./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 76401ed0 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-76401ed-m [2024-06-20 16:38:30,114 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-20 16:38:30,224 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-20 16:38:30,230 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-20 16:38:30,230 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-20 16:38:30,261 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-20 16:38:30,262 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-20 16:38:30,262 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-20 16:38:30,263 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-20 16:38:30,267 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-20 16:38:30,267 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-20 16:38:30,267 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-20 16:38:30,268 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-20 16:38:30,269 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-20 16:38:30,270 INFO L153 SettingsManager]: * Use SBE=true [2024-06-20 16:38:30,270 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-20 16:38:30,270 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-20 16:38:30,271 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-20 16:38:30,271 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-20 16:38:30,271 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-20 16:38:30,272 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-20 16:38:30,272 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-20 16:38:30,272 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-20 16:38:30,273 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-20 16:38:30,273 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-20 16:38:30,273 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-20 16:38:30,273 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-20 16:38:30,274 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-20 16:38:30,274 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-20 16:38:30,275 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-20 16:38:30,275 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-20 16:38:30,276 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-20 16:38:30,276 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-20 16:38:30,276 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-20 16:38:30,276 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-20 16:38:30,277 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-20 16:38:30,277 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-20 16:38:30,277 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-20 16:38:30,277 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-20 16:38:30,277 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-20 16:38:30,278 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-20 16:38:30,278 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-20 16:38:30,278 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-20 16:38:30,278 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-20 16:38:30,538 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-20 16:38:30,567 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-20 16:38:30,570 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-20 16:38:30,571 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-20 16:38:30,571 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-20 16:38:30,572 INFO L431 ainManager$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 [2024-06-20 16:38:30,734 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-20 16:38:30,734 INFO L274 PluginConnector]: CDTParser initialized [2024-06-20 16:38:30,735 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi008.opt.i [2024-06-20 16:38:31,819 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-20 16:38:32,060 INFO L384 CDTParser]: Found 1 translation units. [2024-06-20 16:38:32,061 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi008.opt.i [2024-06-20 16:38:32,072 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5df6158c5/866acb4e7903456994055a5041ee7157/FLAG29b12f99f [2024-06-20 16:38:32,084 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5df6158c5/866acb4e7903456994055a5041ee7157 [2024-06-20 16:38:32,085 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-20 16:38:32,086 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-20 16:38:32,087 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-20 16:38:32,087 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-20 16:38:32,091 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-20 16:38:32,092 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 04:38:30" (1/2) ... [2024-06-20 16:38:32,093 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8e48f8a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:38:32, skipping insertion in model container [2024-06-20 16:38:32,093 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 04:38:30" (1/2) ... [2024-06-20 16:38:32,094 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@465afd58 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:38:32, skipping insertion in model container [2024-06-20 16:38:32,095 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.06 04:38:32" (2/2) ... [2024-06-20 16:38:32,095 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8e48f8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 04:38:32, skipping insertion in model container [2024-06-20 16:38:32,095 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.06 04:38:32" (2/2) ... [2024-06-20 16:38:32,095 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-20 16:38:32,156 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-20 16:38:32,157 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$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EBX && __unbuffered_p0_EBX <= 1) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) [2024-06-20 16:38:32,158 INFO L97 edCorrectnessWitness]: Location invariant before [L829-L829] ((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || y$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))) [2024-06-20 16:38:32,159 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-20 16:38:32,159 INFO L106 edCorrectnessWitness]: ghost_update [L827-L827] multithreaded = 1; [2024-06-20 16:38:32,209 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-20 16:38:32,608 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-20 16:38:32,618 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-20 16:38:32,738 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-20 16:38:32,827 INFO L206 MainTranslator]: Completed translation [2024-06-20 16:38:32,828 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 04:38:32 WrapperNode [2024-06-20 16:38:32,828 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-20 16:38:32,838 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-20 16:38:32,838 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-20 16:38:32,838 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-20 16:38:32,849 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 04:38:32" (1/1) ... [2024-06-20 16:38:32,865 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 04:38:32" (1/1) ... [2024-06-20 16:38:32,896 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 137 [2024-06-20 16:38:32,896 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-20 16:38:32,897 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-20 16:38:32,897 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-20 16:38:32,897 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-20 16:38:32,907 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 04:38:32" (1/1) ... [2024-06-20 16:38:32,907 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 04:38:32" (1/1) ... [2024-06-20 16:38:32,911 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 04:38:32" (1/1) ... [2024-06-20 16:38:32,933 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]. [2024-06-20 16:38:32,933 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 04:38:32" (1/1) ... [2024-06-20 16:38:32,934 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 04:38:32" (1/1) ... [2024-06-20 16:38:32,945 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 04:38:32" (1/1) ... [2024-06-20 16:38:32,947 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 04:38:32" (1/1) ... [2024-06-20 16:38:32,949 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 04:38:32" (1/1) ... [2024-06-20 16:38:32,950 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 04:38:32" (1/1) ... [2024-06-20 16:38:32,953 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-20 16:38:32,954 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-20 16:38:32,954 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-20 16:38:32,954 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-20 16:38:32,955 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 04:38:32" (1/1) ... [2024-06-20 16:38:32,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-20 16:38:32,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-20 16:38:32,997 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) [2024-06-20 16:38:33,010 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 [2024-06-20 16:38:33,036 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-20 16:38:33,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-20 16:38:33,037 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-20 16:38:33,037 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-20 16:38:33,037 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-20 16:38:33,037 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-20 16:38:33,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-20 16:38:33,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-20 16:38:33,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-20 16:38:33,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-20 16:38:33,039 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-20 16:38:33,158 INFO L244 CfgBuilder]: Building ICFG [2024-06-20 16:38:33,160 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-20 16:38:33,496 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-20 16:38:33,496 INFO L293 CfgBuilder]: Performing block encoding [2024-06-20 16:38:33,706 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-20 16:38:33,706 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-20 16:38:33,709 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 04:38:33 BoogieIcfgContainer [2024-06-20 16:38:33,709 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-20 16:38:33,711 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-20 16:38:33,711 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-20 16:38:33,714 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-20 16:38:33,714 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 04:38:30" (1/4) ... [2024-06-20 16:38:33,715 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c7310f9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.06 04:38:33, skipping insertion in model container [2024-06-20 16:38:33,715 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.06 04:38:32" (2/4) ... [2024-06-20 16:38:33,720 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c7310f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.06 04:38:33, skipping insertion in model container [2024-06-20 16:38:33,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 04:38:32" (3/4) ... [2024-06-20 16:38:33,720 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c7310f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.06 04:38:33, skipping insertion in model container [2024-06-20 16:38:33,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 04:38:33" (4/4) ... [2024-06-20 16:38:33,721 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi008.opt.i [2024-06-20 16:38:33,737 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-20 16:38:33,738 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-20 16:38:33,738 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-20 16:38:33,800 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-20 16:38:33,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 70 flow [2024-06-20 16:38:33,869 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2024-06-20 16:38:33,870 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-20 16:38:33,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 29 events. 0/29 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. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-20 16:38:33,872 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 31 transitions, 70 flow [2024-06-20 16:38:33,875 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 52 flow [2024-06-20 16:38:33,893 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-20 16:38:33,900 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;@2915fd5e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-20 16:38:33,901 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-20 16:38:33,905 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-20 16:38:33,906 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-20 16:38:33,906 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-20 16:38:33,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:38:33,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-20 16:38:33,907 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)] === [2024-06-20 16:38:33,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:38:33,913 INFO L85 PathProgramCache]: Analyzing trace with hash 362681797, now seen corresponding path program 1 times [2024-06-20 16:38:33,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:38:33,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004858218] [2024-06-20 16:38:33,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:38:33,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:38:34,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:38:35,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:38:35,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:38:35,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004858218] [2024-06-20 16:38:35,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004858218] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:38:35,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:38:35,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-20 16:38:35,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243026035] [2024-06-20 16:38:35,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:38:35,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-20 16:38:35,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:38:35,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-20 16:38:35,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-20 16:38:35,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-20 16:38:35,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:35,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:38:35,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-20 16:38:35,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:38:35,224 INFO L124 PetriNetUnfolderBase]: 131/261 cut-off events. [2024-06-20 16:38:35,225 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-20 16:38:35,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 517 conditions, 261 events. 131/261 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1019 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. [2024-06-20 16:38:35,231 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 20 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2024-06-20 16:38:35,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 113 flow [2024-06-20 16:38:35,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-20 16:38:35,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-20 16:38:35,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 58 transitions. [2024-06-20 16:38:35,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6236559139784946 [2024-06-20 16:38:35,242 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 52 flow. Second operand 3 states and 58 transitions. [2024-06-20 16:38:35,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 113 flow [2024-06-20 16:38:35,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 110 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-20 16:38:35,247 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 71 flow [2024-06-20 16:38:35,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2024-06-20 16:38:35,251 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-06-20 16:38:35,251 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 71 flow [2024-06-20 16:38:35,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:35,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:38:35,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:38:35,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-20 16:38:35,253 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)] === [2024-06-20 16:38:35,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:38:35,253 INFO L85 PathProgramCache]: Analyzing trace with hash 644883556, now seen corresponding path program 1 times [2024-06-20 16:38:35,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:38:35,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672894764] [2024-06-20 16:38:35,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:38:35,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:38:35,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:38:35,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:38:35,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:38:35,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672894764] [2024-06-20 16:38:35,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672894764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:38:35,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:38:35,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-20 16:38:35,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405853357] [2024-06-20 16:38:35,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:38:35,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-20 16:38:35,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:38:35,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-20 16:38:35,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-20 16:38:35,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-20 16:38:35,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:35,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:38:35,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-20 16:38:35,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:38:36,095 INFO L124 PetriNetUnfolderBase]: 186/341 cut-off events. [2024-06-20 16:38:36,096 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2024-06-20 16:38:36,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 783 conditions, 341 events. 186/341 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1272 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. [2024-06-20 16:38:36,102 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 26 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2024-06-20 16:38:36,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 159 flow [2024-06-20 16:38:36,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-20 16:38:36,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-20 16:38:36,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2024-06-20 16:38:36,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5564516129032258 [2024-06-20 16:38:36,106 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 71 flow. Second operand 4 states and 69 transitions. [2024-06-20 16:38:36,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 159 flow [2024-06-20 16:38:36,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 156 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-20 16:38:36,110 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 95 flow [2024-06-20 16:38:36,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=95, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2024-06-20 16:38:36,111 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2024-06-20 16:38:36,111 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 95 flow [2024-06-20 16:38:36,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:36,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:38:36,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:38:36,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-20 16:38:36,113 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)] === [2024-06-20 16:38:36,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:38:36,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1483445320, now seen corresponding path program 1 times [2024-06-20 16:38:36,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:38:36,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941626241] [2024-06-20 16:38:36,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:38:36,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:38:36,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:38:36,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:38:36,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:38:36,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941626241] [2024-06-20 16:38:36,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941626241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:38:36,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:38:36,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-20 16:38:36,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117091588] [2024-06-20 16:38:36,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:38:37,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-20 16:38:37,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:38:37,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-20 16:38:37,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-20 16:38:37,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-20 16:38:37,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 95 flow. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:37,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:38:37,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-20 16:38:37,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:38:37,193 INFO L124 PetriNetUnfolderBase]: 180/331 cut-off events. [2024-06-20 16:38:37,193 INFO L125 PetriNetUnfolderBase]: For 198/198 co-relation queries the response was YES. [2024-06-20 16:38:37,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 841 conditions, 331 events. 180/331 cut-off events. For 198/198 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1222 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. [2024-06-20 16:38:37,195 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 31 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2024-06-20 16:38:37,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 42 transitions, 211 flow [2024-06-20 16:38:37,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-20 16:38:37,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-20 16:38:37,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 85 transitions. [2024-06-20 16:38:37,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5483870967741935 [2024-06-20 16:38:37,197 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 95 flow. Second operand 5 states and 85 transitions. [2024-06-20 16:38:37,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 42 transitions, 211 flow [2024-06-20 16:38:37,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 42 transitions, 202 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-20 16:38:37,200 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 119 flow [2024-06-20 16:38:37,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=119, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2024-06-20 16:38:37,202 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 7 predicate places. [2024-06-20 16:38:37,202 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 119 flow [2024-06-20 16:38:37,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:37,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:38:37,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:38:37,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-20 16:38:37,202 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)] === [2024-06-20 16:38:37,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:38:37,203 INFO L85 PathProgramCache]: Analyzing trace with hash -105274318, now seen corresponding path program 1 times [2024-06-20 16:38:37,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:38:37,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924891154] [2024-06-20 16:38:37,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:38:37,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:38:37,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:38:38,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:38:38,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:38:38,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924891154] [2024-06-20 16:38:38,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924891154] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:38:38,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:38:38,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-20 16:38:38,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950402431] [2024-06-20 16:38:38,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:38:38,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-20 16:38:38,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:38:38,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-20 16:38:38,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-20 16:38:38,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-20 16:38:38,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 119 flow. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:38,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:38:38,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-20 16:38:38,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:38:38,266 INFO L124 PetriNetUnfolderBase]: 137/283 cut-off events. [2024-06-20 16:38:38,267 INFO L125 PetriNetUnfolderBase]: For 265/265 co-relation queries the response was YES. [2024-06-20 16:38:38,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 765 conditions, 283 events. 137/283 cut-off events. For 265/265 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1094 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. [2024-06-20 16:38:38,269 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 24 selfloop transitions, 6 changer transitions 0/36 dead transitions. [2024-06-20 16:38:38,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 36 transitions, 197 flow [2024-06-20 16:38:38,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-20 16:38:38,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-20 16:38:38,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 73 transitions. [2024-06-20 16:38:38,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47096774193548385 [2024-06-20 16:38:38,274 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 119 flow. Second operand 5 states and 73 transitions. [2024-06-20 16:38:38,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 36 transitions, 197 flow [2024-06-20 16:38:38,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 36 transitions, 182 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-20 16:38:38,277 INFO L231 Difference]: Finished difference. Result has 39 places, 31 transitions, 131 flow [2024-06-20 16:38:38,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=131, PETRI_PLACES=39, PETRI_TRANSITIONS=31} [2024-06-20 16:38:38,278 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2024-06-20 16:38:38,279 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 31 transitions, 131 flow [2024-06-20 16:38:38,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:38,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:38:38,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:38:38,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-20 16:38:38,280 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)] === [2024-06-20 16:38:38,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:38:38,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1894897058, now seen corresponding path program 1 times [2024-06-20 16:38:38,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:38:38,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091185500] [2024-06-20 16:38:38,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:38:38,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:38:38,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:38:39,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:38:39,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:38:39,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091185500] [2024-06-20 16:38:39,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091185500] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:38:39,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:38:39,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 16:38:39,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023917161] [2024-06-20 16:38:39,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:38:39,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 16:38:39,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:38:39,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 16:38:39,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-20 16:38:39,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-20 16:38:39,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 31 transitions, 131 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:39,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:38:39,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-20 16:38:39,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:38:39,967 INFO L124 PetriNetUnfolderBase]: 174/320 cut-off events. [2024-06-20 16:38:39,967 INFO L125 PetriNetUnfolderBase]: For 449/449 co-relation queries the response was YES. [2024-06-20 16:38:39,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 939 conditions, 320 events. 174/320 cut-off events. For 449/449 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1142 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. [2024-06-20 16:38:39,969 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 36 selfloop transitions, 10 changer transitions 0/50 dead transitions. [2024-06-20 16:38:39,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 50 transitions, 265 flow [2024-06-20 16:38:39,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:38:39,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:38:39,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 109 transitions. [2024-06-20 16:38:39,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5023041474654378 [2024-06-20 16:38:39,972 INFO L175 Difference]: Start difference. First operand has 39 places, 31 transitions, 131 flow. Second operand 7 states and 109 transitions. [2024-06-20 16:38:39,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 50 transitions, 265 flow [2024-06-20 16:38:39,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 50 transitions, 254 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-20 16:38:39,974 INFO L231 Difference]: Finished difference. Result has 43 places, 32 transitions, 147 flow [2024-06-20 16:38:39,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=147, PETRI_PLACES=43, PETRI_TRANSITIONS=32} [2024-06-20 16:38:39,975 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 13 predicate places. [2024-06-20 16:38:39,975 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 32 transitions, 147 flow [2024-06-20 16:38:39,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:39,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:38:39,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:38:39,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-20 16:38:39,976 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)] === [2024-06-20 16:38:39,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:38:39,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1042189699, now seen corresponding path program 1 times [2024-06-20 16:38:39,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:38:39,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053868028] [2024-06-20 16:38:39,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:38:39,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:38:39,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:38:41,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:38:41,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:38:41,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053868028] [2024-06-20 16:38:41,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053868028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:38:41,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:38:41,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 16:38:41,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821334228] [2024-06-20 16:38:41,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:38:41,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 16:38:41,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:38:41,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 16:38:41,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-20 16:38:41,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-20 16:38:41,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 32 transitions, 147 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:41,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:38:41,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-20 16:38:41,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:38:41,378 INFO L124 PetriNetUnfolderBase]: 131/270 cut-off events. [2024-06-20 16:38:41,378 INFO L125 PetriNetUnfolderBase]: For 518/518 co-relation queries the response was YES. [2024-06-20 16:38:41,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 840 conditions, 270 events. 131/270 cut-off events. For 518/518 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1021 event pairs, 37 based on Foata normal form. 1/270 useless extension candidates. Maximal degree in co-relation 821. Up to 229 conditions per place. [2024-06-20 16:38:41,380 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 26 selfloop transitions, 8 changer transitions 0/40 dead transitions. [2024-06-20 16:38:41,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 40 transitions, 237 flow [2024-06-20 16:38:41,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 16:38:41,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 16:38:41,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 84 transitions. [2024-06-20 16:38:41,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2024-06-20 16:38:41,382 INFO L175 Difference]: Start difference. First operand has 43 places, 32 transitions, 147 flow. Second operand 6 states and 84 transitions. [2024-06-20 16:38:41,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 40 transitions, 237 flow [2024-06-20 16:38:41,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 40 transitions, 215 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-20 16:38:41,386 INFO L231 Difference]: Finished difference. Result has 45 places, 34 transitions, 158 flow [2024-06-20 16:38:41,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=158, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2024-06-20 16:38:41,388 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 15 predicate places. [2024-06-20 16:38:41,388 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 158 flow [2024-06-20 16:38:41,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:41,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:38:41,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:38:41,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-20 16:38:41,390 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)] === [2024-06-20 16:38:41,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:38:41,390 INFO L85 PathProgramCache]: Analyzing trace with hash -761076105, now seen corresponding path program 1 times [2024-06-20 16:38:41,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:38:41,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539583325] [2024-06-20 16:38:41,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:38:41,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:38:41,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:38:42,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:38:42,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:38:42,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539583325] [2024-06-20 16:38:42,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539583325] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:38:42,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:38:42,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 16:38:42,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880688290] [2024-06-20 16:38:42,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:38:42,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 16:38:42,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:38:42,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 16:38:42,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-20 16:38:42,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:38:42,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 34 transitions, 158 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:42,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:38:42,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:38:42,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:38:42,384 INFO L124 PetriNetUnfolderBase]: 173/319 cut-off events. [2024-06-20 16:38:42,384 INFO L125 PetriNetUnfolderBase]: For 774/774 co-relation queries the response was YES. [2024-06-20 16:38:42,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1062 conditions, 319 events. 