57,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:47:57,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:47:57,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:47:57,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:47:57,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:47:57,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 247 transitions, 2763 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 12:47:57,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:47:57,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:47:57,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:47:58,452 INFO L124 PetriNetUnfolderBase]: 513/980 cut-off events. [2024-06-14 12:47:58,452 INFO L125 PetriNetUnfolderBase]: For 93571/93571 co-relation queries the response was YES. [2024-06-14 12:47:58,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7383 conditions, 980 events. 513/980 cut-off events. For 93571/93571 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 5368 event pairs, 39 based on Foata normal form. 1/979 useless extension candidates. Maximal degree in co-relation 7250. Up to 816 conditions per place. [2024-06-14 12:47:58,461 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 223 selfloop transitions, 37 changer transitions 0/263 dead transitions. [2024-06-14 12:47:58,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 263 transitions, 3371 flow [2024-06-14 12:47:58,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:47:58,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:47:58,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-14 12:47:58,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-14 12:47:58,462 INFO L175 Difference]: Start difference. First operand has 276 places, 247 transitions, 2763 flow. Second operand 11 states and 136 transitions. [2024-06-14 12:47:58,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 263 transitions, 3371 flow [2024-06-14 12:47:58,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 263 transitions, 3253 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-14 12:47:58,735 INFO L231 Difference]: Finished difference. Result has 279 places, 249 transitions, 2780 flow [2024-06-14 12:47:58,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2645, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2780, PETRI_PLACES=279, PETRI_TRANSITIONS=249} [2024-06-14 12:47:58,736 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 248 predicate places. [2024-06-14 12:47:58,736 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 249 transitions, 2780 flow [2024-06-14 12:47:58,736 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 12:47:58,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:47:58,736 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 12:47:58,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-14 12:47:58,736 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 12:47:58,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:47:58,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1948568572, now seen corresponding path program 2 times [2024-06-14 12:47:58,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:47:58,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841027099] [2024-06-14 12:47:58,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:47:58,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:47:58,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:00,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:00,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:00,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841027099] [2024-06-14 12:48:00,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841027099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:00,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:00,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:48:00,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950685464] [2024-06-14 12:48:00,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:00,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:48:00,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:00,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:48:00,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:48:00,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:48:00,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 249 transitions, 2780 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 12:48:00,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:00,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:48:00,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:00,692 INFO L124 PetriNetUnfolderBase]: 520/993 cut-off events. [2024-06-14 12:48:00,692 INFO L125 PetriNetUnfolderBase]: For 98706/98706 co-relation queries the response was YES. [2024-06-14 12:48:00,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7398 conditions, 993 events. 520/993 cut-off events. For 98706/98706 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5429 event pairs, 39 based on Foata normal form. 2/993 useless extension candidates. Maximal degree in co-relation 7264. Up to 798 conditions per place. [2024-06-14 12:48:00,701 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 208 selfloop transitions, 57 changer transitions 0/268 dead transitions. [2024-06-14 12:48:00,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 268 transitions, 3400 flow [2024-06-14 12:48:00,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:48:00,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:48:00,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-14 12:48:00,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-14 12:48:00,702 INFO L175 Difference]: Start difference. First operand has 279 places, 249 transitions, 2780 flow. Second operand 11 states and 137 transitions. [2024-06-14 12:48:00,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 268 transitions, 3400 flow [2024-06-14 12:48:00,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 268 transitions, 3285 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-14 12:48:00,977 INFO L231 Difference]: Finished difference. Result has 281 places, 254 transitions, 2841 flow [2024-06-14 12:48:00,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2665, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2841, PETRI_PLACES=281, PETRI_TRANSITIONS=254} [2024-06-14 12:48:00,977 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 250 predicate places. [2024-06-14 12:48:00,977 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 254 transitions, 2841 flow [2024-06-14 12:48:00,978 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 12:48:00,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:00,978 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 12:48:00,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-14 12:48:00,978 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 12:48:00,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:00,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1747219852, now seen corresponding path program 3 times [2024-06-14 12:48:00,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:00,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147455110] [2024-06-14 12:48:00,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:00,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:00,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:02,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:02,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:02,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147455110] [2024-06-14 12:48:02,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147455110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:02,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:02,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:48:02,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344239603] [2024-06-14 12:48:02,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:02,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:48:02,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:02,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:48:02,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:48:02,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:48:02,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 254 transitions, 2841 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 12:48:02,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:02,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:48:02,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:03,123 INFO L124 PetriNetUnfolderBase]: 536/1029 cut-off events. [2024-06-14 12:48:03,123 INFO L125 PetriNetUnfolderBase]: For 131539/131539 co-relation queries the response was YES. [2024-06-14 12:48:03,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7673 conditions, 1029 events. 536/1029 cut-off events. For 131539/131539 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5708 event pairs, 43 based on Foata normal form. 10/1037 useless extension candidates. Maximal degree in co-relation 7538. Up to 851 conditions per place. [2024-06-14 12:48:03,133 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 232 selfloop transitions, 33 changer transitions 4/272 dead transitions. [2024-06-14 12:48:03,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 272 transitions, 3501 flow [2024-06-14 12:48:03,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:48:03,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:48:03,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-14 12:48:03,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-14 12:48:03,134 INFO L175 Difference]: Start difference. First operand has 281 places, 254 transitions, 2841 flow. Second operand 11 states and 138 transitions. [2024-06-14 12:48:03,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 272 transitions, 3501 flow [2024-06-14 12:48:03,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 272 transitions, 3373 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-14 12:48:03,452 INFO L231 Difference]: Finished difference. Result has 284 places, 254 transitions, 2796 flow [2024-06-14 12:48:03,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2713, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2796, PETRI_PLACES=284, PETRI_TRANSITIONS=254} [2024-06-14 12:48:03,452 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 253 predicate places. [2024-06-14 12:48:03,452 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 254 transitions, 2796 flow [2024-06-14 12:48:03,453 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 12:48:03,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:03,453 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 12:48:03,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-14 12:48:03,453 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 12:48:03,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:03,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1940949733, now seen corresponding path program 4 times [2024-06-14 12:48:03,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:03,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125382936] [2024-06-14 12:48:03,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:03,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:03,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:05,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:05,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:05,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125382936] [2024-06-14 12:48:05,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125382936] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:05,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:05,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:48:05,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109283126] [2024-06-14 12:48:05,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:05,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:48:05,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:05,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:48:05,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:48:05,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:48:05,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 254 transitions, 2796 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 12:48:05,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:05,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:48:05,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:05,987 INFO L124 PetriNetUnfolderBase]: 533/1024 cut-off events. [2024-06-14 12:48:05,987 INFO L125 PetriNetUnfolderBase]: For 99700/99700 co-relation queries the response was YES. [2024-06-14 12:48:05,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7579 conditions, 1024 events. 533/1024 cut-off events. For 99700/99700 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5687 event pairs, 43 based on Foata normal form. 1/1023 useless extension candidates. Maximal degree in co-relation 7445. Up to 802 conditions per place. [2024-06-14 12:48:05,996 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 210 selfloop transitions, 59 changer transitions 0/272 dead transitions. [2024-06-14 12:48:05,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 272 transitions, 3444 flow [2024-06-14 12:48:05,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:48:05,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:48:05,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-14 12:48:05,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-14 12:48:05,997 INFO L175 Difference]: Start difference. First operand has 284 places, 254 transitions, 2796 flow. Second operand 11 states and 137 transitions. [2024-06-14 12:48:05,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 272 transitions, 3444 flow [2024-06-14 12:48:06,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 272 transitions, 3365 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-14 12:48:06,324 INFO L231 Difference]: Finished difference. Result has 287 places, 258 transitions, 2952 flow [2024-06-14 12:48:06,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2717, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2952, PETRI_PLACES=287, PETRI_TRANSITIONS=258} [2024-06-14 12:48:06,325 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 256 predicate places. [2024-06-14 12:48:06,325 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 258 transitions, 2952 flow [2024-06-14 12:48:06,325 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 12:48:06,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:06,325 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 12:48:06,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-14 12:48:06,325 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 12:48:06,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:06,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1941159262, now seen corresponding path program 4 times [2024-06-14 12:48:06,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:06,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672541625] [2024-06-14 12:48:06,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:06,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:06,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:07,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:07,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:07,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672541625] [2024-06-14 12:48:07,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672541625] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:07,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:07,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:48:07,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118236892] [2024-06-14 12:48:07,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:07,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:48:07,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:07,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:48:07,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:48:07,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:48:07,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 258 transitions, 2952 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 12:48:07,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:07,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:48:07,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:08,006 INFO L124 PetriNetUnfolderBase]: 537/1032 cut-off events. [2024-06-14 12:48:08,006 INFO L125 PetriNetUnfolderBase]: For 106187/106187 co-relation queries the response was YES. [2024-06-14 12:48:08,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7759 conditions, 1032 events. 537/1032 cut-off events. For 106187/106187 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5750 event pairs, 45 based on Foata normal form. 2/1032 useless extension candidates. Maximal degree in co-relation 7623. Up to 858 conditions per place. [2024-06-14 12:48:08,017 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 227 selfloop transitions, 44 changer transitions 0/274 dead transitions. [2024-06-14 12:48:08,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 274 transitions, 3565 flow [2024-06-14 12:48:08,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:48:08,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:48:08,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-14 12:48:08,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-14 12:48:08,018 INFO L175 Difference]: Start difference. First operand has 287 places, 258 transitions, 2952 flow. Second operand 11 states and 135 transitions. [2024-06-14 12:48:08,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 274 transitions, 3565 flow [2024-06-14 12:48:08,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 274 transitions, 3365 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-14 12:48:08,326 INFO L231 Difference]: Finished difference. Result has 290 places, 260 transitions, 2883 flow [2024-06-14 12:48:08,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2760, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2883, PETRI_PLACES=290, PETRI_TRANSITIONS=260} [2024-06-14 12:48:08,327 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 259 predicate places. [2024-06-14 12:48:08,327 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 260 transitions, 2883 flow [2024-06-14 12:48:08,327 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 12:48:08,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:08,327 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 12:48:08,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-14 12:48:08,327 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 12:48:08,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:08,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1948577872, now seen corresponding path program 5 times [2024-06-14 12:48:08,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:08,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900005748] [2024-06-14 12:48:08,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:08,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:08,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:09,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:09,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:09,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900005748] [2024-06-14 12:48:09,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900005748] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:09,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:09,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:48:09,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630817154] [2024-06-14 12:48:09,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:09,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:48:09,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:09,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:48:09,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:48:09,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:48:09,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 260 transitions, 2883 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 12:48:09,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:09,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:48:09,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:10,290 INFO L124 PetriNetUnfolderBase]: 548/1053 cut-off events. [2024-06-14 12:48:10,290 INFO L125 PetriNetUnfolderBase]: For 116775/116775 co-relation queries the response was YES. [2024-06-14 12:48:10,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8031 conditions, 1053 events. 548/1053 cut-off events. For 116775/116775 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 5874 event pairs, 44 based on Foata normal form. 2/1053 useless extension candidates. Maximal degree in co-relation 7895. Up to 773 conditions per place. [2024-06-14 12:48:10,301 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 213 selfloop transitions, 62 changer transitions 2/280 dead transitions. [2024-06-14 12:48:10,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 280 transitions, 3753 flow [2024-06-14 12:48:10,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:48:10,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:48:10,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-14 12:48:10,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-14 12:48:10,302 INFO L175 Difference]: Start difference. First operand has 290 places, 260 transitions, 2883 flow. Second operand 11 states and 140 transitions. [2024-06-14 12:48:10,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 280 transitions, 3753 flow [2024-06-14 12:48:10,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 280 transitions, 3664 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-14 12:48:10,607 INFO L231 Difference]: Finished difference. Result has 294 places, 262 transitions, 2972 flow [2024-06-14 12:48:10,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2794, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2972, PETRI_PLACES=294, PETRI_TRANSITIONS=262} [2024-06-14 12:48:10,608 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 263 predicate places. [2024-06-14 12:48:10,608 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 262 transitions, 2972 flow [2024-06-14 12:48:10,608 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 12:48:10,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:10,608 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 12:48:10,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-14 12:48:10,608 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 12:48:10,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:10,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1747212133, now seen corresponding path program 5 times [2024-06-14 12:48:10,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:10,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707756788] [2024-06-14 12:48:10,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:10,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:10,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:12,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:12,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:12,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707756788] [2024-06-14 12:48:12,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707756788] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:12,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:12,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:48:12,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152196810] [2024-06-14 12:48:12,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:12,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:48:12,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:12,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:48:12,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:48:12,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:48:12,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 262 transitions, 2972 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 12:48:12,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:12,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:48:12,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:12,766 INFO L124 PetriNetUnfolderBase]: 546/1050 cut-off events. [2024-06-14 12:48:12,767 INFO L125 PetriNetUnfolderBase]: For 110426/110426 co-relation queries the response was YES. [2024-06-14 12:48:12,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7967 conditions, 1050 events. 546/1050 cut-off events. For 110426/110426 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 5860 event pairs, 46 based on Foata normal form. 1/1049 useless extension candidates. Maximal degree in co-relation 7830. Up to 904 conditions per place. [2024-06-14 12:48:12,778 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 235 selfloop transitions, 37 changer transitions 0/275 dead transitions. [2024-06-14 12:48:12,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 275 transitions, 3548 flow [2024-06-14 12:48:12,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:48:12,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:48:12,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-14 12:48:12,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-14 12:48:12,779 INFO L175 Difference]: Start difference. First operand has 294 places, 262 transitions, 2972 flow. Second operand 11 states and 134 transitions. [2024-06-14 12:48:12,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 275 transitions, 3548 flow [2024-06-14 12:48:13,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 275 transitions, 3406 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-14 12:48:13,089 INFO L231 Difference]: Finished difference. Result has 298 places, 262 transitions, 2909 flow [2024-06-14 12:48:13,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2830, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2909, PETRI_PLACES=298, PETRI_TRANSITIONS=262} [2024-06-14 12:48:13,090 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 267 predicate places. [2024-06-14 12:48:13,090 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 262 transitions, 2909 flow [2024-06-14 12:48:13,091 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 12:48:13,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:13,091 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 12:48:13,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-14 12:48:13,091 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 12:48:13,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:13,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1948301383, now seen corresponding path program 6 times [2024-06-14 12:48:13,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:13,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266826105] [2024-06-14 12:48:13,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:13,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:13,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:15,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:15,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:15,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266826105] [2024-06-14 12:48:15,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266826105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:15,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:15,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:48:15,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822816451] [2024-06-14 12:48:15,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:15,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:48:15,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:15,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:48:15,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:48:15,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:48:15,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 262 transitions, 2909 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 12:48:15,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:15,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:48:15,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:16,017 INFO L124 PetriNetUnfolderBase]: 544/1047 cut-off events. [2024-06-14 12:48:16,017 INFO L125 PetriNetUnfolderBase]: For 107724/107724 co-relation queries the response was YES. [2024-06-14 12:48:16,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7811 conditions, 1047 events. 544/1047 cut-off events. For 107724/107724 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 5849 event pairs, 46 based on Foata normal form. 1/1046 useless extension candidates. Maximal degree in co-relation 7672. Up to 849 conditions per place. [2024-06-14 12:48:16,028 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 211 selfloop transitions, 61 changer transitions 0/275 dead transitions. [2024-06-14 12:48:16,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 275 transitions, 3485 flow [2024-06-14 12:48:16,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:48:16,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:48:16,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-14 12:48:16,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-14 12:48:16,029 INFO L175 Difference]: Start difference. First operand has 298 places, 262 transitions, 2909 flow. Second operand 11 states and 135 transitions. [2024-06-14 12:48:16,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 275 transitions, 3485 flow [2024-06-14 12:48:16,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 275 transitions, 3327 flow, removed 24 selfloop flow, removed 11 redundant places. [2024-06-14 12:48:16,404 INFO L231 Difference]: Finished difference. Result has 298 places, 262 transitions, 2878 flow [2024-06-14 12:48:16,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2751, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2878, PETRI_PLACES=298, PETRI_TRANSITIONS=262} [2024-06-14 12:48:16,405 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 267 predicate places. [2024-06-14 12:48:16,405 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 262 transitions, 2878 flow [2024-06-14 12:48:16,405 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 12:48:16,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:16,406 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 12:48:16,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-14 12:48:16,406 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 12:48:16,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:16,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1948309102, now seen corresponding path program 6 times [2024-06-14 12:48:16,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:16,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077194539] [2024-06-14 12:48:16,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:16,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:16,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:18,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:18,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:18,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077194539] [2024-06-14 12:48:18,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077194539] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:18,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:18,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:48:18,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941059890] [2024-06-14 12:48:18,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:18,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:48:18,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:18,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:48:18,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:48:18,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:48:18,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 262 transitions, 2878 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 12:48:18,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:18,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:48:18,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:18,774 INFO L124 PetriNetUnfolderBase]: 541/1042 cut-off events. [2024-06-14 12:48:18,775 INFO L125 PetriNetUnfolderBase]: For 105167/105167 co-relation queries the response was YES. [2024-06-14 12:48:18,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7573 conditions, 1042 events. 541/1042 cut-off events. For 105167/105167 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 5848 event pairs, 45 based on Foata normal form. 2/1042 useless extension candidates. Maximal degree in co-relation 7434. Up to 868 conditions per place. [2024-06-14 12:48:18,785 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 225 selfloop transitions, 48 changer transitions 0/276 dead transitions. [2024-06-14 12:48:18,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 276 transitions, 3458 flow [2024-06-14 12:48:18,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:48:18,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:48:18,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-14 12:48:18,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-14 12:48:18,786 INFO L175 Difference]: Start difference. First operand has 298 places, 262 transitions, 2878 flow. Second operand 11 states and 135 transitions. [2024-06-14 12:48:18,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 276 transitions, 3458 flow [2024-06-14 12:48:19,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 276 transitions, 3351 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-14 12:48:19,280 INFO L231 Difference]: Finished difference. Result has 301 places, 262 transitions, 2871 flow [2024-06-14 12:48:19,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2771, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2871, PETRI_PLACES=301, PETRI_TRANSITIONS=262} [2024-06-14 12:48:19,280 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 270 predicate places. [2024-06-14 12:48:19,281 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 262 transitions, 2871 flow [2024-06-14 12:48:19,281 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 12:48:19,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:19,281 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 12:48:19,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-14 12:48:19,281 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 12:48:19,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:19,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1941151543, now seen corresponding path program 7 times [2024-06-14 12:48:19,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:19,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634945844] [2024-06-14 12:48:19,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:19,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:19,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:20,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:20,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:20,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634945844] [2024-06-14 12:48:20,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634945844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:20,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:20,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:48:20,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876355874] [2024-06-14 12:48:20,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:20,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:48:20,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:20,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:48:20,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:48:20,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:48:20,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 262 transitions, 2871 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 12:48:20,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:20,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:48:20,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:21,313 INFO L124 PetriNetUnfolderBase]: 539/1039 cut-off events. [2024-06-14 12:48:21,313 INFO L125 PetriNetUnfolderBase]: For 97918/97918 co-relation queries the response was YES. [2024-06-14 12:48:21,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7452 conditions, 1039 events. 539/1039 cut-off events. For 97918/97918 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 5830 event pairs, 45 based on Foata normal form. 1/1038 useless extension candidates. Maximal degree in co-relation 7312. Up to 841 conditions per place. [2024-06-14 12:48:21,325 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 217 selfloop transitions, 55 changer transitions 0/275 dead transitions. [2024-06-14 12:48:21,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 275 transitions, 3447 flow [2024-06-14 12:48:21,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:48:21,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:48:21,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-14 12:48:21,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-14 12:48:21,326 INFO L175 Difference]: Start difference. First operand has 301 places, 262 transitions, 2871 flow. Second operand 11 states and 137 transitions. [2024-06-14 12:48:21,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 275 transitions, 3447 flow [2024-06-14 12:48:21,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 275 transitions, 3282 flow, removed 27 selfloop flow, removed 10 redundant places. [2024-06-14 12:48:21,679 INFO L231 Difference]: Finished difference. Result has 302 places, 262 transitions, 2821 flow [2024-06-14 12:48:21,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2706, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2821, PETRI_PLACES=302, PETRI_TRANSITIONS=262} [2024-06-14 12:48:21,680 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 271 predicate places. [2024-06-14 12:48:21,680 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 262 transitions, 2821 flow [2024-06-14 12:48:21,680 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 12:48:21,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:21,681 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 12:48:21,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-14 12:48:21,681 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 12:48:21,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:21,681 INFO L85 PathProgramCache]: Analyzing trace with hash -434259035, now seen corresponding path program 11 times [2024-06-14 12:48:21,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:21,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506714628] [2024-06-14 12:48:21,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:21,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:21,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:22,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:22,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:22,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506714628] [2024-06-14 12:48:22,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506714628] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:22,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:22,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:48:22,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927597084] [2024-06-14 12:48:22,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:22,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:48:22,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:22,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:48:22,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:48:23,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:48:23,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 262 transitions, 2821 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 12:48:23,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:23,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:48:23,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:23,469 INFO L124 PetriNetUnfolderBase]: 543/1048 cut-off events. [2024-06-14 12:48:23,469 INFO L125 PetriNetUnfolderBase]: For 105132/105135 co-relation queries the response was YES. [2024-06-14 12:48:23,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7507 conditions, 1048 events. 543/1048 cut-off events. For 105132/105135 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 5890 event pairs, 51 based on Foata normal form. 2/1045 useless extension candidates. Maximal degree in co-relation 7366. Up to 889 conditions per place. [2024-06-14 12:48:23,477 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 233 selfloop transitions, 38 changer transitions 0/274 dead transitions. [2024-06-14 12:48:23,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 274 transitions, 3435 flow [2024-06-14 12:48:23,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:48:23,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:48:23,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-14 12:48:23,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-14 12:48:23,478 INFO L175 Difference]: Start difference. First operand has 302 places, 262 transitions, 2821 flow. Second operand 10 states and 124 transitions. [2024-06-14 12:48:23,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 274 transitions, 3435 flow [2024-06-14 12:48:23,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 274 transitions, 3284 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 12:48:23,870 INFO L231 Difference]: Finished difference. Result has 301 places, 263 transitions, 2798 flow [2024-06-14 12:48:23,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2670, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2798, PETRI_PLACES=301, PETRI_TRANSITIONS=263} [2024-06-14 12:48:23,870 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 270 predicate places. [2024-06-14 12:48:23,871 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 263 transitions, 2798 flow [2024-06-14 12:48:23,871 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 12:48:23,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:23,871 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 12:48:23,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-14 12:48:23,871 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 12:48:23,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:23,871 INFO L85 PathProgramCache]: Analyzing trace with hash -633560825, now seen corresponding path program 12 times [2024-06-14 12:48:23,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:23,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185592040] [2024-06-14 12:48:23,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:23,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:23,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:25,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:25,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:25,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185592040] [2024-06-14 12:48:25,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185592040] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:25,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:25,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:48:25,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073603282] [2024-06-14 12:48:25,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:25,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:48:25,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:25,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:48:25,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:48:25,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:48:25,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 263 transitions, 2798 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 12:48:25,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:25,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:48:25,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:25,829 INFO L124 PetriNetUnfolderBase]: 547/1056 cut-off events. [2024-06-14 12:48:25,829 INFO L125 PetriNetUnfolderBase]: For 107992/107995 co-relation queries the response was YES. [2024-06-14 12:48:25,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7582 conditions, 1056 events. 547/1056 cut-off events. For 107992/107995 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 5951 event pairs, 53 based on Foata normal form. 2/1053 useless extension candidates. Maximal degree in co-relation 7440. Up to 912 conditions per place. [2024-06-14 12:48:25,840 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 241 selfloop transitions, 32 changer transitions 0/276 dead transitions. [2024-06-14 12:48:25,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 276 transitions, 3430 flow [2024-06-14 12:48:25,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:48:25,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:48:25,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-14 12:48:25,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 12:48:25,841 INFO L175 Difference]: Start difference. First operand has 301 places, 263 transitions, 2798 flow. Second operand 10 states and 120 transitions. [2024-06-14 12:48:25,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 276 transitions, 3430 flow [2024-06-14 12:48:26,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 276 transitions, 3310 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-14 12:48:26,227 INFO L231 Difference]: Finished difference. Result has 304 places, 265 transitions, 2813 flow [2024-06-14 12:48:26,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2680, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2813, PETRI_PLACES=304, PETRI_TRANSITIONS=265} [2024-06-14 12:48:26,227 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 273 predicate places. [2024-06-14 12:48:26,227 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 265 transitions, 2813 flow [2024-06-14 12:48:26,227 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 12:48:26,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:26,228 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 12:48:26,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-14 12:48:26,228 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 12:48:26,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:26,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1437620577, now seen corresponding path program 13 times [2024-06-14 12:48:26,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:26,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344042631] [2024-06-14 12:48:26,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:26,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:26,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:27,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:27,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:27,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344042631] [2024-06-14 12:48:27,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344042631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:27,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:27,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:48:27,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439540064] [2024-06-14 12:48:27,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:27,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:48:27,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:27,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:48:27,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:48:27,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:48:27,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 265 transitions, 2813 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 12:48:27,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:27,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:48:27,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:27,840 INFO L124 PetriNetUnfolderBase]: 551/1064 cut-off events. [2024-06-14 12:48:27,841 INFO L125 PetriNetUnfolderBase]: For 110297/110300 co-relation queries the response was YES. [2024-06-14 12:48:27,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7631 conditions, 1064 events. 551/1064 cut-off events. For 110297/110300 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6001 event pairs, 51 based on Foata normal form. 2/1061 useless extension candidates. Maximal degree in co-relation 7487. Up to 915 conditions per place. [2024-06-14 12:48:27,851 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 244 selfloop transitions, 31 changer transitions 0/278 dead transitions. [2024-06-14 12:48:27,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 278 transitions, 3441 flow [2024-06-14 12:48:27,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:48:27,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:48:27,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-14 12:48:27,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 12:48:27,852 INFO L175 Difference]: Start difference. First operand has 304 places, 265 transitions, 2813 flow. Second operand 10 states and 120 transitions. [2024-06-14 12:48:27,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 278 transitions, 3441 flow [2024-06-14 12:48:28,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 278 transitions, 3336 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-14 12:48:28,262 INFO L231 Difference]: Finished difference. Result has 307 places, 266 transitions, 2826 flow [2024-06-14 12:48:28,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2708, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2826, PETRI_PLACES=307, PETRI_TRANSITIONS=266} [2024-06-14 12:48:28,263 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 276 predicate places. [2024-06-14 12:48:28,263 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 266 transitions, 2826 flow [2024-06-14 12:48:28,263 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 12:48:28,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:28,264 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 12:48:28,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-14 12:48:28,264 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 12:48:28,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:28,264 INFO L85 PathProgramCache]: Analyzing trace with hash -628198445, now seen corresponding path program 14 times [2024-06-14 12:48:28,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:28,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840960361] [2024-06-14 12:48:28,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:28,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:28,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:29,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:29,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:29,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840960361] [2024-06-14 12:48:29,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840960361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:29,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:29,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:48:29,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264223803] [2024-06-14 12:48:29,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:29,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:48:29,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:29,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:48:29,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:48:29,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:48:29,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 266 transitions, 2826 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 12:48:29,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:29,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:48:29,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:30,086 INFO L124 PetriNetUnfolderBase]: 555/1072 cut-off events. [2024-06-14 12:48:30,086 INFO L125 PetriNetUnfolderBase]: For 112801/112804 co-relation queries the response was YES. [2024-06-14 12:48:30,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7689 conditions, 1072 events. 555/1072 cut-off events. For 112801/112804 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 6085 event pairs, 53 based on Foata normal form. 2/1069 useless extension candidates. Maximal degree in co-relation 7544. Up to 922 conditions per place. [2024-06-14 12:48:30,097 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 240 selfloop transitions, 35 changer transitions 0/278 dead transitions. [2024-06-14 12:48:30,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 278 transitions, 3454 flow [2024-06-14 12:48:30,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:48:30,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:48:30,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-14 12:48:30,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-14 12:48:30,098 INFO L175 Difference]: Start difference. First operand has 307 places, 266 transitions, 2826 flow. Second operand 10 states and 122 transitions. [2024-06-14 12:48:30,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 278 transitions, 3454 flow [2024-06-14 12:48:30,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 278 transitions, 3346 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-14 12:48:30,668 INFO L231 Difference]: Finished difference. Result has 309 places, 267 transitions, 2846 flow [2024-06-14 12:48:30,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2718, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2846, PETRI_PLACES=309, PETRI_TRANSITIONS=267} [2024-06-14 12:48:30,669 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 278 predicate places. [2024-06-14 12:48:30,669 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 267 transitions, 2846 flow [2024-06-14 12:48:30,670 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 12:48:30,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:30,670 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 12:48:30,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-14 12:48:30,670 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 12:48:30,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:30,671 INFO L85 PathProgramCache]: Analyzing trace with hash -81868115, now seen corresponding path program 15 times [2024-06-14 12:48:30,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:30,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519397012] [2024-06-14 12:48:30,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:30,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:30,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:32,181 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 12:48:32,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:32,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519397012] [2024-06-14 12:48:32,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519397012] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:32,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:32,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:48:32,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894058496] [2024-06-14 12:48:32,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:32,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:48:32,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:32,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:48:32,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:48:32,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:48:32,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 267 transitions, 2846 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 12:48:32,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:32,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:48:32,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:32,623 INFO L124 PetriNetUnfolderBase]: 552/1067 cut-off events. [2024-06-14 12:48:32,623 INFO L125 PetriNetUnfolderBase]: For 103667/103670 co-relation queries the response was YES. [2024-06-14 12:48:32,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7369 conditions, 1067 events. 552/1067 cut-off events. For 103667/103670 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 6029 event pairs, 54 based on Foata normal form. 2/1064 useless extension candidates. Maximal degree in co-relation 7223. Up to 865 conditions per place. [2024-06-14 12:48:32,633 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 217 selfloop transitions, 58 changer transitions 0/278 dead transitions. [2024-06-14 12:48:32,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 278 transitions, 3422 flow [2024-06-14 12:48:32,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:48:32,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:48:32,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-14 12:48:32,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-14 12:48:32,636 INFO L175 Difference]: Start difference. First operand has 309 places, 267 transitions, 2846 flow. Second operand 10 states and 123 transitions. [2024-06-14 12:48:32,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 278 transitions, 3422 flow [2024-06-14 12:48:33,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 278 transitions, 3304 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-14 12:48:33,015 INFO L231 Difference]: Finished difference. Result has 311 places, 267 transitions, 2848 flow [2024-06-14 12:48:33,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2728, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2848, PETRI_PLACES=311, PETRI_TRANSITIONS=267} [2024-06-14 12:48:33,016 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 280 predicate places. [2024-06-14 12:48:33,016 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 267 transitions, 2848 flow [2024-06-14 12:48:33,016 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 12:48:33,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:33,016 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 12:48:33,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-14 12:48:33,016 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 12:48:33,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:33,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1505390672, now seen corresponding path program 7 times [2024-06-14 12:48:33,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:33,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427759159] [2024-06-14 12:48:33,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:33,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:33,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:34,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:34,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:34,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427759159] [2024-06-14 12:48:34,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427759159] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:34,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:34,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:48:34,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636127357] [2024-06-14 12:48:34,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:34,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:48:34,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:34,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:48:34,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:48:34,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:48:34,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 267 transitions, 2848 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 12:48:34,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:34,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:48:34,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:34,946 INFO L124 PetriNetUnfolderBase]: 566/1094 cut-off events. [2024-06-14 12:48:34,946 INFO L125 PetriNetUnfolderBase]: For 115400/115400 co-relation queries the response was YES. [2024-06-14 12:48:34,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7730 conditions, 1094 events. 566/1094 cut-off events. For 115400/115400 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6254 event pairs, 49 based on Foata normal form. 2/1094 useless extension candidates. Maximal degree in co-relation 7583. Up to 976 conditions per place. [2024-06-14 12:48:34,958 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 263 selfloop transitions, 19 changer transitions 0/285 dead transitions. [2024-06-14 12:48:34,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 285 transitions, 3717 flow [2024-06-14 12:48:34,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:48:34,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:48:34,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-14 12:48:34,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-14 12:48:34,959 INFO L175 Difference]: Start difference. First operand has 311 places, 267 transitions, 2848 flow. Second operand 11 states and 129 transitions. [2024-06-14 12:48:34,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 285 transitions, 3717 flow [2024-06-14 12:48:35,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 285 transitions, 3469 flow, removed 26 selfloop flow, removed 10 redundant places. [2024-06-14 12:48:35,362 INFO L231 Difference]: Finished difference. Result has 313 places, 271 transitions, 2722 flow [2024-06-14 12:48:35,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2600, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2722, PETRI_PLACES=313, PETRI_TRANSITIONS=271} [2024-06-14 12:48:35,362 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 282 predicate places. [2024-06-14 12:48:35,362 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 271 transitions, 2722 flow [2024-06-14 12:48:35,362 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 12:48:35,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:35,362 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 12:48:35,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-14 12:48:35,363 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 12:48:35,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:35,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1842947709, now seen corresponding path program 8 times [2024-06-14 12:48:35,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:35,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835582108] [2024-06-14 12:48:35,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:35,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:35,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:36,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:36,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:36,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835582108] [2024-06-14 12:48:36,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835582108] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:36,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:36,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:48:36,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064668899] [2024-06-14 12:48:36,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:36,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:48:36,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:36,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:48:36,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:48:36,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:48:36,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 271 transitions, 2722 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 12:48:36,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:36,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:48:36,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:37,207 INFO L124 PetriNetUnfolderBase]: 572/1105 cut-off events. [2024-06-14 12:48:37,208 INFO L125 PetriNetUnfolderBase]: For 111126/111129 co-relation queries the response was YES. [2024-06-14 12:48:37,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7568 conditions, 1105 events. 572/1105 cut-off events. For 111126/111129 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 6325 event pairs, 59 based on Foata normal form. 1/1099 useless extension candidates. Maximal degree in co-relation 7420. Up to 858 conditions per place. [2024-06-14 12:48:37,220 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 215 selfloop transitions, 70 changer transitions 0/288 dead transitions. [2024-06-14 12:48:37,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 288 transitions, 3602 flow [2024-06-14 12:48:37,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:48:37,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:48:37,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-14 12:48:37,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-14 12:48:37,221 INFO L175 Difference]: Start difference. First operand has 313 places, 271 transitions, 2722 flow. Second operand 11 states and 140 transitions. [2024-06-14 12:48:37,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 288 transitions, 3602 flow [2024-06-14 12:48:37,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 288 transitions, 3501 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-14 12:48:37,632 INFO L231 Difference]: Finished difference. Result has 318 places, 275 transitions, 2837 flow [2024-06-14 12:48:37,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2623, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2837, PETRI_PLACES=318, PETRI_TRANSITIONS=275} [2024-06-14 12:48:37,632 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 287 predicate places. [2024-06-14 12:48:37,633 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 275 transitions, 2837 flow [2024-06-14 12:48:37,633 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 12:48:37,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:37,633 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 12:48:37,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-14 12:48:37,633 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 12:48:37,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:37,634 INFO L85 PathProgramCache]: Analyzing trace with hash -426634244, now seen corresponding path program 8 times [2024-06-14 12:48:37,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:37,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817544346] [2024-06-14 12:48:37,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:37,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:37,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:38,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:38,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:38,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817544346] [2024-06-14 12:48:38,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817544346] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:38,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:38,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:48:38,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276624371] [2024-06-14 12:48:38,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:38,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:48:38,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:38,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:48:38,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:48:39,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:48:39,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 275 transitions, 2837 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 12:48:39,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:39,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:48:39,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:39,611 INFO L124 PetriNetUnfolderBase]: 576/1115 cut-off events. [2024-06-14 12:48:39,611 INFO L125 PetriNetUnfolderBase]: For 118172/118175 co-relation queries the response was YES. [2024-06-14 12:48:39,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7607 conditions, 1115 events. 576/1115 cut-off events. For 118172/118175 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 6381 event pairs, 55 based on Foata normal form. 2/1112 useless extension candidates. Maximal degree in co-relation 7458. Up to 925 conditions per place. [2024-06-14 12:48:39,628 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 232 selfloop transitions, 54 changer transitions 0/289 dead transitions. [2024-06-14 12:48:39,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 289 transitions, 3475 flow [2024-06-14 12:48:39,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:48:39,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:48:39,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-14 12:48:39,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-14 12:48:39,630 INFO L175 Difference]: Start difference. First operand has 318 places, 275 transitions, 2837 flow. Second operand 11 states and 138 transitions. [2024-06-14 12:48:39,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 289 transitions, 3475 flow [2024-06-14 12:48:40,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 289 transitions, 3284 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-14 12:48:40,114 INFO L231 Difference]: Finished difference. Result has 320 places, 277 transitions, 2798 flow [2024-06-14 12:48:40,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2646, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2798, PETRI_PLACES=320, PETRI_TRANSITIONS=277} [2024-06-14 12:48:40,114 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 289 predicate places. [2024-06-14 12:48:40,114 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 277 transitions, 2798 flow [2024-06-14 12:48:40,115 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 12:48:40,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:40,115 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 12:48:40,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-14 12:48:40,115 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 12:48:40,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:40,116 INFO L85 PathProgramCache]: Analyzing trace with hash 2141985390, now seen corresponding path program 9 times [2024-06-14 12:48:40,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:40,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524289267] [2024-06-14 12:48:40,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:40,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:40,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:41,544 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 12:48:41,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:41,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524289267] [2024-06-14 12:48:41,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524289267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:41,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:41,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:48:41,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908549827] [2024-06-14 12:48:41,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:41,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:48:41,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:41,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:48:41,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:48:41,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:48:41,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 277 transitions, 2798 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 12:48:41,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:41,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:48:41,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:42,110 INFO L124 PetriNetUnfolderBase]: 580/1123 cut-off events. [2024-06-14 12:48:42,111 INFO L125 PetriNetUnfolderBase]: For 120409/120412 co-relation queries the response was YES. [2024-06-14 12:48:42,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7598 conditions, 1123 events. 580/1123 cut-off events. For 120409/120412 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 6432 event pairs, 55 based on Foata normal form. 2/1120 useless extension candidates. Maximal degree in co-relation 7450. Up to 878 conditions per place. [2024-06-14 12:48:42,127 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 215 selfloop transitions, 72 changer transitions 0/290 dead transitions. [2024-06-14 12:48:42,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 290 transitions, 3430 flow [2024-06-14 12:48:42,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:48:42,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:48:42,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-14 12:48:42,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-14 12:48:42,128 INFO L175 Difference]: Start difference. First operand has 320 places, 277 transitions, 2798 flow. Second operand 11 states and 136 transitions. [2024-06-14 12:48:42,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 290 transitions, 3430 flow [2024-06-14 12:48:42,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 290 transitions, 3261 flow, removed 21 selfloop flow, removed 11 redundant places. [2024-06-14 12:48:42,534 INFO L231 Difference]: Finished difference. Result has 320 places, 278 transitions, 2809 flow [2024-06-14 12:48:42,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2629, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2809, PETRI_PLACES=320, PETRI_TRANSITIONS=278} [2024-06-14 12:48:42,535 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 289 predicate places. [2024-06-14 12:48:42,535 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 278 transitions, 2809 flow [2024-06-14 12:48:42,535 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 12:48:42,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:42,535 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 12:48:42,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-14 12:48:42,535 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 12:48:42,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:42,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1249810405, now seen corresponding path program 9 times [2024-06-14 12:48:42,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:42,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265974299] [2024-06-14 12:48:42,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:42,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:42,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:44,038 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 12:48:44,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:44,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265974299] [2024-06-14 12:48:44,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265974299] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:44,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:44,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:48:44,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436937458] [2024-06-14 12:48:44,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:44,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:48:44,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:44,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:48:44,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:48:44,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:48:44,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 278 transitions, 2809 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 12:48:44,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:44,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:48:44,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:44,549 INFO L124 PetriNetUnfolderBase]: 588/1134 cut-off events. [2024-06-14 12:48:44,549 INFO L125 PetriNetUnfolderBase]: For 122815/122818 co-relation queries the response was YES. [2024-06-14 12:48:44,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7772 conditions, 1134 events. 588/1134 cut-off events. For 122815/122818 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 6523 event pairs, 59 based on Foata normal form. 1/1128 useless extension candidates. Maximal degree in co-relation 7627. Up to 798 conditions per place. [2024-06-14 12:48:44,561 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 189 selfloop transitions, 102 changer transitions 0/294 dead transitions. [2024-06-14 12:48:44,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 294 transitions, 3751 flow [2024-06-14 12:48:44,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:48:44,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:48:44,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-14 12:48:44,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-14 12:48:44,562 INFO L175 Difference]: Start difference. First operand has 320 places, 278 transitions, 2809 flow. Second operand 11 states and 141 transitions. [2024-06-14 12:48:44,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 294 transitions, 3751 flow [2024-06-14 12:48:44,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 294 transitions, 3574 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-14 12:48:44,995 INFO L231 Difference]: Finished difference. Result has 322 places, 282 transitions, 2965 flow [2024-06-14 12:48:44,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2632, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2965, PETRI_PLACES=322, PETRI_TRANSITIONS=282} [2024-06-14 12:48:44,995 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 291 predicate places. [2024-06-14 12:48:44,995 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 282 transitions, 2965 flow [2024-06-14 12:48:44,995 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 12:48:44,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:44,995 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 12:48:44,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-14 12:48:44,996 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 12:48:44,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:44,996 INFO L85 PathProgramCache]: Analyzing trace with hash -426893714, now seen corresponding path program 10 times [2024-06-14 12:48:44,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:44,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387214190] [2024-06-14 12:48:44,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:44,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:45,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:46,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:46,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:46,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387214190] [2024-06-14 12:48:46,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387214190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:46,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:46,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:48:46,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685283340] [2024-06-14 12:48:46,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:46,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:48:46,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:46,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:48:46,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:48:46,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:48:46,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 282 transitions, 2965 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 12:48:46,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:46,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:48:46,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:46,796 INFO L124 PetriNetUnfolderBase]: 592/1144 cut-off events. [2024-06-14 12:48:46,796 INFO L125 PetriNetUnfolderBase]: For 131360/131363 co-relation queries the response was YES. [2024-06-14 12:48:46,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7901 conditions, 1144 events. 592/1144 cut-off events. For 131360/131363 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 6584 event pairs, 55 based on Foata normal form. 2/1141 useless extension candidates. Maximal degree in co-relation 7755. Up to 969 conditions per place. [2024-06-14 12:48:46,807 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 246 selfloop transitions, 46 changer transitions 0/295 dead transitions. [2024-06-14 12:48:46,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 295 transitions, 3609 flow [2024-06-14 12:48:46,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:48:46,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:48:46,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-14 12:48:46,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-14 12:48:46,808 INFO L175 Difference]: Start difference. First operand has 322 places, 282 transitions, 2965 flow. Second operand 11 states and 136 transitions. [2024-06-14 12:48:46,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 295 transitions, 3609 flow [2024-06-14 12:48:47,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 295 transitions, 3414 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-14 12:48:47,267 INFO L231 Difference]: Finished difference. Result has 326 places, 283 transitions, 2900 flow [2024-06-14 12:48:47,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2770, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2900, PETRI_PLACES=326, PETRI_TRANSITIONS=283} [2024-06-14 12:48:47,268 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 295 predicate places. [2024-06-14 12:48:47,268 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 283 transitions, 2900 flow [2024-06-14 12:48:47,268 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 12:48:47,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:47,268 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 12:48:47,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-14 12:48:47,268 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 12:48:47,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:47,268 INFO L85 PathProgramCache]: Analyzing trace with hash -2145839785, now seen corresponding path program 10 times [2024-06-14 12:48:47,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:47,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587674235] [2024-06-14 12:48:47,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:47,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:47,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:48,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:48:48,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:48,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587674235] [2024-06-14 12:48:48,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587674235] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:48,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:48,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:48:48,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223891204] [2024-06-14 12:48:48,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:48,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:48:48,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:48,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:48:48,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:48:49,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:48:49,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 283 transitions, 2900 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 12:48:49,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:49,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:48:49,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:49,515 INFO L124 PetriNetUnfolderBase]: 595/1151 cut-off events. [2024-06-14 12:48:49,515 INFO L125 PetriNetUnfolderBase]: For 127282/127285 co-relation queries the response was YES. [2024-06-14 12:48:49,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7970 conditions, 1151 events. 595/1151 cut-off events. For 127282/127285 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 6654 event pairs, 57 based on Foata normal form. 1/1147 useless extension candidates. Maximal degree in co-relation 7822. Up to 844 conditions per place. [2024-06-14 12:48:49,527 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 199 selfloop transitions, 94 changer transitions 0/296 dead transitions. [2024-06-14 12:48:49,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 296 transitions, 3576 flow [2024-06-14 12:48:49,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:48:49,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:48:49,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-14 12:48:49,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39488636363636365 [2024-06-14 12:48:49,528 INFO L175 Difference]: Start difference. First operand has 326 places, 283 transitions, 2900 flow. Second operand 11 states and 139 transitions. [2024-06-14 12:48:49,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 296 transitions, 3576 flow [2024-06-14 12:48:50,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 296 transitions, 3451 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-14 12:48:50,010 INFO L231 Difference]: Finished difference. Result has 328 places, 285 transitions, 3036 flow [2024-06-14 12:48:50,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2775, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3036, PETRI_PLACES=328, PETRI_TRANSITIONS=285} [2024-06-14 12:48:50,010 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 297 predicate places. [2024-06-14 12:48:50,010 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 285 transitions, 3036 flow [2024-06-14 12:48:50,010 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 12:48:50,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:50,011 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 12:48:50,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-14 12:48:50,011 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 12:48:50,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:50,011 INFO L85 PathProgramCache]: Analyzing trace with hash -426893993, now seen corresponding path program 11 times [2024-06-14 12:48:50,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:50,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566817455] [2024-06-14 12:48:50,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:50,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:50,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:51,363 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 12:48:51,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:51,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566817455] [2024-06-14 12:48:51,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566817455] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:51,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:51,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:48:51,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984026314] [2024-06-14 12:48:51,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:51,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:48:51,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:51,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:48:51,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:48:51,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:48:51,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 285 transitions, 3036 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 12:48:51,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:51,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:48:51,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:52,014 INFO L124 PetriNetUnfolderBase]: 603/1164 cut-off events. [2024-06-14 12:48:52,014 INFO L125 PetriNetUnfolderBase]: For 136042/136045 co-relation queries the response was YES. [2024-06-14 12:48:52,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8302 conditions, 1164 events. 603/1164 cut-off events. For 136042/136045 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 6759 event pairs, 59 based on Foata normal form. 1/1158 useless extension candidates. Maximal degree in co-relation 8153. Up to 947 conditions per place. [2024-06-14 12:48:52,027 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 239 selfloop transitions, 59 changer transitions 0/301 dead transitions. [2024-06-14 12:48:52,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 301 transitions, 3976 flow [2024-06-14 12:48:52,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:48:52,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:48:52,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-14 12:48:52,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-14 12:48:52,028 INFO L175 Difference]: Start difference. First operand has 328 places, 285 transitions, 3036 flow. Second operand 11 states and 140 transitions. [2024-06-14 12:48:52,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 301 transitions, 3976 flow [2024-06-14 12:48:52,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 301 transitions, 3731 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-14 12:48:52,544 INFO L231 Difference]: Finished difference. Result has 331 places, 289 transitions, 3026 flow [2024-06-14 12:48:52,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2791, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3026, PETRI_PLACES=331, PETRI_TRANSITIONS=289} [2024-06-14 12:48:52,545 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 300 predicate places. [2024-06-14 12:48:52,545 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 289 transitions, 3026 flow [2024-06-14 12:48:52,545 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 12:48:52,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:52,545 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 12:48:52,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-14 12:48:52,546 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 12:48:52,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:52,546 INFO L85 PathProgramCache]: Analyzing trace with hash -2145572596, now seen corresponding path program 11 times [2024-06-14 12:48:52,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:52,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435358298] [2024-06-14 12:48:52,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:52,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:52,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:53,827 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 12:48:53,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:53,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435358298] [2024-06-14 12:48:53,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435358298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:53,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:53,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:48:53,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708936361] [2024-06-14 12:48:53,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:53,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:48:53,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:53,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:48:53,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:48:53,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:48:53,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 289 transitions, 3026 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 12:48:53,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:53,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:48:53,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:54,419 INFO L124 PetriNetUnfolderBase]: 610/1179 cut-off events. [2024-06-14 12:48:54,420 INFO L125 PetriNetUnfolderBase]: For 144414/144417 co-relation queries the response was YES. [2024-06-14 12:48:54,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8321 conditions, 1179 events. 610/1179 cut-off events. For 144414/144417 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 6853 event pairs, 57 based on Foata normal form. 2/1176 useless extension candidates. Maximal degree in co-relation 8170. Up to 921 conditions per place. [2024-06-14 12:48:54,432 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 225 selfloop transitions, 76 changer transitions 0/304 dead transitions. [2024-06-14 12:48:54,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 304 transitions, 3702 flow [2024-06-14 12:48:54,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:48:54,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:48:54,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-14 12:48:54,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-14 12:48:54,433 INFO L175 Difference]: Start difference. First operand has 331 places, 289 transitions, 3026 flow. Second operand 11 states and 138 transitions. [2024-06-14 12:48:54,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 304 transitions, 3702 flow [2024-06-14 12:48:54,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 304 transitions, 3555 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-14 12:48:54,900 INFO L231 Difference]: Finished difference. Result has 334 places, 292 transitions, 3083 flow [2024-06-14 12:48:54,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2879, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3083, PETRI_PLACES=334, PETRI_TRANSITIONS=292} [2024-06-14 12:48:54,900 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 303 predicate places. [2024-06-14 12:48:54,900 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 292 transitions, 3083 flow [2024-06-14 12:48:54,900 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 12:48:54,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:54,900 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 12:48:54,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-14 12:48:54,901 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 12:48:54,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:54,901 INFO L85 PathProgramCache]: Analyzing trace with hash -426901433, now seen corresponding path program 12 times [2024-06-14 12:48:54,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:54,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917210164] [2024-06-14 12:48:54,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:54,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:54,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:56,547 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 12:48:56,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:56,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917210164] [2024-06-14 12:48:56,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917210164] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:56,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:56,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:48:56,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098477123] [2024-06-14 12:48:56,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:56,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:48:56,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:56,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:48:56,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:48:56,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:48:56,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 292 transitions, 3083 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 12:48:56,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:56,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:48:56,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:48:57,250 INFO L124 PetriNetUnfolderBase]: 608/1176 cut-off events. [2024-06-14 12:48:57,251 INFO L125 PetriNetUnfolderBase]: For 134446/134449 co-relation queries the response was YES. [2024-06-14 12:48:57,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8220 conditions, 1176 events. 608/1176 cut-off events. For 134446/134449 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 6814 event pairs, 57 based on Foata normal form. 1/1172 useless extension candidates. Maximal degree in co-relation 8068. Up to 939 conditions per place. [2024-06-14 12:48:57,266 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 233 selfloop transitions, 68 changer transitions 0/304 dead transitions. [2024-06-14 12:48:57,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 304 transitions, 3935 flow [2024-06-14 12:48:57,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:48:57,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:48:57,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-14 12:48:57,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-14 12:48:57,267 INFO L175 Difference]: Start difference. First operand has 334 places, 292 transitions, 3083 flow. Second operand 11 states and 140 transitions. [2024-06-14 12:48:57,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 304 transitions, 3935 flow [2024-06-14 12:48:57,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 304 transitions, 3720 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-06-14 12:48:57,800 INFO L231 Difference]: Finished difference. Result has 337 places, 292 transitions, 3009 flow [2024-06-14 12:48:57,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2868, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3009, PETRI_PLACES=337, PETRI_TRANSITIONS=292} [2024-06-14 12:48:57,801 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 306 predicate places. [2024-06-14 12:48:57,801 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 292 transitions, 3009 flow [2024-06-14 12:48:57,801 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 12:48:57,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:48:57,802 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 12:48:57,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-14 12:48:57,802 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 12:48:57,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:48:57,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1249601155, now seen corresponding path program 13 times [2024-06-14 12:48:57,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:48:57,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977271404] [2024-06-14 12:48:57,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:48:57,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:48:57,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:48:59,847 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 12:48:59,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:48:59,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977271404] [2024-06-14 12:48:59,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977271404] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:48:59,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:48:59,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:48:59,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987004225] [2024-06-14 12:48:59,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:48:59,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:48:59,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:48:59,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:48:59,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:48:59,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:48:59,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 292 transitions, 3009 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 12:48:59,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:48:59,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:48:59,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:00,517 INFO L124 PetriNetUnfolderBase]: 611/1179 cut-off events. [2024-06-14 12:49:00,517 INFO L125 PetriNetUnfolderBase]: For 136366/136369 co-relation queries the response was YES. [2024-06-14 12:49:00,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8180 conditions, 1179 events. 611/1179 cut-off events. For 136366/136369 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 6888 event pairs, 61 based on Foata normal form. 1/1173 useless extension candidates. Maximal degree in co-relation 8028. Up to 848 conditions per place. [2024-06-14 12:49:00,532 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 201 selfloop transitions, 101 changer transitions 0/305 dead transitions. [2024-06-14 12:49:00,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 305 transitions, 3687 flow [2024-06-14 12:49:00,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:49:00,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:49:00,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-14 12:49:00,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-14 12:49:00,533 INFO L175 Difference]: Start difference. First operand has 337 places, 292 transitions, 3009 flow. Second operand 11 states and 138 transitions. [2024-06-14 12:49:00,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 305 transitions, 3687 flow [2024-06-14 12:49:01,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 305 transitions, 3561 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 12:49:01,075 INFO L231 Difference]: Finished difference. Result has 338 places, 294 transitions, 3142 flow [2024-06-14 12:49:01,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2883, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3142, PETRI_PLACES=338, PETRI_TRANSITIONS=294} [2024-06-14 12:49:01,075 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 307 predicate places. [2024-06-14 12:49:01,075 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 294 transitions, 3142 flow [2024-06-14 12:49:01,076 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 12:49:01,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:01,076 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 12:49:01,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-14 12:49:01,076 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 12:49:01,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:01,076 INFO L85 PathProgramCache]: Analyzing trace with hash -426624944, now seen corresponding path program 12 times [2024-06-14 12:49:01,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:01,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16701945] [2024-06-14 12:49:01,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:01,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:01,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:02,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:02,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:02,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16701945] [2024-06-14 12:49:02,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16701945] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:02,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:02,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:49:02,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254850938] [2024-06-14 12:49:02,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:02,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:49:02,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:02,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:49:02,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:49:02,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:49:02,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 294 transitions, 3142 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 12:49:02,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:02,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:49:02,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:02,922 INFO L124 PetriNetUnfolderBase]: 644/1248 cut-off events. [2024-06-14 12:49:02,923 INFO L125 PetriNetUnfolderBase]: For 208832/208835 co-relation queries the response was YES. [2024-06-14 12:49:02,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9894 conditions, 1248 events. 644/1248 cut-off events. For 208832/208835 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 7306 event pairs, 68 based on Foata normal form. 2/1245 useless extension candidates. Maximal degree in co-relation 9742. Up to 973 conditions per place. [2024-06-14 12:49:02,941 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 253 selfloop transitions, 57 changer transitions 0/313 dead transitions. [2024-06-14 12:49:02,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 313 transitions, 4162 flow [2024-06-14 12:49:02,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:49:02,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:49:02,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-14 12:49:02,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-14 12:49:02,942 INFO L175 Difference]: Start difference. First operand has 338 places, 294 transitions, 3142 flow. Second operand 11 states and 143 transitions. [2024-06-14 12:49:02,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 313 transitions, 4162 flow [2024-06-14 12:49:03,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 313 transitions, 3923 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-14 12:49:03,664 INFO L231 Difference]: Finished difference. Result has 340 places, 296 transitions, 3095 flow [2024-06-14 12:49:03,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2903, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3095, PETRI_PLACES=340, PETRI_TRANSITIONS=296} [2024-06-14 12:49:03,664 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 309 predicate places. [2024-06-14 12:49:03,664 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 296 transitions, 3095 flow [2024-06-14 12:49:03,664 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 12:49:03,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:03,664 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 12:49:03,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-14 12:49:03,665 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 12:49:03,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:03,665 INFO L85 PathProgramCache]: Analyzing trace with hash -434253083, now seen corresponding path program 14 times [2024-06-14 12:49:03,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:03,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713562123] [2024-06-14 12:49:03,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:03,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:03,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:05,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:05,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:05,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713562123] [2024-06-14 12:49:05,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713562123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:05,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:05,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:49:05,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092324165] [2024-06-14 12:49:05,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:05,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:49:05,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:05,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:49:05,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:49:06,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:49:06,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 296 transitions, 3095 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 12:49:06,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:06,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:49:06,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:06,744 INFO L124 PetriNetUnfolderBase]: 647/1251 cut-off events. [2024-06-14 12:49:06,744 INFO L125 PetriNetUnfolderBase]: For 205754/205757 co-relation queries the response was YES. [2024-06-14 12:49:06,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9873 conditions, 1251 events. 647/1251 cut-off events. For 205754/205757 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 7356 event pairs, 74 based on Foata normal form. 1/1245 useless extension candidates. Maximal degree in co-relation 9720. Up to 997 conditions per place. [2024-06-14 12:49:06,758 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 237 selfloop transitions, 72 changer transitions 0/312 dead transitions. [2024-06-14 12:49:06,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 312 transitions, 4481 flow [2024-06-14 12:49:06,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:49:06,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:49:06,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-14 12:49:06,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-14 12:49:06,759 INFO L175 Difference]: Start difference. First operand has 340 places, 296 transitions, 3095 flow. Second operand 11 states and 145 transitions. [2024-06-14 12:49:06,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 312 transitions, 4481 flow [2024-06-14 12:49:07,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 312 transitions, 4372 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-14 12:49:07,577 INFO L231 Difference]: Finished difference. Result has 344 places, 298 transitions, 3187 flow [2024-06-14 12:49:07,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2986, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3187, PETRI_PLACES=344, PETRI_TRANSITIONS=298} [2024-06-14 12:49:07,578 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 313 predicate places. [2024-06-14 12:49:07,578 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 298 transitions, 3187 flow [2024-06-14 12:49:07,578 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 12:49:07,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:07,578 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 12:49:07,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-14 12:49:07,578 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 12:49:07,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:07,580 INFO L85 PathProgramCache]: Analyzing trace with hash -434043554, now seen corresponding path program 13 times [2024-06-14 12:49:07,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:07,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663066040] [2024-06-14 12:49:07,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:07,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:07,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:08,680 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 12:49:08,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:08,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663066040] [2024-06-14 12:49:08,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663066040] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:08,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:08,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:49:08,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423712377] [2024-06-14 12:49:08,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:08,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:49:08,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:08,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:49:08,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:49:08,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:49:08,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 298 transitions, 3187 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 12:49:08,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:08,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:49:08,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:09,217 INFO L124 PetriNetUnfolderBase]: 651/1261 cut-off events. [2024-06-14 12:49:09,217 INFO L125 PetriNetUnfolderBase]: For 216019/216022 co-relation queries the response was YES. [2024-06-14 12:49:09,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10024 conditions, 1261 events. 651/1261 cut-off events. For 216019/216022 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 7406 event pairs, 70 based on Foata normal form. 2/1258 useless extension candidates. Maximal degree in co-relation 9869. Up to 1067 conditions per place. [2024-06-14 12:49:09,232 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 258 selfloop transitions, 49 changer transitions 0/310 dead transitions. [2024-06-14 12:49:09,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 310 transitions, 3861 flow [2024-06-14 12:49:09,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:49:09,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:49:09,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-14 12:49:09,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-14 12:49:09,233 INFO L175 Difference]: Start difference. First operand has 344 places, 298 transitions, 3187 flow. Second operand 10 states and 129 transitions. [2024-06-14 12:49:09,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 310 transitions, 3861 flow [2024-06-14 12:49:10,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 310 transitions, 3677 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-14 12:49:10,066 INFO L231 Difference]: Finished difference. Result has 345 places, 299 transitions, 3141 flow [2024-06-14 12:49:10,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3003, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3141, PETRI_PLACES=345, PETRI_TRANSITIONS=299} [2024-06-14 12:49:10,067 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 314 predicate places. [2024-06-14 12:49:10,067 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 299 transitions, 3141 flow [2024-06-14 12:49:10,067 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 12:49:10,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:10,067 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 12:49:10,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-14 12:49:10,067 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 12:49:10,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:10,067 INFO L85 PathProgramCache]: Analyzing trace with hash -434051273, now seen corresponding path program 15 times [2024-06-14 12:49:10,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:10,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841780757] [2024-06-14 12:49:10,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:10,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:10,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:11,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:11,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:11,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841780757] [2024-06-14 12:49:11,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841780757] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:11,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:11,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:49:11,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901536473] [2024-06-14 12:49:11,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:11,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:49:11,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:11,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:49:11,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:49:11,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:49:11,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 299 transitions, 3141 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 12:49:11,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:11,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:49:11,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:12,331 INFO L124 PetriNetUnfolderBase]: 647/1255 cut-off events. [2024-06-14 12:49:12,332 INFO L125 PetriNetUnfolderBase]: For 205839/205842 co-relation queries the response was YES. [2024-06-14 12:49:12,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9688 conditions, 1255 events. 647/1255 cut-off events. For 205839/205842 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 7390 event pairs, 70 based on Foata normal form. 2/1252 useless extension candidates. Maximal degree in co-relation 9532. Up to 1019 conditions per place. [2024-06-14 12:49:12,347 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 242 selfloop transitions, 66 changer transitions 0/311 dead transitions. [2024-06-14 12:49:12,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 311 transitions, 4017 flow [2024-06-14 12:49:12,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:49:12,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:49:12,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-14 12:49:12,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-14 12:49:12,349 INFO L175 Difference]: Start difference. First operand has 345 places, 299 transitions, 3141 flow. Second operand 11 states and 144 transitions. [2024-06-14 12:49:12,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 311 transitions, 4017 flow [2024-06-14 12:49:13,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 311 transitions, 3815 flow, removed 53 selfloop flow, removed 8 redundant places. [2024-06-14 12:49:13,176 INFO L231 Difference]: Finished difference. Result has 349 places, 299 transitions, 3084 flow [2024-06-14 12:49:13,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2939, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3084, PETRI_PLACES=349, PETRI_TRANSITIONS=299} [2024-06-14 12:49:13,177 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 318 predicate places. [2024-06-14 12:49:13,177 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 299 transitions, 3084 flow [2024-06-14 12:49:13,177 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 12:49:13,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:13,177 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 12:49:13,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-14 12:49:13,177 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 12:49:13,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:13,178 INFO L85 PathProgramCache]: Analyzing trace with hash -628192493, now seen corresponding path program 16 times [2024-06-14 12:49:13,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:13,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399414202] [2024-06-14 12:49:13,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:13,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:13,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:14,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:14,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:14,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399414202] [2024-06-14 12:49:14,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399414202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:14,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:14,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:49:14,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993614234] [2024-06-14 12:49:14,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:14,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:49:14,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:14,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:49:14,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:49:15,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:49:15,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 299 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 12:49:15,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:15,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:49:15,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:15,646 INFO L124 PetriNetUnfolderBase]: 650/1258 cut-off events. [2024-06-14 12:49:15,646 INFO L125 PetriNetUnfolderBase]: For 205230/205233 co-relation queries the response was YES. [2024-06-14 12:49:15,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9716 conditions, 1258 events. 650/1258 cut-off events. For 205230/205233 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 7405 event pairs, 74 based on Foata normal form. 1/1252 useless extension candidates. Maximal degree in co-relation 9558. Up to 1062 conditions per place. [2024-06-14 12:49:15,660 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 262 selfloop transitions, 48 changer transitions 0/313 dead transitions. [2024-06-14 12:49:15,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 313 transitions, 4028 flow [2024-06-14 12:49:15,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:49:15,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:49:15,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-14 12:49:15,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-14 12:49:15,661 INFO L175 Difference]: Start difference. First operand has 349 places, 299 transitions, 3084 flow. Second operand 11 states and 138 transitions. [2024-06-14 12:49:15,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 313 transitions, 4028 flow [2024-06-14 12:49:16,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 313 transitions, 3823 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-14 12:49:16,462 INFO L231 Difference]: Finished difference. Result has 348 places, 301 transitions, 3042 flow [2024-06-14 12:49:16,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2887, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3042, PETRI_PLACES=348, PETRI_TRANSITIONS=301} [2024-06-14 12:49:16,463 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 317 predicate places. [2024-06-14 12:49:16,463 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 301 transitions, 3042 flow [2024-06-14 12:49:16,463 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 12:49:16,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:16,463 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 12:49:16,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-14 12:49:16,463 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 12:49:16,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:16,463 INFO L85 PathProgramCache]: Analyzing trace with hash -627982964, now seen corresponding path program 14 times [2024-06-14 12:49:16,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:16,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629619418] [2024-06-14 12:49:16,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:16,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:16,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:17,680 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 12:49:17,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:17,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629619418] [2024-06-14 12:49:17,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629619418] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:17,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:17,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:49:17,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184907718] [2024-06-14 12:49:17,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:17,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:49:17,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:17,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:49:17,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:49:17,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:49:17,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 301 transitions, 3042 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 12:49:17,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:17,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:49:17,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:18,195 INFO L124 PetriNetUnfolderBase]: 649/1265 cut-off events. [2024-06-14 12:49:18,195 INFO L125 PetriNetUnfolderBase]: For 252189/252192 co-relation queries the response was YES. [2024-06-14 12:49:18,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8454 conditions, 1265 events. 649/1265 cut-off events. For 252189/252192 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 7501 event pairs, 67 based on Foata normal form. 18/1278 useless extension candidates. Maximal degree in co-relation 8296. Up to 1036 conditions per place. [2024-06-14 12:49:18,209 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 271 selfloop transitions, 35 changer transitions 7/316 dead transitions. [2024-06-14 12:49:18,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 316 transitions, 3782 flow [2024-06-14 12:49:18,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:49:18,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:49:18,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-14 12:49:18,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-14 12:49:18,210 INFO L175 Difference]: Start difference. First operand has 348 places, 301 transitions, 3042 flow. Second operand 10 states and 128 transitions. [2024-06-14 12:49:18,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 316 transitions, 3782 flow [2024-06-14 12:49:18,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 316 transitions, 3628 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-14 12:49:18,797 INFO L231 Difference]: Finished difference. Result has 349 places, 298 transitions, 2924 flow [2024-06-14 12:49:18,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2888, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2924, PETRI_PLACES=349, PETRI_TRANSITIONS=298} [2024-06-14 12:49:18,797 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 318 predicate places. [2024-06-14 12:49:18,797 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 298 transitions, 2924 flow [2024-06-14 12:49:18,797 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 12:49:18,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:18,797 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 12:49:18,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-14 12:49:18,798 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 12:49:18,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:18,798 INFO L85 PathProgramCache]: Analyzing trace with hash 2141977671, now seen corresponding path program 17 times [2024-06-14 12:49:18,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:18,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223326565] [2024-06-14 12:49:18,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:18,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:18,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:20,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:20,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:20,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223326565] [2024-06-14 12:49:20,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223326565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:20,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:20,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:49:20,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994696240] [2024-06-14 12:49:20,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:20,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:49:20,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:20,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:49:20,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:49:20,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:49:20,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 298 transitions, 2924 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 12:49:20,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:20,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:49:20,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:20,967 INFO L124 PetriNetUnfolderBase]: 615/1194 cut-off events. [2024-06-14 12:49:20,967 INFO L125 PetriNetUnfolderBase]: For 131352/131355 co-relation queries the response was YES. [2024-06-14 12:49:20,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7824 conditions, 1194 events. 615/1194 cut-off events. For 131352/131355 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 7020 event pairs, 57 based on Foata normal form. 1/1190 useless extension candidates. Maximal degree in co-relation 7665. Up to 888 conditions per place. [2024-06-14 12:49:20,981 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 212 selfloop transitions, 94 changer transitions 0/309 dead transitions. [2024-06-14 12:49:20,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 309 transitions, 3562 flow [2024-06-14 12:49:20,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:49:20,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:49:20,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-14 12:49:20,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-14 12:49:20,982 INFO L175 Difference]: Start difference. First operand has 349 places, 298 transitions, 2924 flow. Second operand 11 states and 138 transitions. [2024-06-14 12:49:20,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 309 transitions, 3562 flow [2024-06-14 12:49:21,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 309 transitions, 3430 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-14 12:49:21,475 INFO L231 Difference]: Finished difference. Result has 351 places, 298 transitions, 2985 flow [2024-06-14 12:49:21,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2792, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2985, PETRI_PLACES=351, PETRI_TRANSITIONS=298} [2024-06-14 12:49:21,475 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 320 predicate places. [2024-06-14 12:49:21,475 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 298 transitions, 2985 flow [2024-06-14 12:49:21,475 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 12:49:21,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:21,475 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 12:49:21,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-14 12:49:21,475 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 12:49:21,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:21,476 INFO L85 PathProgramCache]: Analyzing trace with hash -74502794, now seen corresponding path program 15 times [2024-06-14 12:49:21,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:21,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043749525] [2024-06-14 12:49:21,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:21,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:21,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:23,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:23,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:23,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043749525] [2024-06-14 12:49:23,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043749525] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:23,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:23,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:49:23,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935447869] [2024-06-14 12:49:23,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:23,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:49:23,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:23,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:49:23,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:49:23,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:49:23,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 298 transitions, 2985 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 12:49:23,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:23,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:49:23,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:23,604 INFO L124 PetriNetUnfolderBase]: 619/1202 cut-off events. [2024-06-14 12:49:23,605 INFO L125 PetriNetUnfolderBase]: For 141069/141072 co-relation queries the response was YES. [2024-06-14 12:49:23,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7976 conditions, 1202 events. 619/1202 cut-off events. For 141069/141072 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 7085 event pairs, 59 based on Foata normal form. 2/1199 useless extension candidates. Maximal degree in co-relation 7816. Up to 956 conditions per place. [2024-06-14 12:49:23,624 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 238 selfloop transitions, 70 changer transitions 0/311 dead transitions. [2024-06-14 12:49:23,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 311 transitions, 3667 flow [2024-06-14 12:49:23,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:49:23,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:49:23,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-14 12:49:23,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-14 12:49:23,625 INFO L175 Difference]: Start difference. First operand has 351 places, 298 transitions, 2985 flow. Second operand 11 states and 137 transitions. [2024-06-14 12:49:23,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 311 transitions, 3667 flow [2024-06-14 12:49:24,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 311 transitions, 3467 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 12:49:24,139 INFO L231 Difference]: Finished difference. Result has 352 places, 299 transitions, 2969 flow [2024-06-14 12:49:24,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2785, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2969, PETRI_PLACES=352, PETRI_TRANSITIONS=299} [2024-06-14 12:49:24,139 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 321 predicate places. [2024-06-14 12:49:24,139 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 299 transitions, 2969 flow [2024-06-14 12:49:24,139 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 12:49:24,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:24,139 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 12:49:24,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-14 12:49:24,140 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 12:49:24,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:24,140 INFO L85 PathProgramCache]: Analyzing trace with hash 124009357, now seen corresponding path program 18 times [2024-06-14 12:49:24,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:24,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701479663] [2024-06-14 12:49:24,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:24,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:24,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:25,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:25,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:25,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701479663] [2024-06-14 12:49:25,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701479663] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:25,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:25,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:49:25,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442782453] [2024-06-14 12:49:25,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:25,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:49:25,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:25,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:49:25,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:49:25,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:49:25,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 299 transitions, 2969 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 12:49:25,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:25,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:49:25,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:26,226 INFO L124 PetriNetUnfolderBase]: 617/1199 cut-off events. [2024-06-14 12:49:26,227 INFO L125 PetriNetUnfolderBase]: For 128599/128602 co-relation queries the response was YES. [2024-06-14 12:49:26,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7789 conditions, 1199 events. 617/1199 cut-off events. For 128599/128602 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 7061 event pairs, 59 based on Foata normal form. 1/1195 useless extension candidates. Maximal degree in co-relation 7628. Up to 739 conditions per place. [2024-06-14 12:49:26,240 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 171 selfloop transitions, 139 changer transitions 0/313 dead transitions. [2024-06-14 12:49:26,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 313 transitions, 4169 flow [2024-06-14 12:49:26,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:49:26,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:49:26,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-14 12:49:26,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428125 [2024-06-14 12:49:26,241 INFO L175 Difference]: Start difference. First operand has 352 places, 299 transitions, 2969 flow. Second operand 10 states and 137 transitions. [2024-06-14 12:49:26,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 313 transitions, 4169 flow [2024-06-14 12:49:26,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 313 transitions, 3982 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-06-14 12:49:26,700 INFO L231 Difference]: Finished difference. Result has 352 places, 301 transitions, 3141 flow [2024-06-14 12:49:26,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2782, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3141, PETRI_PLACES=352, PETRI_TRANSITIONS=301} [2024-06-14 12:49:26,701 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 321 predicate places. [2024-06-14 12:49:26,701 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 301 transitions, 3141 flow [2024-06-14 12:49:26,701 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 12:49:26,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:26,701 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 12:49:26,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-14 12:49:26,701 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 12:49:26,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:26,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1257229294, now seen corresponding path program 16 times [2024-06-14 12:49:26,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:26,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228866795] [2024-06-14 12:49:26,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:26,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:26,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:28,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:28,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:28,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228866795] [2024-06-14 12:49:28,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228866795] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:28,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:28,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:49:28,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664125441] [2024-06-14 12:49:28,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:28,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:49:28,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:28,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:49:28,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:49:28,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:49:28,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 301 transitions, 3141 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 12:49:28,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:28,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:49:28,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:28,570 INFO L124 PetriNetUnfolderBase]: 621/1207 cut-off events. [2024-06-14 12:49:28,571 INFO L125 PetriNetUnfolderBase]: For 138474/138477 co-relation queries the response was YES. [2024-06-14 12:49:28,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7988 conditions, 1207 events. 