173/319 cut-off events. For 774/774 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1135 event pairs, 44 based on Foata normal form. 1/319 useless extension candidates. Maximal degree in co-relation 1041. Up to 294 conditions per place. [2024-06-20 16:38:42,387 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 34 selfloop transitions, 8 changer transitions 0/45 dead transitions. [2024-06-20 16:38:42,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 45 transitions, 272 flow [2024-06-20 16:38:42,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 16:38:42,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 16:38:42,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 77 transitions. [2024-06-20 16:38:42,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41397849462365593 [2024-06-20 16:38:42,389 INFO L175 Difference]: Start difference. First operand has 45 places, 34 transitions, 158 flow. Second operand 6 states and 77 transitions. [2024-06-20 16:38:42,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 45 transitions, 272 flow [2024-06-20 16:38:42,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 45 transitions, 255 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-20 16:38:42,392 INFO L231 Difference]: Finished difference. Result has 47 places, 36 transitions, 174 flow [2024-06-20 16:38:42,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=174, PETRI_PLACES=47, PETRI_TRANSITIONS=36} [2024-06-20 16:38:42,394 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2024-06-20 16:38:42,395 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 36 transitions, 174 flow [2024-06-20 16:38:42,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:42,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:38:42,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:38:42,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-20 16:38:42,396 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)] === [2024-06-20 16:38:42,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:38:42,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1910634641, now seen corresponding path program 2 times [2024-06-20 16:38:42,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:38:42,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814281851] [2024-06-20 16:38:42,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:38:42,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:38:42,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:38:43,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:38:43,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:38:43,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814281851] [2024-06-20 16:38:43,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814281851] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:38:43,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:38:43,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 16:38:43,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303622430] [2024-06-20 16:38:43,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:38:43,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 16:38:43,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:38:43,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 16:38:43,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-20 16:38:43,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:38:43,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 36 transitions, 174 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:43,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:38:43,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:38:43,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:38:43,365 INFO L124 PetriNetUnfolderBase]: 171/317 cut-off events. [2024-06-20 16:38:43,365 INFO L125 PetriNetUnfolderBase]: For 1009/1011 co-relation queries the response was YES. [2024-06-20 16:38:43,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1112 conditions, 317 events. 171/317 cut-off events. For 1009/1011 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1164 event pairs, 48 based on Foata normal form. 3/319 useless extension candidates. Maximal degree in co-relation 1090. Up to 285 conditions per place. [2024-06-20 16:38:43,368 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 30 selfloop transitions, 11 changer transitions 0/44 dead transitions. [2024-06-20 16:38:43,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 44 transitions, 282 flow [2024-06-20 16:38:43,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 16:38:43,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 16:38:43,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 76 transitions. [2024-06-20 16:38:43,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40860215053763443 [2024-06-20 16:38:43,369 INFO L175 Difference]: Start difference. First operand has 47 places, 36 transitions, 174 flow. Second operand 6 states and 76 transitions. [2024-06-20 16:38:43,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 44 transitions, 282 flow [2024-06-20 16:38:43,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 44 transitions, 265 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-20 16:38:43,372 INFO L231 Difference]: Finished difference. Result has 49 places, 38 transitions, 200 flow [2024-06-20 16:38:43,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=200, PETRI_PLACES=49, PETRI_TRANSITIONS=38} [2024-06-20 16:38:43,372 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 19 predicate places. [2024-06-20 16:38:43,373 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 38 transitions, 200 flow [2024-06-20 16:38:43,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:43,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:38:43,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:38:43,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-20 16:38:43,374 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)] === [2024-06-20 16:38:43,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:38:43,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1997840881, now seen corresponding path program 1 times [2024-06-20 16:38:43,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:38:43,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481262876] [2024-06-20 16:38:43,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:38:43,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:38:43,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:38:44,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:38:44,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:38:44,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481262876] [2024-06-20 16:38:44,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481262876] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:38:44,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:38:44,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:38:44,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907907994] [2024-06-20 16:38:44,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:38:44,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:38:44,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:38:44,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:38:44,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:38:44,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:38:44,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 38 transitions, 200 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:44,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:38:44,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:38:44,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:38:44,314 INFO L124 PetriNetUnfolderBase]: 189/351 cut-off events. [2024-06-20 16:38:44,315 INFO L125 PetriNetUnfolderBase]: For 1345/1345 co-relation queries the response was YES. [2024-06-20 16:38:44,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1299 conditions, 351 events. 189/351 cut-off events. For 1345/1345 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1313 event pairs, 44 based on Foata normal form. 2/352 useless extension candidates. Maximal degree in co-relation 1276. Up to 301 conditions per place. [2024-06-20 16:38:44,317 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 41 selfloop transitions, 16 changer transitions 0/60 dead transitions. [2024-06-20 16:38:44,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 60 transitions, 401 flow [2024-06-20 16:38:44,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:38:44,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:38:44,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-20 16:38:44,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4112903225806452 [2024-06-20 16:38:44,321 INFO L175 Difference]: Start difference. First operand has 49 places, 38 transitions, 200 flow. Second operand 8 states and 102 transitions. [2024-06-20 16:38:44,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 60 transitions, 401 flow [2024-06-20 16:38:44,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 60 transitions, 370 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-20 16:38:44,324 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 275 flow [2024-06-20 16:38:44,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=275, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2024-06-20 16:38:44,325 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 25 predicate places. [2024-06-20 16:38:44,325 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 275 flow [2024-06-20 16:38:44,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:44,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:38:44,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:38:44,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-20 16:38:44,326 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)] === [2024-06-20 16:38:44,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:38:44,326 INFO L85 PathProgramCache]: Analyzing trace with hash -2118671221, now seen corresponding path program 2 times [2024-06-20 16:38:44,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:38:44,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972430320] [2024-06-20 16:38:44,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:38:44,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:38:44,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:38:45,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:38:45,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:38:45,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972430320] [2024-06-20 16:38:45,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972430320] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:38:45,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:38:45,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:38:45,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662331075] [2024-06-20 16:38:45,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:38:45,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:38:45,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:38:45,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:38:45,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:38:45,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:38:45,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 275 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:45,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:38:45,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:38:45,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:38:45,390 INFO L124 PetriNetUnfolderBase]: 195/363 cut-off events. [2024-06-20 16:38:45,391 INFO L125 PetriNetUnfolderBase]: For 1736/1736 co-relation queries the response was YES. [2024-06-20 16:38:45,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1451 conditions, 363 events. 195/363 cut-off events. For 1736/1736 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1384 event pairs, 43 based on Foata normal form. 2/364 useless extension candidates. Maximal degree in co-relation 1425. Up to 303 conditions per place. [2024-06-20 16:38:45,394 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 41 selfloop transitions, 18 changer transitions 0/62 dead transitions. [2024-06-20 16:38:45,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 62 transitions, 449 flow [2024-06-20 16:38:45,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:38:45,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:38:45,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-06-20 16:38:45,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-20 16:38:45,397 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 275 flow. Second operand 7 states and 91 transitions. [2024-06-20 16:38:45,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 62 transitions, 449 flow [2024-06-20 16:38:45,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 62 transitions, 425 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-20 16:38:45,400 INFO L231 Difference]: Finished difference. Result has 59 places, 49 transitions, 316 flow [2024-06-20 16:38:45,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=316, PETRI_PLACES=59, PETRI_TRANSITIONS=49} [2024-06-20 16:38:45,401 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 29 predicate places. [2024-06-20 16:38:45,401 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 49 transitions, 316 flow [2024-06-20 16:38:45,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:45,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:38:45,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:38:45,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-20 16:38:45,402 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)] === [2024-06-20 16:38:45,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:38:45,402 INFO L85 PathProgramCache]: Analyzing trace with hash -907218639, now seen corresponding path program 3 times [2024-06-20 16:38:45,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:38:45,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469228002] [2024-06-20 16:38:45,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:38:45,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:38:45,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:38:46,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:38:46,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:38:46,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469228002] [2024-06-20 16:38:46,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469228002] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:38:46,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:38:46,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:38:46,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888588725] [2024-06-20 16:38:46,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:38:46,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:38:46,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:38:46,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:38:46,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:38:46,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:38:46,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 49 transitions, 316 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:46,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:38:46,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:38:46,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:38:46,460 INFO L124 PetriNetUnfolderBase]: 201/375 cut-off events. [2024-06-20 16:38:46,461 INFO L125 PetriNetUnfolderBase]: For 2221/2221 co-relation queries the response was YES. [2024-06-20 16:38:46,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1583 conditions, 375 events. 201/375 cut-off events. For 2221/2221 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1451 event pairs, 45 based on Foata normal form. 2/376 useless extension candidates. Maximal degree in co-relation 1556. Up to 302 conditions per place. [2024-06-20 16:38:46,463 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 39 selfloop transitions, 20 changer transitions 0/62 dead transitions. [2024-06-20 16:38:46,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 62 transitions, 486 flow [2024-06-20 16:38:46,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:38:46,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:38:46,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-06-20 16:38:46,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-20 16:38:46,465 INFO L175 Difference]: Start difference. First operand has 59 places, 49 transitions, 316 flow. Second operand 7 states and 91 transitions. [2024-06-20 16:38:46,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 62 transitions, 486 flow [2024-06-20 16:38:46,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 62 transitions, 439 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-20 16:38:46,469 INFO L231 Difference]: Finished difference. Result has 61 places, 51 transitions, 338 flow [2024-06-20 16:38:46,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=338, PETRI_PLACES=61, PETRI_TRANSITIONS=51} [2024-06-20 16:38:46,470 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 31 predicate places. [2024-06-20 16:38:46,470 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 51 transitions, 338 flow [2024-06-20 16:38:46,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:46,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:38:46,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:38:46,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-20 16:38:46,471 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)] === [2024-06-20 16:38:46,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:38:46,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1106520212, now seen corresponding path program 1 times [2024-06-20 16:38:46,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:38:46,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852109381] [2024-06-20 16:38:46,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:38:46,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:38:46,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:38:47,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:38:47,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:38:47,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852109381] [2024-06-20 16:38:47,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852109381] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:38:47,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:38:47,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:38:47,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148922456] [2024-06-20 16:38:47,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:38:47,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:38:47,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:38:47,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:38:47,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:38:47,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:38:47,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 51 transitions, 338 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:47,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:38:47,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:38:47,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:38:47,700 INFO L124 PetriNetUnfolderBase]: 204/380 cut-off events. [2024-06-20 16:38:47,700 INFO L125 PetriNetUnfolderBase]: For 2139/2139 co-relation queries the response was YES. [2024-06-20 16:38:47,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1594 conditions, 380 events. 204/380 cut-off events. For 2139/2139 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1456 event pairs, 42 based on Foata normal form. 1/380 useless extension candidates. Maximal degree in co-relation 1566. Up to 340 conditions per place. [2024-06-20 16:38:47,703 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 48 selfloop transitions, 12 changer transitions 0/63 dead transitions. [2024-06-20 16:38:47,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 63 transitions, 498 flow [2024-06-20 16:38:47,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:38:47,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:38:47,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2024-06-20 16:38:47,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4009216589861751 [2024-06-20 16:38:47,704 INFO L175 Difference]: Start difference. First operand has 61 places, 51 transitions, 338 flow. Second operand 7 states and 87 transitions. [2024-06-20 16:38:47,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 63 transitions, 498 flow [2024-06-20 16:38:47,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 63 transitions, 449 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-20 16:38:47,708 INFO L231 Difference]: Finished difference. Result has 63 places, 53 transitions, 332 flow [2024-06-20 16:38:47,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=332, PETRI_PLACES=63, PETRI_TRANSITIONS=53} [2024-06-20 16:38:47,710 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 33 predicate places. [2024-06-20 16:38:47,710 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 53 transitions, 332 flow [2024-06-20 16:38:47,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:47,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:38:47,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:38:47,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-20 16:38:47,711 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)] === [2024-06-20 16:38:47,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:38:47,711 INFO L85 PathProgramCache]: Analyzing trace with hash -899866772, now seen corresponding path program 2 times [2024-06-20 16:38:47,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:38:47,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536977427] [2024-06-20 16:38:47,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:38:47,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:38:47,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:38:48,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:38:48,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:38:48,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536977427] [2024-06-20 16:38:48,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536977427] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:38:48,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:38:48,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:38:48,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363463301] [2024-06-20 16:38:48,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:38:48,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:38:48,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:38:48,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:38:48,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:38:48,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:38:48,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 53 transitions, 332 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:48,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:38:48,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:38:48,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:38:49,076 INFO L124 PetriNetUnfolderBase]: 207/386 cut-off events. [2024-06-20 16:38:49,076 INFO L125 PetriNetUnfolderBase]: For 2434/2436 co-relation queries the response was YES. [2024-06-20 16:38:49,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1643 conditions, 386 events. 207/386 cut-off events. For 2434/2436 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1492 event pairs, 45 based on Foata normal form. 3/388 useless extension candidates. Maximal degree in co-relation 1614. Up to 339 conditions per place. [2024-06-20 16:38:49,079 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 45 selfloop transitions, 15 changer transitions 0/63 dead transitions. [2024-06-20 16:38:49,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 63 transitions, 490 flow [2024-06-20 16:38:49,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:38:49,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:38:49,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-06-20 16:38:49,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39631336405529954 [2024-06-20 16:38:49,081 INFO L175 Difference]: Start difference. First operand has 63 places, 53 transitions, 332 flow. Second operand 7 states and 86 transitions. [2024-06-20 16:38:49,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 63 transitions, 490 flow [2024-06-20 16:38:49,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 63 transitions, 463 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-20 16:38:49,085 INFO L231 Difference]: Finished difference. Result has 65 places, 55 transitions, 358 flow [2024-06-20 16:38:49,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=358, PETRI_PLACES=65, PETRI_TRANSITIONS=55} [2024-06-20 16:38:49,086 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 35 predicate places. [2024-06-20 16:38:49,086 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 55 transitions, 358 flow [2024-06-20 16:38:49,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:49,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:38:49,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:38:49,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-20 16:38:49,087 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)] === [2024-06-20 16:38:49,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:38:49,087 INFO L85 PathProgramCache]: Analyzing trace with hash -899866989, now seen corresponding path program 4 times [2024-06-20 16:38:49,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:38:49,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101934787] [2024-06-20 16:38:49,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:38:49,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:38:49,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:38:49,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:38:49,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:38:49,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101934787] [2024-06-20 16:38:49,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101934787] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:38:49,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:38:49,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:38:49,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484404953] [2024-06-20 16:38:49,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:38:49,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:38:49,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:38:49,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:38:49,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:38:49,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:38:49,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 55 transitions, 358 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:49,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:38:49,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:38:49,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:38:50,100 INFO L124 PetriNetUnfolderBase]: 208/390 cut-off events. [2024-06-20 16:38:50,101 INFO L125 PetriNetUnfolderBase]: For 2860/2862 co-relation queries the response was YES. [2024-06-20 16:38:50,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1715 conditions, 390 events. 208/390 cut-off events. For 2860/2862 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1528 event pairs, 50 based on Foata normal form. 2/391 useless extension candidates. Maximal degree in co-relation 1685. Up to 302 conditions per place. [2024-06-20 16:38:50,104 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 39 selfloop transitions, 24 changer transitions 0/66 dead transitions. [2024-06-20 16:38:50,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 66 transitions, 530 flow [2024-06-20 16:38:50,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:38:50,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:38:50,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 90 transitions. [2024-06-20 16:38:50,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147465437788018 [2024-06-20 16:38:50,106 INFO L175 Difference]: Start difference. First operand has 65 places, 55 transitions, 358 flow. Second operand 7 states and 90 transitions. [2024-06-20 16:38:50,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 66 transitions, 530 flow [2024-06-20 16:38:50,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 66 transitions, 493 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-20 16:38:50,111 INFO L231 Difference]: Finished difference. Result has 67 places, 57 transitions, 398 flow [2024-06-20 16:38:50,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=398, PETRI_PLACES=67, PETRI_TRANSITIONS=57} [2024-06-20 16:38:50,111 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 37 predicate places. [2024-06-20 16:38:50,112 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 57 transitions, 398 flow [2024-06-20 16:38:50,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:50,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:38:50,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:38:50,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-20 16:38:50,112 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)] === [2024-06-20 16:38:50,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:38:50,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1100948582, now seen corresponding path program 3 times [2024-06-20 16:38:50,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:38:50,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48105460] [2024-06-20 16:38:50,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:38:50,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:38:50,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:38:51,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:38:51,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:38:51,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48105460] [2024-06-20 16:38:51,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48105460] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:38:51,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:38:51,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:38:51,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546893120] [2024-06-20 16:38:51,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:38:51,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:38:51,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:38:51,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:38:51,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:38:51,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:38:51,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 57 transitions, 398 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:51,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:38:51,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:38:51,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:38:51,452 INFO L124 PetriNetUnfolderBase]: 206/387 cut-off events. [2024-06-20 16:38:51,452 INFO L125 PetriNetUnfolderBase]: For 3170/3172 co-relation queries the response was YES. [2024-06-20 16:38:51,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1773 conditions, 387 events. 206/387 cut-off events. For 3170/3172 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1514 event pairs, 45 based on Foata normal form. 3/389 useless extension candidates. Maximal degree in co-relation 1742. Up to 329 conditions per place. [2024-06-20 16:38:51,455 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 46 selfloop transitions, 20 changer transitions 0/69 dead transitions. [2024-06-20 16:38:51,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 69 transitions, 582 flow [2024-06-20 16:38:51,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:38:51,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:38:51,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2024-06-20 16:38:51,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4009216589861751 [2024-06-20 16:38:51,456 INFO L175 Difference]: Start difference. First operand has 67 places, 57 transitions, 398 flow. Second operand 7 states and 87 transitions. [2024-06-20 16:38:51,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 69 transitions, 582 flow [2024-06-20 16:38:51,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 69 transitions, 521 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-20 16:38:51,461 INFO L231 Difference]: Finished difference. Result has 70 places, 61 transitions, 425 flow [2024-06-20 16:38:51,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=425, PETRI_PLACES=70, PETRI_TRANSITIONS=61} [2024-06-20 16:38:51,463 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 40 predicate places. [2024-06-20 16:38:51,463 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 61 transitions, 425 flow [2024-06-20 16:38:51,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:51,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:38:51,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:38:51,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-20 16:38:51,464 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)] === [2024-06-20 16:38:51,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:38:51,464 INFO L85 PathProgramCache]: Analyzing trace with hash 816969826, now seen corresponding path program 1 times [2024-06-20 16:38:51,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:38:51,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86109231] [2024-06-20 16:38:51,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:38:51,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:38:51,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:38:53,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:38:53,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:38:53,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86109231] [2024-06-20 16:38:53,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86109231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:38:53,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:38:53,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:38:53,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815238332] [2024-06-20 16:38:53,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:38:53,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:38:53,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:38:53,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:38:53,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:38:53,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-20 16:38:53,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 61 transitions, 425 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 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) [2024-06-20 16:38:53,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:38:53,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-20 16:38:53,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:38:53,354 INFO L124 PetriNetUnfolderBase]: 189/366 cut-off events. [2024-06-20 16:38:53,355 INFO L125 PetriNetUnfolderBase]: For 3287/3292 co-relation queries the response was YES. [2024-06-20 16:38:53,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1666 conditions, 366 events. 189/366 cut-off events. For 3287/3292 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1455 event pairs, 43 based on Foata normal form. 6/370 useless extension candidates. Maximal degree in co-relation 1633. Up to 311 conditions per place. [2024-06-20 16:38:53,357 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 48 selfloop transitions, 12 changer transitions 0/71 dead transitions. [2024-06-20 16:38:53,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 71 transitions, 575 flow [2024-06-20 16:38:53,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:38:53,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:38:53,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-20 16:38:53,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40725806451612906 [2024-06-20 16:38:53,359 INFO L175 Difference]: Start difference. First operand has 70 places, 61 transitions, 425 flow. Second operand 8 states and 101 transitions. [2024-06-20 16:38:53,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 71 transitions, 575 flow [2024-06-20 16:38:53,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 71 transitions, 545 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-20 16:38:53,364 INFO L231 Difference]: Finished difference. Result has 75 places, 63 transitions, 438 flow [2024-06-20 16:38:53,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=438, PETRI_PLACES=75, PETRI_TRANSITIONS=63} [2024-06-20 16:38:53,364 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 45 predicate places. [2024-06-20 16:38:53,365 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 63 transitions, 438 flow [2024-06-20 16:38:53,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 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) [2024-06-20 16:38:53,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:38:53,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:38:53,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-20 16:38:53,365 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)] === [2024-06-20 16:38:53,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:38:53,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1254301746, now seen corresponding path program 1 times [2024-06-20 16:38:53,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:38:53,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622891776] [2024-06-20 16:38:53,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:38:53,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:38:53,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:38:54,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:38:54,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:38:54,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622891776] [2024-06-20 16:38:54,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622891776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:38:54,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:38:54,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:38:54,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180775016] [2024-06-20 16:38:54,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:38:54,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:38:54,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:38:54,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:38:54,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:38:54,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:38:54,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 63 transitions, 438 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:54,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:38:54,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:38:54,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:38:54,630 INFO L124 PetriNetUnfolderBase]: 202/380 cut-off events. [2024-06-20 16:38:54,630 INFO L125 PetriNetUnfolderBase]: For 3605/3605 co-relation queries the response was YES. [2024-06-20 16:38:54,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1810 conditions, 380 events. 202/380 cut-off events. For 3605/3605 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1483 event pairs, 40 based on Foata normal form. 1/380 useless extension candidates. Maximal degree in co-relation 1775. Up to 312 conditions per place. [2024-06-20 16:38:54,633 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 60 selfloop transitions, 18 changer transitions 0/81 dead transitions. [2024-06-20 16:38:54,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 81 transitions, 666 flow [2024-06-20 16:38:54,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:38:54,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:38:54,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-20 16:38:54,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4153225806451613 [2024-06-20 16:38:54,634 INFO L175 Difference]: Start difference. First operand has 75 places, 63 transitions, 438 flow. Second operand 8 states and 103 transitions. [2024-06-20 16:38:54,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 81 transitions, 666 flow [2024-06-20 16:38:54,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 81 transitions, 617 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-20 16:38:54,639 INFO L231 Difference]: Finished difference. Result has 76 places, 65 transitions, 458 flow [2024-06-20 16:38:54,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=458, PETRI_PLACES=76, PETRI_TRANSITIONS=65} [2024-06-20 16:38:54,639 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 46 predicate places. [2024-06-20 16:38:54,640 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 65 transitions, 458 flow [2024-06-20 16:38:54,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:54,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:38:54,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:38:54,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-20 16:38:54,640 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)] === [2024-06-20 16:38:54,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:38:54,641 INFO L85 PathProgramCache]: Analyzing trace with hash -680994902, now seen corresponding path program 1 times [2024-06-20 16:38:54,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:38:54,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305276619] [2024-06-20 16:38:54,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:38:54,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:38:54,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:38:55,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:38:55,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:38:55,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305276619] [2024-06-20 16:38:55,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305276619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:38:55,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:38:55,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:38:55,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484256939] [2024-06-20 16:38:55,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:38:55,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:38:55,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:38:55,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:38:55,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:38:55,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:38:55,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 65 transitions, 458 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:55,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:38:55,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:38:55,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:38:55,946 INFO L124 PetriNetUnfolderBase]: 208/392 cut-off events. [2024-06-20 16:38:55,946 INFO L125 PetriNetUnfolderBase]: For 4292/4292 co-relation queries the response was YES. [2024-06-20 16:38:55,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1907 conditions, 392 events. 