621/1207 cut-off events. For 138474/138477 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 7153 event pairs, 59 based on Foata normal form. 2/1204 useless extension candidates. Maximal degree in co-relation 7826. Up to 926 conditions per place. [2024-06-14 12:49:28,584 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 234 selfloop transitions, 78 changer transitions 0/315 dead transitions. [2024-06-14 12:49:28,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 315 transitions, 3835 flow [2024-06-14 12:49:28,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:49:28,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:49:28,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-14 12:49:28,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39488636363636365 [2024-06-14 12:49:28,585 INFO L175 Difference]: Start difference. First operand has 352 places, 301 transitions, 3141 flow. Second operand 11 states and 139 transitions. [2024-06-14 12:49:28,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 315 transitions, 3835 flow [2024-06-14 12:49:28,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 315 transitions, 3501 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-14 12:49:28,992 INFO L231 Difference]: Finished difference. Result has 354 places, 302 transitions, 3009 flow [2024-06-14 12:49:28,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2807, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3009, PETRI_PLACES=354, PETRI_TRANSITIONS=302} [2024-06-14 12:49:28,993 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 323 predicate places. [2024-06-14 12:49:28,993 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 302 transitions, 3009 flow [2024-06-14 12:49:28,993 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 12:49:28,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:28,993 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 12:49:28,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-14 12:49:28,993 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 12:49:28,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:28,994 INFO L85 PathProgramCache]: Analyzing trace with hash 175107346, now seen corresponding path program 17 times [2024-06-14 12:49:28,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:28,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410161303] [2024-06-14 12:49:28,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:28,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:29,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:30,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:30,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:30,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410161303] [2024-06-14 12:49:30,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410161303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:30,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:30,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:49:30,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878647417] [2024-06-14 12:49:30,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:30,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:49:30,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:30,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:49:30,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:49:30,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:49:30,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 302 transitions, 3009 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 12:49:30,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:30,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:49:30,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:31,163 INFO L124 PetriNetUnfolderBase]: 628/1219 cut-off events. [2024-06-14 12:49:31,164 INFO L125 PetriNetUnfolderBase]: For 138017/138017 co-relation queries the response was YES. [2024-06-14 12:49:31,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7915 conditions, 1219 events. 628/1219 cut-off events. For 138017/138017 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 7220 event pairs, 57 based on Foata normal form. 2/1219 useless extension candidates. Maximal degree in co-relation 7753. Up to 1111 conditions per place. [2024-06-14 12:49:31,179 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 294 selfloop transitions, 20 changer transitions 0/317 dead transitions. [2024-06-14 12:49:31,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 317 transitions, 3710 flow [2024-06-14 12:49:31,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:49:31,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:49:31,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-14 12:49:31,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-14 12:49:31,180 INFO L175 Difference]: Start difference. First operand has 354 places, 302 transitions, 3009 flow. Second operand 11 states and 127 transitions. [2024-06-14 12:49:31,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 317 transitions, 3710 flow [2024-06-14 12:49:31,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 317 transitions, 3518 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-14 12:49:31,663 INFO L231 Difference]: Finished difference. Result has 356 places, 305 transitions, 2908 flow [2024-06-14 12:49:31,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2817, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2908, PETRI_PLACES=356, PETRI_TRANSITIONS=305} [2024-06-14 12:49:31,664 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 325 predicate places. [2024-06-14 12:49:31,664 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 305 transitions, 2908 flow [2024-06-14 12:49:31,664 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 12:49:31,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:31,664 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 12:49:31,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-14 12:49:31,664 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 12:49:31,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:31,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1830131792, now seen corresponding path program 18 times [2024-06-14 12:49:31,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:31,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598158349] [2024-06-14 12:49:31,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:31,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:31,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:33,240 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 12:49:33,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:33,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598158349] [2024-06-14 12:49:33,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598158349] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:33,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:33,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:49:33,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049236945] [2024-06-14 12:49:33,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:33,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:49:33,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:33,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:49:33,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:49:33,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:49:33,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 305 transitions, 2908 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 12:49:33,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:33,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:49:33,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:33,855 INFO L124 PetriNetUnfolderBase]: 632/1227 cut-off events. [2024-06-14 12:49:33,855 INFO L125 PetriNetUnfolderBase]: For 139984/139984 co-relation queries the response was YES. [2024-06-14 12:49:33,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7836 conditions, 1227 events. 632/1227 cut-off events. For 139984/139984 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 7285 event pairs, 55 based on Foata normal form. 2/1227 useless extension candidates. Maximal degree in co-relation 7673. Up to 1046 conditions per place. [2024-06-14 12:49:33,870 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 290 selfloop transitions, 29 changer transitions 0/322 dead transitions. [2024-06-14 12:49:33,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 322 transitions, 3870 flow [2024-06-14 12:49:33,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:49:33,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:49:33,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-14 12:49:33,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-14 12:49:33,871 INFO L175 Difference]: Start difference. First operand has 356 places, 305 transitions, 2908 flow. Second operand 12 states and 140 transitions. [2024-06-14 12:49:33,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 322 transitions, 3870 flow [2024-06-14 12:49:34,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 322 transitions, 3814 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-14 12:49:34,330 INFO L231 Difference]: Finished difference. Result has 360 places, 306 transitions, 2956 flow [2024-06-14 12:49:34,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2852, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2956, PETRI_PLACES=360, PETRI_TRANSITIONS=306} [2024-06-14 12:49:34,330 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 329 predicate places. [2024-06-14 12:49:34,330 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 306 transitions, 2956 flow [2024-06-14 12:49:34,330 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 12:49:34,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:34,330 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 12:49:34,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-14 12:49:34,330 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 12:49:34,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:34,331 INFO L85 PathProgramCache]: Analyzing trace with hash 174847876, now seen corresponding path program 19 times [2024-06-14 12:49:34,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:34,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672794791] [2024-06-14 12:49:34,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:34,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:34,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:35,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:35,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:35,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672794791] [2024-06-14 12:49:35,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672794791] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:35,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:35,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:49:35,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060679072] [2024-06-14 12:49:35,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:35,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:49:35,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:35,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:49:35,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:49:36,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:49:36,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 306 transitions, 2956 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 12:49:36,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:36,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:49:36,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:36,516 INFO L124 PetriNetUnfolderBase]: 629/1222 cut-off events. [2024-06-14 12:49:36,517 INFO L125 PetriNetUnfolderBase]: For 126816/126816 co-relation queries the response was YES. [2024-06-14 12:49:36,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7571 conditions, 1222 events. 629/1222 cut-off events. For 126816/126816 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 7258 event pairs, 58 based on Foata normal form. 2/1222 useless extension candidates. Maximal degree in co-relation 7407. Up to 1120 conditions per place. [2024-06-14 12:49:36,531 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 298 selfloop transitions, 17 changer transitions 0/318 dead transitions. [2024-06-14 12:49:36,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 318 transitions, 3614 flow [2024-06-14 12:49:36,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:49:36,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:49:36,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-14 12:49:36,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-14 12:49:36,532 INFO L175 Difference]: Start difference. First operand has 360 places, 306 transitions, 2956 flow. Second operand 11 states and 125 transitions. [2024-06-14 12:49:36,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 318 transitions, 3614 flow [2024-06-14 12:49:37,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 318 transitions, 3442 flow, removed 34 selfloop flow, removed 11 redundant places. [2024-06-14 12:49:37,007 INFO L231 Difference]: Finished difference. Result has 360 places, 306 transitions, 2822 flow [2024-06-14 12:49:37,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2784, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2822, PETRI_PLACES=360, PETRI_TRANSITIONS=306} [2024-06-14 12:49:37,008 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 329 predicate places. [2024-06-14 12:49:37,008 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 306 transitions, 2822 flow [2024-06-14 12:49:37,008 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 12:49:37,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:37,008 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 12:49:37,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-14 12:49:37,008 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 12:49:37,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:37,009 INFO L85 PathProgramCache]: Analyzing trace with hash 184053946, now seen corresponding path program 20 times [2024-06-14 12:49:37,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:37,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450785829] [2024-06-14 12:49:37,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:37,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:37,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:38,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:38,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:38,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450785829] [2024-06-14 12:49:38,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450785829] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:38,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:38,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:49:38,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942808053] [2024-06-14 12:49:38,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:38,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:49:38,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:38,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:49:38,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:49:38,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:49:38,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 306 transitions, 2822 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 12:49:38,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:38,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:49:38,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:39,004 INFO L124 PetriNetUnfolderBase]: 633/1230 cut-off events. [2024-06-14 12:49:39,004 INFO L125 PetriNetUnfolderBase]: For 128104/128104 co-relation queries the response was YES. [2024-06-14 12:49:39,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7351 conditions, 1230 events. 633/1230 cut-off events. For 128104/128104 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 7322 event pairs, 54 based on Foata normal form. 2/1230 useless extension candidates. Maximal degree in co-relation 7189. Up to 1070 conditions per place. [2024-06-14 12:49:39,019 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 290 selfloop transitions, 27 changer transitions 0/320 dead transitions. [2024-06-14 12:49:39,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 320 transitions, 3773 flow [2024-06-14 12:49:39,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:49:39,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:49:39,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-14 12:49:39,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 12:49:39,020 INFO L175 Difference]: Start difference. First operand has 360 places, 306 transitions, 2822 flow. Second operand 10 states and 120 transitions. [2024-06-14 12:49:39,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 320 transitions, 3773 flow [2024-06-14 12:49:39,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 320 transitions, 3720 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-14 12:49:39,416 INFO L231 Difference]: Finished difference. Result has 359 places, 307 transitions, 2866 flow [2024-06-14 12:49:39,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2769, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2866, PETRI_PLACES=359, PETRI_TRANSITIONS=307} [2024-06-14 12:49:39,416 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 328 predicate places. [2024-06-14 12:49:39,417 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 307 transitions, 2866 flow [2024-06-14 12:49:39,417 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 12:49:39,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:39,417 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 12:49:39,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-14 12:49:39,417 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 12:49:39,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:39,418 INFO L85 PathProgramCache]: Analyzing trace with hash -627990683, now seen corresponding path program 19 times [2024-06-14 12:49:39,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:39,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551610513] [2024-06-14 12:49:39,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:39,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:39,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:41,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:41,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:41,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551610513] [2024-06-14 12:49:41,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551610513] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:41,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:41,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:49:41,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6534363] [2024-06-14 12:49:41,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:41,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:49:41,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:41,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:49:41,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:49:41,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:49:41,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 307 transitions, 2866 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 12:49:41,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:41,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:49:41,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:41,859 INFO L124 PetriNetUnfolderBase]: 631/1226 cut-off events. [2024-06-14 12:49:41,859 INFO L125 PetriNetUnfolderBase]: For 114427/114430 co-relation queries the response was YES. [2024-06-14 12:49:41,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7236 conditions, 1226 events. 631/1226 cut-off events. For 114427/114430 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 7289 event pairs, 66 based on Foata normal form. 1/1220 useless extension candidates. Maximal degree in co-relation 7073. Up to 1046 conditions per place. [2024-06-14 12:49:41,871 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 274 selfloop transitions, 41 changer transitions 0/318 dead transitions. [2024-06-14 12:49:41,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 318 transitions, 3522 flow [2024-06-14 12:49:41,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:49:41,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:49:41,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-14 12:49:41,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-14 12:49:41,872 INFO L175 Difference]: Start difference. First operand has 359 places, 307 transitions, 2866 flow. Second operand 11 states and 134 transitions. [2024-06-14 12:49:41,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 318 transitions, 3522 flow [2024-06-14 12:49:42,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 318 transitions, 3396 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-06-14 12:49:42,257 INFO L231 Difference]: Finished difference. Result has 361 places, 307 transitions, 2827 flow [2024-06-14 12:49:42,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2740, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2827, PETRI_PLACES=361, PETRI_TRANSITIONS=307} [2024-06-14 12:49:42,257 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 330 predicate places. [2024-06-14 12:49:42,257 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 307 transitions, 2827 flow [2024-06-14 12:49:42,258 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 12:49:42,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:42,258 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 12:49:42,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-14 12:49:42,258 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 12:49:42,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:42,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1819080602, now seen corresponding path program 21 times [2024-06-14 12:49:42,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:42,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211868415] [2024-06-14 12:49:42,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:42,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:42,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:43,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:43,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:43,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211868415] [2024-06-14 12:49:43,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211868415] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:43,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:43,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:49:43,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246523038] [2024-06-14 12:49:43,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:43,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:49:43,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:43,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:49:43,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:49:43,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:49:43,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 307 transitions, 2827 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 12:49:43,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:43,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:49:43,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:44,350 INFO L124 PetriNetUnfolderBase]: 628/1222 cut-off events. [2024-06-14 12:49:44,351 INFO L125 PetriNetUnfolderBase]: For 105673/105673 co-relation queries the response was YES. [2024-06-14 12:49:44,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6857 conditions, 1222 events. 628/1222 cut-off events. For 105673/105673 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 7268 event pairs, 57 based on Foata normal form. 2/1222 useless extension candidates. Maximal degree in co-relation 6694. Up to 1105 conditions per place. [2024-06-14 12:49:44,362 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 292 selfloop transitions, 25 changer transitions 0/320 dead transitions. [2024-06-14 12:49:44,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 320 transitions, 3491 flow [2024-06-14 12:49:44,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:49:44,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:49:44,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-14 12:49:44,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-14 12:49:44,363 INFO L175 Difference]: Start difference. First operand has 361 places, 307 transitions, 2827 flow. Second operand 12 states and 138 transitions. [2024-06-14 12:49:44,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 320 transitions, 3491 flow [2024-06-14 12:49:44,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 320 transitions, 3316 flow, removed 19 selfloop flow, removed 12 redundant places. [2024-06-14 12:49:44,705 INFO L231 Difference]: Finished difference. Result has 361 places, 307 transitions, 2706 flow [2024-06-14 12:49:44,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2652, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2706, PETRI_PLACES=361, PETRI_TRANSITIONS=307} [2024-06-14 12:49:44,705 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 330 predicate places. [2024-06-14 12:49:44,705 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 307 transitions, 2706 flow [2024-06-14 12:49:44,705 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 12:49:44,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:44,706 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 12:49:44,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-14 12:49:44,706 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 12:49:44,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:44,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1896489115, now seen corresponding path program 20 times [2024-06-14 12:49:44,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:44,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107359290] [2024-06-14 12:49:44,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:44,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:44,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:46,579 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 12:49:46,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:46,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107359290] [2024-06-14 12:49:46,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107359290] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:46,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:46,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:49:46,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356911250] [2024-06-14 12:49:46,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:46,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:49:46,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:46,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:49:46,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:49:46,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:49:46,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 307 transitions, 2706 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 12:49:46,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:46,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:49:46,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:47,217 INFO L124 PetriNetUnfolderBase]: 626/1219 cut-off events. [2024-06-14 12:49:47,217 INFO L125 PetriNetUnfolderBase]: For 90366/90366 co-relation queries the response was YES. [2024-06-14 12:49:47,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6548 conditions, 1219 events. 626/1219 cut-off events. For 90366/90366 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 7276 event pairs, 57 based on Foata normal form. 1/1218 useless extension candidates. Maximal degree in co-relation 6386. Up to 1120 conditions per place. [2024-06-14 12:49:47,227 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 297 selfloop transitions, 18 changer transitions 0/318 dead transitions. [2024-06-14 12:49:47,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 318 transitions, 3362 flow [2024-06-14 12:49:47,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:49:47,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:49:47,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-14 12:49:47,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-14 12:49:47,228 INFO L175 Difference]: Start difference. First operand has 361 places, 307 transitions, 2706 flow. Second operand 11 states and 125 transitions. [2024-06-14 12:49:47,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 318 transitions, 3362 flow [2024-06-14 12:49:47,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 318 transitions, 3234 flow, removed 22 selfloop flow, removed 13 redundant places. [2024-06-14 12:49:47,566 INFO L231 Difference]: Finished difference. Result has 359 places, 307 transitions, 2619 flow [2024-06-14 12:49:47,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2578, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2619, PETRI_PLACES=359, PETRI_TRANSITIONS=307} [2024-06-14 12:49:47,566 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 328 predicate places. [2024-06-14 12:49:47,567 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 307 transitions, 2619 flow [2024-06-14 12:49:47,567 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 12:49:47,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:47,567 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 12:49:47,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-14 12:49:47,567 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 12:49:47,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:47,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1496930069, now seen corresponding path program 1 times [2024-06-14 12:49:47,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:47,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879885694] [2024-06-14 12:49:47,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:47,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:47,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:48,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:48,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:48,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879885694] [2024-06-14 12:49:48,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879885694] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:48,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:48,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:49:48,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516653651] [2024-06-14 12:49:48,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:48,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:49:48,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:48,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:49:48,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:49:48,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:49:48,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 307 transitions, 2619 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 12:49:48,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:48,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:49:48,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:49,210 INFO L124 PetriNetUnfolderBase]: 638/1247 cut-off events. [2024-06-14 12:49:49,210 INFO L125 PetriNetUnfolderBase]: For 146522/146522 co-relation queries the response was YES. [2024-06-14 12:49:49,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6612 conditions, 1247 events. 638/1247 cut-off events. For 146522/146522 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 7450 event pairs, 49 based on Foata normal form. 8/1253 useless extension candidates. Maximal degree in co-relation 6450. Up to 1061 conditions per place. [2024-06-14 12:49:49,224 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 297 selfloop transitions, 15 changer transitions 18/333 dead transitions. [2024-06-14 12:49:49,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 333 transitions, 3389 flow [2024-06-14 12:49:49,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:49:49,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:49:49,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-14 12:49:49,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-14 12:49:49,225 INFO L175 Difference]: Start difference. First operand has 359 places, 307 transitions, 2619 flow. Second operand 11 states and 135 transitions. [2024-06-14 12:49:49,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 333 transitions, 3389 flow [2024-06-14 12:49:49,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 333 transitions, 3310 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-14 12:49:49,543 INFO L231 Difference]: Finished difference. Result has 358 places, 303 transitions, 2553 flow [2024-06-14 12:49:49,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2540, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2553, PETRI_PLACES=358, PETRI_TRANSITIONS=303} [2024-06-14 12:49:49,543 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 327 predicate places. [2024-06-14 12:49:49,543 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 303 transitions, 2553 flow [2024-06-14 12:49:49,543 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 12:49:49,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:49,543 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 12:49:49,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-14 12:49:49,544 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 12:49:49,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:49,544 INFO L85 PathProgramCache]: Analyzing trace with hash 368183155, now seen corresponding path program 2 times [2024-06-14 12:49:49,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:49,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782405429] [2024-06-14 12:49:49,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:49,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:49,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:50,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:50,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:50,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782405429] [2024-06-14 12:49:50,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782405429] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:50,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:50,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:49:50,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844643904] [2024-06-14 12:49:50,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:50,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:49:50,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:50,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:49:50,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:49:50,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:49:50,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 303 transitions, 2553 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 12:49:50,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:50,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:49:50,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:51,275 INFO L124 PetriNetUnfolderBase]: 618/1209 cut-off events. [2024-06-14 12:49:51,275 INFO L125 PetriNetUnfolderBase]: For 148847/148847 co-relation queries the response was YES. [2024-06-14 12:49:51,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6493 conditions, 1209 events. 618/1209 cut-off events. For 148847/148847 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 7210 event pairs, 45 based on Foata normal form. 8/1215 useless extension candidates. Maximal degree in co-relation 6330. Up to 1040 conditions per place. [2024-06-14 12:49:51,289 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 294 selfloop transitions, 16 changer transitions 12/325 dead transitions. [2024-06-14 12:49:51,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 325 transitions, 3295 flow [2024-06-14 12:49:51,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:49:51,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:49:51,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-14 12:49:51,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-14 12:49:51,290 INFO L175 Difference]: Start difference. First operand has 358 places, 303 transitions, 2553 flow. Second operand 11 states and 131 transitions. [2024-06-14 12:49:51,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 325 transitions, 3295 flow [2024-06-14 12:49:51,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 325 transitions, 3257 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 12:49:51,684 INFO L231 Difference]: Finished difference. Result has 352 places, 300 transitions, 2535 flow [2024-06-14 12:49:51,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2515, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2535, PETRI_PLACES=352, PETRI_TRANSITIONS=300} [2024-06-14 12:49:51,685 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 321 predicate places. [2024-06-14 12:49:51,685 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 300 transitions, 2535 flow [2024-06-14 12:49:51,685 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 12:49:51,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:51,685 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 12:49:51,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-14 12:49:51,685 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 12:49:51,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:51,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1239218061, now seen corresponding path program 3 times [2024-06-14 12:49:51,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:51,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626360602] [2024-06-14 12:49:51,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:51,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:51,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:52,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:52,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:52,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626360602] [2024-06-14 12:49:52,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626360602] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:52,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:52,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:49:52,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636603669] [2024-06-14 12:49:52,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:52,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:49:52,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:52,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:49:52,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:49:53,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:49:53,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 300 transitions, 2535 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 12:49:53,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:53,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:49:53,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:53,551 INFO L124 PetriNetUnfolderBase]: 612/1203 cut-off events. [2024-06-14 12:49:53,551 INFO L125 PetriNetUnfolderBase]: For 158297/158297 co-relation queries the response was YES. [2024-06-14 12:49:53,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6516 conditions, 1203 events. 612/1203 cut-off events. For 158297/158297 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 7185 event pairs, 55 based on Foata normal form. 10/1211 useless extension candidates. Maximal degree in co-relation 6356. Up to 1025 conditions per place. [2024-06-14 12:49:53,562 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 289 selfloop transitions, 17 changer transitions 12/321 dead transitions. [2024-06-14 12:49:53,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 321 transitions, 3309 flow [2024-06-14 12:49:53,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:49:53,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:49:53,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-14 12:49:53,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 12:49:53,563 INFO L175 Difference]: Start difference. First operand has 352 places, 300 transitions, 2535 flow. Second operand 11 states and 132 transitions. [2024-06-14 12:49:53,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 321 transitions, 3309 flow [2024-06-14 12:49:53,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 321 transitions, 3271 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 12:49:53,903 INFO L231 Difference]: Finished difference. Result has 348 places, 295 transitions, 2498 flow [2024-06-14 12:49:53,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2497, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2498, PETRI_PLACES=348, PETRI_TRANSITIONS=295} [2024-06-14 12:49:53,904 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 317 predicate places. [2024-06-14 12:49:53,904 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 295 transitions, 2498 flow [2024-06-14 12:49:53,904 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 12:49:53,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:53,904 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 12:49:53,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-14 12:49:53,904 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 12:49:53,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:53,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1610549099, now seen corresponding path program 4 times [2024-06-14 12:49:53,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:53,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489667020] [2024-06-14 12:49:53,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:53,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:53,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:55,141 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 12:49:55,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:55,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489667020] [2024-06-14 12:49:55,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489667020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:55,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:55,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:49:55,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397769867] [2024-06-14 12:49:55,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:55,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:49:55,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:55,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:49:55,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:49:55,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:49:55,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 295 transitions, 2498 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 12:49:55,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:55,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:49:55,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:55,730 INFO L124 PetriNetUnfolderBase]: 592/1163 cut-off events. [2024-06-14 12:49:55,730 INFO L125 PetriNetUnfolderBase]: For 93067/93067 co-relation queries the response was YES. [2024-06-14 12:49:55,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6252 conditions, 1163 events. 592/1163 cut-off events. For 93067/93067 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 6867 event pairs, 45 based on Foata normal form. 2/1163 useless extension candidates. Maximal degree in co-relation 6094. Up to 1019 conditions per place. [2024-06-14 12:49:55,742 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 292 selfloop transitions, 19 changer transitions 0/314 dead transitions. [2024-06-14 12:49:55,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 314 transitions, 3186 flow [2024-06-14 12:49:55,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:49:55,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:49:55,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-14 12:49:55,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-14 12:49:55,743 INFO L175 Difference]: Start difference. First operand has 348 places, 295 transitions, 2498 flow. Second operand 11 states and 127 transitions. [2024-06-14 12:49:55,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 314 transitions, 3186 flow [2024-06-14 12:49:56,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 314 transitions, 3116 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 12:49:56,100 INFO L231 Difference]: Finished difference. Result has 345 places, 296 transitions, 2490 flow [2024-06-14 12:49:56,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2428, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2490, PETRI_PLACES=345, PETRI_TRANSITIONS=296} [2024-06-14 12:49:56,100 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 314 predicate places. [2024-06-14 12:49:56,100 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 296 transitions, 2490 flow [2024-06-14 12:49:56,100 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 12:49:56,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:56,101 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 12:49:56,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-14 12:49:56,101 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 12:49:56,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:56,101 INFO L85 PathProgramCache]: Analyzing trace with hash -2109089387, now seen corresponding path program 5 times [2024-06-14 12:49:56,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:56,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10639081] [2024-06-14 12:49:56,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:56,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:56,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:57,434 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 12:49:57,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:57,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10639081] [2024-06-14 12:49:57,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10639081] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:57,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:57,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:49:57,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889217744] [2024-06-14 12:49:57,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:57,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:49:57,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:57,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:49:57,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:49:57,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:49:57,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 296 transitions, 2490 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 12:49:57,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:49:57,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:49:57,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:49:58,093 INFO L124 PetriNetUnfolderBase]: 626/1233 cut-off events. [2024-06-14 12:49:58,093 INFO L125 PetriNetUnfolderBase]: For 193539/193539 co-relation queries the response was YES. [2024-06-14 12:49:58,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7561 conditions, 1233 events. 626/1233 cut-off events. For 193539/193539 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 7338 event pairs, 63 based on Foata normal form. 8/1239 useless extension candidates. Maximal degree in co-relation 7404. Up to 995 conditions per place. [2024-06-14 12:49:58,106 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 289 selfloop transitions, 22 changer transitions 10/324 dead transitions. [2024-06-14 12:49:58,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 324 transitions, 3587 flow [2024-06-14 12:49:58,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:49:58,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:49:58,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-14 12:49:58,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-14 12:49:58,107 INFO L175 Difference]: Start difference. First operand has 345 places, 296 transitions, 2490 flow. Second operand 11 states and 140 transitions. [2024-06-14 12:49:58,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 324 transitions, 3587 flow [2024-06-14 12:49:58,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 324 transitions, 3535 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-14 12:49:58,599 INFO L231 Difference]: Finished difference. Result has 348 places, 294 transitions, 2471 flow [2024-06-14 12:49:58,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2438, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2471, PETRI_PLACES=348, PETRI_TRANSITIONS=294} [2024-06-14 12:49:58,599 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 317 predicate places. [2024-06-14 12:49:58,600 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 294 transitions, 2471 flow [2024-06-14 12:49:58,600 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 12:49:58,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:49:58,600 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 12:49:58,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-14 12:49:58,600 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 12:49:58,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:49:58,601 INFO L85 PathProgramCache]: Analyzing trace with hash -2108911757, now seen corresponding path program 6 times [2024-06-14 12:49:58,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:49:58,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430292948] [2024-06-14 12:49:58,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:49:58,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:49:58,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:49:59,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:49:59,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:49:59,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430292948] [2024-06-14 12:49:59,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430292948] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:49:59,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:49:59,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:49:59,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622381524] [2024-06-14 12:49:59,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:49:59,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:49:59,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:49:59,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:49:59,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:50:00,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:50:00,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 294 transitions, 2471 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 12:50:00,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:00,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:50:00,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:00,512 INFO L124 PetriNetUnfolderBase]: 588/1155 cut-off events. [2024-06-14 12:50:00,513 INFO L125 PetriNetUnfolderBase]: For 138269/138269 co-relation queries the response was YES. [2024-06-14 12:50:00,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6177 conditions, 1155 events. 588/1155 cut-off events. For 138269/138269 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 6812 event pairs, 47 based on Foata normal form. 8/1161 useless extension candidates. Maximal degree in co-relation 6018. Up to 995 conditions per place. [2024-06-14 12:50:00,532 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 281 selfloop transitions, 19 changer transitions 12/315 dead transitions. [2024-06-14 12:50:00,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 315 transitions, 3201 flow [2024-06-14 12:50:00,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:50:00,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:50:00,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-14 12:50:00,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 12:50:00,533 INFO L175 Difference]: Start difference. First operand has 348 places, 294 transitions, 2471 flow. Second operand 11 states and 132 transitions. [2024-06-14 12:50:00,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 315 transitions, 3201 flow [2024-06-14 12:50:00,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 315 transitions, 3149 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-14 12:50:00,982 INFO L231 Difference]: Finished difference. Result has 348 places, 290 transitions, 2404 flow [2024-06-14 12:50:00,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2419, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2404, PETRI_PLACES=348, PETRI_TRANSITIONS=290} [2024-06-14 12:50:00,983 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 317 predicate places. [2024-06-14 12:50:00,983 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 290 transitions, 2404 flow [2024-06-14 12:50:00,983 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 12:50:00,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:00,983 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 12:50:00,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-14 12:50:00,983 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 12:50:00,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:00,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1936421867, now seen corresponding path program 7 times [2024-06-14 12:50:00,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:00,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993744083] [2024-06-14 12:50:00,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:00,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:00,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:02,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:50:02,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:02,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993744083] [2024-06-14 12:50:02,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993744083] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:02,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:02,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:50:02,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111538004] [2024-06-14 12:50:02,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:02,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:50:02,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:02,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:50:02,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:50:02,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:50:02,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 290 transitions, 2404 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 12:50:02,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:02,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:50:02,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:03,033 INFO L124 PetriNetUnfolderBase]: 585/1150 cut-off events. [2024-06-14 12:50:03,033 INFO L125 PetriNetUnfolderBase]: For 152304/152304 co-relation queries the response was YES. [2024-06-14 12:50:03,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6152 conditions, 1150 events. 585/1150 cut-off events. For 152304/152304 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 6784 event pairs, 47 based on Foata normal form. 10/1158 useless extension candidates. Maximal degree in co-relation 5994. Up to 964 conditions per place. [2024-06-14 12:50:03,046 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 271 selfloop transitions, 31 changer transitions 6/311 dead transitions. [2024-06-14 12:50:03,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 311 transitions, 3156 flow [2024-06-14 12:50:03,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:50:03,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:50:03,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-14 12:50:03,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39488636363636365 [2024-06-14 12:50:03,047 INFO L175 Difference]: Start difference. First operand has 348 places, 290 transitions, 2404 flow. Second operand 11 states and 139 transitions. [2024-06-14 12:50:03,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 311 transitions, 3156 flow [2024-06-14 12:50:03,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 311 transitions, 3112 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 12:50:03,371 INFO L231 Difference]: Finished difference. Result has 343 places, 288 transitions, 2428 flow [2024-06-14 12:50:03,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2360, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2428, PETRI_PLACES=343, PETRI_TRANSITIONS=288} [2024-06-14 12:50:03,371 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 312 predicate places. [2024-06-14 12:50:03,371 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 288 transitions, 2428 flow [2024-06-14 12:50:03,371 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 12:50:03,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:03,371 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 12:50:03,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-14 12:50:03,372 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 12:50:03,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:03,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1709992359, now seen corresponding path program 8 times [2024-06-14 12:50:03,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:03,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179238870] [2024-06-14 12:50:03,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:03,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:03,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:04,541 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 12:50:04,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:04,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179238870] [2024-06-14 12:50:04,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179238870] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:04,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:04,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:50:04,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353105697] [2024-06-14 12:50:04,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:04,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:50:04,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:04,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:50:04,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:50:04,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:50:04,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 288 transitions, 2428 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 12:50:04,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:04,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:50:04,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:05,163 INFO L124 PetriNetUnfolderBase]: 580/1141 cut-off events. [2024-06-14 12:50:05,163 INFO L125 PetriNetUnfolderBase]: For 135221/135221 co-relation queries the response was YES. [2024-06-14 12:50:05,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6108 conditions, 1141 events. 580/1141 cut-off events. For 135221/135221 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 6705 event pairs, 39 based on Foata normal form. 8/1147 useless extension candidates. Maximal degree in co-relation 5952. Up to 976 conditions per place. [2024-06-14 12:50:05,174 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 276 selfloop transitions, 16 changer transitions 15/310 dead transitions. [2024-06-14 12:50:05,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 310 transitions, 3142 flow [2024-06-14 12:50:05,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:50:05,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:50:05,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-14 12:50:05,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 12:50:05,175 INFO L175 Difference]: Start difference. First operand has 343 places, 288 transitions, 2428 flow. Second operand 11 states and 132 transitions. [2024-06-14 12:50:05,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 310 transitions, 3142 flow [2024-06-14 12:50:05,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 310 transitions, 3032 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-06-14 12:50:05,468 INFO L231 Difference]: Finished difference. Result has 343 places, 283 transitions, 2313 flow [2024-06-14 12:50:05,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2318, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2313, PETRI_PLACES=343, PETRI_TRANSITIONS=283} [2024-06-14 12:50:05,469 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 312 predicate places. [2024-06-14 12:50:05,469 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 283 transitions, 2313 flow [2024-06-14 12:50:05,469 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 12:50:05,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:05,469 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 12:50:05,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-14 12:50:05,470 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 12:50:05,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:05,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1942677977, now seen corresponding path program 9 times [2024-06-14 12:50:05,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:05,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070161794] [2024-06-14 12:50:05,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:05,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:05,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:07,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:50:07,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:07,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070161794] [2024-06-14 12:50:07,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070161794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:07,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:07,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:50:07,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098398117] [2024-06-14 12:50:07,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:07,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:50:07,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:07,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:50:07,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:50:07,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:50:07,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 283 transitions, 2313 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 12:50:07,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:07,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:50:07,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:07,743 INFO L124 PetriNetUnfolderBase]: 558/1091 cut-off events. [2024-06-14 12:50:07,744 INFO L125 PetriNetUnfolderBase]: For 93535/93535 co-relation queries the response was YES. [2024-06-14 12:50:07,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5841 conditions, 1091 events. 558/1091 cut-off events. For 93535/93535 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 6356 event pairs, 41 based on Foata normal form. 2/1091 useless extension candidates. Maximal degree in co-relation 5684. Up to 952 conditions per place. [2024-06-14 12:50:07,761 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 268 selfloop transitions, 30 changer transitions 0/301 dead transitions. [2024-06-14 12:50:07,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 301 transitions, 2977 flow [2024-06-14 12:50:07,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:50:07,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:50:07,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-14 12:50:07,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-14 12:50:07,763 INFO L175 Difference]: Start difference. First operand has 343 places, 283 transitions, 2313 flow. Second operand 11 states and 134 transitions. [2024-06-14 12:50:07,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 301 transitions, 2977 flow [2024-06-14 12:50:08,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 301 transitions, 2939 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-14 12:50:08,094 INFO L231 Difference]: Finished difference. Result has 338 places, 284 transitions, 2363 flow [2024-06-14 12:50:08,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2275, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2363, PETRI_PLACES=338, PETRI_TRANSITIONS=284} [2024-06-14 12:50:08,095 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 307 predicate places. [2024-06-14 12:50:08,095 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 284 transitions, 2363 flow [2024-06-14 12:50:08,095 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 12:50:08,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:08,095 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 12:50:08,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-14 12:50:08,095 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 12:50:08,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:08,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1780656883, now seen corresponding path program 10 times [2024-06-14 12:50:08,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:08,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74731058] [2024-06-14 12:50:08,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:08,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:08,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:09,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:50:09,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:09,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74731058] [2024-06-14 12:50:09,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74731058] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:09,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:09,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:50:09,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911879805] [2024-06-14 12:50:09,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:09,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:50:09,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:09,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:50:09,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:50:09,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:50:09,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 284 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 12:50:09,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:09,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:50:09,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:10,287 INFO L124 PetriNetUnfolderBase]: 562/1099 cut-off events. [2024-06-14 12:50:10,288 INFO L125 PetriNetUnfolderBase]: For 90917/90917 co-relation queries the response was YES. [2024-06-14 12:50:10,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5919 conditions, 1099 events. 562/1099 cut-off events. For 90917/90917 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 6419 event pairs, 39 based on Foata normal form. 2/1099 useless extension candidates. Maximal degree in co-relation 5764. Up to 940 conditions per place. [2024-06-14 12:50:10,300 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 268 selfloop transitions, 32 changer transitions 0/303 dead transitions. [2024-06-14 12:50:10,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 303 transitions, 3035 flow [2024-06-14 12:50:10,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:50:10,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:50:10,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-14 12:50:10,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-14 12:50:10,301 INFO L175 Difference]: Start difference. First operand has 338 places, 284 transitions, 2363 flow. Second operand 11 states and 135 transitions. [2024-06-14 12:50:10,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 303 transitions, 3035 flow [2024-06-14 12:50:10,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 303 transitions, 2957 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-14 12:50:10,557 INFO L231 Difference]: Finished difference. Result has 340 places, 285 transitions, 2379 flow [2024-06-14 12:50:10,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2285, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2379, PETRI_PLACES=340, PETRI_TRANSITIONS=285} [2024-06-14 12:50:10,558 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 309 predicate places. [2024-06-14 12:50:10,558 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 285 transitions, 2379 flow [2024-06-14 12:50:10,558 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 12:50:10,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:10,558 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 12:50:10,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-14 12:50:10,558 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 12:50:10,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:10,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1936414923, now seen corresponding path program 1 times [2024-06-14 12:50:10,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:10,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684704871] [2024-06-14 12:50:10,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:10,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:10,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:12,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:50:12,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:12,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684704871] [2024-06-14 12:50:12,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684704871] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:12,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:12,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:50:12,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144879741] [2024-06-14 12:50:12,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:12,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:50:12,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:12,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:50:12,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:50:12,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:50:12,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 285 transitions, 2379 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 12:50:12,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:12,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:50:12,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:13,123 INFO L124 PetriNetUnfolderBase]: 574/1127 cut-off events. [2024-06-14 12:50:13,123 INFO L125 PetriNetUnfolderBase]: For 137415/137415 co-relation queries the response was YES. [2024-06-14 12:50:13,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6096 conditions, 1127 events. 574/1127 cut-off events. For 137415/137415 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 6614 event pairs, 45 based on Foata normal form. 8/1133 useless extension candidates. Maximal degree in co-relation 5940. Up to 956 conditions per place. [2024-06-14 12:50:13,140 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 270 selfloop transitions, 26 changer transitions 7/306 dead transitions. [2024-06-14 12:50:13,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 306 transitions, 3103 flow [2024-06-14 12:50:13,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:50:13,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:50:13,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-14 12:50:13,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3802083333333333 [2024-06-14 12:50:13,141 INFO L175 Difference]: Start difference. First operand has 340 places, 285 transitions, 2379 flow. Second operand 12 states and 146 transitions. [2024-06-14 12:50:13,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 306 transitions, 3103 flow [2024-06-14 12:50:13,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 306 transitions, 3019 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-14 12:50:13,426 INFO L231 Difference]: Finished difference. Result has 343 places, 282 transitions, 2331 flow [2024-06-14 12:50:13,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2295, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2331, PETRI_PLACES=343, PETRI_TRANSITIONS=282} [2024-06-14 12:50:13,427 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 312 predicate places. [2024-06-14 12:50:13,427 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 282 transitions, 2331 flow [2024-06-14 12:50:13,427 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 12:50:13,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:13,427 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 12:50:13,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-14 12:50:13,427 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 12:50:13,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:13,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1942671033, now seen corresponding path program 2 times [2024-06-14 12:50:13,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:13,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684281719] [2024-06-14 12:50:13,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:13,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:13,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:15,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:50:15,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:15,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684281719] [2024-06-14 12:50:15,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684281719] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:15,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:15,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:50:15,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457806430] [2024-06-14 12:50:15,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:15,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:50:15,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:15,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:50:15,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:50:15,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:50:15,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 282 transitions, 2331 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 12:50:15,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:15,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:50:15,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:15,876 INFO L124 PetriNetUnfolderBase]: 569/1124 cut-off events. [2024-06-14 12:50:15,877 INFO L125 PetriNetUnfolderBase]: For 139299/139299 co-relation queries the response was YES. [2024-06-14 12:50:15,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6023 conditions, 1124 events. 569/1124 cut-off events. For 139299/139299 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 6605 event pairs, 47 based on Foata normal form. 8/1130 useless extension candidates. Maximal degree in co-relation 5866. Up to 952 conditions per place. [2024-06-14 12:50:15,889 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 269 selfloop transitions, 24 changer transitions 7/303 dead transitions. [2024-06-14 12:50:15,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 303 transitions, 3049 flow [2024-06-14 12:50:15,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:50:15,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:50:15,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-14 12:50:15,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776041666666667 [2024-06-14 12:50:15,890 INFO L175 Difference]: Start difference. First operand has 343 places, 282 transitions, 2331 flow. Second operand 12 states and 145 transitions. [2024-06-14 12:50:15,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 303 transitions, 3049 flow [2024-06-14 12:50:16,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 303 transitions, 2991 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-14 12:50:16,174 INFO L231 Difference]: Finished difference. Result has 341 places, 279 transitions, 2305 flow [2024-06-14 12:50:16,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2273, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2305, PETRI_PLACES=341, PETRI_TRANSITIONS=279} [2024-06-14 12:50:16,175 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 310 predicate places. [2024-06-14 12:50:16,175 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 279 transitions, 2305 flow [2024-06-14 12:50:16,175 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 12:50:16,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:16,175 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 12:50:16,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-14 12:50:16,175 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 12:50:16,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:16,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1936175913, now seen corresponding path program 3 times [2024-06-14 12:50:16,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:16,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106343619] [2024-06-14 12:50:16,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:16,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:16,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:17,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:50:17,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:17,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106343619] [2024-06-14 12:50:17,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106343619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:17,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:17,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:50:17,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367040184] [2024-06-14 12:50:17,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:17,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:50:17,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:17,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:50:17,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:50:17,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:50:17,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 279 transitions, 2305 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 12:50:17,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:17,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:50:17,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:18,246 INFO L124 PetriNetUnfolderBase]: 560/1109 cut-off events. [2024-06-14 12:50:18,246 INFO L125 PetriNetUnfolderBase]: For 120101/120101 co-relation queries the response was YES. [2024-06-14 12:50:18,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5910 conditions, 1109 events. 560/1109 cut-off events. For 120101/120101 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 6506 event pairs, 41 based on Foata normal form. 6/1113 useless extension candidates. Maximal degree in co-relation 5754. Up to 927 conditions per place. [2024-06-14 12:50:18,258 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 264 selfloop transitions, 21 changer transitions 10/298 dead transitions. [2024-06-14 12:50:18,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 298 transitions, 2983 flow [2024-06-14 12:50:18,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:50:18,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:50:18,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-14 12:50:18,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-14 12:50:18,259 INFO L175 Difference]: Start difference. First operand has 341 places, 279 transitions, 2305 flow. Second operand 12 states and 138 transitions. [2024-06-14 12:50:18,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 298 transitions, 2983 flow [2024-06-14 12:50:18,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 298 transitions, 2929 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-14 12:50:18,581 INFO L231 Difference]: Finished difference. Result has 339 places, 276 transitions, 2271 flow [2024-06-14 12:50:18,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2251, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2271, PETRI_PLACES=339, PETRI_TRANSITIONS=276} [2024-06-14 12:50:18,581 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 308 predicate places. [2024-06-14 12:50:18,581 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 276 transitions, 2271 flow [2024-06-14 12:50:18,581 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 12:50:18,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:18,582 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 12:50:18,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-14 12:50:18,582 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 12:50:18,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:18,582 INFO L85 PathProgramCache]: Analyzing trace with hash 46150369, now seen corresponding path program 11 times [2024-06-14 12:50:18,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:18,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506874202] [2024-06-14 12:50:18,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:18,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:18,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:20,016 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 12:50:20,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:20,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506874202] [2024-06-14 12:50:20,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506874202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:20,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:20,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:50:20,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929318215] [2024-06-14 12:50:20,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:20,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:50:20,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:20,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:50:20,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:50:20,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:50:20,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 276 transitions, 2271 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 12:50:20,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:20,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:50:20,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:20,603 INFO L124 PetriNetUnfolderBase]: 549/1080 cut-off events. [2024-06-14 12:50:20,603 INFO L125 PetriNetUnfolderBase]: For 90946/90946 co-relation queries the response was YES. [2024-06-14 12:50:20,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5772 conditions, 1080 events. 549/1080 cut-off events. For 90946/90946 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 6302 event pairs, 43 based on Foata normal form. 2/1080 useless extension candidates. Maximal degree in co-relation 5617. Up to 891 conditions per place. [2024-06-14 12:50:20,615 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 243 selfloop transitions, 45 changer transitions 0/291 dead transitions. [2024-06-14 12:50:20,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 291 transitions, 2907 flow [2024-06-14 12:50:20,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:50:20,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:50:20,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-14 12:50:20,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-14 12:50:20,616 INFO L175 Difference]: Start difference. First operand has 339 places, 276 transitions, 2271 flow. Second operand 11 states and 137 transitions. [2024-06-14 12:50:20,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 291 transitions, 2907 flow [2024-06-14 12:50:20,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 291 transitions, 2861 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 12:50:20,952 INFO L231 Difference]: Finished difference. Result has 335 places, 277 transitions, 2347 flow [2024-06-14 12:50:20,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2225, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2347, PETRI_PLACES=335, PETRI_TRANSITIONS=277} [2024-06-14 12:50:20,952 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 304 predicate places. [2024-06-14 12:50:20,952 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 277 transitions, 2347 flow [2024-06-14 12:50:20,953 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 12:50:20,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:20,953 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 12:50:20,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-14 12:50:20,953 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 12:50:20,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:20,953 INFO L85 PathProgramCache]: Analyzing trace with hash 39894259, now seen corresponding path program 12 times [2024-06-14 12:50:20,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:20,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247692451] [2024-06-14 12:50:20,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:20,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:20,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:22,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:50:22,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:22,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247692451] [2024-06-14 12:50:22,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247692451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:22,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:22,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:50:22,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465632208] [2024-06-14 12:50:22,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:22,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:50:22,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:22,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:50:22,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:50:22,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:50:22,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 277 transitions, 2347 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 12:50:22,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:22,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:50:22,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:22,979 INFO L124 PetriNetUnfolderBase]: 553/1088 cut-off events. [2024-06-14 12:50:22,979 INFO L125 PetriNetUnfolderBase]: For 89994/89994 co-relation queries the response was YES. [2024-06-14 12:50:22,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5892 conditions, 1088 events. 553/1088 cut-off events. For 89994/89994 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 6343 event pairs, 43 based on Foata normal form. 2/1088 useless extension candidates. Maximal degree in co-relation 5738. Up to 855 conditions per place. [2024-06-14 12:50:22,988 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 224 selfloop transitions, 65 changer transitions 0/292 dead transitions. [2024-06-14 12:50:22,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 292 transitions, 2987 flow [2024-06-14 12:50:22,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:50:22,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:50:22,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-14 12:50:22,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-14 12:50:22,989 INFO L175 Difference]: Start difference. First operand has 335 places, 277 transitions, 2347 flow. Second operand 11 states and 140 transitions. [2024-06-14 12:50:22,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 292 transitions, 2987 flow [2024-06-14 12:50:23,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 292 transitions, 2875 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-14 12:50:23,308 INFO L231 Difference]: Finished difference. Result has 337 places, 278 transitions, 2399 flow [2024-06-14 12:50:23,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2235, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2399, PETRI_PLACES=337, PETRI_TRANSITIONS=278} [2024-06-14 12:50:23,308 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 306 predicate places. [2024-06-14 12:50:23,308 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 278 transitions, 2399 flow [2024-06-14 12:50:23,309 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 12:50:23,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:23,309 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 12:50:23,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-14 12:50:23,309 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 12:50:23,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:23,310 INFO L85 PathProgramCache]: Analyzing trace with hash 267795409, now seen corresponding path program 13 times [2024-06-14 12:50:23,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:23,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449024444] [2024-06-14 12:50:23,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:23,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:23,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:24,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:50:24,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:24,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449024444] [2024-06-14 12:50:24,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449024444] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:24,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:24,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:50:24,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633003164] [2024-06-14 12:50:24,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:24,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:50:24,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:24,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:50:24,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:50:24,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:50:24,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 278 transitions, 2399 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 12:50:24,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:24,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:50:24,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:25,406 INFO L124 PetriNetUnfolderBase]: 557/1096 cut-off events. [2024-06-14 12:50:25,406 INFO L125 PetriNetUnfolderBase]: For 91511/91511 co-relation queries the response was YES. [2024-06-14 12:50:25,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5979 conditions, 1096 events. 557/1096 cut-off events. For 91511/91511 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 6391 event pairs, 45 based on Foata normal form. 2/1096 useless extension candidates. Maximal degree in co-relation 5824. Up to 907 conditions per place. [2024-06-14 12:50:25,417 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 240 selfloop transitions, 50 changer transitions 0/293 dead transitions. [2024-06-14 12:50:25,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 293 transitions, 3043 flow [2024-06-14 12:50:25,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:50:25,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:50:25,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-14 12:50:25,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-14 12:50:25,418 INFO L175 Difference]: Start difference. First operand has 337 places, 278 transitions, 2399 flow. Second operand 11 states and 135 transitions. [2024-06-14 12:50:25,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 293 transitions, 3043 flow [2024-06-14 12:50:25,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 293 transitions, 2889 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-14 12:50:25,791 INFO L231 Difference]: Finished difference. Result has 339 places, 279 transitions, 2381 flow [2024-06-14 12:50:25,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2245, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2381, PETRI_PLACES=339, PETRI_TRANSITIONS=279} [2024-06-14 12:50:25,791 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 308 predicate places. [2024-06-14 12:50:25,791 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 279 transitions, 2381 flow [2024-06-14 12:50:25,791 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 12:50:25,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:25,791 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 12:50:25,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-14 12:50:25,791 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 12:50:25,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:25,792 INFO L85 PathProgramCache]: Analyzing trace with hash 39716629, now seen corresponding path program 14 times [2024-06-14 12:50:25,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:25,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530654189] [2024-06-14 12:50:25,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:25,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:25,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:27,006 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 12:50:27,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:27,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530654189] [2024-06-14 12:50:27,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530654189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:27,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:27,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:50:27,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807878232] [2024-06-14 12:50:27,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:27,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:50:27,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:27,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:50:27,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:50:27,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:50:27,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 279 transitions, 2381 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 12:50:27,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:27,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:50:27,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:27,660 INFO L124 PetriNetUnfolderBase]: 583/1150 cut-off events. [2024-06-14 12:50:27,660 INFO L125 PetriNetUnfolderBase]: For 153251/153251 co-relation queries the response was YES. [2024-06-14 12:50:27,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7264 conditions, 1150 events. 583/1150 cut-off events. For 153251/153251 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 6769 event pairs, 57 based on Foata normal form. 2/1150 useless extension candidates. Maximal degree in co-relation 7108. Up to 837 conditions per place. [2024-06-14 12:50:27,674 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 228 selfloop transitions, 68 changer transitions 0/299 dead transitions. [2024-06-14 12:50:27,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 299 transitions, 3359 flow [2024-06-14 12:50:27,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:50:27,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:50:27,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-14 12:50:27,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-14 12:50:27,674 INFO L175 Difference]: Start difference. First operand has 339 places, 279 transitions, 2381 flow. Second operand 11 states and 145 transitions. [2024-06-14 12:50:27,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 299 transitions, 3359 flow [2024-06-14 12:50:28,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 299 transitions, 3233 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-14 12:50:28,210 INFO L231 Difference]: Finished difference. Result has 341 places, 280 transitions, 2429 flow [2024-06-14 12:50:28,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2255, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2429, PETRI_PLACES=341, PETRI_TRANSITIONS=280} [2024-06-14 12:50:28,211 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 310 predicate places. [2024-06-14 12:50:28,211 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 280 transitions, 2429 flow [2024-06-14 12:50:28,211 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 12:50:28,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:28,211 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 12:50:28,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-14 12:50:28,212 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 12:50:28,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:28,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1843671565, now seen corresponding path program 15 times [2024-06-14 12:50:28,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:28,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117508014] [2024-06-14 12:50:28,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:28,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:28,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:29,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:50:29,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:29,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117508014] [2024-06-14 12:50:29,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117508014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:29,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:29,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:50:29,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115322859] [2024-06-14 12:50:29,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:29,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:50:29,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:29,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:50:29,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:50:29,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:50:29,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 280 transitions, 2429 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 12:50:29,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:29,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:50:29,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:29,863 INFO L124 PetriNetUnfolderBase]: 617/1224 cut-off events. [2024-06-14 12:50:29,864 INFO L125 PetriNetUnfolderBase]: For 254609/254609 co-relation queries the response was YES. [2024-06-14 12:50:29,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8703 conditions, 1224 events. 617/1224 cut-off events. For 254609/254609 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 7250 event pairs, 75 based on Foata normal form. 8/1230 useless extension candidates. Maximal degree in co-relation 8546. Up to 989 conditions per place. [2024-06-14 12:50:29,877 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 271 selfloop transitions, 21 changer transitions 10/305 dead transitions. [2024-06-14 12:50:29,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 305 transitions, 3508 flow [2024-06-14 12:50:29,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:50:29,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:50:29,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-14 12:50:29,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-14 12:50:29,878 INFO L175 Difference]: Start difference. First operand has 341 places, 280 transitions, 2429 flow. Second operand 11 states and 138 transitions. [2024-06-14 12:50:29,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 305 transitions, 3508 flow [2024-06-14 12:50:30,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 305 transitions, 3342 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-14 12:50:30,587 INFO L231 Difference]: Finished difference. Result has 344 places, 278 transitions, 2294 flow [2024-06-14 12:50:30,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2265, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2294, PETRI_PLACES=344, PETRI_TRANSITIONS=278} [2024-06-14 12:50:30,587 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 313 predicate places. [2024-06-14 12:50:30,587 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 278 transitions, 2294 flow [2024-06-14 12:50:30,587 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 12:50:30,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:30,587 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 12:50:30,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-14 12:50:30,587 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 12:50:30,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:30,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1843493935, now seen corresponding path program 16 times [2024-06-14 12:50:30,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:30,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024550713] [2024-06-14 12:50:30,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:30,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:30,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:31,688 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 12:50:31,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:31,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024550713] [2024-06-14 12:50:31,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024550713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:31,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:31,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:50:31,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946671356] [2024-06-14 12:50:31,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:31,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:50:31,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:31,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:50:31,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:50:31,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:50:31,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 278 transitions, 2294 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 12:50:31,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:31,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:50:31,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:32,234 INFO L124 PetriNetUnfolderBase]: 557/1100 cut-off events. [2024-06-14 12:50:32,234 INFO L125 PetriNetUnfolderBase]: For 137906/137906 co-relation queries the response was YES. [2024-06-14 12:50:32,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5853 conditions, 1100 events. 557/1100 cut-off events. For 137906/137906 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 6440 event pairs, 47 based on Foata normal form. 8/1106 useless extension candidates. Maximal degree in co-relation 5694. Up to 943 conditions per place. [2024-06-14 12:50:32,246 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 263 selfloop transitions, 19 changer transitions 11/296 dead transitions. [2024-06-14 12:50:32,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 296 transitions, 2988 flow [2024-06-14 12:50:32,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:50:32,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:50:32,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-14 12:50:32,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-14 12:50:32,246 INFO L175 Difference]: Start difference. First operand has 344 places, 278 transitions, 2294 flow. Second operand 11 states and 130 transitions. [2024-06-14 12:50:32,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 296 transitions, 2988 flow [2024-06-14 12:50:32,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 296 transitions, 2937 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-14 12:50:32,639 INFO L231 Difference]: Finished difference. Result has 344 places, 275 transitions, 2247 flow [2024-06-14 12:50:32,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2243, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2247, PETRI_PLACES=344, PETRI_TRANSITIONS=275} [2024-06-14 12:50:32,639 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 313 predicate places. [2024-06-14 12:50:32,639 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 275 transitions, 2247 flow [2024-06-14 12:50:32,639 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 12:50:32,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:32,639 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 12:50:32,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-14 12:50:32,639 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 12:50:32,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:32,640 INFO L85 PathProgramCache]: Analyzing trace with hash -199843367, now seen corresponding path program 17 times [2024-06-14 12:50:32,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:32,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539159009] [2024-06-14 12:50:32,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:32,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:32,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:33,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:50:33,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:33,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539159009] [2024-06-14 12:50:33,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539159009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:33,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:33,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:50:33,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410017933] [2024-06-14 12:50:33,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:33,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:50:33,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:33,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:50:33,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:50:34,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:50:34,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 275 transitions, 2247 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 12:50:34,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:34,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:50:34,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:34,601 INFO L124 PetriNetUnfolderBase]: 556/1097 cut-off events. [2024-06-14 12:50:34,601 INFO L125 PetriNetUnfolderBase]: For 154510/154510 co-relation queries the response was YES. [2024-06-14 12:50:34,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5848 conditions, 1097 events. 556/1097 cut-off events. For 154510/154510 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 6426 event pairs, 47 based on Foata normal form. 10/1105 useless extension candidates. Maximal degree in co-relation 5690. Up to 914 conditions per place. [2024-06-14 12:50:34,613 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 253 selfloop transitions, 31 changer transitions 6/293 dead transitions. [2024-06-14 12:50:34,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 293 transitions, 2965 flow [2024-06-14 12:50:34,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:50:34,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:50:34,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-14 12:50:34,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-14 12:50:34,614 INFO L175 Difference]: Start difference. First operand has 344 places, 275 transitions, 2247 flow. Second operand 11 states and 137 transitions. [2024-06-14 12:50:34,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 293 transitions, 2965 flow [2024-06-14 12:50:34,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 293 transitions, 2921 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 12:50:34,934 INFO L231 Difference]: Finished difference. Result has 339 places, 273 transitions, 2285 flow [2024-06-14 12:50:34,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2203, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2285, PETRI_PLACES=339, PETRI_TRANSITIONS=273} [2024-06-14 12:50:34,934 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 308 predicate places. [2024-06-14 12:50:34,934 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 273 transitions, 2285 flow [2024-06-14 12:50:34,934 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 12:50:34,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:34,934 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 12:50:34,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-14 12:50:34,935 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 12:50:34,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:34,935 INFO L85 PathProgramCache]: Analyzing trace with hash -377094857, now seen corresponding path program 18 times [2024-06-14 12:50:34,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:34,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662950625] [2024-06-14 12:50:34,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:34,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:34,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:36,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:50:36,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:36,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662950625] [2024-06-14 12:50:36,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662950625] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:36,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:36,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:50:36,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497046737] [2024-06-14 12:50:36,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:36,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:50:36,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:36,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:50:36,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:50:36,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:50:36,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 273 transitions, 2285 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 12:50:36,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:36,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:50:36,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:37,073 INFO L124 PetriNetUnfolderBase]: 551/1088 cut-off events. [2024-06-14 12:50:37,073 INFO L125 PetriNetUnfolderBase]: For 135945/135945 co-relation queries the response was YES. [2024-06-14 12:50:37,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5834 conditions, 1088 events. 551/1088 cut-off events. For 135945/135945 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 6356 event pairs, 39 based on Foata normal form. 8/1094 useless extension candidates. Maximal degree in co-relation 5678. Up to 926 conditions per place. [2024-06-14 12:50:37,085 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 258 selfloop transitions, 17 changer transitions 14/292 dead transitions. [2024-06-14 12:50:37,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 292 transitions, 2965 flow [2024-06-14 12:50:37,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:50:37,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:50:37,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-14 12:50:37,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-14 12:50:37,086 INFO L175 Difference]: Start difference. First operand has 339 places, 273 transitions, 2285 flow. Second operand 11 states and 130 transitions. [2024-06-14 12:50:37,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 292 transitions, 2965 flow [2024-06-14 12:50:37,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 292 transitions, 2849 flow, removed 19 selfloop flow, removed 11 redundant places. [2024-06-14 12:50:37,503 INFO L231 Difference]: Finished difference. Result has 339 places, 269 transitions, 2185 flow [2024-06-14 12:50:37,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2171, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2185, PETRI_PLACES=339, PETRI_TRANSITIONS=269} [2024-06-14 12:50:37,503 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 308 predicate places. [2024-06-14 12:50:37,504 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 269 transitions, 2185 flow [2024-06-14 12:50:37,504 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 12:50:37,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:37,504 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 12:50:37,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-14 12:50:37,504 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 12:50:37,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:37,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1677260155, now seen corresponding path program 19 times [2024-06-14 12:50:37,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:37,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560902977] [2024-06-14 12:50:37,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:37,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:37,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:39,136 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 12:50:39,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:39,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560902977] [2024-06-14 12:50:39,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560902977] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:39,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:39,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:50:39,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972463052] [2024-06-14 12:50:39,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:39,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:50:39,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:39,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:50:39,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:50:39,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:50:39,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 269 transitions, 2185 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 12:50:39,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:39,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:50:39,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:39,851 INFO L124 PetriNetUnfolderBase]: 532/1045 cut-off events. [2024-06-14 12:50:39,852 INFO L125 PetriNetUnfolderBase]: For 94701/94701 co-relation queries the response was YES. [2024-06-14 12:50:39,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5545 conditions, 1045 events. 532/1045 cut-off events. For 94701/94701 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 6056 event pairs, 41 based on Foata normal form. 2/1045 useless extension candidates. Maximal degree in co-relation 5389. Up to 904 conditions per place. [2024-06-14 12:50:39,862 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 250 selfloop transitions, 31 changer transitions 0/284 dead transitions. [2024-06-14 12:50:39,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 284 transitions, 2815 flow [2024-06-14 12:50:39,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:50:39,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:50:39,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-14 12:50:39,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 12:50:39,864 INFO L175 Difference]: Start difference. First operand has 339 places, 269 transitions, 2185 flow. Second operand 11 states and 132 transitions. [2024-06-14 12:50:39,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 284 transitions, 2815 flow [2024-06-14 12:50:40,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 284 transitions, 2775 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-14 12:50:40,153 INFO L231 Difference]: Finished difference. Result has 334 places, 270 transitions, 2247 flow [2024-06-14 12:50:40,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2145, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2247, PETRI_PLACES=334, PETRI_TRANSITIONS=270} [2024-06-14 12:50:40,153 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 303 predicate places. [2024-06-14 12:50:40,154 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 270 transitions, 2247 flow [2024-06-14 12:50:40,154 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 12:50:40,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:40,154 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 12:50:40,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-14 12:50:40,154 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 12:50:40,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:40,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1677437785, now seen corresponding path program 20 times [2024-06-14 12:50:40,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:40,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350192030] [2024-06-14 12:50:40,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:40,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:40,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:42,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:50:42,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:42,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350192030] [2024-06-14 12:50:42,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350192030] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:42,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:42,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:50:42,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665576555] [2024-06-14 12:50:42,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:42,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:50:42,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:42,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:50:42,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:50:42,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:50:42,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 270 transitions, 2247 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 12:50:42,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:42,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:50:42,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:42,865 INFO L124 PetriNetUnfolderBase]: 536/1053 cut-off events. [2024-06-14 12:50:42,866 INFO L125 PetriNetUnfolderBase]: For 92451/92451 co-relation queries the response was YES. [2024-06-14 12:50:42,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5647 conditions, 1053 events. 536/1053 cut-off events. For 92451/92451 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 6107 event pairs, 39 based on Foata normal form. 2/1053 useless extension candidates. Maximal degree in co-relation 5493. Up to 901 conditions per place. [2024-06-14 12:50:42,876 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 254 selfloop transitions, 29 changer transitions 0/286 dead transitions. [2024-06-14 12:50:42,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 286 transitions, 2885 flow [2024-06-14 12:50:42,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:50:42,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:50:42,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-14 12:50:42,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-14 12:50:42,877 INFO L175 Difference]: Start difference. First operand has 334 places, 270 transitions, 2247 flow. Second operand 11 states and 131 transitions. [2024-06-14 12:50:42,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 286 transitions, 2885 flow [2024-06-14 12:50:43,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 286 transitions, 2793 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-14 12:50:43,203 INFO L231 Difference]: Finished difference. Result has 336 places, 271 transitions, 2255 flow [2024-06-14 12:50:43,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2155, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2255, PETRI_PLACES=336, PETRI_TRANSITIONS=271} [2024-06-14 12:50:43,203 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 305 predicate places. [2024-06-14 12:50:43,203 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 271 transitions, 2255 flow [2024-06-14 12:50:43,203 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 12:50:43,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:43,203 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 12:50:43,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-14 12:50:43,204 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 12:50:43,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:43,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1677253211, now seen corresponding path program 4 times [2024-06-14 12:50:43,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:43,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123170145] [2024-06-14 12:50:43,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:43,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:43,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:45,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:50:45,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:45,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123170145] [2024-06-14 12:50:45,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123170145] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:45,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:45,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:50:45,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739485658] [2024-06-14 12:50:45,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:45,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:50:45,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:45,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:50:45,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:50:46,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:50:46,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 271 transitions, 2255 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 12:50:46,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:46,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:50:46,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:46,795 INFO L124 PetriNetUnfolderBase]: 548/1081 cut-off events. [2024-06-14 12:50:46,795 INFO L125 PetriNetUnfolderBase]: For 139311/139311 co-relation queries the response was YES. [2024-06-14 12:50:46,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5788 conditions, 1081 events. 548/1081 cut-off events. For 139311/139311 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 6304 event pairs, 45 based on Foata normal form. 8/1087 useless extension candidates. Maximal degree in co-relation 5633. Up to 902 conditions per place. [2024-06-14 12:50:46,811 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 251 selfloop transitions, 24 changer transitions 9/287 dead transitions. [2024-06-14 12:50:46,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 287 transitions, 2921 flow [2024-06-14 12:50:46,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:50:46,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:50:46,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-14 12:50:46,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-14 12:50:46,815 INFO L175 Difference]: Start difference. First operand has 336 places, 271 transitions, 2255 flow. Second operand 12 states and 138 transitions. [2024-06-14 12:50:46,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 287 transitions, 2921 flow [2024-06-14 12:50:47,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 287 transitions, 2831 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-14 12:50:47,118 INFO L231 Difference]: Finished difference. Result has 339 places, 268 transitions, 2195 flow [2024-06-14 12:50:47,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2165, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2195, PETRI_PLACES=339, PETRI_TRANSITIONS=268} [2024-06-14 12:50:47,118 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 308 predicate places. [2024-06-14 12:50:47,118 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 268 transitions, 2195 flow [2024-06-14 12:50:47,118 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 12:50:47,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:47,119 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 12:50:47,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-14 12:50:47,119 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 12:50:47,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:47,119 INFO L85 PathProgramCache]: Analyzing trace with hash 46387953, now seen corresponding path program 5 times [2024-06-14 12:50:47,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:47,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796801809] [2024-06-14 12:50:47,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:47,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:47,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:48,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:50:48,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:48,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796801809] [2024-06-14 12:50:48,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796801809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:48,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:48,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:50:48,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83617989] [2024-06-14 12:50:48,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:48,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:50:48,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:48,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:50:48,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:50:48,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:50:48,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 268 transitions, 2195 flow. Second operand has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:50:48,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:48,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:50:48,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:48,983 INFO L124 PetriNetUnfolderBase]: 543/1078 cut-off events. [2024-06-14 12:50:48,983 INFO L125 PetriNetUnfolderBase]: For 140915/140915 co-relation queries the response was YES. [2024-06-14 12:50:48,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5682 conditions, 1078 events. 543/1078 cut-off events. For 140915/140915 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 6310 event pairs, 47 based on Foata normal form. 8/1084 useless extension candidates. Maximal degree in co-relation 5526. Up to 831 conditions per place. [2024-06-14 12:50:48,993 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 227 selfloop transitions, 49 changer transitions 6/285 dead transitions. [2024-06-14 12:50:48,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 285 transitions, 2861 flow [2024-06-14 12:50:49,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:50:49,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:50:49,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-14 12:50:49,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-14 12:50:49,001 INFO L175 Difference]: Start difference. First operand has 339 places, 268 transitions, 2195 flow. Second operand 11 states and 142 transitions. [2024-06-14 12:50:49,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 285 transitions, 2861 flow [2024-06-14 12:50:49,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 285 transitions, 2809 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 12:50:49,314 INFO L231 Difference]: Finished difference. Result has 336 places, 265 transitions, 2222 flow [2024-06-14 12:50:49,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2143, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2222, PETRI_PLACES=336, PETRI_TRANSITIONS=265} [2024-06-14 12:50:49,314 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 305 predicate places. [2024-06-14 12:50:49,315 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 265 transitions, 2222 flow [2024-06-14 12:50:49,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:50:49,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:49,315 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 12:50:49,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-14 12:50:49,315 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 12:50:49,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:49,315 INFO L85 PathProgramCache]: Analyzing trace with hash 46396323, now seen corresponding path program 6 times [2024-06-14 12:50:49,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:49,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113110674] [2024-06-14 12:50:49,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:49,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:49,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:50,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:50:50,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:50,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113110674] [2024-06-14 12:50:50,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113110674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:50,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:50,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:50:50,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072583951] [2024-06-14 12:50:50,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:50,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:50:50,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:50,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:50:50,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:50:50,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:50:50,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 265 transitions, 2222 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 12:50:50,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:50,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:50:50,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:51,437 INFO L124 PetriNetUnfolderBase]: 556/1107 cut-off events. [2024-06-14 12:50:51,437 INFO L125 PetriNetUnfolderBase]: For 181076/181076 co-relation queries the response was YES. [2024-06-14 12:50:51,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6902 conditions, 1107 events. 556/1107 cut-off events. For 181076/181076 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 6459 event pairs, 53 based on Foata normal form. 6/1111 useless extension candidates. Maximal degree in co-relation 6747. Up to 821 conditions per place. [2024-06-14 12:50:51,456 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 234 selfloop transitions, 41 changer transitions 7/285 dead transitions. [2024-06-14 12:50:51,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 285 transitions, 3178 flow [2024-06-14 12:50:51,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:50:51,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:50:51,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-14 12:50:51,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3802083333333333 [2024-06-14 12:50:51,457 INFO L175 Difference]: Start difference. First operand has 336 places, 265 transitions, 2222 flow. Second operand 12 states and 146 transitions. [2024-06-14 12:50:51,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 285 transitions, 3178 flow [2024-06-14 12:50:51,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 285 transitions, 3071 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-14 12:50:51,870 INFO L231 Difference]: Finished difference. Result has 336 places, 262 transitions, 2179 flow [2024-06-14 12:50:51,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2117, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2179, PETRI_PLACES=336, PETRI_TRANSITIONS=262} [2024-06-14 12:50:51,870 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 305 predicate places. [2024-06-14 12:50:51,871 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 262 transitions, 2179 flow [2024-06-14 12:50:51,871 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 12:50:51,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:51,871 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 12:50:51,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-14 12:50:51,871 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 12:50:51,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:51,872 INFO L85 PathProgramCache]: Analyzing trace with hash 46157313, now seen corresponding path program 7 times [2024-06-14 12:50:51,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:51,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108567932] [2024-06-14 12:50:51,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:51,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:51,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:53,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:50:53,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:53,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108567932] [2024-06-14 12:50:53,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108567932] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:53,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:53,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:50:53,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658809324] [2024-06-14 12:50:53,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:53,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:50:53,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:53,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:50:53,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:50:53,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:50:53,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 262 transitions, 2179 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 12:50:53,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:53,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:50:53,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:54,123 INFO L124 PetriNetUnfolderBase]: 553/1102 cut-off events. [2024-06-14 12:50:54,123 INFO L125 PetriNetUnfolderBase]: For 196631/196631 co-relation queries the response was YES. [2024-06-14 12:50:54,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6889 conditions, 1102 events. 553/1102 cut-off events. For 196631/196631 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 6452 event pairs, 59 based on Foata normal form. 8/1108 useless extension candidates. Maximal degree in co-relation 6734. Up to 874 conditions per place. [2024-06-14 12:50:54,137 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 229 selfloop transitions, 37 changer transitions 9/278 dead transitions. [2024-06-14 12:50:54,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 278 transitions, 2827 flow [2024-06-14 12:50:54,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:50:54,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:50:54,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-14 12:50:54,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3723958333333333 [2024-06-14 12:50:54,138 INFO L175 Difference]: Start difference. First operand has 336 places, 262 transitions, 2179 flow. Second operand 12 states and 143 transitions. [2024-06-14 12:50:54,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 278 transitions, 2827 flow [2024-06-14 12:50:54,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 278 transitions, 2745 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 12:50:54,625 INFO L231 Difference]: Finished difference. Result has 334 places, 259 transitions, 2151 flow [2024-06-14 12:50:54,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2097, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2151, PETRI_PLACES=334, PETRI_TRANSITIONS=259} [2024-06-14 12:50:54,625 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 303 predicate places. [2024-06-14 12:50:54,625 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 259 transitions, 2151 flow [2024-06-14 12:50:54,625 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 12:50:54,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:54,625 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 12:50:54,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-14 12:50:54,625 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 12:50:54,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:54,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1670758091, now seen corresponding path program 8 times [2024-06-14 12:50:54,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:54,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934591578] [2024-06-14 12:50:54,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:54,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:54,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:56,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:50:56,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:56,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934591578] [2024-06-14 12:50:56,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934591578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:56,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:56,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:50:56,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918061145] [2024-06-14 12:50:56,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:56,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:50:56,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:56,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:50:56,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:50:56,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:50:56,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 259 transitions, 2151 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 12:50:56,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:56,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:50:56,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:56,712 INFO L124 PetriNetUnfolderBase]: 566/1137 cut-off events. [2024-06-14 12:50:56,712 INFO L125 PetriNetUnfolderBase]: For 238193/238193 co-relation queries the response was YES. [2024-06-14 12:50:56,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8034 conditions, 1137 events. 