208/392 cut-off events. For 4292/4292 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1546 event pairs, 38 based on Foata normal form. 2/393 useless extension candidates. Maximal degree in co-relation 1872. Up to 296 conditions per place. [2024-06-20 16:38:55,950 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 58 selfloop transitions, 22 changer transitions 0/83 dead transitions. [2024-06-20 16:38:55,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 83 transitions, 688 flow [2024-06-20 16:38:55,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:38:55,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:38:55,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-20 16:38:55,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4153225806451613 [2024-06-20 16:38:55,951 INFO L175 Difference]: Start difference. First operand has 76 places, 65 transitions, 458 flow. Second operand 8 states and 103 transitions. [2024-06-20 16:38:55,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 83 transitions, 688 flow [2024-06-20 16:38:55,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 83 transitions, 635 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-20 16:38:55,957 INFO L231 Difference]: Finished difference. Result has 78 places, 68 transitions, 487 flow [2024-06-20 16:38:55,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=487, PETRI_PLACES=78, PETRI_TRANSITIONS=68} [2024-06-20 16:38:55,958 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 48 predicate places. [2024-06-20 16:38:55,958 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 68 transitions, 487 flow [2024-06-20 16:38:55,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:55,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:38:55,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:38:55,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-20 16:38:55,960 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)] === [2024-06-20 16:38:55,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:38:55,960 INFO L85 PathProgramCache]: Analyzing trace with hash -680821922, now seen corresponding path program 2 times [2024-06-20 16:38:55,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:38:55,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206917841] [2024-06-20 16:38:55,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:38:55,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:38:55,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:38:57,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:38:57,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:38:57,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206917841] [2024-06-20 16:38:57,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206917841] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:38:57,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:38:57,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:38:57,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872587766] [2024-06-20 16:38:57,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:38:57,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:38:57,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:38:57,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:38:57,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:38:57,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:38:57,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 68 transitions, 487 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:57,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:38:57,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:38:57,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:38:57,411 INFO L124 PetriNetUnfolderBase]: 214/402 cut-off events. [2024-06-20 16:38:57,411 INFO L125 PetriNetUnfolderBase]: For 4936/4936 co-relation queries the response was YES. [2024-06-20 16:38:57,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2037 conditions, 402 events. 214/402 cut-off events. For 4936/4936 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1601 event pairs, 40 based on Foata normal form. 2/403 useless extension candidates. Maximal degree in co-relation 2001. Up to 319 conditions per place. [2024-06-20 16:38:57,415 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 57 selfloop transitions, 23 changer transitions 0/83 dead transitions. [2024-06-20 16:38:57,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 83 transitions, 715 flow [2024-06-20 16:38:57,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:38:57,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:38:57,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-20 16:38:57,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4112903225806452 [2024-06-20 16:38:57,418 INFO L175 Difference]: Start difference. First operand has 78 places, 68 transitions, 487 flow. Second operand 8 states and 102 transitions. [2024-06-20 16:38:57,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 83 transitions, 715 flow [2024-06-20 16:38:57,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 83 transitions, 659 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-20 16:38:57,429 INFO L231 Difference]: Finished difference. Result has 80 places, 71 transitions, 519 flow [2024-06-20 16:38:57,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=519, PETRI_PLACES=80, PETRI_TRANSITIONS=71} [2024-06-20 16:38:57,430 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 50 predicate places. [2024-06-20 16:38:57,430 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 71 transitions, 519 flow [2024-06-20 16:38:57,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:57,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:38:57,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:38:57,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-20 16:38:57,430 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)] === [2024-06-20 16:38:57,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:38:57,431 INFO L85 PathProgramCache]: Analyzing trace with hash -680815412, now seen corresponding path program 3 times [2024-06-20 16:38:57,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:38:57,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602528749] [2024-06-20 16:38:57,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:38:57,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:38:57,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:38:58,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:38:58,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:38:58,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602528749] [2024-06-20 16:38:58,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602528749] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:38:58,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:38:58,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:38:58,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336099203] [2024-06-20 16:38:58,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:38:58,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:38:58,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:38:58,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:38:58,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:38:58,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:38:58,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 71 transitions, 519 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:58,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:38:58,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:38:58,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:38:58,714 INFO L124 PetriNetUnfolderBase]: 220/412 cut-off events. [2024-06-20 16:38:58,715 INFO L125 PetriNetUnfolderBase]: For 5469/5469 co-relation queries the response was YES. [2024-06-20 16:38:58,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2152 conditions, 412 events. 220/412 cut-off events. For 5469/5469 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1648 event pairs, 40 based on Foata normal form. 1/412 useless extension candidates. Maximal degree in co-relation 2115. Up to 313 conditions per place. [2024-06-20 16:38:58,718 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 54 selfloop transitions, 29 changer transitions 0/86 dead transitions. [2024-06-20 16:38:58,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 86 transitions, 747 flow [2024-06-20 16:38:58,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:38:58,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:38:58,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-20 16:38:58,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4112903225806452 [2024-06-20 16:38:58,720 INFO L175 Difference]: Start difference. First operand has 80 places, 71 transitions, 519 flow. Second operand 8 states and 102 transitions. [2024-06-20 16:38:58,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 86 transitions, 747 flow [2024-06-20 16:38:58,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 86 transitions, 681 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-20 16:38:58,726 INFO L231 Difference]: Finished difference. Result has 83 places, 75 transitions, 564 flow [2024-06-20 16:38:58,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=564, PETRI_PLACES=83, PETRI_TRANSITIONS=75} [2024-06-20 16:38:58,727 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 53 predicate places. [2024-06-20 16:38:58,727 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 75 transitions, 564 flow [2024-06-20 16:38:58,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:58,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:38:58,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:38:58,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-20 16:38:58,728 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)] === [2024-06-20 16:38:58,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:38:58,728 INFO L85 PathProgramCache]: Analyzing trace with hash 57613328, now seen corresponding path program 1 times [2024-06-20 16:38:58,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:38:58,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544107035] [2024-06-20 16:38:58,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:38:58,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:38:58,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:38:59,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:38:59,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:38:59,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544107035] [2024-06-20 16:38:59,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544107035] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:38:59,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:38:59,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:38:59,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052215559] [2024-06-20 16:38:59,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:38:59,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:38:59,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:38:59,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:38:59,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:38:59,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:38:59,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 75 transitions, 564 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:59,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:38:59,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:38:59,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:39:00,126 INFO L124 PetriNetUnfolderBase]: 223/417 cut-off events. [2024-06-20 16:39:00,126 INFO L125 PetriNetUnfolderBase]: For 5948/5948 co-relation queries the response was YES. [2024-06-20 16:39:00,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2255 conditions, 417 events. 223/417 cut-off events. For 5948/5948 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1670 event pairs, 37 based on Foata normal form. 1/417 useless extension candidates. Maximal degree in co-relation 2216. Up to 370 conditions per place. [2024-06-20 16:39:00,130 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 71 selfloop transitions, 14 changer transitions 0/88 dead transitions. [2024-06-20 16:39:00,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 88 transitions, 784 flow [2024-06-20 16:39:00,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:39:00,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:39:00,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-20 16:39:00,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3911290322580645 [2024-06-20 16:39:00,132 INFO L175 Difference]: Start difference. First operand has 83 places, 75 transitions, 564 flow. Second operand 8 states and 97 transitions. [2024-06-20 16:39:00,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 88 transitions, 784 flow [2024-06-20 16:39:00,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 88 transitions, 725 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-20 16:39:00,142 INFO L231 Difference]: Finished difference. Result has 86 places, 77 transitions, 560 flow [2024-06-20 16:39:00,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=505, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=560, PETRI_PLACES=86, PETRI_TRANSITIONS=77} [2024-06-20 16:39:00,143 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 56 predicate places. [2024-06-20 16:39:00,143 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 77 transitions, 560 flow [2024-06-20 16:39:00,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:00,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:39:00,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:39:00,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-20 16:39:00,144 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)] === [2024-06-20 16:39:00,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:39:00,145 INFO L85 PathProgramCache]: Analyzing trace with hash -452319368, now seen corresponding path program 2 times [2024-06-20 16:39:00,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:39:00,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505849158] [2024-06-20 16:39:00,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:39:00,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:39:00,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:39:01,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:39:01,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:39:01,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505849158] [2024-06-20 16:39:01,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505849158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:39:01,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:39:01,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:39:01,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192561585] [2024-06-20 16:39:01,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:39:01,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:39:01,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:39:01,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:39:01,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:39:01,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:39:01,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 77 transitions, 560 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:01,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:39:01,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:39:01,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:39:01,253 INFO L124 PetriNetUnfolderBase]: 229/428 cut-off events. [2024-06-20 16:39:01,253 INFO L125 PetriNetUnfolderBase]: For 6676/6678 co-relation queries the response was YES. [2024-06-20 16:39:01,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2329 conditions, 428 events. 229/428 cut-off events. For 6676/6678 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1726 event pairs, 40 based on Foata normal form. 4/431 useless extension candidates. Maximal degree in co-relation 2289. Up to 371 conditions per place. [2024-06-20 16:39:01,256 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 69 selfloop transitions, 17 changer transitions 0/89 dead transitions. [2024-06-20 16:39:01,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 89 transitions, 784 flow [2024-06-20 16:39:01,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:39:01,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:39:01,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-20 16:39:01,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3911290322580645 [2024-06-20 16:39:01,261 INFO L175 Difference]: Start difference. First operand has 86 places, 77 transitions, 560 flow. Second operand 8 states and 97 transitions. [2024-06-20 16:39:01,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 89 transitions, 784 flow [2024-06-20 16:39:01,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 89 transitions, 745 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-20 16:39:01,269 INFO L231 Difference]: Finished difference. Result has 88 places, 79 transitions, 584 flow [2024-06-20 16:39:01,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=521, 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=584, PETRI_PLACES=88, PETRI_TRANSITIONS=79} [2024-06-20 16:39:01,269 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 58 predicate places. [2024-06-20 16:39:01,269 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 79 transitions, 584 flow [2024-06-20 16:39:01,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:01,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:39:01,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:39:01,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-20 16:39:01,270 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)] === [2024-06-20 16:39:01,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:39:01,270 INFO L85 PathProgramCache]: Analyzing trace with hash -452319616, now seen corresponding path program 4 times [2024-06-20 16:39:01,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:39:01,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667979310] [2024-06-20 16:39:01,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:39:01,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:39:01,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:39:02,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:39:02,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:39:02,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667979310] [2024-06-20 16:39:02,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667979310] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:39:02,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:39:02,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:39:02,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514316107] [2024-06-20 16:39:02,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:39:02,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:39:02,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:39:02,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:39:02,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:39:02,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:39:02,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 79 transitions, 584 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:02,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:39:02,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:39:02,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:39:02,702 INFO L124 PetriNetUnfolderBase]: 242/449 cut-off events. [2024-06-20 16:39:02,702 INFO L125 PetriNetUnfolderBase]: For 7608/7610 co-relation queries the response was YES. [2024-06-20 16:39:02,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2557 conditions, 449 events. 242/449 cut-off events. For 7608/7610 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1814 event pairs, 45 based on Foata normal form. 1/449 useless extension candidates. Maximal degree in co-relation 2516. Up to 345 conditions per place. [2024-06-20 16:39:02,705 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 62 selfloop transitions, 30 changer transitions 0/95 dead transitions. [2024-06-20 16:39:02,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 95 transitions, 916 flow [2024-06-20 16:39:02,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:39:02,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:39:02,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-20 16:39:02,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-20 16:39:02,708 INFO L175 Difference]: Start difference. First operand has 88 places, 79 transitions, 584 flow. Second operand 8 states and 104 transitions. [2024-06-20 16:39:02,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 95 transitions, 916 flow [2024-06-20 16:39:02,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 95 transitions, 871 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-20 16:39:02,716 INFO L231 Difference]: Finished difference. Result has 91 places, 84 transitions, 683 flow [2024-06-20 16:39:02,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=539, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=683, PETRI_PLACES=91, PETRI_TRANSITIONS=84} [2024-06-20 16:39:02,716 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 61 predicate places. [2024-06-20 16:39:02,717 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 84 transitions, 683 flow [2024-06-20 16:39:02,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:02,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:39:02,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:39:02,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-20 16:39:02,717 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)] === [2024-06-20 16:39:02,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:39:02,717 INFO L85 PathProgramCache]: Analyzing trace with hash -452326126, now seen corresponding path program 5 times [2024-06-20 16:39:02,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:39:02,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961066914] [2024-06-20 16:39:02,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:39:02,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:39:02,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:39:03,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:39:03,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:39:03,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961066914] [2024-06-20 16:39:03,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961066914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:39:03,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:39:03,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:39:03,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564433598] [2024-06-20 16:39:03,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:39:03,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:39:03,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:39:03,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:39:03,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:39:03,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:39:03,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 84 transitions, 683 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:03,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:39:03,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:39:03,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:39:04,030 INFO L124 PetriNetUnfolderBase]: 238/443 cut-off events. [2024-06-20 16:39:04,030 INFO L125 PetriNetUnfolderBase]: For 8305/8307 co-relation queries the response was YES. [2024-06-20 16:39:04,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2610 conditions, 443 events. 238/443 cut-off events. For 8305/8307 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1794 event pairs, 45 based on Foata normal form. 2/444 useless extension candidates. Maximal degree in co-relation 2567. Up to 347 conditions per place. [2024-06-20 16:39:04,034 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 64 selfloop transitions, 27 changer transitions 0/94 dead transitions. [2024-06-20 16:39:04,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 94 transitions, 913 flow [2024-06-20 16:39:04,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:39:04,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:39:04,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-20 16:39:04,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40725806451612906 [2024-06-20 16:39:04,036 INFO L175 Difference]: Start difference. First operand has 91 places, 84 transitions, 683 flow. Second operand 8 states and 101 transitions. [2024-06-20 16:39:04,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 94 transitions, 913 flow [2024-06-20 16:39:04,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 94 transitions, 832 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-20 16:39:04,048 INFO L231 Difference]: Finished difference. Result has 95 places, 84 transitions, 662 flow [2024-06-20 16:39:04,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=662, PETRI_PLACES=95, PETRI_TRANSITIONS=84} [2024-06-20 16:39:04,048 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 65 predicate places. [2024-06-20 16:39:04,049 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 84 transitions, 662 flow [2024-06-20 16:39:04,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:04,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:39:04,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:39:04,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-20 16:39:04,049 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)] === [2024-06-20 16:39:04,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:39:04,050 INFO L85 PathProgramCache]: Analyzing trace with hash -443748488, now seen corresponding path program 3 times [2024-06-20 16:39:04,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:39:04,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583109296] [2024-06-20 16:39:04,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:39:04,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:39:04,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:39:05,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:39:05,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:39:05,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583109296] [2024-06-20 16:39:05,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583109296] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:39:05,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:39:05,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:39:05,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254779390] [2024-06-20 16:39:05,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:39:05,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:39:05,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:39:05,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:39:05,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:39:05,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:39:05,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 84 transitions, 662 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:05,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:39:05,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:39:05,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:39:05,461 INFO L124 PetriNetUnfolderBase]: 241/447 cut-off events. [2024-06-20 16:39:05,461 INFO L125 PetriNetUnfolderBase]: For 8567/8567 co-relation queries the response was YES. [2024-06-20 16:39:05,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2670 conditions, 447 events. 241/447 cut-off events. For 8567/8567 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1803 event pairs, 41 based on Foata normal form. 1/447 useless extension candidates. Maximal degree in co-relation 2625. Up to 410 conditions per place. [2024-06-20 16:39:05,465 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 79 selfloop transitions, 12 changer transitions 0/94 dead transitions. [2024-06-20 16:39:05,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 94 transitions, 888 flow [2024-06-20 16:39:05,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:39:05,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:39:05,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-20 16:39:05,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-20 16:39:05,466 INFO L175 Difference]: Start difference. First operand has 95 places, 84 transitions, 662 flow. Second operand 8 states and 94 transitions. [2024-06-20 16:39:05,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 94 transitions, 888 flow [2024-06-20 16:39:05,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 94 transitions, 827 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-20 16:39:05,480 INFO L231 Difference]: Finished difference. Result has 96 places, 86 transitions, 658 flow [2024-06-20 16:39:05,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=601, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=658, PETRI_PLACES=96, PETRI_TRANSITIONS=86} [2024-06-20 16:39:05,481 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 66 predicate places. [2024-06-20 16:39:05,481 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 86 transitions, 658 flow [2024-06-20 16:39:05,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:05,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:39:05,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:39:05,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-20 16:39:05,481 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)] === [2024-06-20 16:39:05,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:39:05,482 INFO L85 PathProgramCache]: Analyzing trace with hash -444045158, now seen corresponding path program 4 times [2024-06-20 16:39:05,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:39:05,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378633704] [2024-06-20 16:39:05,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:39:05,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:39:05,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:39:06,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:39:06,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:39:06,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378633704] [2024-06-20 16:39:06,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378633704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:39:06,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:39:06,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:39:06,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206103894] [2024-06-20 16:39:06,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:39:06,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:39:06,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:39:06,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:39:06,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:39:06,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:39:06,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 86 transitions, 658 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:06,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:39:06,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:39:06,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:39:06,712 INFO L124 PetriNetUnfolderBase]: 239/445 cut-off events. [2024-06-20 16:39:06,712 INFO L125 PetriNetUnfolderBase]: For 8879/8881 co-relation queries the response was YES. [2024-06-20 16:39:06,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2639 conditions, 445 events. 239/445 cut-off events. For 8879/8881 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1802 event pairs, 40 based on Foata normal form. 3/447 useless extension candidates. Maximal degree in co-relation 2593. Up to 370 conditions per place. [2024-06-20 16:39:06,716 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 69 selfloop transitions, 27 changer transitions 0/99 dead transitions. [2024-06-20 16:39:06,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 99 transitions, 918 flow [2024-06-20 16:39:06,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:39:06,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:39:06,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-20 16:39:06,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39919354838709675 [2024-06-20 16:39:06,718 INFO L175 Difference]: Start difference. First operand has 96 places, 86 transitions, 658 flow. Second operand 8 states and 99 transitions. [2024-06-20 16:39:06,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 99 transitions, 918 flow [2024-06-20 16:39:06,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 99 transitions, 877 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-20 16:39:06,729 INFO L231 Difference]: Finished difference. Result has 99 places, 90 transitions, 736 flow [2024-06-20 16:39:06,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=617, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=736, PETRI_PLACES=99, PETRI_TRANSITIONS=90} [2024-06-20 16:39:06,729 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 69 predicate places. [2024-06-20 16:39:06,730 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 90 transitions, 736 flow [2024-06-20 16:39:06,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:06,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:39:06,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:39:06,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-20 16:39:06,730 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)] === [2024-06-20 16:39:06,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:39:06,731 INFO L85 PathProgramCache]: Analyzing trace with hash -452088976, now seen corresponding path program 6 times [2024-06-20 16:39:06,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:39:06,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481057787] [2024-06-20 16:39:06,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:39:06,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:39:06,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:39:07,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:39:07,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:39:07,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481057787] [2024-06-20 16:39:07,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481057787] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:39:07,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:39:07,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:39:07,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541431756] [2024-06-20 16:39:07,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:39:07,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:39:07,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:39:07,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:39:07,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:39:07,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:39:07,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 90 transitions, 736 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:07,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:39:07,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:39:07,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:39:07,965 INFO L124 PetriNetUnfolderBase]: 237/442 cut-off events. [2024-06-20 16:39:07,965 INFO L125 PetriNetUnfolderBase]: For 9328/9330 co-relation queries the response was YES. [2024-06-20 16:39:07,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2682 conditions, 442 events. 237/442 cut-off events. For 9328/9330 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1792 event pairs, 45 based on Foata normal form. 1/442 useless extension candidates. Maximal degree in co-relation 2634. Up to 309 conditions per place. [2024-06-20 16:39:07,968 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 55 selfloop transitions, 43 changer transitions 0/101 dead transitions. [2024-06-20 16:39:07,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 101 transitions, 996 flow [2024-06-20 16:39:07,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:39:07,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:39:07,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-20 16:39:07,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4112903225806452 [2024-06-20 16:39:07,969 INFO L175 Difference]: Start difference. First operand has 99 places, 90 transitions, 736 flow. Second operand 8 states and 102 transitions. [2024-06-20 16:39:07,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 101 transitions, 996 flow [2024-06-20 16:39:07,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 101 transitions, 948 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-20 16:39:07,980 INFO L231 Difference]: Finished difference. Result has 103 places, 92 transitions, 813 flow [2024-06-20 16:39:07,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=813, PETRI_PLACES=103, PETRI_TRANSITIONS=92} [2024-06-20 16:39:07,981 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 73 predicate places. [2024-06-20 16:39:07,981 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 92 transitions, 813 flow [2024-06-20 16:39:07,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:07,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:39:07,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:39:07,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-20 16:39:07,981 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)] === [2024-06-20 16:39:07,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:39:07,982 INFO L85 PathProgramCache]: Analyzing trace with hash -443737576, now seen corresponding path program 1 times [2024-06-20 16:39:07,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:39:07,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069963859] [2024-06-20 16:39:07,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:39:07,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:39:07,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:39:09,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:39:09,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:39:09,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069963859] [2024-06-20 16:39:09,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069963859] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:39:09,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:39:09,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:39:09,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860456129] [2024-06-20 16:39:09,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:39:09,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:39:09,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:39:09,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:39:09,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:39:09,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-20 16:39:09,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 92 transitions, 813 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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) [2024-06-20 16:39:09,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:39:09,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-20 16:39:09,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:39:09,870 INFO L124 PetriNetUnfolderBase]: 221/421 cut-off events. [2024-06-20 16:39:09,870 INFO L125 PetriNetUnfolderBase]: For 9793/9798 co-relation queries the response was YES. [2024-06-20 16:39:09,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2629 conditions, 421 events. 