566/1137 cut-off events. For 238193/238193 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 6729 event pairs, 67 based on Foata normal form. 6/1141 useless extension candidates. Maximal degree in co-relation 7880. Up to 901 conditions per place. [2024-06-14 12:50:56,731 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 245 selfloop transitions, 24 changer transitions 7/279 dead transitions. [2024-06-14 12:50:56,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 279 transitions, 3093 flow [2024-06-14 12:50:56,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:50:56,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:50:56,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-14 12:50:56,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-14 12:50:56,732 INFO L175 Difference]: Start difference. First operand has 334 places, 259 transitions, 2151 flow. Second operand 12 states and 141 transitions. [2024-06-14 12:50:56,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 279 transitions, 3093 flow [2024-06-14 12:50:57,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 279 transitions, 3011 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 12:50:57,471 INFO L231 Difference]: Finished difference. Result has 332 places, 256 transitions, 2099 flow [2024-06-14 12:50:57,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2073, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2099, PETRI_PLACES=332, PETRI_TRANSITIONS=256} [2024-06-14 12:50:57,471 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 301 predicate places. [2024-06-14 12:50:57,471 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 256 transitions, 2099 flow [2024-06-14 12:50:57,472 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 12:50:57,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:50:57,472 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 12:50:57,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-14 12:50:57,472 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 12:50:57,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:50:57,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1670997101, now seen corresponding path program 9 times [2024-06-14 12:50:57,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:50:57,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464704036] [2024-06-14 12:50:57,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:50:57,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:50:57,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:50:58,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:50:58,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:50:58,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464704036] [2024-06-14 12:50:58,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464704036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:50:58,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:50:58,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:50:58,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573069586] [2024-06-14 12:50:58,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:50:58,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:50:58,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:50:58,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:50:58,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:50:59,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:50:59,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 256 transitions, 2099 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 12:50:59,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:50:59,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:50:59,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:50:59,633 INFO L124 PetriNetUnfolderBase]: 541/1078 cut-off events. [2024-06-14 12:50:59,633 INFO L125 PetriNetUnfolderBase]: For 191949/191949 co-relation queries the response was YES. [2024-06-14 12:50:59,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6733 conditions, 1078 events. 541/1078 cut-off events. For 191949/191949 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 6287 event pairs, 57 based on Foata normal form. 8/1084 useless extension candidates. Maximal degree in co-relation 6580. Up to 913 conditions per place. [2024-06-14 12:50:59,644 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 240 selfloop transitions, 24 changer transitions 7/274 dead transitions. [2024-06-14 12:50:59,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 274 transitions, 2745 flow [2024-06-14 12:50:59,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:50:59,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:50:59,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-14 12:50:59,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3697916666666667 [2024-06-14 12:50:59,645 INFO L175 Difference]: Start difference. First operand has 332 places, 256 transitions, 2099 flow. Second operand 12 states and 142 transitions. [2024-06-14 12:50:59,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 274 transitions, 2745 flow [2024-06-14 12:51:00,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 274 transitions, 2695 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 12:51:00,123 INFO L231 Difference]: Finished difference. Result has 330 places, 253 transitions, 2079 flow [2024-06-14 12:51:00,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2049, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2079, PETRI_PLACES=330, PETRI_TRANSITIONS=253} [2024-06-14 12:51:00,123 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 299 predicate places. [2024-06-14 12:51:00,123 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 253 transitions, 2079 flow [2024-06-14 12:51:00,123 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 12:51:00,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:51:00,123 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 12:51:00,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-14 12:51:00,123 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 12:51:00,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:51:00,124 INFO L85 PathProgramCache]: Analyzing trace with hash 39901203, now seen corresponding path program 10 times [2024-06-14 12:51:00,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:51:00,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807001610] [2024-06-14 12:51:00,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:51:00,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:51:00,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:51:01,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:51:01,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:51:01,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807001610] [2024-06-14 12:51:01,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807001610] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:51:01,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:51:01,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:51:01,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130347518] [2024-06-14 12:51:01,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:51:01,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:51:01,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:51:01,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:51:01,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:51:02,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:51:02,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 253 transitions, 2079 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 12:51:02,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:51:02,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:51:02,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:51:02,770 INFO L124 PetriNetUnfolderBase]: 514/1025 cut-off events. [2024-06-14 12:51:02,770 INFO L125 PetriNetUnfolderBase]: For 130635/130635 co-relation queries the response was YES. [2024-06-14 12:51:02,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5445 conditions, 1025 events. 514/1025 cut-off events. For 130635/130635 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 5943 event pairs, 45 based on Foata normal form. 8/1031 useless extension candidates. Maximal degree in co-relation 5293. Up to 822 conditions per place. [2024-06-14 12:51:02,781 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 224 selfloop transitions, 35 changer transitions 9/271 dead transitions. [2024-06-14 12:51:02,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 271 transitions, 2719 flow [2024-06-14 12:51:02,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:51:02,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:51:02,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-14 12:51:02,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3802083333333333 [2024-06-14 12:51:02,782 INFO L175 Difference]: Start difference. First operand has 330 places, 253 transitions, 2079 flow. Second operand 12 states and 146 transitions. [2024-06-14 12:51:02,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 271 transitions, 2719 flow [2024-06-14 12:51:03,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 271 transitions, 2665 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-14 12:51:03,082 INFO L231 Difference]: Finished difference. Result has 327 places, 250 transitions, 2076 flow [2024-06-14 12:51:03,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2025, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2076, PETRI_PLACES=327, PETRI_TRANSITIONS=250} [2024-06-14 12:51:03,083 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 296 predicate places. [2024-06-14 12:51:03,083 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 250 transitions, 2076 flow [2024-06-14 12:51:03,083 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 12:51:03,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:51:03,083 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 12:51:03,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-14 12:51:03,083 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 12:51:03,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:51:03,083 INFO L85 PathProgramCache]: Analyzing trace with hash 267802353, now seen corresponding path program 11 times [2024-06-14 12:51:03,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:51:03,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509746004] [2024-06-14 12:51:03,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:51:03,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:51:03,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:51:04,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:51:04,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:51:04,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509746004] [2024-06-14 12:51:04,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509746004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:51:04,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:51:04,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:51:04,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841461662] [2024-06-14 12:51:04,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:51:04,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:51:04,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:51:04,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:51:04,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:51:04,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:51:04,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 250 transitions, 2076 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 12:51:04,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:51:04,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:51:04,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:51:05,096 INFO L124 PetriNetUnfolderBase]: 509/1022 cut-off events. [2024-06-14 12:51:05,096 INFO L125 PetriNetUnfolderBase]: For 128471/128471 co-relation queries the response was YES. [2024-06-14 12:51:05,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5418 conditions, 1022 events. 509/1022 cut-off events. For 128471/128471 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 5947 event pairs, 47 based on Foata normal form. 8/1028 useless extension candidates. Maximal degree in co-relation 5267. Up to 787 conditions per place. [2024-06-14 12:51:05,107 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 211 selfloop transitions, 37 changer transitions 17/268 dead transitions. [2024-06-14 12:51:05,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 268 transitions, 2710 flow [2024-06-14 12:51:05,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:51:05,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:51:05,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-14 12:51:05,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880208333333333 [2024-06-14 12:51:05,108 INFO L175 Difference]: Start difference. First operand has 327 places, 250 transitions, 2076 flow. Second operand 12 states and 149 transitions. [2024-06-14 12:51:05,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 268 transitions, 2710 flow [2024-06-14 12:51:05,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 268 transitions, 2636 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 12:51:05,418 INFO L231 Difference]: Finished difference. Result has 324 places, 240 transitions, 2001 flow [2024-06-14 12:51:05,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2002, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2001, PETRI_PLACES=324, PETRI_TRANSITIONS=240} [2024-06-14 12:51:05,419 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 293 predicate places. [2024-06-14 12:51:05,419 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 240 transitions, 2001 flow [2024-06-14 12:51:05,419 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 12:51:05,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:51:05,419 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 12:51:05,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-14 12:51:05,419 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 12:51:05,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:51:05,419 INFO L85 PathProgramCache]: Analyzing trace with hash 276373233, now seen corresponding path program 12 times [2024-06-14 12:51:05,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:51:05,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204046407] [2024-06-14 12:51:05,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:51:05,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:51:05,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:51:06,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:51:06,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:51:06,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204046407] [2024-06-14 12:51:06,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204046407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:51:06,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:51:06,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:51:06,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079080542] [2024-06-14 12:51:06,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:51:06,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:51:06,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:51:06,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:51:06,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:51:06,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:51:06,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 240 transitions, 2001 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 12:51:06,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:51:06,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:51:06,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:51:07,462 INFO L124 PetriNetUnfolderBase]: 508/1035 cut-off events. [2024-06-14 12:51:07,462 INFO L125 PetriNetUnfolderBase]: For 168031/168031 co-relation queries the response was YES. [2024-06-14 12:51:07,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6451 conditions, 1035 events. 508/1035 cut-off events. For 168031/168031 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6029 event pairs, 57 based on Foata normal form. 6/1039 useless extension candidates. Maximal degree in co-relation 6301. Up to 689 conditions per place. [2024-06-14 12:51:07,472 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 216 selfloop transitions, 34 changer transitions 9/262 dead transitions. [2024-06-14 12:51:07,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 262 transitions, 2907 flow [2024-06-14 12:51:07,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:51:07,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:51:07,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-14 12:51:07,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-14 12:51:07,473 INFO L175 Difference]: Start difference. First operand has 324 places, 240 transitions, 2001 flow. Second operand 11 states and 141 transitions. [2024-06-14 12:51:07,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 262 transitions, 2907 flow [2024-06-14 12:51:08,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 262 transitions, 2769 flow, removed 10 selfloop flow, removed 14 redundant places. [2024-06-14 12:51:08,005 INFO L231 Difference]: Finished difference. Result has 314 places, 237 transitions, 1923 flow [2024-06-14 12:51:08,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1871, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1923, PETRI_PLACES=314, PETRI_TRANSITIONS=237} [2024-06-14 12:51:08,005 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 283 predicate places. [2024-06-14 12:51:08,005 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 237 transitions, 1923 flow [2024-06-14 12:51:08,005 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 12:51:08,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:51:08,005 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 12:51:08,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-14 12:51:08,006 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 12:51:08,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:51:08,006 INFO L85 PathProgramCache]: Analyzing trace with hash 276084933, now seen corresponding path program 13 times [2024-06-14 12:51:08,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:51:08,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707899899] [2024-06-14 12:51:08,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:51:08,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:51:08,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:51:09,592 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 12:51:09,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:51:09,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707899899] [2024-06-14 12:51:09,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707899899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:51:09,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:51:09,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:51:09,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681584660] [2024-06-14 12:51:09,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:51:09,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:51:09,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:51:09,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:51:09,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:51:09,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:51:09,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 237 transitions, 1923 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 12:51:09,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:51:09,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:51:09,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:51:10,248 INFO L124 PetriNetUnfolderBase]: 498/1013 cut-off events. [2024-06-14 12:51:10,248 INFO L125 PetriNetUnfolderBase]: For 159485/159485 co-relation queries the response was YES. [2024-06-14 12:51:10,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6246 conditions, 1013 events. 498/1013 cut-off events. For 159485/159485 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 5869 event pairs, 55 based on Foata normal form. 6/1017 useless extension candidates. Maximal degree in co-relation 6101. Up to 784 conditions per place. [2024-06-14 12:51:10,258 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 205 selfloop transitions, 34 changer transitions 11/253 dead transitions. [2024-06-14 12:51:10,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 253 transitions, 2497 flow [2024-06-14 12:51:10,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:51:10,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:51:10,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-14 12:51:10,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619791666666667 [2024-06-14 12:51:10,259 INFO L175 Difference]: Start difference. First operand has 314 places, 237 transitions, 1923 flow. Second operand 12 states and 139 transitions. [2024-06-14 12:51:10,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 253 transitions, 2497 flow [2024-06-14 12:51:10,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 253 transitions, 2431 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 12:51:10,808 INFO L231 Difference]: Finished difference. Result has 312 places, 233 transitions, 1899 flow [2024-06-14 12:51:10,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1857, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1899, PETRI_PLACES=312, PETRI_TRANSITIONS=233} [2024-06-14 12:51:10,808 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 281 predicate places. [2024-06-14 12:51:10,808 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 233 transitions, 1899 flow [2024-06-14 12:51:10,809 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 12:51:10,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:51:10,809 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 12:51:10,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-14 12:51:10,809 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 12:51:10,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:51:10,810 INFO L85 PathProgramCache]: Analyzing trace with hash 368194589, now seen corresponding path program 14 times [2024-06-14 12:51:10,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:51:10,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754508349] [2024-06-14 12:51:10,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:51:10,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:51:10,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:51:12,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:51:12,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:51:12,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754508349] [2024-06-14 12:51:12,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754508349] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:51:12,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:51:12,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:51:12,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609715509] [2024-06-14 12:51:12,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:51:12,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:51:12,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:51:12,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:51:12,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:51:12,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:51:12,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 233 transitions, 1899 flow. Second operand has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:51:12,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:51:12,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:51:12,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:51:12,556 INFO L124 PetriNetUnfolderBase]: 483/980 cut-off events. [2024-06-14 12:51:12,557 INFO L125 PetriNetUnfolderBase]: For 140377/140377 co-relation queries the response was YES. [2024-06-14 12:51:12,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5789 conditions, 980 events. 483/980 cut-off events. For 140377/140377 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 5604 event pairs, 52 based on Foata normal form. 6/984 useless extension candidates. Maximal degree in co-relation 5646. Up to 782 conditions per place. [2024-06-14 12:51:12,566 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 204 selfloop transitions, 31 changer transitions 12/250 dead transitions. [2024-06-14 12:51:12,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 250 transitions, 2471 flow [2024-06-14 12:51:12,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:51:12,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:51:12,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-14 12:51:12,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-14 12:51:12,567 INFO L175 Difference]: Start difference. First operand has 312 places, 233 transitions, 1899 flow. Second operand 11 states and 133 transitions. [2024-06-14 12:51:12,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 250 transitions, 2471 flow [2024-06-14 12:51:12,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 250 transitions, 2379 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-06-14 12:51:12,964 INFO L231 Difference]: Finished difference. Result has 305 places, 228 transitions, 1840 flow [2024-06-14 12:51:12,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1807, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1840, PETRI_PLACES=305, PETRI_TRANSITIONS=228} [2024-06-14 12:51:12,965 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 274 predicate places. [2024-06-14 12:51:12,965 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 228 transitions, 1840 flow [2024-06-14 12:51:12,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:51:12,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:51:12,965 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 12:51:12,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-14 12:51:12,965 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 12:51:12,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:51:12,965 INFO L85 PathProgramCache]: Analyzing trace with hash -268150141, now seen corresponding path program 21 times [2024-06-14 12:51:12,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:51:12,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797154569] [2024-06-14 12:51:12,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:51:12,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:51:12,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:51:14,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:51:14,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:51:14,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797154569] [2024-06-14 12:51:14,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797154569] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:51:14,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:51:14,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:51:14,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366333811] [2024-06-14 12:51:14,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:51:14,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:51:14,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:51:14,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:51:14,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:51:14,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:51:14,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 228 transitions, 1840 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 12:51:14,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:51:14,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:51:14,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:51:15,302 INFO L124 PetriNetUnfolderBase]: 470/943 cut-off events. [2024-06-14 12:51:15,303 INFO L125 PetriNetUnfolderBase]: For 114867/114867 co-relation queries the response was YES. [2024-06-14 12:51:15,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5643 conditions, 943 events. 470/943 cut-off events. For 114867/114867 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 5326 event pairs, 61 based on Foata normal form. 2/940 useless extension candidates. Maximal degree in co-relation 5501. Up to 565 conditions per place. [2024-06-14 12:51:15,312 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 122 selfloop transitions, 116 changer transitions 0/241 dead transitions. [2024-06-14 12:51:15,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 241 transitions, 2398 flow [2024-06-14 12:51:15,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:51:15,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:51:15,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-14 12:51:15,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-14 12:51:15,313 INFO L175 Difference]: Start difference. First operand has 305 places, 228 transitions, 1840 flow. Second operand 12 states and 148 transitions. [2024-06-14 12:51:15,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 241 transitions, 2398 flow [2024-06-14 12:51:15,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 241 transitions, 2303 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-14 12:51:15,617 INFO L231 Difference]: Finished difference. Result has 298 places, 229 transitions, 2022 flow [2024-06-14 12:51:15,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1750, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2022, PETRI_PLACES=298, PETRI_TRANSITIONS=229} [2024-06-14 12:51:15,618 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 267 predicate places. [2024-06-14 12:51:15,618 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 229 transitions, 2022 flow [2024-06-14 12:51:15,618 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 12:51:15,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:51:15,618 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 12:51:15,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-14 12:51:15,618 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 12:51:15,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:51:15,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1970359301, now seen corresponding path program 22 times [2024-06-14 12:51:15,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:51:15,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287668427] [2024-06-14 12:51:15,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:51:15,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:51:15,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:51:17,135 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 12:51:17,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:51:17,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287668427] [2024-06-14 12:51:17,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287668427] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:51:17,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:51:17,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:51:17,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729357182] [2024-06-14 12:51:17,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:51:17,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:51:17,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:51:17,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:51:17,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:51:17,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:51:17,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 229 transitions, 2022 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 12:51:17,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:51:17,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:51:17,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:51:17,649 INFO L124 PetriNetUnfolderBase]: 481/967 cut-off events. [2024-06-14 12:51:17,650 INFO L125 PetriNetUnfolderBase]: For 122639/122642 co-relation queries the response was YES. [2024-06-14 12:51:17,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6139 conditions, 967 events. 481/967 cut-off events. For 122639/122642 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 5503 event pairs, 59 based on Foata normal form. 2/964 useless extension candidates. Maximal degree in co-relation 6001. Up to 679 conditions per place. [2024-06-14 12:51:17,660 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 168 selfloop transitions, 74 changer transitions 0/245 dead transitions. [2024-06-14 12:51:17,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 245 transitions, 2832 flow [2024-06-14 12:51:17,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:51:17,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:51:17,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-14 12:51:17,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39488636363636365 [2024-06-14 12:51:17,661 INFO L175 Difference]: Start difference. First operand has 298 places, 229 transitions, 2022 flow. Second operand 11 states and 139 transitions. [2024-06-14 12:51:17,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 245 transitions, 2832 flow [2024-06-14 12:51:18,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 245 transitions, 2568 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-14 12:51:18,065 INFO L231 Difference]: Finished difference. Result has 299 places, 231 transitions, 1986 flow [2024-06-14 12:51:18,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1760, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1986, PETRI_PLACES=299, PETRI_TRANSITIONS=231} [2024-06-14 12:51:18,066 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 268 predicate places. [2024-06-14 12:51:18,066 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 231 transitions, 1986 flow [2024-06-14 12:51:18,066 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 12:51:18,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:51:18,066 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 12:51:18,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-14 12:51:18,066 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 12:51:18,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:51:18,066 INFO L85 PathProgramCache]: Analyzing trace with hash 89180931, now seen corresponding path program 23 times [2024-06-14 12:51:18,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:51:18,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997414429] [2024-06-14 12:51:18,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:51:18,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:51:18,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:51:19,280 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 12:51:19,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:51:19,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997414429] [2024-06-14 12:51:19,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997414429] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:51:19,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:51:19,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:51:19,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331970742] [2024-06-14 12:51:19,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:51:19,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:51:19,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:51:19,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:51:19,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:51:19,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:51:19,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 231 transitions, 1986 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 12:51:19,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:51:19,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:51:19,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:51:19,851 INFO L124 PetriNetUnfolderBase]: 497/1003 cut-off events. [2024-06-14 12:51:19,851 INFO L125 PetriNetUnfolderBase]: For 172454/172457 co-relation queries the response was YES. [2024-06-14 12:51:19,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6291 conditions, 1003 events. 497/1003 cut-off events. For 172454/172457 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 5756 event pairs, 65 based on Foata normal form. 10/1008 useless extension candidates. Maximal degree in co-relation 6152. Up to 611 conditions per place. [2024-06-14 12:51:19,861 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 137 selfloop transitions, 101 changer transitions 6/247 dead transitions. [2024-06-14 12:51:19,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 247 transitions, 2602 flow [2024-06-14 12:51:19,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:51:19,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:51:19,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-14 12:51:19,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-14 12:51:19,862 INFO L175 Difference]: Start difference. First operand has 299 places, 231 transitions, 1986 flow. Second operand 11 states and 146 transitions. [2024-06-14 12:51:19,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 247 transitions, 2602 flow [2024-06-14 12:51:20,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 247 transitions, 2466 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-14 12:51:20,253 INFO L231 Difference]: Finished difference. Result has 303 places, 229 transitions, 2079 flow [2024-06-14 12:51:20,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1854, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2079, PETRI_PLACES=303, PETRI_TRANSITIONS=229} [2024-06-14 12:51:20,254 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 272 predicate places. [2024-06-14 12:51:20,254 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 229 transitions, 2079 flow [2024-06-14 12:51:20,254 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 12:51:20,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:51:20,254 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 12:51:20,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-14 12:51:20,254 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 12:51:20,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:51:20,254 INFO L85 PathProgramCache]: Analyzing trace with hash 310825971, now seen corresponding path program 24 times [2024-06-14 12:51:20,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:51:20,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638819605] [2024-06-14 12:51:20,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:51:20,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:51:20,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:51:21,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:51:21,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:51:21,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638819605] [2024-06-14 12:51:21,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638819605] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:51:21,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:51:21,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:51:21,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134353441] [2024-06-14 12:51:21,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:51:21,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:51:21,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:51:21,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:51:21,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:51:21,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:51:21,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 229 transitions, 2079 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 12:51:21,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:51:21,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:51:21,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:51:22,106 INFO L124 PetriNetUnfolderBase]: 496/1006 cut-off events. [2024-06-14 12:51:22,107 INFO L125 PetriNetUnfolderBase]: For 175364/175367 co-relation queries the response was YES. [2024-06-14 12:51:22,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6450 conditions, 1006 events. 496/1006 cut-off events. For 175364/175367 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5769 event pairs, 67 based on Foata normal form. 10/1011 useless extension candidates. Maximal degree in co-relation 6309. Up to 615 conditions per place. [2024-06-14 12:51:22,119 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 139 selfloop transitions, 96 changer transitions 7/245 dead transitions. [2024-06-14 12:51:22,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 245 transitions, 2689 flow [2024-06-14 12:51:22,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:51:22,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:51:22,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-14 12:51:22,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42045454545454547 [2024-06-14 12:51:22,120 INFO L175 Difference]: Start difference. First operand has 303 places, 229 transitions, 2079 flow. Second operand 11 states and 148 transitions. [2024-06-14 12:51:22,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 245 transitions, 2689 flow [2024-06-14 12:51:22,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 245 transitions, 2457 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-14 12:51:22,489 INFO L231 Difference]: Finished difference. Result has 303 places, 226 transitions, 2053 flow [2024-06-14 12:51:22,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1847, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2053, PETRI_PLACES=303, PETRI_TRANSITIONS=226} [2024-06-14 12:51:22,489 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 272 predicate places. [2024-06-14 12:51:22,489 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 226 transitions, 2053 flow [2024-06-14 12:51:22,489 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 12:51:22,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:51:22,489 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 12:51:22,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-14 12:51:22,490 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 12:51:22,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:51:22,490 INFO L85 PathProgramCache]: Analyzing trace with hash -349047855, now seen corresponding path program 25 times [2024-06-14 12:51:22,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:51:22,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534538603] [2024-06-14 12:51:22,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:51:22,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:51:22,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:51:24,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:51:24,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:51:24,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534538603] [2024-06-14 12:51:24,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534538603] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:51:24,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:51:24,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:51:24,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163348836] [2024-06-14 12:51:24,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:51:24,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:51:24,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:51:24,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:51:24,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:51:24,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:51:24,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 226 transitions, 2053 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 12:51:24,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:51:24,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:51:24,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:51:25,045 INFO L124 PetriNetUnfolderBase]: 481/975 cut-off events. [2024-06-14 12:51:25,045 INFO L125 PetriNetUnfolderBase]: For 127286/127289 co-relation queries the response was YES. [2024-06-14 12:51:25,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6270 conditions, 975 events. 481/975 cut-off events. For 127286/127289 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5567 event pairs, 63 based on Foata normal form. 2/972 useless extension candidates. Maximal degree in co-relation 6129. Up to 806 conditions per place. [2024-06-14 12:51:25,055 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 190 selfloop transitions, 46 changer transitions 0/239 dead transitions. [2024-06-14 12:51:25,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 239 transitions, 2591 flow [2024-06-14 12:51:25,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:51:25,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:51:25,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-14 12:51:25,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-14 12:51:25,056 INFO L175 Difference]: Start difference. First operand has 303 places, 226 transitions, 2053 flow. Second operand 11 states and 134 transitions. [2024-06-14 12:51:25,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 239 transitions, 2591 flow [2024-06-14 12:51:25,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 239 transitions, 2366 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-14 12:51:25,465 INFO L231 Difference]: Finished difference. Result has 304 places, 227 transitions, 1964 flow [2024-06-14 12:51:25,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1828, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1964, PETRI_PLACES=304, PETRI_TRANSITIONS=227} [2024-06-14 12:51:25,465 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 273 predicate places. [2024-06-14 12:51:25,465 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 227 transitions, 1964 flow [2024-06-14 12:51:25,465 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 12:51:25,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:51:25,466 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 12:51:25,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-14 12:51:25,466 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 12:51:25,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:51:25,466 INFO L85 PathProgramCache]: Analyzing trace with hash -576949005, now seen corresponding path program 26 times [2024-06-14 12:51:25,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:51:25,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564327410] [2024-06-14 12:51:25,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:51:25,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:51:25,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:51:26,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:51:26,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:51:26,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564327410] [2024-06-14 12:51:26,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564327410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:51:26,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:51:26,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:51:26,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048272898] [2024-06-14 12:51:26,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:51:26,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:51:26,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:51:26,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:51:26,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:51:26,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:51:26,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 227 transitions, 1964 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 12:51:26,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:51:26,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:51:26,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:51:27,332 INFO L124 PetriNetUnfolderBase]: 485/979 cut-off events. [2024-06-14 12:51:27,332 INFO L125 PetriNetUnfolderBase]: For 129592/129595 co-relation queries the response was YES. [2024-06-14 12:51:27,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6223 conditions, 979 events. 485/979 cut-off events. For 129592/129595 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 5595 event pairs, 61 based on Foata normal form. 2/976 useless extension candidates. Maximal degree in co-relation 6081. Up to 772 conditions per place. [2024-06-14 12:51:27,342 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 171 selfloop transitions, 66 changer transitions 0/240 dead transitions. [2024-06-14 12:51:27,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 240 transitions, 2506 flow [2024-06-14 12:51:27,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:51:27,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:51:27,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-14 12:51:27,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39488636363636365 [2024-06-14 12:51:27,343 INFO L175 Difference]: Start difference. First operand has 304 places, 227 transitions, 1964 flow. Second operand 11 states and 139 transitions. [2024-06-14 12:51:27,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 240 transitions, 2506 flow [2024-06-14 12:51:27,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 240 transitions, 2380 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-14 12:51:27,725 INFO L231 Difference]: Finished difference. Result has 306 places, 228 transitions, 2016 flow [2024-06-14 12:51:27,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1838, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2016, PETRI_PLACES=306, PETRI_TRANSITIONS=228} [2024-06-14 12:51:27,726 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 275 predicate places. [2024-06-14 12:51:27,726 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 228 transitions, 2016 flow [2024-06-14 12:51:27,726 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 12:51:27,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:51:27,727 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 12:51:27,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-14 12:51:27,727 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 12:51:27,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:51:27,727 INFO L85 PathProgramCache]: Analyzing trace with hash -586105903, now seen corresponding path program 27 times [2024-06-14 12:51:27,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:51:27,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552113656] [2024-06-14 12:51:27,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:51:27,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:51:27,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:51:29,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:51:29,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:51:29,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552113656] [2024-06-14 12:51:29,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552113656] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:51:29,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:51:29,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:51:29,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045393693] [2024-06-14 12:51:29,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:51:29,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:51:29,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:51:29,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:51:29,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:51:29,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:51:29,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 228 transitions, 2016 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 12:51:29,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:51:29,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:51:29,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:51:29,680 INFO L124 PetriNetUnfolderBase]: 494/1001 cut-off events. [2024-06-14 12:51:29,681 INFO L125 PetriNetUnfolderBase]: For 168282/168282 co-relation queries the response was YES. [2024-06-14 12:51:29,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6115 conditions, 1001 events. 494/1001 cut-off events. For 168282/168282 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5778 event pairs, 61 based on Foata normal form. 10/1009 useless extension candidates. Maximal degree in co-relation 5972. Up to 859 conditions per place. [2024-06-14 12:51:29,689 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 207 selfloop transitions, 25 changer transitions 8/243 dead transitions. [2024-06-14 12:51:29,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 243 transitions, 2586 flow [2024-06-14 12:51:29,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:51:29,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:51:29,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-14 12:51:29,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-14 12:51:29,689 INFO L175 Difference]: Start difference. First operand has 306 places, 228 transitions, 2016 flow. Second operand 11 states and 133 transitions. [2024-06-14 12:51:29,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 243 transitions, 2586 flow [2024-06-14 12:51:30,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 243 transitions, 2390 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-14 12:51:30,087 INFO L231 Difference]: Finished difference. Result has 308 places, 223 transitions, 1839 flow [2024-06-14 12:51:30,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1820, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1839, PETRI_PLACES=308, PETRI_TRANSITIONS=223} [2024-06-14 12:51:30,087 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 277 predicate places. [2024-06-14 12:51:30,087 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 223 transitions, 1839 flow [2024-06-14 12:51:30,088 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 12:51:30,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:51:30,088 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 12:51:30,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-14 12:51:30,088 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 12:51:30,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:51:30,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1621150459, now seen corresponding path program 28 times [2024-06-14 12:51:30,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:51:30,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088648139] [2024-06-14 12:51:30,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:51:30,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:51:30,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:51:31,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:51:31,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:51:31,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088648139] [2024-06-14 12:51:31,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088648139] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:51:31,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:51:31,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:51:31,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375664973] [2024-06-14 12:51:31,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:51:31,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:51:31,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:51:31,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:51:31,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:51:31,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:51:31,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 223 transitions, 1839 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 12:51:31,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:51:31,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:51:31,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:51:31,848 INFO L124 PetriNetUnfolderBase]: 485/993 cut-off events. [2024-06-14 12:51:31,848 INFO L125 PetriNetUnfolderBase]: For 154636/154639 co-relation queries the response was YES. [2024-06-14 12:51:31,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5879 conditions, 993 events. 485/993 cut-off events. For 154636/154639 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5738 event pairs, 64 based on Foata normal form. 8/996 useless extension candidates. Maximal degree in co-relation 5735. Up to 836 conditions per place. [2024-06-14 12:51:31,858 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 203 selfloop transitions, 22 changer transitions 11/239 dead transitions. [2024-06-14 12:51:31,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 239 transitions, 2407 flow [2024-06-14 12:51:31,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:51:31,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:51:31,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-14 12:51:31,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-14 12:51:31,859 INFO L175 Difference]: Start difference. First operand has 308 places, 223 transitions, 1839 flow. Second operand 11 states and 129 transitions. [2024-06-14 12:51:31,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 239 transitions, 2407 flow [2024-06-14 12:51:32,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 239 transitions, 2330 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-14 12:51:32,257 INFO L231 Difference]: Finished difference. Result has 307 places, 220 transitions, 1784 flow [2024-06-14 12:51:32,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1762, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1784, PETRI_PLACES=307, PETRI_TRANSITIONS=220} [2024-06-14 12:51:32,257 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 276 predicate places. [2024-06-14 12:51:32,257 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 220 transitions, 1784 flow [2024-06-14 12:51:32,257 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 12:51:32,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:51:32,257 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 12:51:32,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-14 12:51:32,257 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 12:51:32,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:51:32,258 INFO L85 PathProgramCache]: Analyzing trace with hash -790428643, now seen corresponding path program 29 times [2024-06-14 12:51:32,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:51:32,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145684384] [2024-06-14 12:51:32,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:51:32,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:51:32,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:51:33,606 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 12:51:33,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:51:33,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145684384] [2024-06-14 12:51:33,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145684384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:51:33,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:51:33,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:51:33,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400161400] [2024-06-14 12:51:33,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:51:33,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:51:33,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:51:33,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:51:33,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:51:33,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:51:33,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 220 transitions, 1784 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 12:51:33,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:51:33,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:51:33,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:51:34,233 INFO L124 PetriNetUnfolderBase]: 499/1015 cut-off events. [2024-06-14 12:51:34,233 INFO L125 PetriNetUnfolderBase]: For 187610/187613 co-relation queries the response was YES. [2024-06-14 12:51:34,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7281 conditions, 1015 events. 499/1015 cut-off events. For 187610/187613 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5831 event pairs, 75 based on Foata normal form. 2/1012 useless extension candidates. Maximal degree in co-relation 7137. Up to 726 conditions per place. [2024-06-14 12:51:34,243 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 169 selfloop transitions, 67 changer transitions 0/239 dead transitions. [2024-06-14 12:51:34,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 239 transitions, 2666 flow [2024-06-14 12:51:34,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:51:34,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:51:34,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-14 12:51:34,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-14 12:51:34,244 INFO L175 Difference]: Start difference. First operand has 307 places, 220 transitions, 1784 flow. Second operand 11 states and 144 transitions. [2024-06-14 12:51:34,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 239 transitions, 2666 flow [2024-06-14 12:51:34,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 239 transitions, 2555 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-14 12:51:34,930 INFO L231 Difference]: Finished difference. Result has 302 places, 222 transitions, 1901 flow [2024-06-14 12:51:34,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1677, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1901, PETRI_PLACES=302, PETRI_TRANSITIONS=222} [2024-06-14 12:51:34,931 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 271 predicate places. [2024-06-14 12:51:34,931 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 222 transitions, 1901 flow [2024-06-14 12:51:34,931 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 12:51:34,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:51:34,932 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 12:51:34,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-14 12:51:34,932 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 12:51:34,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:51:34,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1616566489, now seen corresponding path program 30 times [2024-06-14 12:51:34,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:51:34,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222807680] [2024-06-14 12:51:34,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:51:34,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:51:34,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:51:36,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:51:36,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:51:36,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222807680] [2024-06-14 12:51:36,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222807680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:51:36,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:51:36,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:51:36,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138712999] [2024-06-14 12:51:36,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:51:36,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:51:36,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:51:36,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:51:36,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:51:36,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:51:36,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 222 transitions, 1901 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 12:51:36,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:51:36,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:51:36,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:51:36,862 INFO L124 PetriNetUnfolderBase]: 503/1023 cut-off events. [2024-06-14 12:51:36,863 INFO L125 PetriNetUnfolderBase]: For 185546/185549 co-relation queries the response was YES. [2024-06-14 12:51:36,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7411 conditions, 1023 events. 503/1023 cut-off events. For 185546/185549 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5917 event pairs, 73 based on Foata normal form. 2/1020 useless extension candidates. Maximal degree in co-relation 7269. Up to 889 conditions per place. [2024-06-14 12:51:36,873 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 209 selfloop transitions, 25 changer transitions 0/237 dead transitions. [2024-06-14 12:51:36,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 237 transitions, 2445 flow [2024-06-14 12:51:36,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:51:36,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:51:36,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-14 12:51:36,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-14 12:51:36,874 INFO L175 Difference]: Start difference. First operand has 302 places, 222 transitions, 1901 flow. Second operand 11 states and 127 transitions. [2024-06-14 12:51:36,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 237 transitions, 2445 flow [2024-06-14 12:51:37,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 237 transitions, 2317 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-14 12:51:37,489 INFO L231 Difference]: Finished difference. Result has 306 places, 223 transitions, 1873 flow [2024-06-14 12:51:37,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1773, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1873, PETRI_PLACES=306, PETRI_TRANSITIONS=223} [2024-06-14 12:51:37,490 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 275 predicate places. [2024-06-14 12:51:37,490 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 223 transitions, 1873 flow [2024-06-14 12:51:37,490 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 12:51:37,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:51:37,490 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 12:51:37,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-14 12:51:37,491 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 12:51:37,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:51:37,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1793817979, now seen corresponding path program 31 times [2024-06-14 12:51:37,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:51:37,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222406518] [2024-06-14 12:51:37,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:51:37,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:51:37,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:51:38,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:51:38,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:51:38,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222406518] [2024-06-14 12:51:38,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222406518] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:51:38,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:51:38,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:51:38,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561885980] [2024-06-14 12:51:38,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:51:38,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:51:38,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:51:38,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:51:38,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:51:38,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:51:38,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 223 transitions, 1873 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 12:51:38,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:51:38,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:51:38,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:51:39,329 INFO L124 PetriNetUnfolderBase]: 519/1059 cut-off events. [2024-06-14 12:51:39,329 INFO L125 PetriNetUnfolderBase]: For 240661/240664 co-relation queries the response was YES. [2024-06-14 12:51:39,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7644 conditions, 1059 events. 519/1059 cut-off events. For 240661/240664 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6185 event pairs, 81 based on Foata normal form. 10/1064 useless extension candidates. Maximal degree in co-relation 7500. Up to 882 conditions per place. [2024-06-14 12:51:39,339 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 196 selfloop transitions, 34 changer transitions 6/239 dead transitions. [2024-06-14 12:51:39,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 239 transitions, 2481 flow [2024-06-14 12:51:39,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:51:39,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:51:39,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-14 12:51:39,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-14 12:51:39,340 INFO L175 Difference]: Start difference. First operand has 306 places, 223 transitions, 1873 flow. Second operand 11 states and 136 transitions. [2024-06-14 12:51:39,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 239 transitions, 2481 flow [2024-06-14 12:51:39,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 239 transitions, 2391 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-14 12:51:39,942 INFO L231 Difference]: Finished difference. Result has 308 places, 221 transitions, 1882 flow [2024-06-14 12:51:39,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1783, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1882, PETRI_PLACES=308, PETRI_TRANSITIONS=221} [2024-06-14 12:51:39,943 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 277 predicate places. [2024-06-14 12:51:39,943 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 221 transitions, 1882 flow [2024-06-14 12:51:39,943 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 12:51:39,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:51:39,943 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 12:51:39,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-14 12:51:39,943 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 12:51:39,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:51:39,943 INFO L85 PathProgramCache]: Analyzing trace with hash -783994903, now seen corresponding path program 32 times [2024-06-14 12:51:39,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:51:39,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482066282] [2024-06-14 12:51:39,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:51:39,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:51:39,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:51:41,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:51:41,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:51:41,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482066282] [2024-06-14 12:51:41,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482066282] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:51:41,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:51:41,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:51:41,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015416346] [2024-06-14 12:51:41,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:51:41,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:51:41,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:51:41,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:51:41,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:51:41,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:51:41,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 221 transitions, 1882 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 12:51:41,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:51:41,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:51:41,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:51:41,792 INFO L124 PetriNetUnfolderBase]: 499/1017 cut-off events. [2024-06-14 12:51:41,793 INFO L125 PetriNetUnfolderBase]: For 177650/177653 co-relation queries the response was YES. [2024-06-14 12:51:41,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7131 conditions, 1017 events. 499/1017 cut-off events. For 177650/177653 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5864 event pairs, 76 based on Foata normal form. 2/1014 useless extension candidates. Maximal degree in co-relation 6986. Up to 859 conditions per place. [2024-06-14 12:51:41,802 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 188 selfloop transitions, 42 changer transitions 0/233 dead transitions. [2024-06-14 12:51:41,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 233 transitions, 2370 flow [2024-06-14 12:51:41,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:51:41,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:51:41,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-14 12:51:41,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-14 12:51:41,802 INFO L175 Difference]: Start difference. First operand has 308 places, 221 transitions, 1882 flow. Second operand 11 states and 136 transitions. [2024-06-14 12:51:41,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 233 transitions, 2370 flow [2024-06-14 12:51:42,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 233 transitions, 2257 flow, removed 22 selfloop flow, removed 10 redundant places. [2024-06-14 12:51:42,365 INFO L231 Difference]: Finished difference. Result has 309 places, 221 transitions, 1857 flow [2024-06-14 12:51:42,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1769, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1857, PETRI_PLACES=309, PETRI_TRANSITIONS=221} [2024-06-14 12:51:42,365 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 278 predicate places. [2024-06-14 12:51:42,365 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 221 transitions, 1857 flow [2024-06-14 12:51:42,366 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 12:51:42,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:51:42,366 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 12:51:42,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-14 12:51:42,366 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 12:51:42,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:51:42,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1787561869, now seen corresponding path program 33 times [2024-06-14 12:51:42,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:51:42,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564800088] [2024-06-14 12:51:42,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:51:42,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:51:42,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:51:43,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:51:43,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:51:43,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564800088] [2024-06-14 12:51:43,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564800088] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:51:43,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:51:43,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:51:43,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783400291] [2024-06-14 12:51:43,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:51:43,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:51:43,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:51:43,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:51:43,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:51:44,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:51:44,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 221 transitions, 1857 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 12:51:44,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:51:44,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:51:44,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:51:44,544 INFO L124 PetriNetUnfolderBase]: 503/1025 cut-off events. [2024-06-14 12:51:44,545 INFO L125 PetriNetUnfolderBase]: For 180703/180706 co-relation queries the response was YES. [2024-06-14 12:51:44,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7196 conditions, 1025 events. 503/1025 cut-off events. For 180703/180706 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5938 event pairs, 78 based on Foata normal form. 2/1022 useless extension candidates. Maximal degree in co-relation 7050. Up to 885 conditions per place. [2024-06-14 12:51:44,553 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 196 selfloop transitions, 35 changer transitions 0/234 dead transitions. [2024-06-14 12:51:44,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 234 transitions, 2395 flow [2024-06-14 12:51:44,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:51:44,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:51:44,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-14 12:51:44,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-14 12:51:44,554 INFO L175 Difference]: Start difference. First operand has 309 places, 221 transitions, 1857 flow. Second operand 11 states and 133 transitions. [2024-06-14 12:51:44,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 234 transitions, 2395 flow [2024-06-14 12:51:45,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 234 transitions, 2263 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-06-14 12:51:45,115 INFO L231 Difference]: Finished difference. Result has 310 places, 222 transitions, 1849 flow [2024-06-14 12:51:45,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1725, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1849, PETRI_PLACES=310, PETRI_TRANSITIONS=222} [2024-06-14 12:51:45,115 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 279 predicate places. [2024-06-14 12:51:45,115 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 222 transitions, 1849 flow [2024-06-14 12:51:45,115 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 12:51:45,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:51:45,116 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 12:51:45,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-14 12:51:45,116 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 12:51:45,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:51:45,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1787384239, now seen corresponding path program 34 times [2024-06-14 12:51:45,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:51:45,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342881542] [2024-06-14 12:51:45,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:51:45,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:51:45,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:51:46,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:51:46,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:51:46,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342881542] [2024-06-14 12:51:46,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342881542] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:51:46,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:51:46,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:51:46,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612005715] [2024-06-14 12:51:46,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:51:46,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:51:46,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:51:46,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:51:46,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:51:46,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:51:46,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 222 transitions, 1849 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 12:51:46,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:51:46,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:51:46,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:51:47,077 INFO L124 PetriNetUnfolderBase]: 500/1020 cut-off events. [2024-06-14 12:51:47,078 INFO L125 PetriNetUnfolderBase]: For 168914/168917 co-relation queries the response was YES. [2024-06-14 12:51:47,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6831 conditions, 1020 events. 500/1020 cut-off events. For 168914/168917 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5931 event pairs, 75 based on Foata normal form. 2/1017 useless extension candidates. Maximal degree in co-relation 6684. Up to 860 conditions per place. [2024-06-14 12:51:47,089 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 195 selfloop transitions, 37 changer transitions 0/235 dead transitions. [2024-06-14 12:51:47,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 235 transitions, 2343 flow [2024-06-14 12:51:47,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:51:47,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:51:47,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-14 12:51:47,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-14 12:51:47,090 INFO L175 Difference]: Start difference. First operand has 310 places, 222 transitions, 1849 flow. Second operand 11 states and 134 transitions. [2024-06-14 12:51:47,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 235 transitions, 2343 flow [2024-06-14 12:51:47,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 235 transitions, 2229 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-14 12:51:47,675 INFO L231 Difference]: Finished difference. Result has 312 places, 222 transitions, 1813 flow [2024-06-14 12:51:47,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1735, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1813, PETRI_PLACES=312, PETRI_TRANSITIONS=222} [2024-06-14 12:51:47,675 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 281 predicate places. [2024-06-14 12:51:47,676 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 222 transitions, 1813 flow [2024-06-14 12:51:47,676 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 12:51:47,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:51:47,676 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 12:51:47,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-14 12:51:47,676 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 12:51:47,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:51:47,676 INFO L85 PathProgramCache]: Analyzing trace with hash -562342919, now seen corresponding path program 15 times [2024-06-14 12:51:47,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:51:47,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541359527] [2024-06-14 12:51:47,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:51:47,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:51:47,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:51:49,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:51:49,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:51:49,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541359527] [2024-06-14 12:51:49,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541359527] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:51:49,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:51:49,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:51:49,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115995373] [2024-06-14 12:51:49,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:51:49,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:51:49,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:51:49,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:51:49,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:51:49,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:51:49,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 222 transitions, 1813 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 12:51:49,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:51:49,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:51:49,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:51:50,166 INFO L124 PetriNetUnfolderBase]: 512/1052 cut-off events. [2024-06-14 12:51:50,166 INFO L125 PetriNetUnfolderBase]: For 214358/214361 co-relation queries the response was YES. [2024-06-14 12:51:50,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6950 conditions, 1052 events. 512/1052 cut-off events. For 214358/214361 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6185 event pairs, 83 based on Foata normal form. 8/1055 useless extension candidates. Maximal degree in co-relation 6802. Up to 825 conditions per place. [2024-06-14 12:51:50,177 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 170 selfloop transitions, 56 changer transitions 9/238 dead transitions. [2024-06-14 12:51:50,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 238 transitions, 2375 flow [2024-06-14 12:51:50,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:51:50,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:51:50,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-14 12:51:50,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880208333333333 [2024-06-14 12:51:50,178 INFO L175 Difference]: Start difference. First operand has 312 places, 222 transitions, 1813 flow. Second operand 12 states and 149 transitions. [2024-06-14 12:51:50,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 238 transitions, 2375 flow [2024-06-14 12:51:50,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 238 transitions, 2100 flow, removed 24 selfloop flow, removed 13 redundant places. [2024-06-14 12:51:50,790 INFO L231 Difference]: Finished difference. Result has 311 places, 219 transitions, 1632 flow [2024-06-14 12:51:50,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1538, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1632, PETRI_PLACES=311, PETRI_TRANSITIONS=219} [2024-06-14 12:51:50,790 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 280 predicate places. [2024-06-14 12:51:50,790 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 219 transitions, 1632 flow [2024-06-14 12:51:50,790 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 12:51:50,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:51:50,790 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 12:51:50,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-14 12:51:50,791 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 12:51:50,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:51:50,791 INFO L85 PathProgramCache]: Analyzing trace with hash -231321131, now seen corresponding path program 16 times [2024-06-14 12:51:50,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:51:50,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123226132] [2024-06-14 12:51:50,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:51:50,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:51:50,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:51:52,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:51:52,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:51:52,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123226132] [2024-06-14 12:51:52,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123226132] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:51:52,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:51:52,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:51:52,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596470555] [2024-06-14 12:51:52,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:51:52,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:51:52,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:51:52,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:51:52,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:51:52,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:51:52,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 219 transitions, 1632 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 12:51:52,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:51:52,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:51:52,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:51:53,034 INFO L124 PetriNetUnfolderBase]: 503/1041 cut-off events. [2024-06-14 12:51:53,035 INFO L125 PetriNetUnfolderBase]: For 201167/201170 co-relation queries the response was YES. [2024-06-14 12:51:53,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6568 conditions, 1041 events. 503/1041 cut-off events. For 201167/201170 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6148 event pairs, 79 based on Foata normal form. 6/1042 useless extension candidates. Maximal degree in co-relation 6422. Up to 795 conditions per place. [2024-06-14 12:51:53,046 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 198 selfloop transitions, 30 changer transitions 7/238 dead transitions. [2024-06-14 12:51:53,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 238 transitions, 2478 flow [2024-06-14 12:51:53,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:51:53,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:51:53,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-14 12:51:53,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-14 12:51:53,047 INFO L175 Difference]: Start difference. First operand has 311 places, 219 transitions, 1632 flow. Second operand 11 states and 138 transitions. [2024-06-14 12:51:53,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 238 transitions, 2478 flow [2024-06-14 12:51:53,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 238 transitions, 2308 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-14 12:51:53,555 INFO L231 Difference]: Finished difference. Result has 307 places, 216 transitions, 1512 flow [2024-06-14 12:51:53,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1470, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1512, PETRI_PLACES=307, PETRI_TRANSITIONS=216} [2024-06-14 12:51:53,556 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 276 predicate places. [2024-06-14 12:51:53,556 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 216 transitions, 1512 flow [2024-06-14 12:51:53,556 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 12:51:53,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:51:53,556 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 12:51:53,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-14 12:51:53,556 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 12:51:53,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:51:53,556 INFO L85 PathProgramCache]: Analyzing trace with hash -562103909, now seen corresponding path program 17 times [2024-06-14 12:51:53,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:51:53,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814044800] [2024-06-14 12:51:53,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:51:53,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:51:53,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:51:55,372 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 12:51:55,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:51:55,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814044800] [2024-06-14 12:51:55,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814044800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:51:55,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:51:55,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:51:55,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699605073] [2024-06-14 12:51:55,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:51:55,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:51:55,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:51:55,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:51:55,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:51:55,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:51:55,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 216 transitions, 1512 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 12:51:55,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:51:55,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:51:55,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:51:56,073 INFO L124 PetriNetUnfolderBase]: 518/1074 cut-off events. [2024-06-14 12:51:56,073 INFO L125 PetriNetUnfolderBase]: For 252883/252886 co-relation queries the response was YES. [2024-06-14 12:51:56,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7555 conditions, 1074 events. 518/1074 cut-off events. For 252883/252886 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6360 event pairs, 93 based on Foata normal form. 6/1075 useless extension candidates. Maximal degree in co-relation 7411. Up to 818 conditions per place. [2024-06-14 12:51:56,082 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 185 selfloop transitions, 42 changer transitions 6/236 dead transitions. [2024-06-14 12:51:56,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 236 transitions, 2350 flow [2024-06-14 12:51:56,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:51:56,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:51:56,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-14 12:51:56,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-14 12:51:56,083 INFO L175 Difference]: Start difference. First operand has 307 places, 216 transitions, 1512 flow. Second operand 12 states and 152 transitions. [2024-06-14 12:51:56,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 236 transitions, 2350 flow [2024-06-14 12:51:56,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 236 transitions, 2283 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 12:51:56,789 INFO L231 Difference]: Finished difference. Result has 306 places, 214 transitions, 1522 flow [2024-06-14 12:51:56,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1449, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1522, PETRI_PLACES=306, PETRI_TRANSITIONS=214} [2024-06-14 12:51:56,789 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 275 predicate places. [2024-06-14 12:51:56,789 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 214 transitions, 1522 flow [2024-06-14 12:51:56,789 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 12:51:56,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:51:56,789 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 12:51:56,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-14 12:51:56,790 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 12:51:56,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:51:56,790 INFO L85 PathProgramCache]: Analyzing trace with hash -348810271, now seen corresponding path program 18 times [2024-06-14 12:51:56,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:51:56,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705255496] [2024-06-14 12:51:56,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:51:56,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:51:56,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:51:58,526 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 12:51:58,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:51:58,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705255496] [2024-06-14 12:51:58,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705255496] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:51:58,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:51:58,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:51:58,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498407878] [2024-06-14 12:51:58,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:51:58,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:51:58,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:51:58,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:51:58,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:51:58,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:51:58,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 214 transitions, 1522 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 12:51:58,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:51:58,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:51:58,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:51:59,126 INFO L124 PetriNetUnfolderBase]: 521/1079 cut-off events. [2024-06-14 12:51:59,126 INFO L125 PetriNetUnfolderBase]: For 306285/306288 co-relation queries the response was YES. [2024-06-14 12:51:59,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7370 conditions, 1079 events. 521/1079 cut-off events. For 306285/306288 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 6380 event pairs, 96 based on Foata normal form. 16/1090 useless extension candidates. Maximal degree in co-relation 7227. Up to 824 conditions per place. [2024-06-14 12:51:59,137 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 167 selfloop transitions, 49 changer transitions 10/229 dead transitions. [2024-06-14 12:51:59,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 229 transitions, 2062 flow [2024-06-14 12:51:59,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:51:59,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:51:59,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-14 12:51:59,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39488636363636365 [2024-06-14 12:51:59,138 INFO L175 Difference]: Start difference. First operand has 306 places, 214 transitions, 1522 flow. Second operand 11 states and 139 transitions. [2024-06-14 12:51:59,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 229 transitions, 2062 flow [2024-06-14 12:51:59,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 229 transitions, 1977 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 12:51:59,869 INFO L231 Difference]: Finished difference. Result has 304 places, 207 transitions, 1496 flow [2024-06-14 12:51:59,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1437, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1496, PETRI_PLACES=304, PETRI_TRANSITIONS=207} [2024-06-14 12:51:59,869 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 273 predicate places. [2024-06-14 12:51:59,869 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 207 transitions, 1496 flow [2024-06-14 12:51:59,869 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 12:51:59,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:51:59,869 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 12:51:59,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-14 12:51:59,869 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 12:51:59,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:51:59,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1757241867, now seen corresponding path program 19 times [2024-06-14 12:51:59,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:51:59,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512039586] [2024-06-14 12:51:59,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:51:59,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:51:59,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:52:02,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:52:02,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:52:02,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512039586] [2024-06-14 12:52:02,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512039586] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:52:02,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:52:02,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:52:02,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673645701] [2024-06-14 12:52:02,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:52:02,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:52:02,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:52:02,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:52:02,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:52:02,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:52:02,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 207 transitions, 1496 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 12:52:02,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:52:02,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:52:02,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:52:03,101 INFO L124 PetriNetUnfolderBase]: 498/1028 cut-off events. [2024-06-14 12:52:03,101 INFO L125 PetriNetUnfolderBase]: For 246518/246521 co-relation queries the response was YES. [2024-06-14 12:52:03,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7123 conditions, 1028 events. 498/1028 cut-off events. For 246518/246521 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 6001 event pairs, 98 based on Foata normal form. 8/1030 useless extension candidates. Maximal degree in co-relation 6981. Up to 671 conditions per place. [2024-06-14 12:52:03,111 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 122 selfloop transitions, 86 changer transitions 9/220 dead transitions. [2024-06-14 12:52:03,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 220 transitions, 2010 flow [2024-06-14 12:52:03,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:52:03,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:52:03,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-14 12:52:03,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880208333333333 [2024-06-14 12:52:03,112 INFO L175 Difference]: Start difference. First operand has 304 places, 207 transitions, 1496 flow. Second operand 12 states and 149 transitions. [2024-06-14 12:52:03,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 220 transitions, 2010 flow [2024-06-14 12:52:03,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 220 transitions, 1904 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-06-14 12:52:03,716 INFO L231 Difference]: Finished difference. Result has 300 places, 204 transitions, 1549 flow [2024-06-14 12:52:03,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1390, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1549, PETRI_PLACES=300, PETRI_TRANSITIONS=204} [2024-06-14 12:52:03,716 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 269 predicate places. [2024-06-14 12:52:03,717 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 204 transitions, 1549 flow [2024-06-14 12:52:03,717 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 12:52:03,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:52:03,717 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 12:52:03,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-14 12:52:03,717 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 12:52:03,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:52:03,717 INFO L85 PathProgramCache]: Analyzing trace with hash -576942061, now seen corresponding path program 20 times [2024-06-14 12:52:03,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:52:03,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282122638] [2024-06-14 12:52:03,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:52:03,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:52:03,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:52:05,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:52:05,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:52:05,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282122638] [2024-06-14 12:52:05,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282122638] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:52:05,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:52:05,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:52:05,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849960125] [2024-06-14 12:52:05,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:52:05,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:52:05,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:52:05,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:52:05,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:52:05,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:52:05,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 204 transitions, 1549 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 12:52:05,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:52:05,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:52:05,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:52:06,427 INFO L124 PetriNetUnfolderBase]: 493/1027 cut-off events. [2024-06-14 12:52:06,428 INFO L125 PetriNetUnfolderBase]: For 239315/239318 co-relation queries the response was YES. [2024-06-14 12:52:06,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7108 conditions, 1027 events. 493/1027 cut-off events. For 239315/239318 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 6018 event pairs, 96 based on Foata normal form. 8/1030 useless extension candidates. Maximal degree in co-relation 6968. Up to 813 conditions per place. [2024-06-14 12:52:06,438 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 162 selfloop transitions, 48 changer transitions 7/220 dead transitions. [2024-06-14 12:52:06,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 220 transitions, 2073 flow [2024-06-14 12:52:06,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:52:06,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:52:06,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-14 12:52:06,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-14 12:52:06,439 INFO L175 Difference]: Start difference. First operand has 300 places, 204 transitions, 1549 flow. Second operand 12 states and 152 transitions. [2024-06-14 12:52:06,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 220 transitions, 2073 flow [2024-06-14 12:52:06,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 220 transitions, 1897 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 12:52:06,922 INFO L231 Difference]: Finished difference. Result has 298 places, 201 transitions, 1453 flow [2024-06-14 12:52:06,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1373, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1453, PETRI_PLACES=298, PETRI_TRANSITIONS=201} [2024-06-14 12:52:06,923 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 267 predicate places. [2024-06-14 12:52:06,923 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 201 transitions, 1453 flow [2024-06-14 12:52:06,923 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 12:52:06,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:52:06,923 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 12:52:06,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-14 12:52:06,923 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 12:52:06,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:52:06,924 INFO L85 PathProgramCache]: Analyzing trace with hash 311071925, now seen corresponding path program 21 times [2024-06-14 12:52:06,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:52:06,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343622103] [2024-06-14 12:52:06,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:52:06,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:52:06,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:52:08,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:52:08,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:52:08,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343622103] [2024-06-14 12:52:08,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343622103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:52:08,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:52:08,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:52:08,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501480908] [2024-06-14 12:52:08,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:52:08,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:52:08,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:52:08,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:52:08,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:52:08,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:52:08,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 201 transitions, 1453 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 12:52:08,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:52:08,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:52:08,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:52:08,924 INFO L124 PetriNetUnfolderBase]: 506/1062 cut-off events. [2024-06-14 12:52:08,924 INFO L125 PetriNetUnfolderBase]: For 271040/271043 co-relation queries the response was YES. [2024-06-14 12:52:08,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8106 conditions, 1062 events. 506/1062 cut-off events. For 271040/271043 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 6295 event pairs, 104 based on Foata normal form. 6/1063 useless extension candidates. Maximal degree in co-relation 7967. Up to 728 conditions per place. [2024-06-14 12:52:08,934 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 150 selfloop transitions, 61 changer transitions 7/221 dead transitions. [2024-06-14 12:52:08,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 221 transitions, 2251 flow [2024-06-14 12:52:08,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:52:08,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:52:08,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 155 transitions. [2024-06-14 12:52:08,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4036458333333333 [2024-06-14 12:52:08,935 INFO L175 Difference]: Start difference. First operand has 298 places, 201 transitions, 1453 flow. Second operand 12 states and 155 transitions. [2024-06-14 12:52:08,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 221 transitions, 2251 flow [2024-06-14 12:52:09,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 221 transitions, 2145 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-14 12:52:09,767 INFO L231 Difference]: Finished difference. Result has 296 places, 198 transitions, 1461 flow [2024-06-14 12:52:09,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1351, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1461, PETRI_PLACES=296, PETRI_TRANSITIONS=198} [2024-06-14 12:52:09,767 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 265 predicate places. [2024-06-14 12:52:09,767 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 198 transitions, 1461 flow [2024-06-14 12:52:09,767 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 12:52:09,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:52:09,767 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 12:52:09,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-14 12:52:09,768 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 12:52:09,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:52:09,768 INFO L85 PathProgramCache]: Analyzing trace with hash 89426885, now seen corresponding path program 22 times [2024-06-14 12:52:09,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:52:09,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547449856] [2024-06-14 12:52:09,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:52:09,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:52:09,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:52:12,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:52:12,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:52:12,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547449856] [2024-06-14 12:52:12,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547449856] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:52:12,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:52:12,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:52:12,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169483525] [2024-06-14 12:52:12,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:52:12,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:52:12,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:52:12,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:52:12,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:52:12,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:52:12,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 198 transitions, 1461 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 12:52:12,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:52:12,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:52:12,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:52:13,074 INFO L124 PetriNetUnfolderBase]: 521/1093 cut-off events. [2024-06-14 12:52:13,074 INFO L125 PetriNetUnfolderBase]: For 317907/317910 co-relation queries the response was YES. [2024-06-14 12:52:13,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9213 conditions, 1093 events. 521/1093 cut-off events. For 317907/317910 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 6567 event pairs, 122 based on Foata normal form. 6/1093 useless extension candidates. Maximal degree in co-relation 9075. Up to 720 conditions per place. [2024-06-14 12:52:13,086 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 144 selfloop transitions, 61 changer transitions 7/215 dead transitions. [2024-06-14 12:52:13,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 215 transitions, 2235 flow [2024-06-14 12:52:13,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:52:13,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:52:13,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-14 12:52:13,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-14 12:52:13,087 INFO L175 Difference]: Start difference. First operand has 296 places, 198 transitions, 1461 flow. Second operand 12 states and 150 transitions. [2024-06-14 12:52:13,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 215 transitions, 2235 flow [2024-06-14 12:52:13,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 215 transitions, 2107 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 12:52:13,973 INFO L231 Difference]: Finished difference. Result has 294 places, 195 transitions, 1447 flow [2024-06-14 12:52:13,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1337, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1447, PETRI_PLACES=294, PETRI_TRANSITIONS=195} [2024-06-14 12:52:13,973 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 263 predicate places. [2024-06-14 12:52:13,973 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 195 transitions, 1447 flow [2024-06-14 12:52:13,974 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 12:52:13,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:52:13,974 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 12:52:13,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-14 12:52:13,974 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 12:52:13,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:52:13,974 INFO L85 PathProgramCache]: Analyzing trace with hash -340470031, now seen corresponding path program 23 times [2024-06-14 12:52:13,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:52:13,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634369453] [2024-06-14 12:52:13,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:52:13,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:52:13,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:52:15,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:52:15,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:52:15,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634369453] [2024-06-14 12:52:15,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634369453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:52:15,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:52:15,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:52:15,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548218576] [2024-06-14 12:52:15,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:52:15,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:52:15,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:52:15,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:52:15,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:52:15,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:52:15,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 195 transitions, 1447 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 12:52:15,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:52:15,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:52:15,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:52:16,298 INFO L124 PetriNetUnfolderBase]: 551/1163 cut-off events. [2024-06-14 12:52:16,298 INFO L125 PetriNetUnfolderBase]: For 399435/399438 co-relation queries the response was YES. [2024-06-14 12:52:16,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11093 conditions, 1163 events. 551/1163 cut-off events. For 399435/399438 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 7100 event pairs, 147 based on Foata normal form. 6/1163 useless extension candidates. Maximal degree in co-relation 10956. Up to 800 conditions per place. [2024-06-14 12:52:16,310 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 155 selfloop transitions, 46 changer transitions 9/213 dead transitions. [2024-06-14 12:52:16,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 213 transitions, 2217 flow [2024-06-14 12:52:16,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:52:16,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:52:16,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-14 12:52:16,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-14 12:52:16,311 INFO L175 Difference]: Start difference. First operand has 294 places, 195 transitions, 1447 flow. Second operand 12 states and 148 transitions. [2024-06-14 12:52:16,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 213 transitions, 2217 flow [2024-06-14 12:52:17,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 213 transitions, 2091 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 12:52:17,254 INFO L231 Difference]: Finished difference. Result has 292 places, 192 transitions, 1402 flow [2024-06-14 12:52:17,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1325, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1402, PETRI_PLACES=292, PETRI_TRANSITIONS=192} [2024-06-14 12:52:17,254 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 261 predicate places. [2024-06-14 12:52:17,254 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 192 transitions, 1402 flow [2024-06-14 12:52:17,254 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 12:52:17,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:52:17,255 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 12:52:17,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-14 12:52:17,255 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 12:52:17,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:52:17,255 INFO L85 PathProgramCache]: Analyzing trace with hash -340758331, now seen corresponding path program 24 times [2024-06-14 12:52:17,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:52:17,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093504648] [2024-06-14 12:52:17,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:52:17,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:52:17,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:52:18,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:52:18,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:52:18,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093504648] [2024-06-14 12:52:18,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093504648] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:52:18,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:52:18,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:52:18,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854794059] [2024-06-14 12:52:18,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:52:18,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:52:18,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:52:18,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:52:18,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:52:18,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:52:18,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 192 transitions, 1402 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 12:52:18,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:52:18,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:52:18,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:52:19,172 INFO L124 PetriNetUnfolderBase]: 541/1145 cut-off events. [2024-06-14 12:52:19,172 INFO L125 PetriNetUnfolderBase]: For 391532/391535 co-relation queries the response was YES. [2024-06-14 12:52:19,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10960 conditions, 1145 events. 541/1145 cut-off events. For 391532/391535 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 6956 event pairs, 147 based on Foata normal form. 6/1145 useless extension candidates. Maximal degree in co-relation 10824. Up to 918 conditions per place. [2024-06-14 12:52:19,190 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 147 selfloop transitions, 44 changer transitions 11/205 dead transitions. [2024-06-14 12:52:19,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 205 transitions, 1866 flow [2024-06-14 12:52:19,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:52:19,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:52:19,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-14 12:52:19,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3697916666666667 [2024-06-14 12:52:19,191 INFO L175 Difference]: Start difference. First operand has 292 places, 192 transitions, 1402 flow. Second operand 12 states and 142 transitions. [2024-06-14 12:52:19,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 205 transitions, 1866 flow [2024-06-14 12:52:20,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 205 transitions, 1778 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 12:52:20,177 INFO L231 Difference]: Finished difference. Result has 289 places, 188 transitions, 1379 flow [2024-06-14 12:52:20,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1314, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1379, PETRI_PLACES=289, PETRI_TRANSITIONS=188} [2024-06-14 12:52:20,177 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 258 predicate places. [2024-06-14 12:52:20,177 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 188 transitions, 1379 flow [2024-06-14 12:52:20,178 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 12:52:20,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:52:20,178 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 12:52:20,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-14 12:52:20,178 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 12:52:20,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:52:20,179 INFO L85 PathProgramCache]: Analyzing trace with hash -570446941, now seen corresponding path program 25 times [2024-06-14 12:52:20,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:52:20,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034613705] [2024-06-14 12:52:20,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:52:20,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:52:20,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:52:21,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:52:21,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:52:21,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034613705] [2024-06-14 12:52:21,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034613705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:52:21,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:52:21,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:52:21,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401018900] [2024-06-14 12:52:21,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:52:21,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:52:21,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:52:21,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:52:21,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:52:21,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:52:21,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 188 transitions, 1379 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 12:52:21,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:52:21,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:52:21,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:52:22,213 INFO L124 PetriNetUnfolderBase]: 533/1125 cut-off events. [2024-06-14 12:52:22,213 INFO L125 PetriNetUnfolderBase]: For 377727/377730 co-relation queries the response was YES. [2024-06-14 12:52:22,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10800 conditions, 1125 events. 533/1125 cut-off events. For 377727/377730 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 6778 event pairs, 145 based on Foata normal form. 6/1125 useless extension candidates. Maximal degree in co-relation 10666. Up to 860 conditions per place. [2024-06-14 12:52:22,225 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 158 selfloop transitions, 38 changer transitions 6/205 dead transitions. [2024-06-14 12:52:22,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 205 transitions, 2125 flow [2024-06-14 12:52:22,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:52:22,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:52:22,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-14 12:52:22,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-14 12:52:22,226 INFO L175 Difference]: Start difference. First operand has 289 places, 188 transitions, 1379 flow. Second operand 12 states and 147 transitions. [2024-06-14 12:52:22,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 205 transitions, 2125 flow [2024-06-14 12:52:23,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 205 transitions, 2011 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-14 12:52:23,215 INFO L231 Difference]: Finished difference. Result has 284 places, 186 transitions, 1333 flow [2024-06-14 12:52:23,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1269, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1333, PETRI_PLACES=284, PETRI_TRANSITIONS=186} [2024-06-14 12:52:23,215 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 253 predicate places. [2024-06-14 12:52:23,215 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 186 transitions, 1333 flow [2024-06-14 12:52:23,216 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 12:52:23,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:52:23,216 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 12:52:23,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-14 12:52:23,216 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 12:52:23,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:52:23,216 INFO L85 PathProgramCache]: Analyzing trace with hash 89187875, now seen corresponding path program 26 times [2024-06-14 12:52:23,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:52:23,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686482721] [2024-06-14 12:52:23,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:52:23,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:52:23,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:52:24,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:52:24,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:52:24,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686482721] [2024-06-14 12:52:24,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686482721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:52:24,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:52:24,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:52:24,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364869736] [2024-06-14 12:52:24,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:52:24,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:52:24,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:52:24,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:52:24,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:52:25,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:52:25,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 186 transitions, 1333 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 12:52:25,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:52:25,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:52:25,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:52:25,528 INFO L124 PetriNetUnfolderBase]: 524/1108 cut-off events. [2024-06-14 12:52:25,528 INFO L125 PetriNetUnfolderBase]: For 372695/372698 co-relation queries the response was YES. [2024-06-14 12:52:25,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10393 conditions, 1108 events. 524/1108 cut-off events. For 372695/372698 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 6643 event pairs, 144 based on Foata normal form. 8/1111 useless extension candidates. Maximal degree in co-relation 10260. Up to 829 conditions per place. [2024-06-14 12:52:25,538 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 132 selfloop transitions, 58 changer transitions 9/202 dead transitions. [2024-06-14 12:52:25,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 202 transitions, 1821 flow [2024-06-14 12:52:25,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:52:25,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:52:25,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-14 12:52:25,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880208333333333 [2024-06-14 12:52:25,539 INFO L175 Difference]: Start difference. First operand has 284 places, 186 transitions, 1333 flow. Second operand 12 states and 149 transitions. [2024-06-14 12:52:25,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 202 transitions, 1821 flow [2024-06-14 12:52:26,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 202 transitions, 1739 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 12:52:26,670 INFO L231 Difference]: Finished difference. Result has 283 places, 183 transitions, 1352 flow [2024-06-14 12:52:26,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1251, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1352, PETRI_PLACES=283, PETRI_TRANSITIONS=183} [2024-06-14 12:52:26,671 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 252 predicate places. [2024-06-14 12:52:26,671 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 183 transitions, 1352 flow [2024-06-14 12:52:26,671 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 12:52:26,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:52:26,671 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 12:52:26,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-14 12:52:26,672 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 12:52:26,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:52:26,672 INFO L85 PathProgramCache]: Analyzing trace with hash -570685951, now seen corresponding path program 27 times [2024-06-14 12:52:26,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:52:26,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811296468] [2024-06-14 12:52:26,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:52:26,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:52:26,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:52:28,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:52:28,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:52:28,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811296468] [2024-06-14 12:52:28,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811296468] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:52:28,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:52:28,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:52:28,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440461885] [2024-06-14 12:52:28,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:52:28,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:52:28,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:52:28,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:52:28,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:52:28,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:52:28,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 183 transitions, 1352 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 12:52:28,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:52:28,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:52:28,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:52:29,243 INFO L124 PetriNetUnfolderBase]: 519/1101 cut-off events. [2024-06-14 12:52:29,243 INFO L125 PetriNetUnfolderBase]: For 363594/363597 co-relation queries the response was YES. [2024-06-14 12:52:29,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10355 conditions, 1101 events. 519/1101 cut-off events. For 363594/363597 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 6594 event pairs, 144 based on Foata normal form. 8/1104 useless extension candidates. Maximal degree in co-relation 10223. Up to 914 conditions per place. [2024-06-14 12:52:29,252 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 152 selfloop transitions, 35 changer transitions 9/199 dead transitions. [2024-06-14 12:52:29,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 199 transitions, 1834 flow [2024-06-14 12:52:29,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:52:29,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:52:29,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-14 12:52:29,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-14 12:52:29,253 INFO L175 Difference]: Start difference. First operand has 283 places, 183 transitions, 1352 flow. Second operand 12 states and 147 transitions. [2024-06-14 12:52:29,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 199 transitions, 1834 flow [2024-06-14 12:52:30,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 199 transitions, 1710 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 12:52:30,349 INFO L231 Difference]: Finished difference. Result has 281 places, 180 transitions, 1278 flow [2024-06-14 12:52:30,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1230, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1278, PETRI_PLACES=281, PETRI_TRANSITIONS=180} [2024-06-14 12:52:30,350 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 250 predicate places. [2024-06-14 12:52:30,350 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 180 transitions, 1278 flow [2024-06-14 12:52:30,350 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 12:52:30,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:52:30,350 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 12:52:30,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-14 12:52:30,351 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 12:52:30,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:52:30,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1956687951, now seen corresponding path program 28 times [2024-06-14 12:52:30,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:52:30,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252640659] [2024-06-14 12:52:30,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:52:30,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:52:30,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:52:31,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:52:31,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:52:31,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252640659] [2024-06-14 12:52:31,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252640659] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:52:31,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:52:31,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:52:31,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434476635] [2024-06-14 12:52:31,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:52:31,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:52:31,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:52:31,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:52:31,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:52:31,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:52:31,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 180 transitions, 1278 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 12:52:31,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:52:31,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:52:31,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:52:32,380 INFO L124 PetriNetUnfolderBase]: 510/1088 cut-off events. [2024-06-14 12:52:32,381 INFO L125 PetriNetUnfolderBase]: For 343287/343290 co-relation queries the response was YES. [2024-06-14 12:52:32,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10112 conditions, 1088 events. 510/1088 cut-off events. For 343287/343290 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 6506 event pairs, 144 based on Foata normal form. 6/1088 useless extension candidates. Maximal degree in co-relation 9981. Up to 782 conditions per place. [2024-06-14 12:52:32,392 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 123 selfloop transitions, 57 changer transitions 10/193 dead transitions. [2024-06-14 12:52:32,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 193 transitions, 1718 flow [2024-06-14 12:52:32,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:52:32,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:52:32,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-14 12:52:32,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3802083333333333 [2024-06-14 12:52:32,393 INFO L175 Difference]: Start difference. First operand has 281 places, 180 transitions, 1278 flow. Second operand 12 states and 146 transitions. [2024-06-14 12:52:32,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 193 transitions, 1718 flow [2024-06-14 12:52:33,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 193 transitions, 1644 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 12:52:33,576 INFO L231 Difference]: Finished difference. Result has 279 places, 177 transitions, 1306 flow [2024-06-14 12:52:33,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1204, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1306, PETRI_PLACES=279, PETRI_TRANSITIONS=177} [2024-06-14 12:52:33,577 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 248 predicate places. [2024-06-14 12:52:33,577 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 177 transitions, 1306 flow [2024-06-14 12:52:33,577 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 12:52:33,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:52:33,577 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 12:52:33,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-14 12:52:33,577 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 12:52:33,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:52:33,578 INFO L85 PathProgramCache]: Analyzing trace with hash 310832915, now seen corresponding path program 29 times [2024-06-14 12:52:33,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:52:33,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064642555] [2024-06-14 12:52:33,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:52:33,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:52:33,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:52:35,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:52:35,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:52:35,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064642555] [2024-06-14 12:52:35,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064642555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:52:35,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:52:35,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:52:35,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141266277] [2024-06-14 12:52:35,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:52:35,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:52:35,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:52:35,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:52:35,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:52:35,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:52:35,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 177 transitions, 1306 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 12:52:35,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:52:35,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:52:35,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:52:36,264 INFO L124 PetriNetUnfolderBase]: 485/1035 cut-off events. [2024-06-14 12:52:36,264 INFO L125 PetriNetUnfolderBase]: For 307419/307422 co-relation queries the response was YES. [2024-06-14 12:52:36,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9010 conditions, 1035 events. 