221/421 cut-off events. For 9793/9798 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1723 event pairs, 38 based on Foata normal form. 7/426 useless extension candidates. Maximal degree in co-relation 2579. Up to 346 conditions per place. [2024-06-20 16:39:09,874 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 73 selfloop transitions, 13 changer transitions 0/102 dead transitions. [2024-06-20 16:39:09,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 102 transitions, 1009 flow [2024-06-20 16:39:09,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:39:09,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:39:09,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-20 16:39:09,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-20 16:39:09,875 INFO L175 Difference]: Start difference. First operand has 103 places, 92 transitions, 813 flow. Second operand 9 states and 111 transitions. [2024-06-20 16:39:09,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 102 transitions, 1009 flow [2024-06-20 16:39:09,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 102 transitions, 900 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-20 16:39:09,890 INFO L231 Difference]: Finished difference. Result has 106 places, 92 transitions, 734 flow [2024-06-20 16:39:09,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=704, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=734, PETRI_PLACES=106, PETRI_TRANSITIONS=92} [2024-06-20 16:39:09,891 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 76 predicate places. [2024-06-20 16:39:09,891 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 92 transitions, 734 flow [2024-06-20 16:39:09,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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) [2024-06-20 16:39:09,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:39:09,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:39:09,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-20 16:39:09,891 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)] === [2024-06-20 16:39:09,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:39:09,892 INFO L85 PathProgramCache]: Analyzing trace with hash -228497231, now seen corresponding path program 1 times [2024-06-20 16:39:09,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:39:09,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020350988] [2024-06-20 16:39:09,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:39:09,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:39:09,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:39:11,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:39:11,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:39:11,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020350988] [2024-06-20 16:39:11,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020350988] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:39:11,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:39:11,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:39:11,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248598990] [2024-06-20 16:39:11,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:39:11,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:39:11,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:39:11,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:39:11,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:39:11,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:39:11,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 92 transitions, 734 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:11,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:39:11,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:39:11,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:39:12,285 INFO L124 PetriNetUnfolderBase]: 237/443 cut-off events. [2024-06-20 16:39:12,286 INFO L125 PetriNetUnfolderBase]: For 9935/9935 co-relation queries the response was YES. [2024-06-20 16:39:12,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2712 conditions, 443 events. 237/443 cut-off events. For 9935/9935 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1797 event pairs, 36 based on Foata normal form. 1/443 useless extension candidates. Maximal degree in co-relation 2661. Up to 341 conditions per place. [2024-06-20 16:39:12,290 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 81 selfloop transitions, 26 changer transitions 0/110 dead transitions. [2024-06-20 16:39:12,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 110 transitions, 1044 flow [2024-06-20 16:39:12,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:39:12,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:39:12,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-20 16:39:12,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4050179211469534 [2024-06-20 16:39:12,291 INFO L175 Difference]: Start difference. First operand has 106 places, 92 transitions, 734 flow. Second operand 9 states and 113 transitions. [2024-06-20 16:39:12,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 110 transitions, 1044 flow [2024-06-20 16:39:12,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 110 transitions, 1012 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-20 16:39:12,303 INFO L231 Difference]: Finished difference. Result has 108 places, 94 transitions, 799 flow [2024-06-20 16:39:12,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=799, PETRI_PLACES=108, PETRI_TRANSITIONS=94} [2024-06-20 16:39:12,304 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 78 predicate places. [2024-06-20 16:39:12,304 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 94 transitions, 799 flow [2024-06-20 16:39:12,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:12,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:39:12,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:39:12,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-20 16:39:12,305 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)] === [2024-06-20 16:39:12,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:39:12,305 INFO L85 PathProgramCache]: Analyzing trace with hash 382430076, now seen corresponding path program 1 times [2024-06-20 16:39:12,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:39:12,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741558368] [2024-06-20 16:39:12,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:39:12,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:39:12,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:39:13,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:39:13,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:39:13,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741558368] [2024-06-20 16:39:13,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741558368] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:39:13,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:39:13,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:39:13,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342718765] [2024-06-20 16:39:13,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:39:13,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:39:13,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:39:13,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:39:13,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:39:13,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:39:13,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 94 transitions, 799 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:13,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:39:13,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:39:13,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:39:13,640 INFO L124 PetriNetUnfolderBase]: 249/463 cut-off events. [2024-06-20 16:39:13,640 INFO L125 PetriNetUnfolderBase]: For 11983/11983 co-relation queries the response was YES. [2024-06-20 16:39:13,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2916 conditions, 463 events. 249/463 cut-off events. For 11983/11983 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1883 event pairs, 35 based on Foata normal form. 4/466 useless extension candidates. Maximal degree in co-relation 2864. Up to 373 conditions per place. [2024-06-20 16:39:13,644 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 86 selfloop transitions, 24 changer transitions 0/113 dead transitions. [2024-06-20 16:39:13,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 113 transitions, 1127 flow [2024-06-20 16:39:13,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:39:13,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:39:13,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-20 16:39:13,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40860215053763443 [2024-06-20 16:39:13,645 INFO L175 Difference]: Start difference. First operand has 108 places, 94 transitions, 799 flow. Second operand 9 states and 114 transitions. [2024-06-20 16:39:13,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 113 transitions, 1127 flow [2024-06-20 16:39:13,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 113 transitions, 1046 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-20 16:39:13,658 INFO L231 Difference]: Finished difference. Result has 110 places, 97 transitions, 820 flow [2024-06-20 16:39:13,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=718, PETRI_DIFFERENCE_MINUEND_PLACES=101, 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=820, PETRI_PLACES=110, PETRI_TRANSITIONS=97} [2024-06-20 16:39:13,659 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 80 predicate places. [2024-06-20 16:39:13,659 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 97 transitions, 820 flow [2024-06-20 16:39:13,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:13,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:39:13,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:39:13,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-20 16:39:13,660 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)] === [2024-06-20 16:39:13,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:39:13,660 INFO L85 PathProgramCache]: Analyzing trace with hash -84606701, now seen corresponding path program 2 times [2024-06-20 16:39:13,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:39:13,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471228336] [2024-06-20 16:39:13,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:39:13,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:39:13,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:39:15,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:39:15,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:39:15,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471228336] [2024-06-20 16:39:15,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471228336] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:39:15,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:39:15,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:39:15,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610835925] [2024-06-20 16:39:15,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:39:15,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:39:15,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:39:15,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:39:15,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:39:15,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:39:15,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 97 transitions, 820 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:15,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:39:15,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:39:15,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:39:15,905 INFO L124 PetriNetUnfolderBase]: 252/470 cut-off events. [2024-06-20 16:39:15,906 INFO L125 PetriNetUnfolderBase]: For 11777/11777 co-relation queries the response was YES. [2024-06-20 16:39:15,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3027 conditions, 470 events. 252/470 cut-off events. For 11777/11777 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1937 event pairs, 37 based on Foata normal form. 1/470 useless extension candidates. Maximal degree in co-relation 2974. Up to 380 conditions per place. [2024-06-20 16:39:15,908 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 84 selfloop transitions, 25 changer transitions 0/112 dead transitions. [2024-06-20 16:39:15,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 112 transitions, 1144 flow [2024-06-20 16:39:15,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:39:15,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:39:15,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-20 16:39:15,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4014336917562724 [2024-06-20 16:39:15,911 INFO L175 Difference]: Start difference. First operand has 110 places, 97 transitions, 820 flow. Second operand 9 states and 112 transitions. [2024-06-20 16:39:15,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 112 transitions, 1144 flow [2024-06-20 16:39:15,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 112 transitions, 1057 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-20 16:39:15,926 INFO L231 Difference]: Finished difference. Result has 112 places, 99 transitions, 834 flow [2024-06-20 16:39:15,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=733, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=834, PETRI_PLACES=112, PETRI_TRANSITIONS=99} [2024-06-20 16:39:15,926 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 82 predicate places. [2024-06-20 16:39:15,926 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 99 transitions, 834 flow [2024-06-20 16:39:15,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:15,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:39:15,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:39:15,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-20 16:39:15,927 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)] === [2024-06-20 16:39:15,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:39:15,927 INFO L85 PathProgramCache]: Analyzing trace with hash -84606484, now seen corresponding path program 2 times [2024-06-20 16:39:15,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:39:15,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211547467] [2024-06-20 16:39:15,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:39:15,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:39:15,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:39:16,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:39:16,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:39:16,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211547467] [2024-06-20 16:39:16,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211547467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:39:16,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:39:16,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:39:16,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550247763] [2024-06-20 16:39:16,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:39:16,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:39:16,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:39:16,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:39:16,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:39:17,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:39:17,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 99 transitions, 834 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:17,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:39:17,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:39:17,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:39:17,308 INFO L124 PetriNetUnfolderBase]: 264/490 cut-off events. [2024-06-20 16:39:17,309 INFO L125 PetriNetUnfolderBase]: For 13957/13957 co-relation queries the response was YES. [2024-06-20 16:39:17,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3144 conditions, 490 events. 264/490 cut-off events. For 13957/13957 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2035 event pairs, 37 based on Foata normal form. 4/493 useless extension candidates. Maximal degree in co-relation 3090. Up to 391 conditions per place. [2024-06-20 16:39:17,313 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 87 selfloop transitions, 26 changer transitions 0/116 dead transitions. [2024-06-20 16:39:17,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 116 transitions, 1184 flow [2024-06-20 16:39:17,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:39:17,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:39:17,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-20 16:39:17,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40860215053763443 [2024-06-20 16:39:17,315 INFO L175 Difference]: Start difference. First operand has 112 places, 99 transitions, 834 flow. Second operand 9 states and 114 transitions. [2024-06-20 16:39:17,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 116 transitions, 1184 flow [2024-06-20 16:39:17,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 116 transitions, 1099 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-20 16:39:17,336 INFO L231 Difference]: Finished difference. Result has 114 places, 102 transitions, 863 flow [2024-06-20 16:39:17,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=749, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=863, PETRI_PLACES=114, PETRI_TRANSITIONS=102} [2024-06-20 16:39:17,336 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 84 predicate places. [2024-06-20 16:39:17,336 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 102 transitions, 863 flow [2024-06-20 16:39:17,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:17,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:39:17,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:39:17,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-20 16:39:17,337 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)] === [2024-06-20 16:39:17,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:39:17,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1786014452, now seen corresponding path program 3 times [2024-06-20 16:39:17,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:39:17,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224458348] [2024-06-20 16:39:17,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:39:17,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:39:17,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:39:18,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:39:18,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:39:18,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224458348] [2024-06-20 16:39:18,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224458348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:39:18,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:39:18,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:39:18,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330501284] [2024-06-20 16:39:18,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:39:18,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:39:18,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:39:18,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:39:18,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:39:18,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:39:18,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 102 transitions, 863 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:18,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:39:18,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:39:18,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:39:18,813 INFO L124 PetriNetUnfolderBase]: 286/526 cut-off events. [2024-06-20 16:39:18,813 INFO L125 PetriNetUnfolderBase]: For 15840/15840 co-relation queries the response was YES. [2024-06-20 16:39:18,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3553 conditions, 526 events. 286/526 cut-off events. For 15840/15840 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2219 event pairs, 36 based on Foata normal form. 2/527 useless extension candidates. Maximal degree in co-relation 3498. Up to 374 conditions per place. [2024-06-20 16:39:18,817 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 79 selfloop transitions, 40 changer transitions 0/122 dead transitions. [2024-06-20 16:39:18,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 122 transitions, 1315 flow [2024-06-20 16:39:18,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:39:18,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:39:18,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-20 16:39:18,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-20 16:39:18,818 INFO L175 Difference]: Start difference. First operand has 114 places, 102 transitions, 863 flow. Second operand 9 states and 117 transitions. [2024-06-20 16:39:18,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 122 transitions, 1315 flow [2024-06-20 16:39:18,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 122 transitions, 1223 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-20 16:39:18,833 INFO L231 Difference]: Finished difference. Result has 117 places, 107 transitions, 961 flow [2024-06-20 16:39:18,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=771, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=961, PETRI_PLACES=117, PETRI_TRANSITIONS=107} [2024-06-20 16:39:18,833 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 87 predicate places. [2024-06-20 16:39:18,834 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 107 transitions, 961 flow [2024-06-20 16:39:18,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:18,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:39:18,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:39:18,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-20 16:39:18,835 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)] === [2024-06-20 16:39:18,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:39:18,835 INFO L85 PathProgramCache]: Analyzing trace with hash -84396955, now seen corresponding path program 1 times [2024-06-20 16:39:18,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:39:18,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694127770] [2024-06-20 16:39:18,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:39:18,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:39:18,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:39:19,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:39:19,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:39:19,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694127770] [2024-06-20 16:39:19,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694127770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:39:19,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:39:19,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:39:19,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136428349] [2024-06-20 16:39:19,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:39:19,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:39:19,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:39:19,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:39:19,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:39:19,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:39:19,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 107 transitions, 961 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) [2024-06-20 16:39:19,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:39:19,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:39:19,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:39:20,167 INFO L124 PetriNetUnfolderBase]: 283/521 cut-off events. [2024-06-20 16:39:20,167 INFO L125 PetriNetUnfolderBase]: For 15731/15731 co-relation queries the response was YES. [2024-06-20 16:39:20,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3583 conditions, 521 events. 283/521 cut-off events. For 15731/15731 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2195 event pairs, 35 based on Foata normal form. 1/521 useless extension candidates. Maximal degree in co-relation 3526. Up to 467 conditions per place. [2024-06-20 16:39:20,171 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 101 selfloop transitions, 15 changer transitions 0/119 dead transitions. [2024-06-20 16:39:20,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 119 transitions, 1238 flow [2024-06-20 16:39:20,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:39:20,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:39:20,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-20 16:39:20,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3951612903225806 [2024-06-20 16:39:20,172 INFO L175 Difference]: Start difference. First operand has 117 places, 107 transitions, 961 flow. Second operand 8 states and 98 transitions. [2024-06-20 16:39:20,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 119 transitions, 1238 flow [2024-06-20 16:39:20,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 119 transitions, 1169 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-20 16:39:20,191 INFO L231 Difference]: Finished difference. Result has 120 places, 108 transitions, 943 flow [2024-06-20 16:39:20,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=892, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=943, PETRI_PLACES=120, PETRI_TRANSITIONS=108} [2024-06-20 16:39:20,192 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 90 predicate places. [2024-06-20 16:39:20,192 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 108 transitions, 943 flow [2024-06-20 16:39:20,192 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) [2024-06-20 16:39:20,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:39:20,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:39:20,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-20 16:39:20,193 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)] === [2024-06-20 16:39:20,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:39:20,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1786007012, now seen corresponding path program 4 times [2024-06-20 16:39:20,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:39:20,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343667521] [2024-06-20 16:39:20,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:39:20,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:39:20,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:39:21,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:39:21,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:39:21,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343667521] [2024-06-20 16:39:21,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343667521] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:39:21,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:39:21,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:39:21,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496121813] [2024-06-20 16:39:21,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:39:21,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:39:21,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:39:21,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:39:21,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:39:21,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:39:21,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 108 transitions, 943 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:21,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:39:21,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:39:21,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:39:21,502 INFO L124 PetriNetUnfolderBase]: 279/515 cut-off events. [2024-06-20 16:39:21,502 INFO L125 PetriNetUnfolderBase]: For 15702/15702 co-relation queries the response was YES. [2024-06-20 16:39:21,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3461 conditions, 515 events. 279/515 cut-off events. For 15702/15702 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2169 event pairs, 36 based on Foata normal form. 2/516 useless extension candidates. Maximal degree in co-relation 3402. Up to 368 conditions per place. [2024-06-20 16:39:21,505 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 81 selfloop transitions, 39 changer transitions 0/123 dead transitions. [2024-06-20 16:39:21,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 123 transitions, 1265 flow [2024-06-20 16:39:21,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:39:21,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:39:21,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-20 16:39:21,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-20 16:39:21,519 INFO L175 Difference]: Start difference. First operand has 120 places, 108 transitions, 943 flow. Second operand 9 states and 117 transitions. [2024-06-20 16:39:21,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 123 transitions, 1265 flow [2024-06-20 16:39:21,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 123 transitions, 1199 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-20 16:39:21,547 INFO L231 Difference]: Finished difference. Result has 123 places, 108 transitions, 960 flow [2024-06-20 16:39:21,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=877, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=960, PETRI_PLACES=123, PETRI_TRANSITIONS=108} [2024-06-20 16:39:21,547 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 93 predicate places. [2024-06-20 16:39:21,547 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 108 transitions, 960 flow [2024-06-20 16:39:21,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:21,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:39:21,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:39:21,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-20 16:39:21,549 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)] === [2024-06-20 16:39:21,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:39:21,549 INFO L85 PathProgramCache]: Analyzing trace with hash -84404891, now seen corresponding path program 3 times [2024-06-20 16:39:21,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:39:21,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043928126] [2024-06-20 16:39:21,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:39:21,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:39:21,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:39:22,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:39:22,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:39:22,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043928126] [2024-06-20 16:39:22,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043928126] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:39:22,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:39:22,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:39:22,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113807446] [2024-06-20 16:39:22,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:39:22,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:39:22,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:39:22,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:39:22,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:39:22,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:39:22,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 108 transitions, 960 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:22,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:39:22,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:39:22,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:39:23,262 INFO L124 PetriNetUnfolderBase]: 282/522 cut-off events. [2024-06-20 16:39:23,262 INFO L125 PetriNetUnfolderBase]: For 16280/16280 co-relation queries the response was YES. [2024-06-20 16:39:23,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3571 conditions, 522 events. 282/522 cut-off events. For 16280/16280 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2209 event pairs, 36 based on Foata normal form. 1/522 useless extension candidates. Maximal degree in co-relation 3511. Up to 408 conditions per place. [2024-06-20 16:39:23,265 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 86 selfloop transitions, 33 changer transitions 0/122 dead transitions. [2024-06-20 16:39:23,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 122 transitions, 1298 flow [2024-06-20 16:39:23,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:39:23,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:39:23,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-20 16:39:23,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4014336917562724 [2024-06-20 16:39:23,267 INFO L175 Difference]: Start difference. First operand has 123 places, 108 transitions, 960 flow. Second operand 9 states and 112 transitions. [2024-06-20 16:39:23,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 122 transitions, 1298 flow [2024-06-20 16:39:23,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 122 transitions, 1198 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-20 16:39:23,288 INFO L231 Difference]: Finished difference. Result has 124 places, 110 transitions, 983 flow [2024-06-20 16:39:23,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=860, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=983, PETRI_PLACES=124, PETRI_TRANSITIONS=110} [2024-06-20 16:39:23,289 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 94 predicate places. [2024-06-20 16:39:23,289 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 110 transitions, 983 flow [2024-06-20 16:39:23,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:23,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:39:23,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:39:23,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-20 16:39:23,290 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)] === [2024-06-20 16:39:23,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:39:23,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1137206703, now seen corresponding path program 4 times [2024-06-20 16:39:23,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:39:23,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783118702] [2024-06-20 16:39:23,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:39:23,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:39:23,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:39:24,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:39:24,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:39:24,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783118702] [2024-06-20 16:39:24,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783118702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:39:24,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:39:24,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:39:24,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750189286] [2024-06-20 16:39:24,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:39:24,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:39:24,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:39:24,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:39:24,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:39:24,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:39:24,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 110 transitions, 983 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:24,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:39:24,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:39:24,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:39:25,003 INFO L124 PetriNetUnfolderBase]: 285/528 cut-off events. [2024-06-20 16:39:25,003 INFO L125 PetriNetUnfolderBase]: For 17451/17453 co-relation queries the response was YES. [2024-06-20 16:39:25,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3635 conditions, 528 events. 285/528 cut-off events. For 17451/17453 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2283 event pairs, 46 based on Foata normal form. 1/527 useless extension candidates. Maximal degree in co-relation 3574. Up to 405 conditions per place. [2024-06-20 16:39:25,007 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 90 selfloop transitions, 30 changer transitions 0/123 dead transitions. [2024-06-20 16:39:25,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 123 transitions, 1345 flow [2024-06-20 16:39:25,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:39:25,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:39:25,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-20 16:39:25,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4014336917562724 [2024-06-20 16:39:25,008 INFO L175 Difference]: Start difference. First operand has 124 places, 110 transitions, 983 flow. Second operand 9 states and 112 transitions. [2024-06-20 16:39:25,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 123 transitions, 1345 flow [2024-06-20 16:39:25,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 123 transitions, 1238 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-20 16:39:25,030 INFO L231 Difference]: Finished difference. Result has 126 places, 112 transitions, 997 flow [2024-06-20 16:39:25,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=876, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=997, PETRI_PLACES=126, PETRI_TRANSITIONS=112} [2024-06-20 16:39:25,030 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 96 predicate places. [2024-06-20 16:39:25,031 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 112 transitions, 997 flow [2024-06-20 16:39:25,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:25,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:39:25,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:39:25,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-20 16:39:25,031 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)] === [2024-06-20 16:39:25,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:39:25,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1137206486, now seen corresponding path program 5 times [2024-06-20 16:39:25,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:39:25,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226740530] [2024-06-20 16:39:25,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:39:25,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:39:25,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:39:25,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:39:25,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:39:25,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226740530] [2024-06-20 16:39:25,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226740530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:39:25,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:39:25,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:39:25,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840529619] [2024-06-20 16:39:25,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:39:25,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:39:25,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:39:25,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:39:25,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:39:26,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:39:26,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 112 transitions, 997 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:26,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:39:26,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:39:26,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:39:26,196 INFO L124 PetriNetUnfolderBase]: 297/550 cut-off events. [2024-06-20 16:39:26,197 INFO L125 PetriNetUnfolderBase]: For 20623/20625 co-relation queries the response was YES. [2024-06-20 16:39:26,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3813 conditions, 550 events. 297/550 cut-off events. For 20623/20625 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2385 event pairs, 42 based on Foata normal form. 4/553 useless extension candidates. Maximal degree in co-relation 3751. Up to 434 conditions per place. [2024-06-20 16:39:26,200 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 94 selfloop transitions, 30 changer transitions 0/127 dead transitions. [2024-06-20 16:39:26,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 127 transitions, 1391 flow [2024-06-20 16:39:26,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:39:26,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:39:26,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-20 16:39:26,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4050179211469534 [2024-06-20 16:39:26,202 INFO L175 Difference]: Start difference. First operand has 126 places, 112 transitions, 997 flow. Second operand 9 states and 113 transitions. [2024-06-20 16:39:26,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 127 transitions, 1391 flow [2024-06-20 16:39:26,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 127 transitions, 1286 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-20 16:39:26,234 INFO L231 Difference]: Finished difference. Result has 128 places, 115 transitions, 1030 flow [2024-06-20 16:39:26,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=892, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1030, PETRI_PLACES=128, PETRI_TRANSITIONS=115} [2024-06-20 16:39:26,235 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 98 predicate places. [2024-06-20 16:39:26,235 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 115 transitions, 1030 flow [2024-06-20 16:39:26,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:26,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:39:26,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:39:26,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-20 16:39:26,236 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)] === [2024-06-20 16:39:26,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:39:26,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1137004893, now seen corresponding path program 5 times [2024-06-20 16:39:26,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:39:26,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212333371] [2024-06-20 16:39:26,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:39:26,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:39:26,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:39:27,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:39:27,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:39:27,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212333371] [2024-06-20 16:39:27,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212333371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:39:27,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:39:27,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:39:27,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398795756] [2024-06-20 16:39:27,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:39:27,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:39:27,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:39:27,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:39:27,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:39:27,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:39:27,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 115 transitions, 1030 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:27,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:39:27,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:39:27,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:39:27,939 INFO L124 PetriNetUnfolderBase]: 300/557 cut-off events. [2024-06-20 16:39:27,939 INFO L125 PetriNetUnfolderBase]: For 20098/20100 co-relation queries the response was YES. [2024-06-20 16:39:27,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3928 conditions, 557 events. 300/557 cut-off events. For 20098/20100 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2438 event pairs, 42 based on Foata normal form. 1/557 useless extension candidates. Maximal degree in co-relation 3865. Up to 439 conditions per place. [2024-06-20 16:39:27,943 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 92 selfloop transitions, 33 changer transitions 0/128 dead transitions. [2024-06-20 16:39:27,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 128 transitions, 1412 flow [2024-06-20 16:39:27,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:39:27,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:39:27,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-20 16:39:27,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4050179211469534 [2024-06-20 16:39:27,945 INFO L175 Difference]: Start difference. First operand has 128 places, 115 transitions, 1030 flow. Second operand 9 states and 113 transitions. [2024-06-20 16:39:27,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 128 transitions, 1412 flow [2024-06-20 16:39:27,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 128 transitions, 1296 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-20 16:39:27,981 INFO L231 Difference]: Finished difference. Result has 130 places, 117 transitions, 1047 flow [2024-06-20 16:39:27,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=914, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1047, PETRI_PLACES=130, PETRI_TRANSITIONS=117} [2024-06-20 16:39:27,982 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 100 predicate places. [2024-06-20 16:39:27,982 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 117 transitions, 1047 flow [2024-06-20 16:39:27,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:27,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:39:27,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:39:27,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-20 16:39:27,983 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)] === [2024-06-20 16:39:27,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:39:27,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1653407420, now seen corresponding path program 6 times [2024-06-20 16:39:27,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:39:27,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551224926] [2024-06-20 16:39:27,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:39:27,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:39:27,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:39:29,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:39:29,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:39:29,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551224926] [2024-06-20 16:39:29,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551224926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:39:29,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:39:29,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:39:29,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265937094] [2024-06-20 16:39:29,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:39:29,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:39:29,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:39:29,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:39:29,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:39:29,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:39:29,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 117 transitions, 1047 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:29,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:39:29,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:39:29,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:39:29,402 INFO L124 PetriNetUnfolderBase]: 308/570 cut-off events. [2024-06-20 16:39:29,402 INFO L125 PetriNetUnfolderBase]: For 21131/21133 co-relation queries the response was YES. [2024-06-20 16:39:29,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4009 conditions, 570 events. 308/570 cut-off events. For 21131/21133 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2514 event pairs, 42 based on Foata normal form. 1/570 useless extension candidates. Maximal degree in co-relation 3945. Up to 442 conditions per place. [2024-06-20 16:39:29,406 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 96 selfloop transitions, 37 changer transitions 0/136 dead transitions. [2024-06-20 16:39:29,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 136 transitions, 1555 flow [2024-06-20 16:39:29,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:39:29,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:39:29,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-20 16:39:29,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4157706093189964 [2024-06-20 16:39:29,409 INFO L175 Difference]: Start difference. First operand has 130 places, 117 transitions, 1047 flow. Second operand 9 states and 116 transitions. [2024-06-20 16:39:29,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 136 transitions, 1555 flow [2024-06-20 16:39:29,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 136 transitions, 1438 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-20 16:39:29,451 INFO L231 Difference]: Finished difference. Result has 134 places, 124 transitions, 1125 flow [2024-06-20 16:39:29,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=930, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1125, PETRI_PLACES=134, PETRI_TRANSITIONS=124} [2024-06-20 16:39:29,452 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 104 predicate places. [2024-06-20 16:39:29,452 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 124 transitions, 1125 flow [2024-06-20 16:39:29,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:29,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:39:29,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:39:29,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-20 16:39:29,453 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)] === [2024-06-20 16:39:29,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:39:29,453 INFO L85 PathProgramCache]: Analyzing trace with hash -880496447, now seen corresponding path program 2 times [2024-06-20 16:39:29,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:39:29,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983804028] [2024-06-20 16:39:29,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:39:29,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:39:29,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:39:30,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:39:30,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:39:30,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983804028] [2024-06-20 16:39:30,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983804028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:39:30,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:39:30,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:39:30,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304786020] [2024-06-20 16:39:30,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:39:30,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:39:30,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:39:30,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:39:30,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:39:30,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:39:30,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 124 transitions, 1125 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:30,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:39:30,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:39:30,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:39:30,967 INFO L124 PetriNetUnfolderBase]: 311/575 cut-off events. [2024-06-20 16:39:30,967 INFO L125 PetriNetUnfolderBase]: For 22586/22588 co-relation queries the response was YES. [2024-06-20 16:39:30,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4139 conditions, 575 events. 311/575 cut-off events. For 22586/22588 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2546 event pairs, 36 based on Foata normal form. 3/577 useless extension candidates. Maximal degree in co-relation 4072. Up to 472 conditions per place. [2024-06-20 16:39:30,972 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 103 selfloop transitions, 32 changer transitions 0/138 dead transitions. [2024-06-20 16:39:30,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 138 transitions, 1577 flow [2024-06-20 16:39:30,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:39:30,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:39:30,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-20 16:39:30,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4153225806451613 [2024-06-20 16:39:30,974 INFO L175 Difference]: Start difference. First operand has 134 places, 124 transitions, 1125 flow. Second operand 8 states and 103 transitions. [2024-06-20 16:39:30,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 138 transitions, 1577 flow [2024-06-20 16:39:31,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 138 transitions, 1494 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-20 16:39:31,015 INFO L231 Difference]: Finished difference. Result has 138 places, 128 transitions, 1192 flow [2024-06-20 16:39:31,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1042, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1192, PETRI_PLACES=138, PETRI_TRANSITIONS=128} [2024-06-20 16:39:31,015 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 108 predicate places. [2024-06-20 16:39:31,015 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 128 transitions, 1192 flow [2024-06-20 16:39:31,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:31,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:39:31,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:39:31,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-20 16:39:31,016 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)] === [2024-06-20 16:39:31,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:39:31,017 INFO L85 PathProgramCache]: Analyzing trace with hash -880496726, now seen corresponding path program 7 times [2024-06-20 16:39:31,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:39:31,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121894279] [2024-06-20 16:39:31,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:39:31,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:39:31,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:39:32,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:39:32,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:39:32,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121894279] [2024-06-20 16:39:32,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121894279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:39:32,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:39:32,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:39:32,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463228554] [2024-06-20 16:39:32,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:39:32,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:39:32,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:39:32,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:39:32,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:39:32,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:39:32,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 128 transitions, 1192 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:32,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:39:32,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:39:32,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:39:32,315 INFO L124 PetriNetUnfolderBase]: 332/609 cut-off events. [2024-06-20 16:39:32,315 INFO L125 PetriNetUnfolderBase]: For 27147/27149 co-relation queries the response was YES. [2024-06-20 16:39:32,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4631 conditions, 609 events. 332/609 cut-off events. For 27147/27149 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2721 event pairs, 44 based on Foata normal form. 2/610 useless extension candidates. Maximal degree in co-relation 4562. Up to 338 conditions per place. [2024-06-20 16:39:32,320 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 82 selfloop transitions, 68 changer transitions 0/153 dead transitions. [2024-06-20 16:39:32,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 153 transitions, 2022 flow [2024-06-20 16:39:32,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:39:32,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:39:32,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 123 transitions. [2024-06-20 16:39:32,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44086021505376344 [2024-06-20 16:39:32,325 INFO L175 Difference]: Start difference. First operand has 138 places, 128 transitions, 1192 flow. Second operand 9 states and 123 transitions. [2024-06-20 16:39:32,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 153 transitions, 2022 flow [2024-06-20 16:39:32,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 153 transitions, 1953 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-20 16:39:32,369 INFO L231 Difference]: Finished difference. Result has 143 places, 137 transitions, 1485 flow [2024-06-20 16:39:32,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1123, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1485, PETRI_PLACES=143, PETRI_TRANSITIONS=137} [2024-06-20 16:39:32,369 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 113 predicate places. [2024-06-20 16:39:32,369 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 137 transitions, 1485 flow [2024-06-20 16:39:32,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:32,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:39:32,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:39:32,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-20 16:39:32,370 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)] === [2024-06-20 16:39:32,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:39:32,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1136997236, now seen corresponding path program 8 times [2024-06-20 16:39:32,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:39:32,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611729401] [2024-06-20 16:39:32,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:39:32,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:39:32,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:39:33,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:39:33,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:39:33,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611729401] [2024-06-20 16:39:33,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611729401] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:39:33,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:39:33,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:39:33,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370161560] [2024-06-20 16:39:33,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:39:33,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:39:33,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:39:33,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:39:33,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:39:33,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:39:33,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 137 transitions, 1485 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:33,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:39:33,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:39:33,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:39:33,851 INFO L124 PetriNetUnfolderBase]: 330/606 cut-off events. [2024-06-20 16:39:33,851 INFO L125 PetriNetUnfolderBase]: For 27419/27421 co-relation queries the response was YES. [2024-06-20 16:39:33,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4753 conditions, 606 events. 330/606 cut-off events. For 27419/27421 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2718 event pairs, 43 based on Foata normal form. 1/606 useless extension candidates. Maximal degree in co-relation 4682. Up to 479 conditions per place. [2024-06-20 16:39:33,856 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 106 selfloop transitions, 38 changer transitions 0/147 dead transitions. [2024-06-20 16:39:33,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 147 transitions, 1827 flow [2024-06-20 16:39:33,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:39:33,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:39:33,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-20 16:39:33,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121863799283154 [2024-06-20 16:39:33,857 INFO L175 Difference]: Start difference. First operand has 143 places, 137 transitions, 1485 flow. Second operand 9 states and 115 transitions. [2024-06-20 16:39:33,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 147 transitions, 1827 flow [2024-06-20 16:39:33,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 147 transitions, 1659 flow, removed 74 selfloop flow, removed 3 redundant places. [2024-06-20 16:39:33,894 INFO L231 Difference]: Finished difference. Result has 149 places, 137 transitions, 1426 flow [2024-06-20 16:39:33,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1345, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1426, PETRI_PLACES=149, PETRI_TRANSITIONS=137} [2024-06-20 16:39:33,895 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 119 predicate places. [2024-06-20 16:39:33,895 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 137 transitions, 1426 flow [2024-06-20 16:39:33,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:33,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:39:33,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:39:33,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-20 16:39:33,896 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)] === [2024-06-20 16:39:33,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:39:33,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1645990391, now seen corresponding path program 3 times [2024-06-20 16:39:33,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:39:33,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612351989] [2024-06-20 16:39:33,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:39:33,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:39:33,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:39:35,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:39:35,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:39:35,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612351989] [2024-06-20 16:39:35,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612351989] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:39:35,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:39:35,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:39:35,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708136018] [2024-06-20 16:39:35,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:39:35,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:39:35,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:39:35,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:39:35,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:39:35,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:39:35,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 137 transitions, 1426 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:35,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:39:35,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:39:35,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:39:35,561 INFO L124 PetriNetUnfolderBase]: 333/610 cut-off events. [2024-06-20 16:39:35,562 INFO L125 PetriNetUnfolderBase]: For 26713/26713 co-relation queries the response was YES. [2024-06-20 16:39:35,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4620 conditions, 610 events. 333/610 cut-off events. For 26713/26713 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2725 event pairs, 38 based on Foata normal form. 1/610 useless extension candidates. Maximal degree in co-relation 4548. Up to 560 conditions per place. [2024-06-20 16:39:35,566 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 131 selfloop transitions, 14 changer transitions 0/148 dead transitions. [2024-06-20 16:39:35,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 148 transitions, 1778 flow [2024-06-20 16:39:35,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:39:35,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:39:35,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-20 16:39:35,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3727598566308244 [2024-06-20 16:39:35,567 INFO L175 Difference]: Start difference. First operand has 149 places, 137 transitions, 1426 flow. Second operand 9 states and 104 transitions. [2024-06-20 16:39:35,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 148 transitions, 1778 flow [2024-06-20 16:39:35,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 148 transitions, 1707 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-20 16:39:35,601 INFO L231 Difference]: Finished difference. Result has 151 places, 139 transitions, 1432 flow [2024-06-20 16:39:35,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1355, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1432, PETRI_PLACES=151, PETRI_TRANSITIONS=139} [2024-06-20 16:39:35,601 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 121 predicate places. [2024-06-20 16:39:35,601 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 139 transitions, 1432 flow [2024-06-20 16:39:35,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:35,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:39:35,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:39:35,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-20 16:39:35,602 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)] === [2024-06-20 16:39:35,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:39:35,603 INFO L85 PathProgramCache]: Analyzing trace with hash -871299956, now seen corresponding path program 9 times [2024-06-20 16:39:35,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:39:35,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944980685] [2024-06-20 16:39:35,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:39:35,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:39:35,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:39:36,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:39:36,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:39:36,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944980685] [2024-06-20 16:39:36,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944980685] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:39:36,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:39:36,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:39:36,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112557518] [2024-06-20 16:39:36,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:39:36,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:39:36,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:39:36,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:39:36,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:39:36,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:39:36,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 139 transitions, 1432 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:36,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:39:36,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:39:36,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:39:36,984 INFO L124 PetriNetUnfolderBase]: 331/607 cut-off events. [2024-06-20 16:39:36,984 INFO L125 PetriNetUnfolderBase]: For 27126/27126 co-relation queries the response was YES. [2024-06-20 16:39:36,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4535 conditions, 607 events. 331/607 cut-off events. For 27126/27126 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2701 event pairs, 38 based on Foata normal form. 1/607 useless extension candidates. Maximal degree in co-relation 4462. Up to 557 conditions per place. [2024-06-20 16:39:36,988 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 133 selfloop transitions, 14 changer transitions 0/150 dead transitions. [2024-06-20 16:39:36,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 150 transitions, 1784 flow [2024-06-20 16:39:36,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:39:36,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:39:36,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-20 16:39:36,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3727598566308244 [2024-06-20 16:39:36,990 INFO L175 Difference]: Start difference. First operand has 151 places, 139 transitions, 1432 flow. Second operand 9 states and 104 transitions. [2024-06-20 16:39:36,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 150 transitions, 1784 flow [2024-06-20 16:39:37,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 150 transitions, 1729 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-20 16:39:37,024 INFO L231 Difference]: Finished difference. Result has 153 places, 141 transitions, 1450 flow [2024-06-20 16:39:37,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1377, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1450, PETRI_PLACES=153, PETRI_TRANSITIONS=141} [2024-06-20 16:39:37,024 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 123 predicate places. [2024-06-20 16:39:37,024 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 141 transitions, 1450 flow [2024-06-20 16:39:37,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:37,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:39:37,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:39:37,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-20 16:39:37,025 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)] === [2024-06-20 16:39:37,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:39:37,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1226999550, now seen corresponding path program 10 times [2024-06-20 16:39:37,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:39:37,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560144980] [2024-06-20 16:39:37,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:39:37,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:39:37,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:39:37,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:39:37,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:39:37,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560144980] [2024-06-20 16:39:37,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560144980] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:39:37,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:39:37,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:39:37,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883740428] [2024-06-20 16:39:37,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:39:37,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:39:37,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:39:37,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:39:37,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:39:38,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:39:38,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 141 transitions, 1450 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:38,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:39:38,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:39:38,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:39:38,255 INFO L124 PetriNetUnfolderBase]: 327/602 cut-off events. [2024-06-20 16:39:38,255 INFO L125 PetriNetUnfolderBase]: For 27063/27065 co-relation queries the response was YES. [2024-06-20 16:39:38,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4433 conditions, 602 events. 327/602 cut-off events. For 27063/27065 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2685 event pairs, 41 based on Foata normal form. 2/603 useless extension candidates. Maximal degree in co-relation 4359. Up to 335 conditions per place. [2024-06-20 16:39:38,259 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 80 selfloop transitions, 73 changer transitions 0/156 dead transitions. [2024-06-20 16:39:38,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 156 transitions, 2090 flow [2024-06-20 16:39:38,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:39:38,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:39:38,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2024-06-20 16:39:38,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43727598566308246 [2024-06-20 16:39:38,261 INFO L175 Difference]: Start difference. First operand has 153 places, 141 transitions, 1450 flow. Second operand 9 states and 122 transitions. [2024-06-20 16:39:38,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 156 transitions, 2090 flow [2024-06-20 16:39:38,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 156 transitions, 2005 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-20 16:39:38,299 INFO L231 Difference]: Finished difference. Result has 155 places, 141 transitions, 1516 flow [2024-06-20 16:39:38,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1365, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1516, PETRI_PLACES=155, PETRI_TRANSITIONS=141} [2024-06-20 16:39:38,300 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 125 predicate places. [2024-06-20 16:39:38,300 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 141 transitions, 1516 flow [2024-06-20 16:39:38,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:38,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:39:38,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:39:38,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-20 16:39:38,301 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)] === [2024-06-20 16:39:38,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:39:38,302 INFO L85 PathProgramCache]: Analyzing trace with hash -880504383, now seen corresponding path program 6 times [2024-06-20 16:39:38,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:39:38,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528731234] [2024-06-20 16:39:38,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:39:38,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:39:38,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:39:39,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:39:39,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:39:39,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528731234] [2024-06-20 16:39:39,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528731234] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:39:39,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:39:39,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:39:39,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765578448] [2024-06-20 16:39:39,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:39:39,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:39:39,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:39:39,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:39:39,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:39:39,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:39:39,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 141 transitions, 1516 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:39,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:39:39,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:39:39,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:39:39,973 INFO L124 PetriNetUnfolderBase]: 325/599 cut-off events. [2024-06-20 16:39:39,973 INFO L125 PetriNetUnfolderBase]: For 26083/26085 co-relation queries the response was YES. [2024-06-20 16:39:39,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4462 conditions, 599 events. 325/599 cut-off events. For 26083/26085 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2676 event pairs, 42 based on Foata normal form. 1/599 useless extension candidates. Maximal degree in co-relation 4387. Up to 438 conditions per place. [2024-06-20 16:39:39,977 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 99 selfloop transitions, 50 changer transitions 0/152 dead transitions. [2024-06-20 16:39:39,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 152 transitions, 1898 flow [2024-06-20 16:39:39,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:39:39,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:39:39,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-20 16:39:39,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4014336917562724 [2024-06-20 16:39:39,978 INFO L175 Difference]: Start difference. First operand has 155 places, 141 transitions, 1516 flow. Second operand 9 states and 112 transitions. [2024-06-20 16:39:39,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 152 transitions, 1898 flow [2024-06-20 16:39:40,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 152 transitions, 1757 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-20 16:39:40,033 INFO L231 Difference]: Finished difference. Result has 157 places, 143 transitions, 1546 flow [2024-06-20 16:39:40,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1375, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1546, PETRI_PLACES=157, PETRI_TRANSITIONS=143} [2024-06-20 16:39:40,033 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 127 predicate places. [2024-06-20 16:39:40,033 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 143 transitions, 1546 flow [2024-06-20 16:39:40,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:40,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:39:40,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:39:40,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-20 16:39:40,034 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)] === [2024-06-20 16:39:40,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:39:40,035 INFO L85 PathProgramCache]: Analyzing trace with hash -870973247, now seen corresponding path program 4 times [2024-06-20 16:39:40,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:39:40,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026542815] [2024-06-20 16:39:40,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:39:40,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:39:40,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:39:41,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:39:41,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:39:41,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026542815] [2024-06-20 16:39:41,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026542815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:39:41,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:39:41,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:39:41,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826986475] [2024-06-20 16:39:41,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:39:41,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:39:41,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:39:41,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:39:41,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:39:42,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:39:42,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 143 transitions, 1546 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:42,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:39:42,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:39:42,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:39:42,461 INFO L124 PetriNetUnfolderBase]: 323/595 cut-off events. [2024-06-20 16:39:42,461 INFO L125 PetriNetUnfolderBase]: For 25983/25983 co-relation queries the response was YES. [2024-06-20 16:39:42,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4372 conditions, 595 events. 323/595 cut-off events. For 25983/25983 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2665 event pairs, 37 based on Foata normal form. 1/595 useless extension candidates. Maximal degree in co-relation 4296. Up to 539 conditions per place. [2024-06-20 16:39:42,466 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 132 selfloop transitions, 18 changer transitions 0/153 dead transitions. [2024-06-20 16:39:42,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 153 transitions, 1870 flow [2024-06-20 16:39:42,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:39:42,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:39:42,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-20 16:39:42,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36774193548387096 [2024-06-20 16:39:42,467 INFO L175 Difference]: Start difference. First operand has 157 places, 143 transitions, 1546 flow. Second operand 10 states and 114 transitions. [2024-06-20 16:39:42,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 153 transitions, 1870 flow [2024-06-20 16:39:42,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 153 transitions, 1689 flow, removed 42 selfloop flow, removed 7 redundant places. [2024-06-20 16:39:42,514 INFO L231 Difference]: Finished difference. Result has 160 places, 143 transitions, 1409 flow [2024-06-20 16:39:42,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1365, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1409, PETRI_PLACES=160, PETRI_TRANSITIONS=143} [2024-06-20 16:39:42,515 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 130 predicate places. [2024-06-20 16:39:42,515 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 143 transitions, 1409 flow [2024-06-20 16:39:42,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:42,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:39:42,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:39:42,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-20 16:39:42,516 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)] === [2024-06-20 16:39:42,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:39:42,516 INFO L85 PathProgramCache]: Analyzing trace with hash -758583985, now seen corresponding path program 1 times [2024-06-20 16:39:42,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:39:42,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897204495] [2024-06-20 16:39:42,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:39:42,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:39:42,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:39:43,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:39:43,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:39:43,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897204495] [2024-06-20 16:39:43,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897204495] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:39:43,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:39:43,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:39:43,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233688481] [2024-06-20 16:39:43,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:39:43,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:39:43,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:39:43,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:39:43,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:39:43,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:39:43,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 143 transitions, 1409 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:43,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:39:43,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:39:43,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:39:43,812 INFO L124 PetriNetUnfolderBase]: 336/622 cut-off events. [2024-06-20 16:39:43,812 INFO L125 PetriNetUnfolderBase]: For 27802/27802 co-relation queries the response was YES. [2024-06-20 16:39:43,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4342 conditions, 622 events. 336/622 cut-off events. For 27802/27802 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 2847 event pairs, 38 based on Foata normal form. 2/623 useless extension candidates. Maximal degree in co-relation 4265. Up to 524 conditions per place. [2024-06-20 16:39:43,819 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 143 selfloop transitions, 20 changer transitions 0/166 dead transitions. [2024-06-20 16:39:43,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 166 transitions, 1846 flow [2024-06-20 16:39:43,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:39:43,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:39:43,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-20 16:39:43,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-20 16:39:43,820 INFO L175 Difference]: Start difference. First operand has 160 places, 143 transitions, 1409 flow. Second operand 10 states and 122 transitions. [2024-06-20 16:39:43,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 166 transitions, 1846 flow [2024-06-20 16:39:43,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 166 transitions, 1798 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-20 16:39:43,874 INFO L231 Difference]: Finished difference. Result has 166 places, 152 transitions, 1511 flow [2024-06-20 16:39:43,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1363, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1511, PETRI_PLACES=166, PETRI_TRANSITIONS=152} [2024-06-20 16:39:43,874 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 136 predicate places. [2024-06-20 16:39:43,874 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 152 transitions, 1511 flow [2024-06-20 16:39:43,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:43,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:39:43,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:39:43,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-20 16:39:43,875 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)] === [2024-06-20 16:39:43,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:39:43,875 INFO L85 PathProgramCache]: Analyzing trace with hash 698882417, now seen corresponding path program 2 times [2024-06-20 16:39:43,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:39:43,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776703828] [2024-06-20 16:39:43,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:39:43,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:39:43,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:39:44,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:39:44,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:39:44,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776703828] [2024-06-20 16:39:44,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776703828] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:39:44,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:39:44,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:39:44,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754478658] [2024-06-20 16:39:44,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:39:44,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:39:44,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:39:44,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:39:44,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:39:44,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:39:44,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 152 transitions, 1511 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:44,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:39:44,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:39:44,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:39:45,192 INFO L124 PetriNetUnfolderBase]: 349/653 cut-off events. [2024-06-20 16:39:45,192 INFO L125 PetriNetUnfolderBase]: For 28785/28785 co-relation queries the response was YES. [2024-06-20 16:39:45,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4533 conditions, 653 events. 349/653 cut-off events. For 28785/28785 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3081 event pairs, 32 based on Foata normal form. 2/654 useless extension candidates. Maximal degree in co-relation 4450. Up to 548 conditions per place. [2024-06-20 16:39:45,197 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 147 selfloop transitions, 27 changer transitions 0/177 dead transitions. [2024-06-20 16:39:45,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 177 transitions, 1969 flow [2024-06-20 16:39:45,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:39:45,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:39:45,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-20 16:39:45,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-20 16:39:45,198 INFO L175 Difference]: Start difference. First operand has 166 places, 152 transitions, 1511 flow. Second operand 10 states and 125 transitions. [2024-06-20 16:39:45,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 177 transitions, 1969 flow [2024-06-20 16:39:45,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 177 transitions, 1937 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-06-20 16:39:45,250 INFO L231 Difference]: Finished difference. Result has 176 places, 157 transitions, 1605 flow [2024-06-20 16:39:45,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1481, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1605, PETRI_PLACES=176, PETRI_TRANSITIONS=157} [2024-06-20 16:39:45,251 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 146 predicate places. [2024-06-20 16:39:45,251 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 157 transitions, 1605 flow [2024-06-20 16:39:45,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:45,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:39:45,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:39:45,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-20 16:39:45,251 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)] === [2024-06-20 16:39:45,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:39:45,252 INFO L85 PathProgramCache]: Analyzing trace with hash -755727025, now seen corresponding path program 3 times [2024-06-20 16:39:45,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:39:45,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444667294] [2024-06-20 16:39:45,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:39:45,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:39:45,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:39:46,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:39:46,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:39:46,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444667294] [2024-06-20 16:39:46,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444667294] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:39:46,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:39:46,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:39:46,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784798670] [2024-06-20 16:39:46,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:39:46,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:39:46,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:39:46,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:39:46,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:39:46,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:39:46,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 157 transitions, 1605 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:46,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:39:46,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:39:46,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:39:46,558 INFO L124 PetriNetUnfolderBase]: 353/661 cut-off events. [2024-06-20 16:39:46,559 INFO L125 PetriNetUnfolderBase]: For 30226/30226 co-relation queries the response was YES. [2024-06-20 16:39:46,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4644 conditions, 661 events. 353/661 cut-off events. For 30226/30226 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3134 event pairs, 37 based on Foata normal form. 2/662 useless extension candidates. Maximal degree in co-relation 4557. Up to 561 conditions per place. [2024-06-20 16:39:46,564 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 144 selfloop transitions, 27 changer transitions 0/174 dead transitions. [2024-06-20 16:39:46,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 174 transitions, 2015 flow [2024-06-20 16:39:46,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:39:46,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:39:46,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-20 16:39:46,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4050179211469534 [2024-06-20 16:39:46,565 INFO L175 Difference]: Start difference. First operand has 176 places, 157 transitions, 1605 flow. Second operand 9 states and 113 transitions. [2024-06-20 16:39:46,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 174 transitions, 2015 flow [2024-06-20 16:39:46,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 174 transitions, 1947 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-20 16:39:46,618 INFO L231 Difference]: Finished difference. Result has 179 places, 158 transitions, 1617 flow [2024-06-20 16:39:46,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1537, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1617, PETRI_PLACES=179, PETRI_TRANSITIONS=158} [2024-06-20 16:39:46,619 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 149 predicate places. [2024-06-20 16:39:46,619 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 158 transitions, 1617 flow [2024-06-20 16:39:46,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:46,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:39:46,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:39:46,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-20 16:39:46,619 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)] === [2024-06-20 16:39:46,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:39:46,620 INFO L85 PathProgramCache]: Analyzing trace with hash -640435855, now seen corresponding path program 4 times [2024-06-20 16:39:46,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:39:46,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041207860] [2024-06-20 16:39:46,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:39:46,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:39:46,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:39:47,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:39:47,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:39:47,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041207860] [2024-06-20 16:39:47,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041207860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:39:47,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:39:47,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:39:47,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268149868] [2024-06-20 16:39:47,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:39:47,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:39:47,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:39:47,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:39:47,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:39:47,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:39:47,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 158 transitions, 1617 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:47,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:39:47,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:39:47,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:39:47,843 INFO L124 PetriNetUnfolderBase]: 357/668 cut-off events. [2024-06-20 16:39:47,843 INFO L125 PetriNetUnfolderBase]: For 30610/30610 co-relation queries the response was YES. [2024-06-20 16:39:47,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4702 conditions, 668 events. 357/668 cut-off events. For 30610/30610 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3186 event pairs, 42 based on Foata normal form. 2/669 useless extension candidates. Maximal degree in co-relation 4614. Up to 579 conditions per place. [2024-06-20 16:39:47,848 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 148 selfloop transitions, 25 changer transitions 0/176 dead transitions. [2024-06-20 16:39:47,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 176 transitions, 2059 flow [2024-06-20 16:39:47,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:39:47,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:39:47,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-20 16:39:47,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3942652329749104 [2024-06-20 16:39:47,849 INFO L175 Difference]: Start difference. First operand has 179 places, 158 transitions, 1617 flow. Second operand 9 states and 110 transitions. [2024-06-20 16:39:47,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 176 transitions, 2059 flow [2024-06-20 16:39:47,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 176 transitions, 1989 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-20 16:39:47,910 INFO L231 Difference]: Finished difference. Result has 182 places, 162 transitions, 1666 flow [2024-06-20 16:39:47,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1547, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1666, PETRI_PLACES=182, PETRI_TRANSITIONS=162} [2024-06-20 16:39:47,910 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 152 predicate places. [2024-06-20 16:39:47,910 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 162 transitions, 1666 flow [2024-06-20 16:39:47,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:47,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:39:47,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:39:47,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-20 16:39:47,911 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)] === [2024-06-20 16:39:47,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:39:47,912 INFO L85 PathProgramCache]: Analyzing trace with hash -755722065, now seen corresponding path program 1 times [2024-06-20 16:39:47,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:39:47,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131732251] [2024-06-20 16:39:47,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:39:47,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:39:47,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:39:48,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:39:48,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:39:48,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131732251] [2024-06-20 16:39:48,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131732251] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:39:48,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:39:48,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:39:48,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934018655] [2024-06-20 16:39:48,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:39:48,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:39:48,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:39:48,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:39:48,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:39:49,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:39:49,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 162 transitions, 1666 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:49,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:39:49,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:39:49,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:39:49,486 INFO L124 PetriNetUnfolderBase]: 363/679 cut-off events. [2024-06-20 16:39:49,487 INFO L125 PetriNetUnfolderBase]: For 32712/32712 co-relation queries the response was YES. [2024-06-20 16:39:49,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4824 conditions, 679 events. 363/679 cut-off events. For 32712/32712 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3229 event pairs, 36 based on Foata normal form. 2/680 useless extension candidates. Maximal degree in co-relation 4734. Up to 576 conditions per place. [2024-06-20 16:39:49,494 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 148 selfloop transitions, 30 changer transitions 0/181 dead transitions. [2024-06-20 16:39:49,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 181 transitions, 2136 flow [2024-06-20 16:39:49,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:39:49,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:39:49,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-20 16:39:49,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-20 16:39:49,496 INFO L175 Difference]: Start difference. First operand has 182 places, 162 transitions, 1666 flow. Second operand 10 states and 124 transitions. [2024-06-20 16:39:49,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 181 transitions, 2136 flow [2024-06-20 16:39:49,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 181 transitions, 2069 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-20 16:39:49,555 INFO L231 Difference]: Finished difference. Result has 186 places, 164 transitions, 1720 flow [2024-06-20 16:39:49,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1599, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1720, PETRI_PLACES=186, PETRI_TRANSITIONS=164} [2024-06-20 16:39:49,555 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 156 predicate places. [2024-06-20 16:39:49,555 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 164 transitions, 1720 flow [2024-06-20 16:39:49,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:49,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:39:49,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:39:49,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-20 16:39:49,556 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)] === [2024-06-20 16:39:49,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:39:49,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1029574727, now seen corresponding path program 2 times [2024-06-20 16:39:49,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:39:49,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552187810] [2024-06-20 16:39:49,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:39:49,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:39:49,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:39:50,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:39:50,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:39:50,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552187810] [2024-06-20 16:39:50,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552187810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:39:50,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:39:50,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:39:50,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784155853] [2024-06-20 16:39:50,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:39:50,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:39:50,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:39:50,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:39:50,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:39:50,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:39:50,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 164 transitions, 1720 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:50,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:39:50,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:39:50,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:39:51,267 INFO L124 PetriNetUnfolderBase]: 371/695 cut-off events. [2024-06-20 16:39:51,268 INFO L125 PetriNetUnfolderBase]: For 34607/34607 co-relation queries the response was YES. [2024-06-20 16:39:51,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5049 conditions, 695 events. 371/695 cut-off events. For 34607/34607 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3333 event pairs, 40 based on Foata normal form. 1/695 useless extension candidates. Maximal degree in co-relation 4958. Up to 584 conditions per place. [2024-06-20 16:39:51,273 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 149 selfloop transitions, 34 changer transitions 0/186 dead transitions. [2024-06-20 16:39:51,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 186 transitions, 2366 flow [2024-06-20 16:39:51,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:39:51,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:39:51,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-20 16:39:51,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-20 16:39:51,274 INFO L175 Difference]: Start difference. First operand has 186 places, 164 transitions, 1720 flow. Second operand 10 states and 125 transitions. [2024-06-20 16:39:51,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 186 transitions, 2366 flow [2024-06-20 16:39:51,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 186 transitions, 2236 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-20 16:39:51,335 INFO L231 Difference]: Finished difference. Result has 188 places, 171 transitions, 1814 flow [2024-06-20 16:39:51,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1590, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1814, PETRI_PLACES=188, PETRI_TRANSITIONS=171} [2024-06-20 16:39:51,335 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 158 predicate places. [2024-06-20 16:39:51,336 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 171 transitions, 1814 flow [2024-06-20 16:39:51,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:51,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:39:51,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:39:51,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-20 16:39:51,336 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)] === [2024-06-20 16:39:51,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:39:51,336 INFO L85 PathProgramCache]: Analyzing trace with hash -640251405, now seen corresponding path program 3 times [2024-06-20 16:39:51,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:39:51,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779826405] [2024-06-20 16:39:51,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:39:51,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:39:51,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:39:52,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:39:52,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:39:52,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779826405] [2024-06-20 16:39:52,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779826405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:39:52,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:39:52,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:39:52,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399207131] [2024-06-20 16:39:52,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:39:52,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:39:52,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:39:52,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:39:52,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:39:52,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:39:52,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 171 transitions, 1814 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:52,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:39:52,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:39:52,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:39:53,310 INFO L124 PetriNetUnfolderBase]: 369/692 cut-off events. [2024-06-20 16:39:53,310 INFO L125 PetriNetUnfolderBase]: For 35837/35837 co-relation queries the response was YES. [2024-06-20 16:39:53,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4939 conditions, 692 events. 369/692 cut-off events. For 35837/35837 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3324 event pairs, 36 based on Foata normal form. 1/692 useless extension candidates. Maximal degree in co-relation 4847. Up to 582 conditions per place. [2024-06-20 16:39:53,315 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 148 selfloop transitions, 34 changer transitions 0/185 dead transitions. [2024-06-20 16:39:53,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 185 transitions, 2220 flow [2024-06-20 16:39:53,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:39:53,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:39:53,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-20 16:39:53,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-20 16:39:53,316 INFO L175 Difference]: Start difference. First operand has 188 places, 171 transitions, 1814 flow. Second operand 10 states and 123 transitions. [2024-06-20 16:39:53,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 185 transitions, 2220 flow [2024-06-20 16:39:53,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 185 transitions, 2082 flow, removed 53 selfloop flow, removed 5 redundant places. [2024-06-20 16:39:53,380 INFO L231 Difference]: Finished difference. Result has 193 places, 171 transitions, 1749 flow [2024-06-20 16:39:53,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1676, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1749, PETRI_PLACES=193, PETRI_TRANSITIONS=171} [2024-06-20 16:39:53,381 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 163 predicate places. [2024-06-20 16:39:53,381 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 171 transitions, 1749 flow [2024-06-20 16:39:53,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:53,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:39:53,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:39:53,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-20 16:39:53,382 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)] === [2024-06-20 16:39:53,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:39:53,382 INFO L85 PathProgramCache]: Analyzing trace with hash -474796721, now seen corresponding path program 5 times [2024-06-20 16:39:53,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:39:53,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395004242] [2024-06-20 16:39:53,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:39:53,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:39:53,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:39:54,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:39:54,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:39:54,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395004242] [2024-06-20 16:39:54,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395004242] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:39:54,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:39:54,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:39:54,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333824252] [2024-06-20 16:39:54,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:39:54,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:39:54,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:39:54,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:39:54,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:39:54,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:39:54,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 171 transitions, 1749 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:54,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:39:54,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:39:54,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:39:54,691 INFO L124 PetriNetUnfolderBase]: 373/699 cut-off events. [2024-06-20 16:39:54,692 INFO L125 PetriNetUnfolderBase]: For 38108/38108 co-relation queries the response was YES. [2024-06-20 16:39:54,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4963 conditions, 699 events. 373/699 cut-off events. For 38108/38108 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3387 event pairs, 35 based on Foata normal form. 2/700 useless extension candidates. Maximal degree in co-relation 4869. Up to 598 conditions per place. [2024-06-20 16:39:54,699 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 155 selfloop transitions, 27 changer transitions 0/185 dead transitions. [2024-06-20 16:39:54,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 185 transitions, 2179 flow [2024-06-20 16:39:54,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:39:54,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:39:54,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-20 16:39:54,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3942652329749104 [2024-06-20 16:39:54,700 INFO L175 Difference]: Start difference. First operand has 193 places, 171 transitions, 1749 flow. Second operand 9 states and 110 transitions. [2024-06-20 16:39:54,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 185 transitions, 2179 flow [2024-06-20 16:39:54,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 185 transitions, 2113 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-20 16:39:54,781 INFO L231 Difference]: Finished difference. Result has 195 places, 174 transitions, 1788 flow [2024-06-20 16:39:54,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1683, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1788, PETRI_PLACES=195, PETRI_TRANSITIONS=174} [2024-06-20 16:39:54,781 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 165 predicate places. [2024-06-20 16:39:54,781 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 174 transitions, 1788 flow [2024-06-20 16:39:54,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:54,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:39:54,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:39:54,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-20 16:39:54,782 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)] === [2024-06-20 16:39:54,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:39:54,782 INFO L85 PathProgramCache]: Analyzing trace with hash -474612271, now seen corresponding path program 4 times [2024-06-20 16:39:54,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:39:54,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677141342] [2024-06-20 16:39:54,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:39:54,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:39:54,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:39:55,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:39:55,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:39:55,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677141342] [2024-06-20 16:39:55,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677141342] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:39:55,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:39:55,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:39:55,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166930957] [2024-06-20 16:39:55,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:39:55,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:39:55,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:39:55,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:39:55,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:39:56,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:39:56,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 174 transitions, 1788 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:56,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:39:56,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:39:56,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:39:56,385 INFO L124 PetriNetUnfolderBase]: 389/729 cut-off events. [2024-06-20 16:39:56,385 INFO L125 PetriNetUnfolderBase]: For 43771/43771 co-relation queries the response was YES. [2024-06-20 16:39:56,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5416 conditions, 729 events. 389/729 cut-off events. For 43771/43771 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3565 event pairs, 35 based on Foata normal form. 2/730 useless extension candidates. Maximal degree in co-relation 5320. Up to 592 conditions per place. [2024-06-20 16:39:56,390 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 152 selfloop transitions, 37 changer transitions 0/192 dead transitions. [2024-06-20 16:39:56,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 192 transitions, 2450 flow [2024-06-20 16:39:56,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:39:56,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:39:56,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-20 16:39:56,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2024-06-20 16:39:56,391 INFO L175 Difference]: Start difference. First operand has 195 places, 174 transitions, 1788 flow. Second operand 10 states and 126 transitions. [2024-06-20 16:39:56,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 192 transitions, 2450 flow [2024-06-20 16:39:56,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 192 transitions, 2374 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-20 16:39:56,455 INFO L231 Difference]: Finished difference. Result has 199 places, 179 transitions, 1930 flow [2024-06-20 16:39:56,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1712, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1930, PETRI_PLACES=199, PETRI_TRANSITIONS=179} [2024-06-20 16:39:56,456 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 169 predicate places. [2024-06-20 16:39:56,456 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 179 transitions, 1930 flow [2024-06-20 16:39:56,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:56,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:39:56,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:39:56,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-20 16:39:56,456 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)] === [2024-06-20 16:39:56,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:39:56,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1678423717, now seen corresponding path program 5 times [2024-06-20 16:39:56,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:39:56,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037916179] [2024-06-20 16:39:56,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:39:56,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:39:56,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:39:57,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:39:57,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:39:57,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037916179] [2024-06-20 16:39:57,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037916179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:39:57,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:39:57,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:39:57,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719687114] [2024-06-20 16:39:57,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:39:57,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:39:57,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:39:57,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:39:57,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:39:57,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:39:57,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 179 transitions, 1930 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:57,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:39:57,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:39:57,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:39:57,955 INFO L124 PetriNetUnfolderBase]: 420/787 cut-off events. [2024-06-20 16:39:57,955 INFO L125 PetriNetUnfolderBase]: For 55721/55721 co-relation queries the response was YES. [2024-06-20 16:39:57,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6411 conditions, 787 events. 420/787 cut-off events. For 55721/55721 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 3929 event pairs, 36 based on Foata normal form. 2/788 useless extension candidates. Maximal degree in co-relation 6314. Up to 546 conditions per place. [2024-06-20 16:39:57,962 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 144 selfloop transitions, 58 changer transitions 0/205 dead transitions. [2024-06-20 16:39:57,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 205 transitions, 3016 flow [2024-06-20 16:39:57,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:39:57,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:39:57,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-20 16:39:57,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4290322580645161 [2024-06-20 16:39:57,963 INFO L175 Difference]: Start difference. First operand has 199 places, 179 transitions, 1930 flow. Second operand 10 states and 133 transitions. [2024-06-20 16:39:57,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 205 transitions, 3016 flow [2024-06-20 16:39:58,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 205 transitions, 2904 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-20 16:39:58,049 INFO L231 Difference]: Finished difference. Result has 203 places, 188 transitions, 2212 flow [2024-06-20 16:39:58,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1818, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2212, PETRI_PLACES=203, PETRI_TRANSITIONS=188} [2024-06-20 16:39:58,049 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 173 predicate places. [2024-06-20 16:39:58,049 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 188 transitions, 2212 flow [2024-06-20 16:39:58,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:58,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:39:58,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:39:58,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-20 16:39:58,050 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)] === [2024-06-20 16:39:58,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:39:58,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1678417207, now seen corresponding path program 6 times [2024-06-20 16:39:58,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:39:58,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672084923] [2024-06-20 16:39:58,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:39:58,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:39:58,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:39:59,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:39:59,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:39:59,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672084923] [2024-06-20 16:39:59,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672084923] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:39:59,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:39:59,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:39:59,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501888793] [2024-06-20 16:39:59,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:39:59,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:39:59,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:39:59,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:39:59,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:39:59,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:39:59,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 188 transitions, 2212 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:59,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:39:59,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:39:59,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:39:59,887 INFO L124 PetriNetUnfolderBase]: 418/784 cut-off events. [2024-06-20 16:39:59,888 INFO L125 PetriNetUnfolderBase]: For 54383/54383 co-relation queries the response was YES. [2024-06-20 16:39:59,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6420 conditions, 784 events. 418/784 cut-off events. For 54383/54383 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 3930 event pairs, 36 based on Foata normal form. 1/784 useless extension candidates. Maximal degree in co-relation 6321. Up to 602 conditions per place. [2024-06-20 16:39:59,897 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 157 selfloop transitions, 54 changer transitions 0/214 dead transitions. [2024-06-20 16:39:59,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 214 transitions, 3191 flow [2024-06-20 16:39:59,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:39:59,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:39:59,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-20 16:39:59,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-20 16:39:59,899 INFO L175 Difference]: Start difference. First operand has 203 places, 188 transitions, 2212 flow. Second operand 10 states and 127 transitions. [2024-06-20 16:39:59,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 214 transitions, 3191 flow [2024-06-20 16:39:59,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 214 transitions, 3015 flow, removed 72 selfloop flow, removed 4 redundant places. [2024-06-20 16:39:59,988 INFO L231 Difference]: Finished difference. Result has 212 places, 200 transitions, 2499 flow [2024-06-20 16:39:59,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2084, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2499, PETRI_PLACES=212, PETRI_TRANSITIONS=200} [2024-06-20 16:39:59,989 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 182 predicate places. [2024-06-20 16:39:59,989 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 200 transitions, 2499 flow [2024-06-20 16:39:59,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:59,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:39:59,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:39:59,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-20 16:39:59,989 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)] === [2024-06-20 16:39:59,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:39:59,989 INFO L85 PathProgramCache]: Analyzing trace with hash -468125521, now seen corresponding path program 7 times [2024-06-20 16:39:59,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:39:59,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889295320] [2024-06-20 16:39:59,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:39:59,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:40:00,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:40:01,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:40:01,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:40:01,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889295320] [2024-06-20 16:40:01,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889295320] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:40:01,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:40:01,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:40:01,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497371082] [2024-06-20 16:40:01,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:40:01,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:40:01,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:40:01,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:40:01,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:40:01,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:40:01,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 200 transitions, 2499 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:01,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:40:01,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:40:01,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:40:01,582 INFO L124 PetriNetUnfolderBase]: 419/786 cut-off events. [2024-06-20 16:40:01,582 INFO L125 PetriNetUnfolderBase]: For 55193/55193 co-relation queries the response was YES. [2024-06-20 16:40:01,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6463 conditions, 786 events. 419/786 cut-off events. For 55193/55193 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3928 event pairs, 36 based on Foata normal form. 2/787 useless extension candidates. Maximal degree in co-relation 6359. Up to 548 conditions per place. [2024-06-20 16:40:01,589 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 142 selfloop transitions, 71 changer transitions 0/216 dead transitions. [2024-06-20 16:40:01,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 216 transitions, 3266 flow [2024-06-20 16:40:01,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:40:01,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:40:01,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-20 16:40:01,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-20 16:40:01,592 INFO L175 Difference]: Start difference. First operand has 212 places, 200 transitions, 2499 flow. Second operand 10 states and 130 transitions. [2024-06-20 16:40:01,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 216 transitions, 3266 flow [2024-06-20 16:40:01,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 216 transitions, 3092 flow, removed 71 selfloop flow, removed 4 redundant places. [2024-06-20 16:40:01,683 INFO L231 Difference]: Finished difference. Result has 218 places, 202 transitions, 2553 flow [2024-06-20 16:40:01,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2343, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2553, PETRI_PLACES=218, PETRI_TRANSITIONS=202} [2024-06-20 16:40:01,684 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 188 predicate places. [2024-06-20 16:40:01,684 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 202 transitions, 2553 flow [2024-06-20 16:40:01,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:01,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:40:01,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:40:01,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-20 16:40:01,685 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)] === [2024-06-20 16:40:01,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:40:01,685 INFO L85 PathProgramCache]: Analyzing trace with hash -474618781, now seen corresponding path program 8 times [2024-06-20 16:40:01,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:40:01,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755087424] [2024-06-20 16:40:01,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:40:01,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:40:01,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:40:03,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:40:03,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:40:03,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755087424] [2024-06-20 16:40:03,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755087424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:40:03,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:40:03,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:40:03,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281500875] [2024-06-20 16:40:03,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:40:03,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:40:03,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:40:03,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:40:03,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:40:03,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:40:03,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 202 transitions, 2553 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:03,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:40:03,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:40:03,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:40:03,584 INFO L124 PetriNetUnfolderBase]: 417/783 cut-off events. [2024-06-20 16:40:03,584 INFO L125 PetriNetUnfolderBase]: For 53124/53124 co-relation queries the response was YES. [2024-06-20 16:40:03,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6400 conditions, 783 events. 417/783 cut-off events. For 53124/53124 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 3917 event pairs, 36 based on Foata normal form. 1/783 useless extension candidates. Maximal degree in co-relation 6294. Up to 640 conditions per place. [2024-06-20 16:40:03,593 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 171 selfloop transitions, 41 changer transitions 0/215 dead transitions. [2024-06-20 16:40:03,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 215 transitions, 3142 flow [2024-06-20 16:40:03,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:40:03,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:40:03,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-20 16:40:03,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-20 16:40:03,595 INFO L175 Difference]: Start difference. First operand has 218 places, 202 transitions, 2553 flow. Second operand 10 states and 127 transitions. [2024-06-20 16:40:03,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 215 transitions, 3142 flow [2024-06-20 16:40:03,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 215 transitions, 2937 flow, removed 49 selfloop flow, removed 7 redundant places. [2024-06-20 16:40:03,687 INFO L231 Difference]: Finished difference. Result has 221 places, 203 transitions, 2458 flow [2024-06-20 16:40:03,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2356, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2458, PETRI_PLACES=221, PETRI_TRANSITIONS=203} [2024-06-20 16:40:03,688 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 191 predicate places. [2024-06-20 16:40:03,688 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 203 transitions, 2458 flow [2024-06-20 16:40:03,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:03,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:40:03,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:40:03,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-20 16:40:03,689 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)] === [2024-06-20 16:40:03,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:40:03,689 INFO L85 PathProgramCache]: Analyzing trace with hash -468116593, now seen corresponding path program 1 times [2024-06-20 16:40:03,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:40:03,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263730511] [2024-06-20 16:40:03,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:40:03,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:40:03,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:40:04,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:40:04,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:40:04,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263730511] [2024-06-20 16:40:04,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263730511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:40:04,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:40:04,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:40:04,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654163514] [2024-06-20 16:40:04,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:40:04,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:40:04,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:40:04,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:40:04,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:40:05,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:40:05,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 203 transitions, 2458 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:05,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:40:05,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:40:05,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:40:05,410 INFO L124 PetriNetUnfolderBase]: 421/792 cut-off events. [2024-06-20 16:40:05,411 INFO L125 PetriNetUnfolderBase]: For 55581/55581 co-relation queries the response was YES. [2024-06-20 16:40:05,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6343 conditions, 792 events. 421/792 cut-off events. For 55581/55581 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 3991 event pairs, 39 based on Foata normal form. 2/793 useless extension candidates. Maximal degree in co-relation 6236. Up to 705 conditions per place. [2024-06-20 16:40:05,422 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 195 selfloop transitions, 19 changer transitions 0/217 dead transitions. [2024-06-20 16:40:05,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 217 transitions, 2950 flow [2024-06-20 16:40:05,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:40:05,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:40:05,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-20 16:40:05,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774193548387097 [2024-06-20 16:40:05,424 INFO L175 Difference]: Start difference. First operand has 221 places, 203 transitions, 2458 flow. Second operand 10 states and 117 transitions. [2024-06-20 16:40:05,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 217 transitions, 2950 flow [2024-06-20 16:40:05,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 217 transitions, 2861 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-20 16:40:05,517 INFO L231 Difference]: Finished difference. Result has 224 places, 204 transitions, 2439 flow [2024-06-20 16:40:05,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2369, PETRI_DIFFERENCE_MINUEND_PLACES=214, 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=10, PETRI_FLOW=2439, PETRI_PLACES=224, PETRI_TRANSITIONS=204} [2024-06-20 16:40:05,518 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 194 predicate places. [2024-06-20 16:40:05,518 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 204 transitions, 2439 flow [2024-06-20 16:40:05,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:05,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:40:05,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:40:05,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-20 16:40:05,519 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)] === [2024-06-20 16:40:05,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:40:05,519 INFO L85 PathProgramCache]: Analyzing trace with hash -893845833, now seen corresponding path program 6 times [2024-06-20 16:40:05,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:40:05,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006217578] [2024-06-20 16:40:05,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:40:05,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:40:05,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:40:06,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:40:06,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:40:06,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006217578] [2024-06-20 16:40:06,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006217578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:40:06,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:40:06,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:40:06,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130220966] [2024-06-20 16:40:06,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:40:06,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:40:06,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:40:06,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:40:06,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:40:06,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:40:06,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 204 transitions, 2439 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:06,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:40:06,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:40:06,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:40:06,728 INFO L124 PetriNetUnfolderBase]: 425/799 cut-off events. [2024-06-20 16:40:06,728 INFO L125 PetriNetUnfolderBase]: For 57491/57491 co-relation queries the response was YES. [2024-06-20 16:40:06,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6382 conditions, 799 events. 425/799 cut-off events. For 57491/57491 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4017 event pairs, 44 based on Foata normal form. 2/800 useless extension candidates. Maximal degree in co-relation 6274. Up to 674 conditions per place. [2024-06-20 16:40:06,758 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 179 selfloop transitions, 33 changer transitions 0/215 dead transitions. [2024-06-20 16:40:06,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 215 transitions, 2920 flow [2024-06-20 16:40:06,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:40:06,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:40:06,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-20 16:40:06,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38387096774193546 [2024-06-20 16:40:06,759 INFO L175 Difference]: Start difference. First operand has 224 places, 204 transitions, 2439 flow. Second operand 10 states and 119 transitions. [2024-06-20 16:40:06,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 215 transitions, 2920 flow [2024-06-20 16:40:06,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 215 transitions, 2857 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-20 16:40:06,852 INFO L231 Difference]: Finished difference. Result has 226 places, 206 transitions, 2485 flow [2024-06-20 16:40:06,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2376, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2485, PETRI_PLACES=226, PETRI_TRANSITIONS=206} [2024-06-20 16:40:06,853 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 196 predicate places. [2024-06-20 16:40:06,853 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 206 transitions, 2485 flow [2024-06-20 16:40:06,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:06,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:40:06,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:40:06,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-20 16:40:06,853 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)] === [2024-06-20 16:40:06,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:40:06,854 INFO L85 PathProgramCache]: Analyzing trace with hash -893661383, now seen corresponding path program 9 times [2024-06-20 16:40:06,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:40:06,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359416802] [2024-06-20 16:40:06,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:40:06,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:40:06,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:40:08,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:40:08,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:40:08,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359416802] [2024-06-20 16:40:08,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359416802] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:40:08,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:40:08,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:40:08,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530355776] [2024-06-20 16:40:08,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:40:08,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:40:08,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:40:08,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:40:08,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:40:08,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:40:08,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 206 transitions, 2485 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:08,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:40:08,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:40:08,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:40:08,526 INFO L124 PetriNetUnfolderBase]: 441/831 cut-off events. [2024-06-20 16:40:08,526 INFO L125 PetriNetUnfolderBase]: For 64654/64654 co-relation queries the response was YES. [2024-06-20 16:40:08,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6873 conditions, 831 events. 441/831 cut-off events. For 64654/64654 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4264 event pairs, 43 based on Foata normal form. 2/832 useless extension candidates. Maximal degree in co-relation 6764. Up to 668 conditions per place. [2024-06-20 16:40:08,533 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 176 selfloop transitions, 43 changer transitions 0/222 dead transitions. [2024-06-20 16:40:08,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 222 transitions, 3235 flow [2024-06-20 16:40:08,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:40:08,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:40:08,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-20 16:40:08,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-20 16:40:08,534 INFO L175 Difference]: Start difference. First operand has 226 places, 206 transitions, 2485 flow. Second operand 10 states and 125 transitions. [2024-06-20 16:40:08,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 222 transitions, 3235 flow [2024-06-20 16:40:08,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 222 transitions, 3111 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-20 16:40:08,647 INFO L231 Difference]: Finished difference. Result has 226 places, 211 transitions, 2606 flow [2024-06-20 16:40:08,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2361, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2606, PETRI_PLACES=226, PETRI_TRANSITIONS=211} [2024-06-20 16:40:08,647 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 196 predicate places. [2024-06-20 16:40:08,647 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 211 transitions, 2606 flow [2024-06-20 16:40:08,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:08,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:40:08,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:40:08,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-20 16:40:08,648 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)] === [2024-06-20 16:40:08,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:40:08,649 INFO L85 PathProgramCache]: Analyzing trace with hash 617960497, now seen corresponding path program 2 times [2024-06-20 16:40:08,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:40:08,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273804981] [2024-06-20 16:40:08,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:40:08,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:40:08,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:40:09,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:40:09,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:40:09,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273804981] [2024-06-20 16:40:09,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273804981] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:40:09,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:40:09,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:40:09,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999562243] [2024-06-20 16:40:09,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:40:09,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:40:09,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:40:09,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:40:09,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:40:10,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:40:10,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 211 transitions, 2606 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:10,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:40:10,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:40:10,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:40:10,259 INFO L124 PetriNetUnfolderBase]: 445/839 cut-off events. [2024-06-20 16:40:10,260 INFO L125 PetriNetUnfolderBase]: For 67005/67005 co-relation queries the response was YES. [2024-06-20 16:40:10,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6952 conditions, 839 events. 445/839 cut-off events. For 67005/67005 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4321 event pairs, 40 based on Foata normal form. 2/840 useless extension candidates. Maximal degree in co-relation 6845. Up to 720 conditions per place. [2024-06-20 16:40:10,267 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 189 selfloop transitions, 31 changer transitions 0/223 dead transitions. [2024-06-20 16:40:10,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 223 transitions, 3108 flow [2024-06-20 16:40:10,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:40:10,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:40:10,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-20 16:40:10,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38387096774193546 [2024-06-20 16:40:10,268 INFO L175 Difference]: Start difference. First operand has 226 places, 211 transitions, 2606 flow. Second operand 10 states and 119 transitions. [2024-06-20 16:40:10,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 223 transitions, 3108 flow [2024-06-20 16:40:10,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 223 transitions, 2978 flow, removed 43 selfloop flow, removed 6 redundant places. [2024-06-20 16:40:10,373 INFO L231 Difference]: Finished difference. Result has 230 places, 212 transitions, 2572 flow [2024-06-20 16:40:10,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2476, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2572, PETRI_PLACES=230, PETRI_TRANSITIONS=212} [2024-06-20 16:40:10,374 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 200 predicate places. [2024-06-20 16:40:10,374 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 212 transitions, 2572 flow [2024-06-20 16:40:10,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:10,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:40:10,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:40:10,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-20 16:40:10,374 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)] === [2024-06-20 16:40:10,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:40:10,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1525593415, now seen corresponding path program 10 times [2024-06-20 16:40:10,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:40:10,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207992291] [2024-06-20 16:40:10,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:40:10,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:40:10,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:40:11,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:40:11,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:40:11,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207992291] [2024-06-20 16:40:11,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207992291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:40:11,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:40:11,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:40:11,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685379733] [2024-06-20 16:40:11,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:40:11,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:40:11,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:40:11,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:40:11,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:40:11,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:40:11,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 212 transitions, 2572 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:11,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:40:11,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:40:11,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:40:12,319 INFO L124 PetriNetUnfolderBase]: 458/862 cut-off events. [2024-06-20 16:40:12,319 INFO L125 PetriNetUnfolderBase]: For 70608/70608 co-relation queries the response was YES. [2024-06-20 16:40:12,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7324 conditions, 862 events. 458/862 cut-off events. For 70608/70608 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4466 event pairs, 43 based on Foata normal form. 1/862 useless extension candidates. Maximal degree in co-relation 7215. Up to 571 conditions per place. [2024-06-20 16:40:12,328 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 151 selfloop transitions, 84 changer transitions 0/238 dead transitions. [2024-06-20 16:40:12,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 238 transitions, 3810 flow [2024-06-20 16:40:12,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:40:12,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:40:12,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-20 16:40:12,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42258064516129035 [2024-06-20 16:40:12,329 INFO L175 Difference]: Start difference. First operand has 230 places, 212 transitions, 2572 flow. Second operand 10 states and 131 transitions. [2024-06-20 16:40:12,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 238 transitions, 3810 flow [2024-06-20 16:40:12,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 238 transitions, 3721 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-20 16:40:12,444 INFO L231 Difference]: Finished difference. Result has 234 places, 224 transitions, 3068 flow [2024-06-20 16:40:12,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2483, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3068, PETRI_PLACES=234, PETRI_TRANSITIONS=224} [2024-06-20 16:40:12,445 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 204 predicate places. [2024-06-20 16:40:12,445 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 224 transitions, 3068 flow [2024-06-20 16:40:12,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:12,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:40:12,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:40:12,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-20 16:40:12,445 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)] === [2024-06-20 16:40:12,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:40:12,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1256133201, now seen corresponding path program 11 times [2024-06-20 16:40:12,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:40:12,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440791392] [2024-06-20 16:40:12,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:40:12,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:40:12,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:40:13,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:40:13,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:40:13,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440791392] [2024-06-20 16:40:13,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440791392] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:40:13,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:40:13,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:40:13,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255641841] [2024-06-20 16:40:13,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:40:13,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:40:13,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:40:13,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:40:13,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:40:13,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:40:13,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 224 transitions, 3068 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:13,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:40:13,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:40:13,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:40:14,366 INFO L124 PetriNetUnfolderBase]: 471/890 cut-off events. [2024-06-20 16:40:14,366 INFO L125 PetriNetUnfolderBase]: For 77758/77758 co-relation queries the response was YES. [2024-06-20 16:40:14,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7999 conditions, 890 events. 471/890 cut-off events. For 77758/77758 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4673 event pairs, 44 based on Foata normal form. 1/890 useless extension candidates. Maximal degree in co-relation 7887. Up to 668 conditions per place. [2024-06-20 16:40:14,374 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 182 selfloop transitions, 58 changer transitions 0/243 dead transitions. [2024-06-20 16:40:14,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 243 transitions, 4195 flow [2024-06-20 16:40:14,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:40:14,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:40:14,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-20 16:40:14,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4290322580645161 [2024-06-20 16:40:14,375 INFO L175 Difference]: Start difference. First operand has 234 places, 224 transitions, 3068 flow. Second operand 10 states and 133 transitions. [2024-06-20 16:40:14,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 243 transitions, 4195 flow [2024-06-20 16:40:14,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 243 transitions, 4041 flow, removed 60 selfloop flow, removed 3 redundant places. [2024-06-20 16:40:14,510 INFO L231 Difference]: Finished difference. Result has 241 places, 231 transitions, 3278 flow [2024-06-20 16:40:14,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2914, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3278, PETRI_PLACES=241, PETRI_TRANSITIONS=231} [2024-06-20 16:40:14,510 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 211 predicate places. [2024-06-20 16:40:14,510 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 231 transitions, 3278 flow [2024-06-20 16:40:14,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:14,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:40:14,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:40:14,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-20 16:40:14,511 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)] === [2024-06-20 16:40:14,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:40:14,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1249877091, now seen corresponding path program 12 times [2024-06-20 16:40:14,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:40:14,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570810626] [2024-06-20 16:40:14,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:40:14,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:40:14,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:40:15,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:40:15,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:40:15,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570810626] [2024-06-20 16:40:15,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570810626] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:40:15,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:40:15,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:40:15,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390372046] [2024-06-20 16:40:15,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:40:15,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:40:15,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:40:15,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:40:15,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:40:15,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:40:15,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 231 transitions, 3278 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:15,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:40:15,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:40:15,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:40:16,294 INFO L124 PetriNetUnfolderBase]: 469/886 cut-off events. [2024-06-20 16:40:16,294 INFO L125 PetriNetUnfolderBase]: For 76573/76573 co-relation queries the response was YES. [2024-06-20 16:40:16,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7908 conditions, 886 events. 469/886 cut-off events. For 76573/76573 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4633 event pairs, 46 based on Foata normal form. 1/886 useless extension candidates. Maximal degree in co-relation 7794. Up to 717 conditions per place. [2024-06-20 16:40:16,301 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 192 selfloop transitions, 46 changer transitions 0/241 dead transitions. [2024-06-20 16:40:16,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 241 transitions, 3906 flow [2024-06-20 16:40:16,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:40:16,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:40:16,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-20 16:40:16,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2024-06-20 16:40:16,303 INFO L175 Difference]: Start difference. First operand has 241 places, 231 transitions, 3278 flow. Second operand 10 states and 126 transitions. [2024-06-20 16:40:16,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 241 transitions, 3906 flow [2024-06-20 16:40:16,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 241 transitions, 3647 flow, removed 65 selfloop flow, removed 7 redundant places. [2024-06-20 16:40:16,467 INFO L231 Difference]: Finished difference. Result has 244 places, 231 transitions, 3116 flow [2024-06-20 16:40:16,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3019, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3116, PETRI_PLACES=244, PETRI_TRANSITIONS=231} [2024-06-20 16:40:16,468 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 214 predicate places. [2024-06-20 16:40:16,468 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 231 transitions, 3116 flow [2024-06-20 16:40:16,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:16,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:40:16,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:40:16,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-20 16:40:16,468 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)] === [2024-06-20 16:40:16,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:40:16,468 INFO L85 PathProgramCache]: Analyzing trace with hash 913179387, now seen corresponding path program 1 times [2024-06-20 16:40:16,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:40:16,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810419708] [2024-06-20 16:40:16,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:40:16,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:40:16,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:40:17,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:40:17,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:40:17,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810419708] [2024-06-20 16:40:17,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810419708] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:40:17,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:40:17,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:40:17,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512802805] [2024-06-20 16:40:17,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:40:17,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:40:17,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:40:17,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:40:17,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:40:17,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:40:17,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 231 transitions, 3116 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:17,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:40:17,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:40:17,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:40:18,047 INFO L124 PetriNetUnfolderBase]: 472/891 cut-off events. [2024-06-20 16:40:18,047 INFO L125 PetriNetUnfolderBase]: For 76679/76679 co-relation queries the response was YES. [2024-06-20 16:40:18,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7692 conditions, 891 events. 472/891 cut-off events. For 76679/76679 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4653 event pairs, 49 based on Foata normal form. 1/891 useless extension candidates. Maximal degree in co-relation 7579. Up to 789 conditions per place. [2024-06-20 16:40:18,054 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 218 selfloop transitions, 23 changer transitions 0/244 dead transitions. [2024-06-20 16:40:18,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 244 transitions, 3796 flow [2024-06-20 16:40:18,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:40:18,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:40:18,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-20 16:40:18,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375366568914956 [2024-06-20 16:40:18,055 INFO L175 Difference]: Start difference. First operand has 244 places, 231 transitions, 3116 flow. Second operand 11 states and 128 transitions. [2024-06-20 16:40:18,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 244 transitions, 3796 flow [2024-06-20 16:40:18,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 244 transitions, 3620 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-20 16:40:18,189 INFO L231 Difference]: Finished difference. Result has 246 places, 233 transitions, 3033 flow [2024-06-20 16:40:18,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2940, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3033, PETRI_PLACES=246, PETRI_TRANSITIONS=233} [2024-06-20 16:40:18,189 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 216 predicate places. [2024-06-20 16:40:18,189 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 233 transitions, 3033 flow [2024-06-20 16:40:18,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:18,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:40:18,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:40:18,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-20 16:40:18,190 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)] === [2024-06-20 16:40:18,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:40:18,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1256139959, now seen corresponding path program 2 times [2024-06-20 16:40:18,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:40:18,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867304055] [2024-06-20 16:40:18,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:40:18,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:40:18,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:40:19,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:40:19,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:40:19,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867304055] [2024-06-20 16:40:19,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867304055] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:40:19,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:40:19,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:40:19,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114529503] [2024-06-20 16:40:19,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:40:19,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:40:19,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:40:19,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:40:19,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:40:19,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:40:19,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 233 transitions, 3033 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) [2024-06-20 16:40:19,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:40:19,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:40:19,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:40:19,883 INFO L124 PetriNetUnfolderBase]: 475/896 cut-off events. [2024-06-20 16:40:19,883 INFO L125 PetriNetUnfolderBase]: For 78652/78652 co-relation queries the response was YES. [2024-06-20 16:40:19,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7618 conditions, 896 events. 475/896 cut-off events. For 78652/78652 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 4695 event pairs, 44 based on Foata normal form. 1/896 useless extension candidates. Maximal degree in co-relation 7505. Up to 718 conditions per place. [2024-06-20 16:40:19,895 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 194 selfloop transitions, 47 changer transitions 0/244 dead transitions. [2024-06-20 16:40:19,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 244 transitions, 3713 flow [2024-06-20 16:40:19,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:40:19,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:40:19,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-20 16:40:19,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4265232974910394 [2024-06-20 16:40:19,897 INFO L175 Difference]: Start difference. First operand has 246 places, 233 transitions, 3033 flow. Second operand 9 states and 119 transitions. [2024-06-20 16:40:19,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 244 transitions, 3713 flow [2024-06-20 16:40:20,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 244 transitions, 3636 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-20 16:40:20,058 INFO L231 Difference]: Finished difference. Result has 246 places, 235 transitions, 3100 flow [2024-06-20 16:40:20,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2956, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3100, PETRI_PLACES=246, PETRI_TRANSITIONS=235} [2024-06-20 16:40:20,059 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 216 predicate places. [2024-06-20 16:40:20,059 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 235 transitions, 3100 flow [2024-06-20 16:40:20,059 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) [2024-06-20 16:40:20,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:40:20,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:40:20,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-20 16:40:20,059 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)] === [2024-06-20 16:40:20,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:40:20,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1256139711, now seen corresponding path program 13 times [2024-06-20 16:40:20,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:40:20,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986710996] [2024-06-20 16:40:20,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:40:20,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:40:20,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:40:21,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:40:21,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:40:21,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986710996] [2024-06-20 16:40:21,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986710996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:40:21,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:40:21,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:40:21,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829043784] [2024-06-20 16:40:21,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:40:21,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:40:21,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:40:21,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:40:21,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:40:21,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:40:21,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 235 transitions, 3100 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:21,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:40:21,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:40:21,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:40:22,099 INFO L124 PetriNetUnfolderBase]: 486/918 cut-off events. [2024-06-20 16:40:22,100 INFO L125 PetriNetUnfolderBase]: For 85514/85514 co-relation queries the response was YES. [2024-06-20 16:40:22,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7974 conditions, 918 events. 486/918 cut-off events. For 85514/85514 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4857 event pairs, 46 based on Foata normal form. 2/919 useless extension candidates. Maximal degree in co-relation 7861. Up to 686 conditions per place. [2024-06-20 16:40:22,109 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 188 selfloop transitions, 62 changer transitions 0/253 dead transitions. [2024-06-20 16:40:22,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 253 transitions, 4210 flow [2024-06-20 16:40:22,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:40:22,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:40:22,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-20 16:40:22,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.432258064516129 [2024-06-20 16:40:22,110 INFO L175 Difference]: Start difference. First operand has 246 places, 235 transitions, 3100 flow. Second operand 10 states and 134 transitions. [2024-06-20 16:40:22,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 253 transitions, 4210 flow [2024-06-20 16:40:22,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 253 transitions, 4047 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-20 16:40:22,280 INFO L231 Difference]: Finished difference. Result has 249 places, 241 transitions, 3247 flow [2024-06-20 16:40:22,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2937, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3247, PETRI_PLACES=249, PETRI_TRANSITIONS=241} [2024-06-20 16:40:22,280 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 219 predicate places. [2024-06-20 16:40:22,281 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 241 transitions, 3247 flow [2024-06-20 16:40:22,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:22,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:40:22,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:40:22,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-20 16:40:22,281 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)] === [2024-06-20 16:40:22,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:40:22,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1256379279, now seen corresponding path program 3 times [2024-06-20 16:40:22,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:40:22,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690102287] [2024-06-20 16:40:22,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:40:22,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:40:22,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:40:23,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:40:23,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:40:23,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690102287] [2024-06-20 16:40:23,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690102287] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:40:23,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:40:23,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:40:23,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716236851] [2024-06-20 16:40:23,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:40:23,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:40:23,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:40:23,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:40:23,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:40:23,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:40:23,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 241 transitions, 3247 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) [2024-06-20 16:40:23,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:40:23,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:40:23,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:40:23,664 INFO L124 PetriNetUnfolderBase]: 490/926 cut-off events. [2024-06-20 16:40:23,664 INFO L125 PetriNetUnfolderBase]: For 89401/89401 co-relation queries the response was YES. [2024-06-20 16:40:23,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8084 conditions, 926 events. 490/926 cut-off events. For 89401/89401 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 4926 event pairs, 41 based on Foata normal form. 2/927 useless extension candidates. Maximal degree in co-relation 7970. Up to 816 conditions per place. [2024-06-20 16:40:23,672 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 229 selfloop transitions, 20 changer transitions 0/252 dead transitions. [2024-06-20 16:40:23,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 252 transitions, 3807 flow [2024-06-20 16:40:23,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:40:23,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:40:23,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-20 16:40:23,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835125448028674 [2024-06-20 16:40:23,673 INFO L175 Difference]: Start difference. First operand has 249 places, 241 transitions, 3247 flow. Second operand 9 states and 107 transitions. [2024-06-20 16:40:23,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 252 transitions, 3807 flow [2024-06-20 16:40:23,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 252 transitions, 3616 flow, removed 47 selfloop flow, removed 6 redundant places. [2024-06-20 16:40:23,837 INFO L231 Difference]: Finished difference. Result has 252 places, 242 transitions, 3132 flow [2024-06-20 16:40:23,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3056, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3132, PETRI_PLACES=252, PETRI_TRANSITIONS=242} [2024-06-20 16:40:23,837 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 222 predicate places. [2024-06-20 16:40:23,837 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 242 transitions, 3132 flow [2024-06-20 16:40:23,838 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) [2024-06-20 16:40:23,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:40:23,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:40:23,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-20 16:40:23,838 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)] === [2024-06-20 16:40:23,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:40:23,839 INFO L85 PathProgramCache]: Analyzing trace with hash 617720929, now seen corresponding path program 14 times [2024-06-20 16:40:23,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:40:23,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652586976] [2024-06-20 16:40:23,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:40:23,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:40:23,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:40:25,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:40:25,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:40:25,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652586976] [2024-06-20 16:40:25,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652586976] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:40:25,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:40:25,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:40:25,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816233767] [2024-06-20 16:40:25,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:40:25,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:40:25,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:40:25,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:40:25,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:40:25,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:40:25,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 242 transitions, 3132 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:25,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:40:25,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:40:25,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:40:25,865 INFO L124 PetriNetUnfolderBase]: 493/931 cut-off events. [2024-06-20 16:40:25,865 INFO L125 PetriNetUnfolderBase]: For 89217/89217 co-relation queries the response was YES. [2024-06-20 16:40:25,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8018 conditions, 931 events. 493/931 cut-off events. For 89217/89217 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 4954 event pairs, 44 based on Foata normal form. 1/931 useless extension candidates. Maximal degree in co-relation 7903. Up to 628 conditions per place. [2024-06-20 16:40:25,873 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 163 selfloop transitions, 92 changer transitions 0/258 dead transitions. [2024-06-20 16:40:25,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 258 transitions, 4161 flow [2024-06-20 16:40:25,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:40:25,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:40:25,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-20 16:40:25,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-20 16:40:25,874 INFO L175 Difference]: Start difference. First operand has 252 places, 242 transitions, 3132 flow. Second operand 10 states and 130 transitions. [2024-06-20 16:40:25,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 258 transitions, 4161 flow [2024-06-20 16:40:26,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 258 transitions, 4095 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-20 16:40:26,039 INFO L231 Difference]: Finished difference. Result has 256 places, 245 transitions, 3325 flow [2024-06-20 16:40:26,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3066, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3325, PETRI_PLACES=256, PETRI_TRANSITIONS=245} [2024-06-20 16:40:26,040 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 226 predicate places. [2024-06-20 16:40:26,040 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 245 transitions, 3325 flow [2024-06-20 16:40:26,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:26,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:40:26,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:40:26,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-20 16:40:26,040 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)] === [2024-06-20 16:40:26,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:40:26,041 INFO L85 PathProgramCache]: Analyzing trace with hash -887174633, now seen corresponding path program 15 times [2024-06-20 16:40:26,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:40:26,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205990929] [2024-06-20 16:40:26,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:40:26,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:40:26,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:40:27,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:40:27,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:40:27,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205990929] [2024-06-20 16:40:27,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205990929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:40:27,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:40:27,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:40:27,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114517697] [2024-06-20 16:40:27,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:40:27,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:40:27,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:40:27,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:40:27,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:40:27,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:40:27,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 245 transitions, 3325 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:27,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:40:27,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:40:27,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:40:27,901 INFO L124 PetriNetUnfolderBase]: 490/928 cut-off events. [2024-06-20 16:40:27,902 INFO L125 PetriNetUnfolderBase]: For 89170/89170 co-relation queries the response was YES. [2024-06-20 16:40:27,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7991 conditions, 928 events. 490/928 cut-off events. For 89170/89170 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 4956 event pairs, 43 based on Foata normal form. 2/929 useless extension candidates. Maximal degree in co-relation 7874. Up to 698 conditions per place. [2024-06-20 16:40:27,913 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 189 selfloop transitions, 64 changer transitions 0/256 dead transitions. [2024-06-20 16:40:27,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 256 transitions, 4139 flow [2024-06-20 16:40:27,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:40:27,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:40:27,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-20 16:40:27,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42258064516129035 [2024-06-20 16:40:27,915 INFO L175 Difference]: Start difference. First operand has 256 places, 245 transitions, 3325 flow. Second operand 10 states and 131 transitions. [2024-06-20 16:40:27,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 256 transitions, 4139 flow [2024-06-20 16:40:28,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 256 transitions, 3822 flow, removed 72 selfloop flow, removed 7 redundant places. [2024-06-20 16:40:28,114 INFO L231 Difference]: Finished difference. Result has 259 places, 245 transitions, 3144 flow [2024-06-20 16:40:28,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3008, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3144, PETRI_PLACES=259, PETRI_TRANSITIONS=245} [2024-06-20 16:40:28,115 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 229 predicate places. [2024-06-20 16:40:28,115 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 245 transitions, 3144 flow [2024-06-20 16:40:28,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:28,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:40:28,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:40:28,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-20 16:40:28,115 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)] === [2024-06-20 16:40:28,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:40:28,116 INFO L85 PathProgramCache]: Analyzing trace with hash -887166015, now seen corresponding path program 3 times [2024-06-20 16:40:28,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:40:28,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816796489] [2024-06-20 16:40:28,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:40:28,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:40:28,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:40:29,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:40:29,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:40:29,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816796489] [2024-06-20 16:40:29,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816796489] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:40:29,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:40:29,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:40:29,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680813067] [2024-06-20 16:40:29,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:40:29,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:40:29,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:40:29,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:40:29,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:40:29,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:40:29,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 245 transitions, 3144 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:29,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:40:29,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:40:29,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:40:29,598 INFO L124 PetriNetUnfolderBase]: 493/933 cut-off events. [2024-06-20 16:40:29,598 INFO L125 PetriNetUnfolderBase]: For 88419/88419 co-relation queries the response was YES. [2024-06-20 16:40:29,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7866 conditions, 933 events. 493/933 cut-off events. For 88419/88419 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 4987 event pairs, 43 based on Foata normal form. 1/933 useless extension candidates. Maximal degree in co-relation 7748. Up to 749 conditions per place. [2024-06-20 16:40:29,607 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 201 selfloop transitions, 53 changer transitions 0/257 dead transitions. [2024-06-20 16:40:29,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 257 transitions, 3868 flow [2024-06-20 16:40:29,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:40:29,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:40:29,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-20 16:40:29,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4129032258064516 [2024-06-20 16:40:29,608 INFO L175 Difference]: Start difference. First operand has 259 places, 245 transitions, 3144 flow. Second operand 10 states and 128 transitions. [2024-06-20 16:40:29,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 257 transitions, 3868 flow [2024-06-20 16:40:29,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 257 transitions, 3718 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-20 16:40:29,778 INFO L231 Difference]: Finished difference. Result has 260 places, 247 transitions, 3155 flow [2024-06-20 16:40:29,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2997, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3155, PETRI_PLACES=260, PETRI_TRANSITIONS=247} [2024-06-20 16:40:29,779 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 230 predicate places. [2024-06-20 16:40:29,779 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 247 transitions, 3155 flow [2024-06-20 16:40:29,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:29,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:40:29,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:40:29,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-20 16:40:29,779 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)] === [2024-06-20 16:40:29,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:40:29,779 INFO L85 PathProgramCache]: Analyzing trace with hash -887174385, now seen corresponding path program 4 times [2024-06-20 16:40:29,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:40:29,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7353679] [2024-06-20 16:40:29,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:40:29,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:40:29,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:40:30,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:40:30,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:40:30,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7353679] [2024-06-20 16:40:30,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7353679] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:40:30,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:40:30,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:40:30,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881973888] [2024-06-20 16:40:30,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:40:30,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:40:30,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:40:30,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:40:30,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:40:30,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:40:30,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 247 transitions, 3155 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) [2024-06-20 16:40:30,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:40:30,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:40:30,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:40:31,235 INFO L124 PetriNetUnfolderBase]: 490/927 cut-off events. [2024-06-20 16:40:31,235 INFO L125 PetriNetUnfolderBase]: For 87789/87789 co-relation queries the response was YES. [2024-06-20 16:40:31,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7745 conditions, 927 events. 490/927 cut-off events. For 87789/87789 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 4945 event pairs, 43 based on Foata normal form. 1/927 useless extension candidates. Maximal degree in co-relation 7626. Up to 745 conditions per place. [2024-06-20 16:40:31,243 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 202 selfloop transitions, 50 changer transitions 0/255 dead transitions. [2024-06-20 16:40:31,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 255 transitions, 3677 flow [2024-06-20 16:40:31,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:40:31,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:40:31,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-20 16:40:31,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-20 16:40:31,245 INFO L175 Difference]: Start difference. First operand has 260 places, 247 transitions, 3155 flow. Second operand 9 states and 117 transitions. [2024-06-20 16:40:31,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 255 transitions, 3677 flow [2024-06-20 16:40:31,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 255 transitions, 3486 flow, removed 36 selfloop flow, removed 10 redundant places. [2024-06-20 16:40:31,431 INFO L231 Difference]: Finished difference. Result has 259 places, 247 transitions, 3073 flow [2024-06-20 16:40:31,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2964, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3073, PETRI_PLACES=259, PETRI_TRANSITIONS=247} [2024-06-20 16:40:31,432 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 229 predicate places. [2024-06-20 16:40:31,432 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 247 transitions, 3073 flow [2024-06-20 16:40:31,432 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) [2024-06-20 16:40:31,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:40:31,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:40:31,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-20 16:40:31,432 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)] === [2024-06-20 16:40:31,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:40:31,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1525830565, now seen corresponding path program 16 times [2024-06-20 16:40:31,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:40:31,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333334151] [2024-06-20 16:40:31,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:40:31,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:40:31,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:40:33,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:40:33,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:40:33,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333334151] [2024-06-20 16:40:33,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333334151] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:40:33,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:40:33,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:40:33,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511410524] [2024-06-20 16:40:33,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:40:33,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:40:33,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:40:33,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:40:33,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:40:33,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:40:33,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 247 transitions, 3073 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:33,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:40:33,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:40:33,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:40:33,585 INFO L124 PetriNetUnfolderBase]: 488/924 cut-off events. [2024-06-20 16:40:33,586 INFO L125 PetriNetUnfolderBase]: For 86841/86841 co-relation queries the response was YES. [2024-06-20 16:40:33,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7562 conditions, 924 events. 488/924 cut-off events. For 86841/86841 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 4932 event pairs, 43 based on Foata normal form. 1/924 useless extension candidates. Maximal degree in co-relation 7445. Up to 623 conditions per place. [2024-06-20 16:40:33,596 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 161 selfloop transitions, 95 changer transitions 0/259 dead transitions. [2024-06-20 16:40:33,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 259 transitions, 3784 flow [2024-06-20 16:40:33,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:40:33,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:40:33,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-20 16:40:33,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-20 16:40:33,597 INFO L175 Difference]: Start difference. First operand has 259 places, 247 transitions, 3073 flow. Second operand 10 states and 127 transitions. [2024-06-20 16:40:33,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 259 transitions, 3784 flow [2024-06-20 16:40:33,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 259 transitions, 3605 flow, removed 35 selfloop flow, removed 10 redundant places. [2024-06-20 16:40:33,760 INFO L231 Difference]: Finished difference. Result has 259 places, 248 transitions, 3112 flow [2024-06-20 16:40:33,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2912, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3112, PETRI_PLACES=259, PETRI_TRANSITIONS=248} [2024-06-20 16:40:33,760 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 229 predicate places. [2024-06-20 16:40