485/1035 cut-off events. For 307419/307422 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 6126 event pairs, 132 based on Foata normal form. 8/1038 useless extension candidates. Maximal degree in co-relation 8880. Up to 756 conditions per place. [2024-06-14 12:52:36,273 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 126 selfloop transitions, 55 changer transitions 9/193 dead transitions. [2024-06-14 12:52:36,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 193 transitions, 1774 flow [2024-06-14 12:52:36,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:52:36,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:52:36,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-14 12:52:36,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-14 12:52:36,274 INFO L175 Difference]: Start difference. First operand has 279 places, 177 transitions, 1306 flow. Second operand 12 states and 150 transitions. [2024-06-14 12:52:36,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 193 transitions, 1774 flow [2024-06-14 12:52:37,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 193 transitions, 1656 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 12:52:37,227 INFO L231 Difference]: Finished difference. Result has 276 places, 174 transitions, 1284 flow [2024-06-14 12:52:37,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1188, PETRI_DIFFERENCE_MINUEND_PLACES=264, 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=12, PETRI_FLOW=1284, PETRI_PLACES=276, PETRI_TRANSITIONS=174} [2024-06-14 12:52:37,228 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 245 predicate places. [2024-06-14 12:52:37,228 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 174 transitions, 1284 flow [2024-06-14 12:52:37,228 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 12:52:37,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:52:37,228 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 12:52:37,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-14 12:52:37,229 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 12:52:37,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:52:37,229 INFO L85 PathProgramCache]: Analyzing trace with hash -570455311, now seen corresponding path program 30 times [2024-06-14 12:52:37,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:52:37,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335805075] [2024-06-14 12:52:37,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:52:37,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:52:37,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:52:39,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:52:39,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:52:39,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335805075] [2024-06-14 12:52:39,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335805075] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:52:39,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:52:39,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:52:39,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104252356] [2024-06-14 12:52:39,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:52:39,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:52:39,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:52:39,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:52:39,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:52:39,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:52:39,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 174 transitions, 1284 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 12:52:39,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:52:39,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:52:39,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:52:39,778 INFO L124 PetriNetUnfolderBase]: 458/982 cut-off events. [2024-06-14 12:52:39,778 INFO L125 PetriNetUnfolderBase]: For 258548/258551 co-relation queries the response was YES. [2024-06-14 12:52:39,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7846 conditions, 982 events. 458/982 cut-off events. For 258548/258551 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 5728 event pairs, 120 based on Foata normal form. 8/985 useless extension candidates. Maximal degree in co-relation 7717. Up to 780 conditions per place. [2024-06-14 12:52:39,785 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 142 selfloop transitions, 37 changer transitions 7/189 dead transitions. [2024-06-14 12:52:39,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 189 transitions, 1742 flow [2024-06-14 12:52:39,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:52:39,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:52:39,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-14 12:52:39,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39488636363636365 [2024-06-14 12:52:39,786 INFO L175 Difference]: Start difference. First operand has 276 places, 174 transitions, 1284 flow. Second operand 11 states and 139 transitions. [2024-06-14 12:52:39,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 189 transitions, 1742 flow [2024-06-14 12:52:40,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 189 transitions, 1620 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-14 12:52:40,515 INFO L231 Difference]: Finished difference. Result has 272 places, 170 transitions, 1215 flow [2024-06-14 12:52:40,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1166, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1215, PETRI_PLACES=272, PETRI_TRANSITIONS=170} [2024-06-14 12:52:40,515 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 241 predicate places. [2024-06-14 12:52:40,515 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 170 transitions, 1215 flow [2024-06-14 12:52:40,516 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 12:52:40,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:52:40,516 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 12:52:40,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-14 12:52:40,516 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 12:52:40,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:52:40,516 INFO L85 PathProgramCache]: Analyzing trace with hash 319403795, now seen corresponding path program 31 times [2024-06-14 12:52:40,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:52:40,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962391514] [2024-06-14 12:52:40,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:52:40,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:52:40,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:52:42,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:52:42,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:52:42,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962391514] [2024-06-14 12:52:42,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962391514] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:52:42,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:52:42,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:52:42,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015437826] [2024-06-14 12:52:42,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:52:42,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:52:42,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:52:42,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:52:42,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:52:42,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:52:42,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 170 transitions, 1215 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 12:52:42,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:52:42,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:52:42,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:52:42,699 INFO L124 PetriNetUnfolderBase]: 448/960 cut-off events. [2024-06-14 12:52:42,699 INFO L125 PetriNetUnfolderBase]: For 243693/243696 co-relation queries the response was YES. [2024-06-14 12:52:42,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7619 conditions, 960 events. 448/960 cut-off events. For 243693/243696 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 5574 event pairs, 116 based on Foata normal form. 6/960 useless extension candidates. Maximal degree in co-relation 7491. Up to 658 conditions per place. [2024-06-14 12:52:42,707 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 117 selfloop transitions, 51 changer transitions 13/184 dead transitions. [2024-06-14 12:52:42,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 184 transitions, 1637 flow [2024-06-14 12:52:42,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:52:42,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:52:42,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-14 12:52:42,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776041666666667 [2024-06-14 12:52:42,708 INFO L175 Difference]: Start difference. First operand has 272 places, 170 transitions, 1215 flow. Second operand 12 states and 145 transitions. [2024-06-14 12:52:42,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 184 transitions, 1637 flow [2024-06-14 12:52:43,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 184 transitions, 1547 flow, removed 1 selfloop flow, removed 14 redundant places. [2024-06-14 12:52:43,423 INFO L231 Difference]: Finished difference. Result has 267 places, 166 transitions, 1209 flow [2024-06-14 12:52:43,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1125, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1209, PETRI_PLACES=267, PETRI_TRANSITIONS=166} [2024-06-14 12:52:43,424 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 236 predicate places. [2024-06-14 12:52:43,424 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 166 transitions, 1209 flow [2024-06-14 12:52:43,424 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 12:52:43,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:52:43,424 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 12:52:43,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-14 12:52:43,424 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 12:52:43,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:52:43,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1125079195, now seen corresponding path program 32 times [2024-06-14 12:52:43,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:52:43,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462832067] [2024-06-14 12:52:43,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:52:43,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:52:43,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:52:45,195 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 12:52:45,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:52:45,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462832067] [2024-06-14 12:52:45,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462832067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:52:45,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:52:45,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:52:45,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798872521] [2024-06-14 12:52:45,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:52:45,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:52:45,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:52:45,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:52:45,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:52:45,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:52:45,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 166 transitions, 1209 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 12:52:45,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:52:45,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:52:45,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:52:45,812 INFO L124 PetriNetUnfolderBase]: 441/948 cut-off events. [2024-06-14 12:52:45,812 INFO L125 PetriNetUnfolderBase]: For 255179/255179 co-relation queries the response was YES. [2024-06-14 12:52:45,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7611 conditions, 948 events. 441/948 cut-off events. For 255179/255179 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5473 event pairs, 113 based on Foata normal form. 8/954 useless extension candidates. Maximal degree in co-relation 7483. Up to 843 conditions per place. [2024-06-14 12:52:45,820 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 155 selfloop transitions, 15 changer transitions 9/182 dead transitions. [2024-06-14 12:52:45,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 182 transitions, 1651 flow [2024-06-14 12:52:45,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:52:45,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:52:45,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-14 12:52:45,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3567708333333333 [2024-06-14 12:52:45,821 INFO L175 Difference]: Start difference. First operand has 267 places, 166 transitions, 1209 flow. Second operand 12 states and 137 transitions. [2024-06-14 12:52:45,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 182 transitions, 1651 flow [2024-06-14 12:52:46,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 182 transitions, 1537 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-14 12:52:46,409 INFO L231 Difference]: Finished difference. Result has 261 places, 163 transitions, 1113 flow [2024-06-14 12:52:46,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1097, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1113, PETRI_PLACES=261, PETRI_TRANSITIONS=163} [2024-06-14 12:52:46,409 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 230 predicate places. [2024-06-14 12:52:46,409 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 163 transitions, 1113 flow [2024-06-14 12:52:46,409 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 12:52:46,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:52:46,409 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 12:52:46,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-14 12:52:46,409 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 12:52:46,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:52:46,410 INFO L85 PathProgramCache]: Analyzing trace with hash -577528079, now seen corresponding path program 33 times [2024-06-14 12:52:46,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:52:46,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341680097] [2024-06-14 12:52:46,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:52:46,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:52:46,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:52:48,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:52:48,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:52:48,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341680097] [2024-06-14 12:52:48,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341680097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:52:48,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:52:48,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:52:48,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585374384] [2024-06-14 12:52:48,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:52:48,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:52:48,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:52:48,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:52:48,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:52:48,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:52:48,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 163 transitions, 1113 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 12:52:48,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:52:48,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:52:48,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:52:48,768 INFO L124 PetriNetUnfolderBase]: 447/974 cut-off events. [2024-06-14 12:52:48,769 INFO L125 PetriNetUnfolderBase]: For 257706/257706 co-relation queries the response was YES. [2024-06-14 12:52:48,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8083 conditions, 974 events. 447/974 cut-off events. For 257706/257706 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 5707 event pairs, 120 based on Foata normal form. 6/978 useless extension candidates. Maximal degree in co-relation 7958. Up to 796 conditions per place. [2024-06-14 12:52:48,777 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 156 selfloop transitions, 15 changer transitions 9/183 dead transitions. [2024-06-14 12:52:48,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 183 transitions, 1783 flow [2024-06-14 12:52:48,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:52:48,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:52:48,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-14 12:52:48,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3697916666666667 [2024-06-14 12:52:48,777 INFO L175 Difference]: Start difference. First operand has 261 places, 163 transitions, 1113 flow. Second operand 12 states and 142 transitions. [2024-06-14 12:52:48,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 183 transitions, 1783 flow [2024-06-14 12:52:49,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 183 transitions, 1745 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 12:52:49,447 INFO L231 Difference]: Finished difference. Result has 259 places, 160 transitions, 1092 flow [2024-06-14 12:52:49,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1079, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1092, PETRI_PLACES=259, PETRI_TRANSITIONS=160} [2024-06-14 12:52:49,447 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 228 predicate places. [2024-06-14 12:52:49,447 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 160 transitions, 1092 flow [2024-06-14 12:52:49,447 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 12:52:49,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:52:49,447 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 12:52:49,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-14 12:52:49,447 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 12:52:49,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:52:49,448 INFO L85 PathProgramCache]: Analyzing trace with hash 557213459, now seen corresponding path program 34 times [2024-06-14 12:52:49,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:52:49,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847077609] [2024-06-14 12:52:49,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:52:49,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:52:49,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:52:50,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:52:50,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:52:50,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847077609] [2024-06-14 12:52:50,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847077609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:52:50,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:52:50,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:52:50,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491979067] [2024-06-14 12:52:50,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:52:50,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:52:50,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:52:50,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:52:50,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:52:50,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:52:50,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 160 transitions, 1092 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 12:52:50,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:52:50,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:52:50,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:52:51,443 INFO L124 PetriNetUnfolderBase]: 452/993 cut-off events. [2024-06-14 12:52:51,443 INFO L125 PetriNetUnfolderBase]: For 280804/280804 co-relation queries the response was YES. [2024-06-14 12:52:51,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8742 conditions, 993 events. 452/993 cut-off events. For 280804/280804 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 5883 event pairs, 131 based on Foata normal form. 6/997 useless extension candidates. Maximal degree in co-relation 8618. Up to 812 conditions per place. [2024-06-14 12:52:51,483 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 151 selfloop transitions, 18 changer transitions 9/181 dead transitions. [2024-06-14 12:52:51,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 181 transitions, 1758 flow [2024-06-14 12:52:51,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:52:51,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:52:51,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 153 transitions. [2024-06-14 12:52:51,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36778846153846156 [2024-06-14 12:52:51,484 INFO L175 Difference]: Start difference. First operand has 259 places, 160 transitions, 1092 flow. Second operand 13 states and 153 transitions. [2024-06-14 12:52:51,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 181 transitions, 1758 flow [2024-06-14 12:52:52,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 181 transitions, 1712 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-14 12:52:52,244 INFO L231 Difference]: Finished difference. Result has 257 places, 157 transitions, 1073 flow [2024-06-14 12:52:52,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1050, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1073, PETRI_PLACES=257, PETRI_TRANSITIONS=157} [2024-06-14 12:52:52,245 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 226 predicate places. [2024-06-14 12:52:52,245 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 157 transitions, 1073 flow [2024-06-14 12:52:52,245 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 12:52:52,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:52:52,245 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 12:52:52,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-14 12:52:52,246 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 12:52:52,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:52:52,246 INFO L85 PathProgramCache]: Analyzing trace with hash -577816379, now seen corresponding path program 35 times [2024-06-14 12:52:52,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:52:52,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966626415] [2024-06-14 12:52:52,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:52:52,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:52:52,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:52:53,684 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 12:52:53,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:52:53,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966626415] [2024-06-14 12:52:53,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966626415] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:52:53,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:52:53,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:52:53,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212139048] [2024-06-14 12:52:53,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:52:53,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:52:53,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:52:53,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:52:53,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:52:53,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:52:53,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 157 transitions, 1073 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 12:52:53,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:52:53,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:52:53,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:52:54,301 INFO L124 PetriNetUnfolderBase]: 442/975 cut-off events. [2024-06-14 12:52:54,301 INFO L125 PetriNetUnfolderBase]: For 275168/275168 co-relation queries the response was YES. [2024-06-14 12:52:54,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8621 conditions, 975 events. 442/975 cut-off events. For 275168/275168 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 5758 event pairs, 131 based on Foata normal form. 6/979 useless extension candidates. Maximal degree in co-relation 8499. Up to 854 conditions per place. [2024-06-14 12:52:54,310 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 146 selfloop transitions, 13 changer transitions 11/173 dead transitions. [2024-06-14 12:52:54,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 173 transitions, 1481 flow [2024-06-14 12:52:54,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:52:54,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:52:54,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-14 12:52:54,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3567708333333333 [2024-06-14 12:52:54,311 INFO L175 Difference]: Start difference. First operand has 257 places, 157 transitions, 1073 flow. Second operand 12 states and 137 transitions. [2024-06-14 12:52:54,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 173 transitions, 1481 flow [2024-06-14 12:52:55,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 173 transitions, 1440 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-14 12:52:55,070 INFO L231 Difference]: Finished difference. Result has 253 places, 153 transitions, 1036 flow [2024-06-14 12:52:55,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1032, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1036, PETRI_PLACES=253, PETRI_TRANSITIONS=153} [2024-06-14 12:52:55,070 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 222 predicate places. [2024-06-14 12:52:55,070 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 153 transitions, 1036 flow [2024-06-14 12:52:55,071 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 12:52:55,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:52:55,071 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 12:52:55,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-14 12:52:55,071 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 12:52:55,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:52:55,071 INFO L85 PathProgramCache]: Analyzing trace with hash -585859949, now seen corresponding path program 36 times [2024-06-14 12:52:55,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:52:55,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979039296] [2024-06-14 12:52:55,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:52:55,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:52:55,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:52:56,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:52:56,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:52:56,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979039296] [2024-06-14 12:52:56,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979039296] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:52:56,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:52:56,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:52:56,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265178449] [2024-06-14 12:52:56,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:52:56,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:52:56,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:52:56,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:52:56,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:52:56,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:52:56,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 153 transitions, 1036 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 12:52:56,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:52:56,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:52:56,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:52:57,310 INFO L124 PetriNetUnfolderBase]: 419/922 cut-off events. [2024-06-14 12:52:57,310 INFO L125 PetriNetUnfolderBase]: For 237546/237546 co-relation queries the response was YES. [2024-06-14 12:52:57,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7703 conditions, 922 events. 419/922 cut-off events. For 237546/237546 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 5349 event pairs, 118 based on Foata normal form. 6/926 useless extension candidates. Maximal degree in co-relation 7583. Up to 811 conditions per place. [2024-06-14 12:52:57,318 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 144 selfloop transitions, 12 changer transitions 10/169 dead transitions. [2024-06-14 12:52:57,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 169 transitions, 1436 flow [2024-06-14 12:52:57,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:52:57,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:52:57,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-14 12:52:57,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-14 12:52:57,319 INFO L175 Difference]: Start difference. First operand has 253 places, 153 transitions, 1036 flow. Second operand 12 states and 135 transitions. [2024-06-14 12:52:57,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 169 transitions, 1436 flow [2024-06-14 12:52:57,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 169 transitions, 1400 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-14 12:52:57,876 INFO L231 Difference]: Finished difference. Result has 247 places, 150 transitions, 1010 flow [2024-06-14 12:52:57,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1000, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1010, PETRI_PLACES=247, PETRI_TRANSITIONS=150} [2024-06-14 12:52:57,877 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 216 predicate places. [2024-06-14 12:52:57,877 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 150 transitions, 1010 flow [2024-06-14 12:52:57,877 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 12:52:57,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:52:57,877 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 12:52:57,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-14 12:52:57,877 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 12:52:57,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:52:57,877 INFO L85 PathProgramCache]: Analyzing trace with hash 2007126931, now seen corresponding path program 37 times [2024-06-14 12:52:57,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:52:57,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998685256] [2024-06-14 12:52:57,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:52:57,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:52:57,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:52:59,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:52:59,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:52:59,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998685256] [2024-06-14 12:52:59,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998685256] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:52:59,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:52:59,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:52:59,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707268873] [2024-06-14 12:52:59,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:52:59,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:52:59,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:52:59,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:52:59,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:52:59,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:52:59,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 150 transitions, 1010 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 12:52:59,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:52:59,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:52:59,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:53:00,086 INFO L124 PetriNetUnfolderBase]: 416/914 cut-off events. [2024-06-14 12:53:00,086 INFO L125 PetriNetUnfolderBase]: For 238134/238137 co-relation queries the response was YES. [2024-06-14 12:53:00,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7602 conditions, 914 events. 416/914 cut-off events. For 238134/238137 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5292 event pairs, 127 based on Foata normal form. 8/917 useless extension candidates. Maximal degree in co-relation 7484. Up to 752 conditions per place. [2024-06-14 12:53:00,094 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 126 selfloop transitions, 28 changer transitions 9/166 dead transitions. [2024-06-14 12:53:00,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 166 transitions, 1418 flow [2024-06-14 12:53:00,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:53:00,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:53:00,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-14 12:53:00,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3723958333333333 [2024-06-14 12:53:00,095 INFO L175 Difference]: Start difference. First operand has 247 places, 150 transitions, 1010 flow. Second operand 12 states and 143 transitions. [2024-06-14 12:53:00,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 166 transitions, 1418 flow [2024-06-14 12:53:00,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 166 transitions, 1390 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 12:53:00,664 INFO L231 Difference]: Finished difference. Result has 243 places, 147 transitions, 1020 flow [2024-06-14 12:53:00,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=982, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1020, PETRI_PLACES=243, PETRI_TRANSITIONS=147} [2024-06-14 12:53:00,664 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 212 predicate places. [2024-06-14 12:53:00,664 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 147 transitions, 1020 flow [2024-06-14 12:53:00,664 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 12:53:00,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:53:00,664 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 12:53:00,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-14 12:53:00,665 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 12:53:00,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:53:00,665 INFO L85 PathProgramCache]: Analyzing trace with hash 899512049, now seen corresponding path program 38 times [2024-06-14 12:53:00,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:53:00,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104591828] [2024-06-14 12:53:00,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:53:00,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:53:00,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:53:02,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:53:02,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:53:02,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104591828] [2024-06-14 12:53:02,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104591828] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:53:02,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:53:02,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:53:02,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054573086] [2024-06-14 12:53:02,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:53:02,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:53:02,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:53:02,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:53:02,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:53:02,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:53:02,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 147 transitions, 1020 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 12:53:02,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:53:02,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:53:02,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:53:02,595 INFO L124 PetriNetUnfolderBase]: 400/885 cut-off events. [2024-06-14 12:53:02,595 INFO L125 PetriNetUnfolderBase]: For 214859/214859 co-relation queries the response was YES. [2024-06-14 12:53:02,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7198 conditions, 885 events. 400/885 cut-off events. For 214859/214859 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 5045 event pairs, 111 based on Foata normal form. 6/889 useless extension candidates. Maximal degree in co-relation 7081. Up to 713 conditions per place. [2024-06-14 12:53:02,602 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 142 selfloop transitions, 12 changer transitions 12/169 dead transitions. [2024-06-14 12:53:02,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 169 transitions, 1652 flow [2024-06-14 12:53:02,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:53:02,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:53:02,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 151 transitions. [2024-06-14 12:53:02,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629807692307692 [2024-06-14 12:53:02,603 INFO L175 Difference]: Start difference. First operand has 243 places, 147 transitions, 1020 flow. Second operand 13 states and 151 transitions. [2024-06-14 12:53:02,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 169 transitions, 1652 flow [2024-06-14 12:53:03,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 169 transitions, 1588 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 12:53:03,110 INFO L231 Difference]: Finished difference. Result has 242 places, 143 transitions, 966 flow [2024-06-14 12:53:03,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=960, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=966, PETRI_PLACES=242, PETRI_TRANSITIONS=143} [2024-06-14 12:53:03,110 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 211 predicate places. [2024-06-14 12:53:03,111 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 143 transitions, 966 flow [2024-06-14 12:53:03,111 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 12:53:03,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:53:03,111 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 12:53:03,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-14 12:53:03,111 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 12:53:03,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:53:03,111 INFO L85 PathProgramCache]: Analyzing trace with hash 2000870821, now seen corresponding path program 39 times [2024-06-14 12:53:03,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:53:03,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219061125] [2024-06-14 12:53:03,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:53:03,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:53:03,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:53:04,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:53:04,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:53:04,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219061125] [2024-06-14 12:53:04,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219061125] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:53:04,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:53:04,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:53:04,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774657355] [2024-06-14 12:53:04,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:53:04,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:53:04,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:53:04,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:53:04,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:53:05,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:53:05,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 143 transitions, 966 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 12:53:05,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:53:05,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:53:05,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:53:05,584 INFO L124 PetriNetUnfolderBase]: 376/834 cut-off events. [2024-06-14 12:53:05,584 INFO L125 PetriNetUnfolderBase]: For 212522/212525 co-relation queries the response was YES. [2024-06-14 12:53:05,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6178 conditions, 834 events. 376/834 cut-off events. For 212522/212525 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4695 event pairs, 118 based on Foata normal form. 14/842 useless extension candidates. Maximal degree in co-relation 6062. Up to 632 conditions per place. [2024-06-14 12:53:05,590 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 116 selfloop transitions, 24 changer transitions 13/156 dead transitions. [2024-06-14 12:53:05,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 156 transitions, 1344 flow [2024-06-14 12:53:05,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:53:05,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:53:05,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-14 12:53:05,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-14 12:53:05,591 INFO L175 Difference]: Start difference. First operand has 242 places, 143 transitions, 966 flow. Second operand 12 states and 138 transitions. [2024-06-14 12:53:05,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 156 transitions, 1344 flow [2024-06-14 12:53:05,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 156 transitions, 1313 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-14 12:53:05,970 INFO L231 Difference]: Finished difference. Result has 236 places, 137 transitions, 949 flow [2024-06-14 12:53:05,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=935, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=949, PETRI_PLACES=236, PETRI_TRANSITIONS=137} [2024-06-14 12:53:05,971 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 205 predicate places. [2024-06-14 12:53:05,971 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 137 transitions, 949 flow [2024-06-14 12:53:05,971 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 12:53:05,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:53:05,971 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 12:53:05,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-14 12:53:05,971 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 12:53:05,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:53:05,972 INFO L85 PathProgramCache]: Analyzing trace with hash -2100469681, now seen corresponding path program 40 times [2024-06-14 12:53:05,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:53:05,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327688222] [2024-06-14 12:53:05,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:53:05,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:53:05,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:53:07,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:53:07,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:53:07,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327688222] [2024-06-14 12:53:07,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327688222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:53:07,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:53:07,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:53:07,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095410768] [2024-06-14 12:53:07,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:53:07,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:53:07,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:53:07,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:53:07,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:53:07,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:53:07,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 137 transitions, 949 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 12:53:07,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:53:07,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:53:07,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:53:08,283 INFO L124 PetriNetUnfolderBase]: 337/756 cut-off events. [2024-06-14 12:53:08,283 INFO L125 PetriNetUnfolderBase]: For 141941/141941 co-relation queries the response was YES. [2024-06-14 12:53:08,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5201 conditions, 756 events. 337/756 cut-off events. For 141941/141941 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4131 event pairs, 86 based on Foata normal form. 6/760 useless extension candidates. Maximal degree in co-relation 5088. Up to 647 conditions per place. [2024-06-14 12:53:08,289 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 126 selfloop transitions, 10 changer transitions 14/153 dead transitions. [2024-06-14 12:53:08,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 153 transitions, 1285 flow [2024-06-14 12:53:08,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:53:08,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:53:08,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 143 transitions. [2024-06-14 12:53:08,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-14 12:53:08,290 INFO L175 Difference]: Start difference. First operand has 236 places, 137 transitions, 949 flow. Second operand 13 states and 143 transitions. [2024-06-14 12:53:08,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 153 transitions, 1285 flow [2024-06-14 12:53:08,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 153 transitions, 1215 flow, removed 11 selfloop flow, removed 12 redundant places. [2024-06-14 12:53:08,560 INFO L231 Difference]: Finished difference. Result has 230 places, 131 transitions, 853 flow [2024-06-14 12:53:08,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=879, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=853, PETRI_PLACES=230, PETRI_TRANSITIONS=131} [2024-06-14 12:53:08,561 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 199 predicate places. [2024-06-14 12:53:08,561 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 131 transitions, 853 flow [2024-06-14 12:53:08,561 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 12:53:08,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:53:08,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:53:08,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-14 12:53:08,561 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 12:53:08,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:53:08,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1261327872, now seen corresponding path program 1 times [2024-06-14 12:53:08,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:53:08,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786197664] [2024-06-14 12:53:08,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:53:08,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:53:08,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:53:10,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:53:10,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:53:10,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786197664] [2024-06-14 12:53:10,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786197664] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:53:10,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:53:10,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:53:10,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746237304] [2024-06-14 12:53:10,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:53:10,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:53:10,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:53:10,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:53:10,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:53:10,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:53:10,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 131 transitions, 853 flow. Second operand has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:53:10,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:53:10,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:53:10,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:53:10,601 INFO L124 PetriNetUnfolderBase]: 328/733 cut-off events. [2024-06-14 12:53:10,601 INFO L125 PetriNetUnfolderBase]: For 133304/133304 co-relation queries the response was YES. [2024-06-14 12:53:10,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4947 conditions, 733 events. 328/733 cut-off events. For 133304/133304 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3964 event pairs, 81 based on Foata normal form. 6/737 useless extension candidates. Maximal degree in co-relation 4837. Up to 599 conditions per place. [2024-06-14 12:53:10,606 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 117 selfloop transitions, 11 changer transitions 20/151 dead transitions. [2024-06-14 12:53:10,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 151 transitions, 1213 flow [2024-06-14 12:53:10,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:53:10,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:53:10,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-14 12:53:10,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-14 12:53:10,607 INFO L175 Difference]: Start difference. First operand has 230 places, 131 transitions, 853 flow. Second operand 11 states and 129 transitions. [2024-06-14 12:53:10,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 151 transitions, 1213 flow [2024-06-14 12:53:10,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 151 transitions, 1115 flow, removed 7 selfloop flow, removed 14 redundant places. [2024-06-14 12:53:10,810 INFO L231 Difference]: Finished difference. Result has 216 places, 123 transitions, 747 flow [2024-06-14 12:53:10,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=759, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=747, PETRI_PLACES=216, PETRI_TRANSITIONS=123} [2024-06-14 12:53:10,811 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 185 predicate places. [2024-06-14 12:53:10,811 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 123 transitions, 747 flow [2024-06-14 12:53:10,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:53:10,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:53:10,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:53:10,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-14 12:53:10,811 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 12:53:10,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:53:10,811 INFO L85 PathProgramCache]: Analyzing trace with hash -778684844, now seen corresponding path program 2 times [2024-06-14 12:53:10,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:53:10,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641505813] [2024-06-14 12:53:10,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:53:10,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:53:10,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:53:12,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:53:12,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:53:12,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641505813] [2024-06-14 12:53:12,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641505813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:53:12,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:53:12,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:53:12,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878446652] [2024-06-14 12:53:12,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:53:12,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:53:12,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:53:12,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:53:12,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:53:12,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:53:12,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 123 transitions, 747 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 12:53:12,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:53:12,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:53:12,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:53:12,967 INFO L124 PetriNetUnfolderBase]: 306/689 cut-off events. [2024-06-14 12:53:12,967 INFO L125 PetriNetUnfolderBase]: For 126960/126960 co-relation queries the response was YES. [2024-06-14 12:53:12,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4565 conditions, 689 events. 306/689 cut-off events. For 126960/126960 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3694 event pairs, 81 based on Foata normal form. 6/693 useless extension candidates. Maximal degree in co-relation 4461. Up to 564 conditions per place. [2024-06-14 12:53:12,971 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 111 selfloop transitions, 17 changer transitions 10/141 dead transitions. [2024-06-14 12:53:12,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 141 transitions, 1075 flow [2024-06-14 12:53:12,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:53:12,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:53:12,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-14 12:53:12,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-14 12:53:12,972 INFO L175 Difference]: Start difference. First operand has 216 places, 123 transitions, 747 flow. Second operand 12 states and 135 transitions. [2024-06-14 12:53:12,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 141 transitions, 1075 flow [2024-06-14 12:53:13,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 141 transitions, 1043 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-14 12:53:13,174 INFO L231 Difference]: Finished difference. Result has 208 places, 120 transitions, 737 flow [2024-06-14 12:53:13,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=715, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=737, PETRI_PLACES=208, PETRI_TRANSITIONS=120} [2024-06-14 12:53:13,174 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 177 predicate places. [2024-06-14 12:53:13,175 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 120 transitions, 737 flow [2024-06-14 12:53:13,175 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 12:53:13,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:53:13,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:53:13,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-14 12:53:13,175 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 12:53:13,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:53:13,175 INFO L85 PathProgramCache]: Analyzing trace with hash -98980080, now seen corresponding path program 3 times [2024-06-14 12:53:13,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:53:13,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628567643] [2024-06-14 12:53:13,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:53:13,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:53:13,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:53:16,441 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 12:53:16,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:53:16,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628567643] [2024-06-14 12:53:16,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628567643] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:53:16,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:53:16,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:53:16,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978489604] [2024-06-14 12:53:16,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:53:16,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:53:16,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:53:16,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:53:16,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:53:16,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:53:16,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 120 transitions, 737 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 12:53:16,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:53:16,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:53:16,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:53:17,116 INFO L124 PetriNetUnfolderBase]: 299/676 cut-off events. [2024-06-14 12:53:17,116 INFO L125 PetriNetUnfolderBase]: For 115277/115277 co-relation queries the response was YES. [2024-06-14 12:53:17,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4415 conditions, 676 events. 299/676 cut-off events. For 115277/115277 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3606 event pairs, 77 based on Foata normal form. 6/680 useless extension candidates. Maximal degree in co-relation 4315. Up to 540 conditions per place. [2024-06-14 12:53:17,121 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 110 selfloop transitions, 16 changer transitions 10/139 dead transitions. [2024-06-14 12:53:17,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 139 transitions, 1063 flow [2024-06-14 12:53:17,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:53:17,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:53:17,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-14 12:53:17,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-14 12:53:17,122 INFO L175 Difference]: Start difference. First operand has 208 places, 120 transitions, 737 flow. Second operand 12 states and 136 transitions. [2024-06-14 12:53:17,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 139 transitions, 1063 flow [2024-06-14 12:53:17,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 139 transitions, 1023 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 12:53:17,310 INFO L231 Difference]: Finished difference. Result has 204 places, 116 transitions, 713 flow [2024-06-14 12:53:17,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=697, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=713, PETRI_PLACES=204, PETRI_TRANSITIONS=116} [2024-06-14 12:53:17,310 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 173 predicate places. [2024-06-14 12:53:17,310 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 116 transitions, 713 flow [2024-06-14 12:53:17,310 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 12:53:17,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:53:17,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:53:17,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-14 12:53:17,311 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 12:53:17,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:53:17,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1538193378, now seen corresponding path program 4 times [2024-06-14 12:53:17,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:53:17,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040214351] [2024-06-14 12:53:17,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:53:17,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:53:17,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:53:19,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:53:19,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:53:19,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040214351] [2024-06-14 12:53:19,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040214351] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:53:19,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:53:19,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:53:19,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119380000] [2024-06-14 12:53:19,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:53:19,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:53:19,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:53:19,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:53:19,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:53:19,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:53:19,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 116 transitions, 713 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 12:53:19,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:53:19,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:53:19,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:53:20,292 INFO L124 PetriNetUnfolderBase]: 288/653 cut-off events. [2024-06-14 12:53:20,292 INFO L125 PetriNetUnfolderBase]: For 109500/109500 co-relation queries the response was YES. [2024-06-14 12:53:20,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4293 conditions, 653 events. 288/653 cut-off events. For 109500/109500 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3435 event pairs, 79 based on Foata normal form. 6/657 useless extension candidates. Maximal degree in co-relation 4195. Up to 536 conditions per place. [2024-06-14 12:53:20,296 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 100 selfloop transitions, 6 changer transitions 25/134 dead transitions. [2024-06-14 12:53:20,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 134 transitions, 1027 flow [2024-06-14 12:53:20,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:53:20,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:53:20,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-14 12:53:20,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3463541666666667 [2024-06-14 12:53:20,297 INFO L175 Difference]: Start difference. First operand has 204 places, 116 transitions, 713 flow. Second operand 12 states and 133 transitions. [2024-06-14 12:53:20,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 134 transitions, 1027 flow [2024-06-14 12:53:20,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 134 transitions, 987 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-14 12:53:20,452 INFO L231 Difference]: Finished difference. Result has 198 places, 105 transitions, 621 flow [2024-06-14 12:53:20,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=673, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=621, PETRI_PLACES=198, PETRI_TRANSITIONS=105} [2024-06-14 12:53:20,452 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 167 predicate places. [2024-06-14 12:53:20,453 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 105 transitions, 621 flow [2024-06-14 12:53:20,453 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 12:53:20,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:53:20,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:53:20,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-14 12:53:20,453 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 12:53:20,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:53:20,453 INFO L85 PathProgramCache]: Analyzing trace with hash -261516250, now seen corresponding path program 5 times [2024-06-14 12:53:20,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:53:20,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815732640] [2024-06-14 12:53:20,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:53:20,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:53:20,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:53:22,125 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 12:53:22,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:53:22,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815732640] [2024-06-14 12:53:22,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815732640] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:53:22,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:53:22,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:53:22,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096110791] [2024-06-14 12:53:22,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:53:22,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:53:22,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:53:22,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:53:22,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:53:22,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:53:22,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 105 transitions, 621 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 12:53:22,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:53:22,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:53:22,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:53:22,587 INFO L124 PetriNetUnfolderBase]: 268/605 cut-off events. [2024-06-14 12:53:22,587 INFO L125 PetriNetUnfolderBase]: For 101185/101185 co-relation queries the response was YES. [2024-06-14 12:53:22,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4018 conditions, 605 events. 268/605 cut-off events. For 101185/101185 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3122 event pairs, 79 based on Foata normal form. 6/609 useless extension candidates. Maximal degree in co-relation 3936. Up to 503 conditions per place. [2024-06-14 12:53:22,592 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 94 selfloop transitions, 12 changer transitions 11/120 dead transitions. [2024-06-14 12:53:22,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 120 transitions, 895 flow [2024-06-14 12:53:22,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:53:22,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:53:22,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-14 12:53:22,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3463541666666667 [2024-06-14 12:53:22,592 INFO L175 Difference]: Start difference. First operand has 198 places, 105 transitions, 621 flow. Second operand 12 states and 133 transitions. [2024-06-14 12:53:22,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 120 transitions, 895 flow [2024-06-14 12:53:22,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 120 transitions, 860 flow, removed 9 selfloop flow, removed 13 redundant places. [2024-06-14 12:53:22,756 INFO L231 Difference]: Finished difference. Result has 182 places, 101 transitions, 595 flow [2024-06-14 12:53:22,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=595, PETRI_PLACES=182, PETRI_TRANSITIONS=101} [2024-06-14 12:53:22,756 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 151 predicate places. [2024-06-14 12:53:22,756 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 101 transitions, 595 flow [2024-06-14 12:53:22,756 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 12:53:22,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:53:22,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:53:22,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-14 12:53:22,756 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 12:53:22,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:53:22,757 INFO L85 PathProgramCache]: Analyzing trace with hash -2094114898, now seen corresponding path program 6 times [2024-06-14 12:53:22,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:53:22,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105446181] [2024-06-14 12:53:22,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:53:22,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:53:22,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:53:24,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:53:24,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:53:24,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105446181] [2024-06-14 12:53:24,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105446181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:53:24,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:53:24,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:53:24,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832541634] [2024-06-14 12:53:24,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:53:24,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:53:24,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:53:24,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:53:24,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:53:24,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:53:24,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 101 transitions, 595 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 12:53:24,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:53:24,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:53:24,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:53:25,280 INFO L124 PetriNetUnfolderBase]: 260/587 cut-off events. [2024-06-14 12:53:25,280 INFO L125 PetriNetUnfolderBase]: For 86394/86394 co-relation queries the response was YES. [2024-06-14 12:53:25,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3752 conditions, 587 events. 260/587 cut-off events. For 86394/86394 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2997 event pairs, 79 based on Foata normal form. 6/591 useless extension candidates. Maximal degree in co-relation 3677. Up to 493 conditions per place. [2024-06-14 12:53:25,283 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 92 selfloop transitions, 11 changer transitions 10/116 dead transitions. [2024-06-14 12:53:25,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 116 transitions, 859 flow [2024-06-14 12:53:25,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:53:25,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:53:25,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-14 12:53:25,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3411458333333333 [2024-06-14 12:53:25,284 INFO L175 Difference]: Start difference. First operand has 182 places, 101 transitions, 595 flow. Second operand 12 states and 131 transitions. [2024-06-14 12:53:25,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 116 transitions, 859 flow [2024-06-14 12:53:25,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 116 transitions, 827 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-14 12:53:25,395 INFO L231 Difference]: Finished difference. Result has 176 places, 98 transitions, 573 flow [2024-06-14 12:53:25,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=573, PETRI_PLACES=176, PETRI_TRANSITIONS=98} [2024-06-14 12:53:25,395 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 145 predicate places. [2024-06-14 12:53:25,396 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 98 transitions, 573 flow [2024-06-14 12:53:25,396 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 12:53:25,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:53:25,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:53:25,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-14 12:53:25,396 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 12:53:25,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:53:25,396 INFO L85 PathProgramCache]: Analyzing trace with hash -460962190, now seen corresponding path program 7 times [2024-06-14 12:53:25,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:53:25,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053246047] [2024-06-14 12:53:25,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:53:25,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:53:25,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:53:27,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:53:27,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:53:27,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053246047] [2024-06-14 12:53:27,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053246047] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:53:27,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:53:27,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:53:27,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057430743] [2024-06-14 12:53:27,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:53:27,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:53:27,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:53:27,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:53:27,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:53:27,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:53:27,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 98 transitions, 573 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 12:53:27,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:53:27,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:53:27,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:53:28,183 INFO L124 PetriNetUnfolderBase]: 253/574 cut-off events. [2024-06-14 12:53:28,183 INFO L125 PetriNetUnfolderBase]: For 79082/79082 co-relation queries the response was YES. [2024-06-14 12:53:28,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3619 conditions, 574 events. 253/574 cut-off events. For 79082/79082 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2911 event pairs, 77 based on Foata normal form. 6/578 useless extension candidates. Maximal degree in co-relation 3547. Up to 475 conditions per place. [2024-06-14 12:53:28,187 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 87 selfloop transitions, 7 changer transitions 17/114 dead transitions. [2024-06-14 12:53:28,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 114 transitions, 835 flow [2024-06-14 12:53:28,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:53:28,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:53:28,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-14 12:53:28,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3411458333333333 [2024-06-14 12:53:28,188 INFO L175 Difference]: Start difference. First operand has 176 places, 98 transitions, 573 flow. Second operand 12 states and 131 transitions. [2024-06-14 12:53:28,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 114 transitions, 835 flow [2024-06-14 12:53:28,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 114 transitions, 807 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 12:53:28,283 INFO L231 Difference]: Finished difference. Result has 172 places, 92 transitions, 535 flow [2024-06-14 12:53:28,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=545, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=535, PETRI_PLACES=172, PETRI_TRANSITIONS=92} [2024-06-14 12:53:28,283 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 141 predicate places. [2024-06-14 12:53:28,283 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 92 transitions, 535 flow [2024-06-14 12:53:28,283 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 12:53:28,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:53:28,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:53:28,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-14 12:53:28,283 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 12:53:28,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:53:28,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1236723622, now seen corresponding path program 8 times [2024-06-14 12:53:28,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:53:28,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496447395] [2024-06-14 12:53:28,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:53:28,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:53:28,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:53:30,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:53:30,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:53:30,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496447395] [2024-06-14 12:53:30,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496447395] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:53:30,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:53:30,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:53:30,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164430195] [2024-06-14 12:53:30,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:53:30,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:53:30,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:53:30,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:53:30,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:53:30,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:53:30,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 92 transitions, 535 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 12:53:30,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:53:30,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:53:30,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:53:31,442 INFO L124 PetriNetUnfolderBase]: 240/545 cut-off events. [2024-06-14 12:53:31,442 INFO L125 PetriNetUnfolderBase]: For 74376/74376 co-relation queries the response was YES. [2024-06-14 12:53:31,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3473 conditions, 545 events. 240/545 cut-off events. For 74376/74376 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2720 event pairs, 77 based on Foata normal form. 6/549 useless extension candidates. Maximal degree in co-relation 3403. Up to 447 conditions per place. [2024-06-14 12:53:31,445 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 82 selfloop transitions, 12 changer transitions 10/107 dead transitions. [2024-06-14 12:53:31,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 107 transitions, 781 flow [2024-06-14 12:53:31,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:53:31,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:53:31,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-14 12:53:31,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3411458333333333 [2024-06-14 12:53:31,446 INFO L175 Difference]: Start difference. First operand has 172 places, 92 transitions, 535 flow. Second operand 12 states and 131 transitions. [2024-06-14 12:53:31,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 107 transitions, 781 flow [2024-06-14 12:53:31,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 107 transitions, 755 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-14 12:53:31,533 INFO L231 Difference]: Finished difference. Result has 162 places, 89 transitions, 521 flow [2024-06-14 12:53:31,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=509, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=521, PETRI_PLACES=162, PETRI_TRANSITIONS=89} [2024-06-14 12:53:31,533 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 131 predicate places. [2024-06-14 12:53:31,533 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 89 transitions, 521 flow [2024-06-14 12:53:31,533 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 12:53:31,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:53:31,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:53:31,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-14 12:53:31,534 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 12:53:31,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:53:31,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1231217092, now seen corresponding path program 9 times [2024-06-14 12:53:31,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:53:31,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173205026] [2024-06-14 12:53:31,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:53:31,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:53:31,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:53:33,173 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 12:53:33,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:53:33,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173205026] [2024-06-14 12:53:33,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173205026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:53:33,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:53:33,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:53:33,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685537215] [2024-06-14 12:53:33,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:53:33,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:53:33,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:53:33,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:53:33,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:53:33,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:53:33,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 89 transitions, 521 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 12:53:33,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:53:33,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:53:33,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:53:33,604 INFO L124 PetriNetUnfolderBase]: 233/532 cut-off events. [2024-06-14 12:53:33,604 INFO L125 PetriNetUnfolderBase]: For 63354/63354 co-relation queries the response was YES. [2024-06-14 12:53:33,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3290 conditions, 532 events. 233/532 cut-off events. For 63354/63354 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2635 event pairs, 73 based on Foata normal form. 6/536 useless extension candidates. Maximal degree in co-relation 3225. Up to 423 conditions per place. [2024-06-14 12:53:33,608 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 81 selfloop transitions, 11 changer transitions 10/105 dead transitions. [2024-06-14 12:53:33,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 105 transitions, 765 flow [2024-06-14 12:53:33,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:53:33,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:53:33,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-14 12:53:33,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-14 12:53:33,609 INFO L175 Difference]: Start difference. First operand has 162 places, 89 transitions, 521 flow. Second operand 12 states and 132 transitions. [2024-06-14 12:53:33,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 105 transitions, 765 flow [2024-06-14 12:53:33,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 105 transitions, 735 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 12:53:33,687 INFO L231 Difference]: Finished difference. Result has 158 places, 85 transitions, 497 flow [2024-06-14 12:53:33,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=497, PETRI_PLACES=158, PETRI_TRANSITIONS=85} [2024-06-14 12:53:33,687 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 127 predicate places. [2024-06-14 12:53:33,687 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 85 transitions, 497 flow [2024-06-14 12:53:33,687 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 12:53:33,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:53:33,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:53:33,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-14 12:53:33,688 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 12:53:33,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:53:33,688 INFO L85 PathProgramCache]: Analyzing trace with hash -207996206, now seen corresponding path program 10 times [2024-06-14 12:53:33,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:53:33,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468401070] [2024-06-14 12:53:33,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:53:33,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:53:33,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:53:35,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:53:35,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:53:35,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468401070] [2024-06-14 12:53:35,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468401070] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:53:35,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:53:35,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:53:35,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549095503] [2024-06-14 12:53:35,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:53:35,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:53:35,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:53:35,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:53:35,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:53:35,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:53:35,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 85 transitions, 497 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 12:53:35,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:53:35,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:53:35,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:53:36,042 INFO L124 PetriNetUnfolderBase]: 207/476 cut-off events. [2024-06-14 12:53:36,042 INFO L125 PetriNetUnfolderBase]: For 49268/49268 co-relation queries the response was YES. [2024-06-14 12:53:36,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2736 conditions, 476 events. 207/476 cut-off events. For 49268/49268 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2274 event pairs, 62 based on Foata normal form. 6/480 useless extension candidates. Maximal degree in co-relation 2673. Up to 386 conditions per place. [2024-06-14 12:53:36,045 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 70 selfloop transitions, 3 changer transitions 24/100 dead transitions. [2024-06-14 12:53:36,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 100 transitions, 729 flow [2024-06-14 12:53:36,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:53:36,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:53:36,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-14 12:53:36,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3359375 [2024-06-14 12:53:36,046 INFO L175 Difference]: Start difference. First operand has 158 places, 85 transitions, 497 flow. Second operand 12 states and 129 transitions. [2024-06-14 12:53:36,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 100 transitions, 729 flow [2024-06-14 12:53:36,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 100 transitions, 699 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-14 12:53:36,100 INFO L231 Difference]: Finished difference. Result has 152 places, 75 transitions, 426 flow [2024-06-14 12:53:36,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=426, PETRI_PLACES=152, PETRI_TRANSITIONS=75} [2024-06-14 12:53:36,100 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 121 predicate places. [2024-06-14 12:53:36,100 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 75 transitions, 426 flow [2024-06-14 12:53:36,100 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 12:53:36,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:53:36,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:53:36,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-14 12:53:36,101 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 12:53:36,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:53:36,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1729658632, now seen corresponding path program 11 times [2024-06-14 12:53:36,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:53:36,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755924431] [2024-06-14 12:53:36,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:53:36,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:53:36,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:53:38,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:53:38,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:53:38,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755924431] [2024-06-14 12:53:38,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755924431] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:53:38,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:53:38,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:53:38,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776799555] [2024-06-14 12:53:38,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:53:38,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:53:38,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:53:38,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:53:38,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:53:38,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:53:38,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 75 transitions, 426 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 12:53:38,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:53:38,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:53:38,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:53:38,893 INFO L124 PetriNetUnfolderBase]: 191/435 cut-off events. [2024-06-14 12:53:38,894 INFO L125 PetriNetUnfolderBase]: For 44182/44182 co-relation queries the response was YES. [2024-06-14 12:53:38,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2524 conditions, 435 events. 191/435 cut-off events. For 44182/44182 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2054 event pairs, 62 based on Foata normal form. 6/440 useless extension candidates. Maximal degree in co-relation 2464. Up to 283 conditions per place. [2024-06-14 12:53:38,896 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 49 selfloop transitions, 26 changer transitions 10/88 dead transitions. [2024-06-14 12:53:38,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 88 transitions, 628 flow [2024-06-14 12:53:38,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:53:38,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:53:38,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-14 12:53:38,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-14 12:53:38,896 INFO L175 Difference]: Start difference. First operand has 152 places, 75 transitions, 426 flow. Second operand 12 states and 132 transitions. [2024-06-14 12:53:38,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 88 transitions, 628 flow [2024-06-14 12:53:38,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 88 transitions, 602 flow, removed 9 selfloop flow, removed 13 redundant places. [2024-06-14 12:53:38,950 INFO L231 Difference]: Finished difference. Result has 134 places, 72 transitions, 440 flow [2024-06-14 12:53:38,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=440, PETRI_PLACES=134, PETRI_TRANSITIONS=72} [2024-06-14 12:53:38,951 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 103 predicate places. [2024-06-14 12:53:38,951 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 72 transitions, 440 flow [2024-06-14 12:53:38,951 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 12:53:38,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:53:38,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:53:38,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-14 12:53:38,951 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 12:53:38,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:53:38,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1729802782, now seen corresponding path program 12 times [2024-06-14 12:53:38,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:53:38,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197563089] [2024-06-14 12:53:38,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:53:38,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:53:38,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:53:40,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:53:40,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:53:40,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197563089] [2024-06-14 12:53:40,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197563089] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:53:40,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:53:40,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:53:40,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815728031] [2024-06-14 12:53:40,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:53:40,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:53:40,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:53:40,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:53:40,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:53:40,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:53:40,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 72 transitions, 440 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 12:53:40,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:53:40,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:53:40,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:53:41,054 INFO L124 PetriNetUnfolderBase]: 184/422 cut-off events. [2024-06-14 12:53:41,054 INFO L125 PetriNetUnfolderBase]: For 33718/33718 co-relation queries the response was YES. [2024-06-14 12:53:41,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2354 conditions, 422 events. 184/422 cut-off events. For 33718/33718 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1972 event pairs, 56 based on Foata normal form. 6/427 useless extension candidates. Maximal degree in co-relation 2302. Up to 247 conditions per place. [2024-06-14 12:53:41,057 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 46 selfloop transitions, 27 changer transitions 10/86 dead transitions. [2024-06-14 12:53:41,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 86 transitions, 640 flow [2024-06-14 12:53:41,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:53:41,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:53:41,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-14 12:53:41,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3463541666666667 [2024-06-14 12:53:41,058 INFO L175 Difference]: Start difference. First operand has 134 places, 72 transitions, 440 flow. Second operand 12 states and 133 transitions. [2024-06-14 12:53:41,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 86 transitions, 640 flow [2024-06-14 12:53:41,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 86 transitions, 582 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 12:53:41,089 INFO L231 Difference]: Finished difference. Result has 130 places, 68 transitions, 420 flow [2024-06-14 12:53:41,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=420, PETRI_PLACES=130, PETRI_TRANSITIONS=68} [2024-06-14 12:53:41,089 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 99 predicate places. [2024-06-14 12:53:41,089 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 68 transitions, 420 flow [2024-06-14 12:53:41,089 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 12:53:41,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:53:41,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:53:41,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-14 12:53:41,089 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 12:53:41,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:53:41,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1530356842, now seen corresponding path program 13 times [2024-06-14 12:53:41,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:53:41,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101158496] [2024-06-14 12:53:41,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:53:41,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:53:41,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:53:42,930 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 12:53:42,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:53:42,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101158496] [2024-06-14 12:53:42,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101158496] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:53:42,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:53:42,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:53:42,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026087000] [2024-06-14 12:53:42,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:53:42,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:53:42,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:53:42,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:53:42,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:53:43,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:53:43,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 68 transitions, 420 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 12:53:43,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:53:43,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:53:43,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:53:43,499 INFO L124 PetriNetUnfolderBase]: 158/366 cut-off events. [2024-06-14 12:53:43,499 INFO L125 PetriNetUnfolderBase]: For 24696/24696 co-relation queries the response was YES. [2024-06-14 12:53:43,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1892 conditions, 366 events. 158/366 cut-off events. For 24696/24696 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1621 event pairs, 47 based on Foata normal form. 6/371 useless extension candidates. Maximal degree in co-relation 1842. Up to 222 conditions per place. [2024-06-14 12:53:43,501 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 46 selfloop transitions, 19 changer transitions 13/81 dead transitions. [2024-06-14 12:53:43,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 81 transitions, 608 flow [2024-06-14 12:53:43,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:53:43,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:53:43,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-14 12:53:43,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-14 12:53:43,502 INFO L175 Difference]: Start difference. First operand has 130 places, 68 transitions, 420 flow. Second operand 12 states and 132 transitions. [2024-06-14 12:53:43,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 81 transitions, 608 flow [2024-06-14 12:53:43,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 81 transitions, 546 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-14 12:53:43,527 INFO L231 Difference]: Finished difference. Result has 124 places, 63 transitions, 375 flow [2024-06-14 12:53:43,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=375, PETRI_PLACES=124, PETRI_TRANSITIONS=63} [2024-06-14 12:53:43,527 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 93 predicate places. [2024-06-14 12:53:43,527 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 63 transitions, 375 flow [2024-06-14 12:53:43,527 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 12:53:43,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:53:43,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:53:43,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-14 12:53:43,527 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 12:53:43,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:53:43,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1409677712, now seen corresponding path program 14 times [2024-06-14 12:53:43,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:53:43,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256637791] [2024-06-14 12:53:43,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:53:43,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:53:43,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:53:45,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:53:45,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:53:45,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256637791] [2024-06-14 12:53:45,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256637791] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:53:45,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:53:45,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:53:45,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720948269] [2024-06-14 12:53:45,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:53:45,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:53:45,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:53:45,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:53:45,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:53:45,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:53:45,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 63 transitions, 375 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 12:53:45,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:53:45,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:53:45,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:53:45,931 INFO L124 PetriNetUnfolderBase]: 149/345 cut-off events. [2024-06-14 12:53:45,931 INFO L125 PetriNetUnfolderBase]: For 21532/21532 co-relation queries the response was YES. [2024-06-14 12:53:45,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1755 conditions, 345 events. 149/345 cut-off events. For 21532/21532 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1505 event pairs, 47 based on Foata normal form. 6/350 useless extension candidates. Maximal degree in co-relation 1708. Up to 212 conditions per place. [2024-06-14 12:53:45,933 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 43 selfloop transitions, 15 changer transitions 15/76 dead transitions. [2024-06-14 12:53:45,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 76 transitions, 553 flow [2024-06-14 12:53:45,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:53:45,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:53:45,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-14 12:53:45,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-14 12:53:45,933 INFO L175 Difference]: Start difference. First operand has 124 places, 63 transitions, 375 flow. Second operand 12 states and 132 transitions. [2024-06-14 12:53:45,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 76 transitions, 553 flow [2024-06-14 12:53:45,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 76 transitions, 505 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-14 12:53:45,952 INFO L231 Difference]: Finished difference. Result has 115 places, 57 transitions, 332 flow [2024-06-14 12:53:45,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=332, PETRI_PLACES=115, PETRI_TRANSITIONS=57} [2024-06-14 12:53:45,952 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 84 predicate places. [2024-06-14 12:53:45,952 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 57 transitions, 332 flow [2024-06-14 12:53:45,952 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 12:53:45,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:53:45,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:53:45,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-14 12:53:45,952 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 12:53:45,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:53:45,952 INFO L85 PathProgramCache]: Analyzing trace with hash 2064419976, now seen corresponding path program 15 times [2024-06-14 12:53:45,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:53:45,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776268944] [2024-06-14 12:53:45,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:53:45,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:53:45,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:53:47,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:53:47,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:53:47,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776268944] [2024-06-14 12:53:47,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776268944] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:53:47,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:53:47,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:53:47,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359391627] [2024-06-14 12:53:47,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:53:47,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:53:47,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:53:47,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:53:47,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:53:47,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:53:47,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 57 transitions, 332 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 12:53:47,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:53:47,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:53:47,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:53:48,168 INFO L124 PetriNetUnfolderBase]: 124/288 cut-off events. [2024-06-14 12:53:48,168 INFO L125 PetriNetUnfolderBase]: For 13274/13274 co-relation queries the response was YES. [2024-06-14 12:53:48,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1289 conditions, 288 events. 124/288 cut-off events. For 13274/13274 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1157 event pairs, 34 based on Foata normal form. 6/293 useless extension candidates. Maximal degree in co-relation 1246. Up to 184 conditions per place. [2024-06-14 12:53:48,169 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 38 selfloop transitions, 16 changer transitions 13/70 dead transitions. [2024-06-14 12:53:48,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 70 transitions, 498 flow [2024-06-14 12:53:48,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:53:48,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:53:48,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-14 12:53:48,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489583333333333 [2024-06-14 12:53:48,170 INFO L175 Difference]: Start difference. First operand has 115 places, 57 transitions, 332 flow. Second operand 12 states and 134 transitions. [2024-06-14 12:53:48,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 70 transitions, 498 flow [2024-06-14 12:53:48,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 70 transitions, 452 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-14 12:53:48,179 INFO L231 Difference]: Finished difference. Result has 105 places, 52 transitions, 299 flow [2024-06-14 12:53:48,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=299, PETRI_PLACES=105, PETRI_TRANSITIONS=52} [2024-06-14 12:53:48,179 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 74 predicate places. [2024-06-14 12:53:48,179 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 52 transitions, 299 flow [2024-06-14 12:53:48,179 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 12:53:48,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:53:48,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:53:48,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-14 12:53:48,180 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 12:53:48,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:53:48,180 INFO L85 PathProgramCache]: Analyzing trace with hash -989412216, now seen corresponding path program 16 times [2024-06-14 12:53:48,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:53:48,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756557146] [2024-06-14 12:53:48,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:53:48,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:53:48,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:53:50,258 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 12:53:50,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:53:50,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756557146] [2024-06-14 12:53:50,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756557146] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:53:50,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:53:50,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:53:50,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13189232] [2024-06-14 12:53:50,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:53:50,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:53:50,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:53:50,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:53:50,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:53:50,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:53:50,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 52 transitions, 299 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 12:53:50,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:53:50,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:53:50,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:53:50,753 INFO L124 PetriNetUnfolderBase]: 115/267 cut-off events. [2024-06-14 12:53:50,753 INFO L125 PetriNetUnfolderBase]: For 10208/10208 co-relation queries the response was YES. [2024-06-14 12:53:50,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1152 conditions, 267 events. 115/267 cut-off events. For 10208/10208 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1027 event pairs, 34 based on Foata normal form. 6/272 useless extension candidates. Maximal degree in co-relation 1114. Up to 198 conditions per place. [2024-06-14 12:53:50,755 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 40 selfloop transitions, 4 changer transitions 18/65 dead transitions. [2024-06-14 12:53:50,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 65 transitions, 453 flow [2024-06-14 12:53:50,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:53:50,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:53:50,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-14 12:53:50,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255208333333333 [2024-06-14 12:53:50,756 INFO L175 Difference]: Start difference. First operand has 105 places, 52 transitions, 299 flow. Second operand 12 states and 125 transitions. [2024-06-14 12:53:50,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 65 transitions, 453 flow [2024-06-14 12:53:50,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 65 transitions, 407 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-14 12:53:50,763 INFO L231 Difference]: Finished difference. Result has 96 places, 45 transitions, 236 flow [2024-06-14 12:53:50,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=236, PETRI_PLACES=96, PETRI_TRANSITIONS=45} [2024-06-14 12:53:50,764 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 65 predicate places. [2024-06-14 12:53:50,764 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 45 transitions, 236 flow [2024-06-14 12:53:50,764 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 12:53:50,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:53:50,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:53:50,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2024-06-14 12:53:50,764 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 12:53:50,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:53:50,764 INFO L85 PathProgramCache]: Analyzing trace with hash -705548378, now seen corresponding path program 17 times [2024-06-14 12:53:50,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:53:50,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746022424] [2024-06-14 12:53:50,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:53:50,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:53:50,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:53:53,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:53:53,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:53:53,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746022424] [2024-06-14 12:53:53,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746022424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:53:53,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:53:53,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:53:53,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872847382] [2024-06-14 12:53:53,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:53:53,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:53:53,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:53:53,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:53:53,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:53:53,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:53:53,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 45 transitions, 236 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 12:53:53,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:53:53,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:53:53,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:53:53,590 INFO L124 PetriNetUnfolderBase]: 104/240 cut-off events. [2024-06-14 12:53:53,590 INFO L125 PetriNetUnfolderBase]: For 8058/8058 co-relation queries the response was YES. [2024-06-14 12:53:53,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 990 conditions, 240 events. 104/240 cut-off events. For 8058/8058 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 879 event pairs, 34 based on Foata normal form. 6/245 useless extension candidates. Maximal degree in co-relation 956. Up to 149 conditions per place. [2024-06-14 12:53:53,591 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 31 selfloop transitions, 14 changer transitions 10/58 dead transitions. [2024-06-14 12:53:53,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 58 transitions, 374 flow [2024-06-14 12:53:53,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:53:53,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:53:53,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-14 12:53:53,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3359375 [2024-06-14 12:53:53,592 INFO L175 Difference]: Start difference. First operand has 96 places, 45 transitions, 236 flow. Second operand 12 states and 129 transitions. [2024-06-14 12:53:53,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 58 transitions, 374 flow [2024-06-14 12:53:53,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 58 transitions, 356 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-14 12:53:53,597 INFO L231 Difference]: Finished difference. Result has 86 places, 42 transitions, 235 flow [2024-06-14 12:53:53,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=235, PETRI_PLACES=86, PETRI_TRANSITIONS=42} [2024-06-14 12:53:53,598 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 55 predicate places. [2024-06-14 12:53:53,598 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 42 transitions, 235 flow [2024-06-14 12:53:53,598 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 12:53:53,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:53:53,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:53:53,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2024-06-14 12:53:53,598 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 12:53:53,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:53:53,598 INFO L85 PathProgramCache]: Analyzing trace with hash -711054908, now seen corresponding path program 18 times [2024-06-14 12:53:53,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:53:53,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413781570] [2024-06-14 12:53:53,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:53:53,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:53:53,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:53:55,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:53:55,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:53:55,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413781570] [2024-06-14 12:53:55,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413781570] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:53:55,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:53:55,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:53:55,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144721540] [2024-06-14 12:53:55,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:53:55,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:53:55,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:53:55,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:53:55,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:53:56,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:53:56,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 42 transitions, 235 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 12:53:56,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:53:56,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:53:56,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:53:56,396 INFO L124 PetriNetUnfolderBase]: 97/227 cut-off events. [2024-06-14 12:53:56,396 INFO L125 PetriNetUnfolderBase]: For 6114/6114 co-relation queries the response was YES. [2024-06-14 12:53:56,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 922 conditions, 227 events. 97/227 cut-off events. For 6114/6114 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 823 event pairs, 30 based on Foata normal form. 6/232 useless extension candidates. Maximal degree in co-relation 892. Up to 125 conditions per place. [2024-06-14 12:53:56,397 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 30 selfloop transitions, 13 changer transitions 10/56 dead transitions. [2024-06-14 12:53:56,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 56 transitions, 371 flow [2024-06-14 12:53:56,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:53:56,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:53:56,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-14 12:53:56,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3385416666666667 [2024-06-14 12:53:56,398 INFO L175 Difference]: Start difference. First operand has 86 places, 42 transitions, 235 flow. Second operand 12 states and 130 transitions. [2024-06-14 12:53:56,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 56 transitions, 371 flow [2024-06-14 12:53:56,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 56 transitions, 337 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 12:53:56,402 INFO L231 Difference]: Finished difference. Result has 82 places, 38 transitions, 211 flow [2024-06-14 12:53:56,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=211, PETRI_PLACES=82, PETRI_TRANSITIONS=38} [2024-06-14 12:53:56,403 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 51 predicate places. [2024-06-14 12:53:56,403 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 38 transitions, 211 flow [2024-06-14 12:53:56,403 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 12:53:56,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:53:56,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:53:56,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2024-06-14 12:53:56,403 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 12:53:56,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:53:56,403 INFO L85 PathProgramCache]: Analyzing trace with hash -511608968, now seen corresponding path program 19 times [2024-06-14 12:53:56,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:53:56,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024238599] [2024-06-14 12:53:56,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:53:56,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:53:56,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:53:58,024 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 12:53:58,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:53:58,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024238599] [2024-06-14 12:53:58,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024238599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:53:58,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:53:58,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:53:58,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583357567] [2024-06-14 12:53:58,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:53:58,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:53:58,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:53:58,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:53:58,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:53:58,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:53:58,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 38 transitions, 211 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 12:53:58,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:53:58,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:53:58,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:53:58,398 INFO L124 PetriNetUnfolderBase]: 86/204 cut-off events. [2024-06-14 12:53:58,398 INFO L125 PetriNetUnfolderBase]: For 5180/5180 co-relation queries the response was YES. [2024-06-14 12:53:58,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 836 conditions, 204 events. 86/204 cut-off events. For 5180/5180 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 697 event pairs, 32 based on Foata normal form. 6/209 useless extension candidates. Maximal degree in co-relation 808. Up to 121 conditions per place. [2024-06-14 12:53:58,399 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 25 selfloop transitions, 8 changer transitions 15/51 dead transitions. [2024-06-14 12:53:58,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 51 transitions, 335 flow [2024-06-14 12:53:58,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:53:58,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:53:58,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-14 12:53:58,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3307291666666667 [2024-06-14 12:53:58,400 INFO L175 Difference]: Start difference. First operand has 82 places, 38 transitions, 211 flow. Second operand 12 states and 127 transitions. [2024-06-14 12:53:58,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 51 transitions, 335 flow [2024-06-14 12:53:58,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 51 transitions, 301 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-14 12:53:58,402 INFO L231 Difference]: Finished difference. Result has 76 places, 32 transitions, 169 flow [2024-06-14 12:53:58,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=169, PETRI_PLACES=76, PETRI_TRANSITIONS=32} [2024-06-14 12:53:58,403 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 45 predicate places. [2024-06-14 12:53:58,403 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 32 transitions, 169 flow [2024-06-14 12:53:58,403 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 12:53:58,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:53:58,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:53:58,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2024-06-14 12:53:58,403 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 12:53:58,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:53:58,404 INFO L85 PathProgramCache]: Analyzing trace with hash 2091179046, now seen corresponding path program 20 times [2024-06-14 12:53:58,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:53:58,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513673528] [2024-06-14 12:53:58,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:53:58,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:53:58,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:54:00,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:54:00,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:54:00,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513673528] [2024-06-14 12:54:00,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513673528] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:54:00,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:54:00,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:54:00,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761525885] [2024-06-14 12:54:00,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:54:00,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:54:00,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:54:00,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:54:00,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:54:00,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:54:00,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 32 transitions, 169 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 12:54:00,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:54:00,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:54:00,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:54:00,696 INFO L124 PetriNetUnfolderBase]: 61/147 cut-off events. [2024-06-14 12:54:00,696 INFO L125 PetriNetUnfolderBase]: For 2656/2656 co-relation queries the response was YES. [2024-06-14 12:54:00,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 523 conditions, 147 events. 61/147 cut-off events. For 2656/2656 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 423 event pairs, 19 based on Foata normal form. 6/152 useless extension candidates. Maximal degree in co-relation 498. Up to 78 conditions per place. [2024-06-14 12:54:00,697 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 22 selfloop transitions, 8 changer transitions 12/45 dead transitions. [2024-06-14 12:54:00,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 45 transitions, 281 flow [2024-06-14 12:54:00,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:54:00,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:54:00,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-14 12:54:00,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255208333333333 [2024-06-14 12:54:00,698 INFO L175 Difference]: Start difference. First operand has 76 places, 32 transitions, 169 flow. Second operand 12 states and 125 transitions. [2024-06-14 12:54:00,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 45 transitions, 281 flow [2024-06-14 12:54:00,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 45 transitions, 253 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-14 12:54:00,699 INFO L231 Difference]: Finished difference. Result has 66 places, 28 transitions, 140 flow [2024-06-14 12:54:00,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=140, PETRI_PLACES=66, PETRI_TRANSITIONS=28} [2024-06-14 12:54:00,700 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 35 predicate places. [2024-06-14 12:54:00,700 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 28 transitions, 140 flow [2024-06-14 12:54:00,700 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 12:54:00,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:54:00,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:54:00,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2024-06-14 12:54:00,700 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 12:54:00,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:54:00,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1116871690, now seen corresponding path program 21 times [2024-06-14 12:54:00,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:54:00,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383987947] [2024-06-14 12:54:00,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:54:00,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:54:00,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:54:03,332 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 12:54:03,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:54:03,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383987947] [2024-06-14 12:54:03,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383987947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:54:03,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:54:03,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:54:03,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548723118] [2024-06-14 12:54:03,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:54:03,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:54:03,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:54:03,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:54:03,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:54:03,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:54:03,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 28 transitions, 140 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 12:54:03,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:54:03,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:54:03,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:54:03,753 INFO L124 PetriNetUnfolderBase]: 53/129 cut-off events. [2024-06-14 12:54:03,753 INFO L125 PetriNetUnfolderBase]: For 1542/1542 co-relation queries the response was YES. [2024-06-14 12:54:03,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 438 conditions, 129 events. 53/129 cut-off events. For 1542/1542 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 326 event pairs, 17 based on Foata normal form. 6/134 useless extension candidates. Maximal degree in co-relation 418. Up to 60 conditions per place. [2024-06-14 12:54:03,754 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 18 selfloop transitions, 6 changer transitions 15/42 dead transitions. [2024-06-14 12:54:03,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 42 transitions, 248 flow [2024-06-14 12:54:03,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:54:03,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:54:03,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 124 transitions. [2024-06-14 12:54:03,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3229166666666667 [2024-06-14 12:54:03,754 INFO L175 Difference]: Start difference. First operand has 66 places, 28 transitions, 140 flow. Second operand 12 states and 124 transitions. [2024-06-14 12:54:03,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 42 transitions, 248 flow [2024-06-14 12:54:03,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 42 transitions, 224 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 12:54:03,755 INFO L231 Difference]: Finished difference. Result has 59 places, 23 transitions, 108 flow [2024-06-14 12:54:03,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=108, PETRI_PLACES=59, PETRI_TRANSITIONS=23} [2024-06-14 12:54:03,756 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 28 predicate places. [2024-06-14 12:54:03,756 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 23 transitions, 108 flow [2024-06-14 12:54:03,756 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 12:54:03,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:54:03,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:54:03,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2024-06-14 12:54:03,756 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 12:54:03,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:54:03,756 INFO L85 PathProgramCache]: Analyzing trace with hash 891350152, now seen corresponding path program 22 times [2024-06-14 12:54:03,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:54:03,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855869353] [2024-06-14 12:54:03,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:54:03,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:54:03,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:54:05,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:54:05,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:54:05,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855869353] [2024-06-14 12:54:05,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855869353] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:54:05,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:54:05,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:54:05,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108484042] [2024-06-14 12:54:05,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:54:05,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:54:05,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:54:05,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:54:05,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:54:05,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:54:05,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 23 transitions, 108 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 12:54:05,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:54:05,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:54:05,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:54:05,635 INFO L124 PetriNetUnfolderBase]: 26/70 cut-off events. [2024-06-14 12:54:05,635 INFO L125 PetriNetUnfolderBase]: For 516/516 co-relation queries the response was YES. [2024-06-14 12:54:05,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 70 events. 26/70 cut-off events. For 516/516 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 106 event pairs, 0 based on Foata normal form. 6/75 useless extension candidates. Maximal degree in co-relation 178. Up to 32 conditions per place. [2024-06-14 12:54:05,635 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 0 selfloop transitions, 0 changer transitions 31/31 dead transitions. [2024-06-14 12:54:05,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 31 transitions, 154 flow [2024-06-14 12:54:05,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:54:05,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:54:05,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-14 12:54:05,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30113636363636365 [2024-06-14 12:54:05,636 INFO L175 Difference]: Start difference. First operand has 59 places, 23 transitions, 108 flow. Second operand 11 states and 106 transitions. [2024-06-14 12:54:05,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 31 transitions, 154 flow [2024-06-14 12:54:05,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 31 transitions, 124 flow, removed 1 selfloop flow, removed 15 redundant places. [2024-06-14 12:54:05,636 INFO L231 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2024-06-14 12:54:05,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2024-06-14 12:54:05,637 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 13 predicate places. [2024-06-14 12:54:05,637 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2024-06-14 12:54:05,637 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 12:54:05,639 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-14 12:54:05,641 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-14 12:54:05,642 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-14 12:54:05,642 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-14 12:54:05,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2024-06-14 12:54:05,642 INFO L445 BasicCegarLoop]: Path program histogram: [40, 34, 22, 21, 20, 17, 15, 10, 7, 6, 6, 5, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:54:05,645 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-14 12:54:05,645 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-14 12:54:05,649 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-14 12:54:05,649 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-14 12:54:05,650 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.06 12:54:05 BasicIcfg [2024-06-14 12:54:05,650 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-14 12:54:05,650 INFO L158 Benchmark]: Toolchain (without parser) took 513511.44ms. Allocated memory was 176.2MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 101.3MB in the beginning and 1.1GB in the end (delta: -966.6MB). Peak memory consumption was 261.8MB. Max. memory is 16.1GB. [2024-06-14 12:54:05,651 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 100.7MB. Free memory was 62.6MB in the beginning and 62.6MB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-14 12:54:05,651 INFO L158 Benchmark]: Witness Parser took 3.53ms. Allocated memory is still 176.2MB. Free memory was 107.3MB in the beginning and 107.1MB in the end (delta: 146.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 12:54:05,651 INFO L158 Benchmark]: CACSL2BoogieTranslator took 684.60ms. Allocated memory is still 176.2MB. Free memory was 101.2MB in the beginning and 123.3MB in the end (delta: -22.1MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. [2024-06-14 12:54:05,651 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.11ms. Allocated memory is still 176.2MB. Free memory was 123.3MB in the beginning and 120.1MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-14 12:54:05,652 INFO L158 Benchmark]: Boogie Preprocessor took 53.87ms. Allocated memory is still 176.2MB. Free memory was 120.1MB in the beginning and 116.4MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-14 12:54:05,652 INFO L158 Benchmark]: RCFGBuilder took 816.49ms. Allocated memory is still 176.2MB. Free memory was 116.4MB in the beginning and 135.1MB in the end (delta: -18.7MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. [2024-06-14 12:54:05,652 INFO L158 Benchmark]: TraceAbstraction took 511876.00ms. Allocated memory was 176.2MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 133.9MB in the beginning and 1.1GB in the end (delta: -934.0MB). Peak memory consumption was 292.7MB. Max. memory is 16.1GB. [2024-06-14 12:54:05,654 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 100.7MB. Free memory was 62.6MB in the beginning and 62.6MB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Witness Parser took 3.53ms. Allocated memory is still 176.2MB. Free memory was 107.3MB in the beginning and 107.1MB in the end (delta: 146.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 684.60ms. Allocated memory is still 176.2MB. Free memory was 101.2MB in the beginning and 123.3MB in the end (delta: -22.1MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.11ms. Allocated memory is still 176.2MB. Free memory was 123.3MB in the beginning and 120.1MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.87ms. Allocated memory is still 176.2MB. Free memory was 120.1MB in the beginning and 116.4MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 816.49ms. Allocated memory is still 176.2MB. Free memory was 116.4MB in the beginning and 135.1MB in the end (delta: -18.7MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. * TraceAbstraction took 511876.00ms. Allocated memory was 176.2MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 133.9MB in the beginning and 1.1GB in the end (delta: -934.0MB). Peak memory consumption was 292.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 829]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 830]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 51 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 511.8s, OverallIterations: 227, TraceHistogramMax: 1, PathProgramHistogramMax: 40, EmptinessCheckTime: 0.0s, AutomataDifference: 189.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15153 SdHoareTripleChecker+Valid, 69.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13018 mSDsluCounter, 5582 SdHoareTripleChecker+Invalid, 60.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4943 mSDsCounter, 2754 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 110315 IncrementalHoareTripleChecker+Invalid, 113069 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2754 mSolverCounterUnsat, 639 mSDtfsCounter, 110315 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2723 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 2716 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6077 ImplicationChecksByTransitivity, 91.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3187occurred in iteration=116, InterpolantAutomatonStates: 2357, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 318.4s InterpolantComputationTime, 4012 NumberOfCodeBlocks, 4012 NumberOfCodeBlocksAsserted, 227 NumberOfCheckSat, 3785 ConstructedInterpolants, 0 QuantifiedInterpolants, 186340 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 227 InterpolantComputations, 227 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-14 12:54:05,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE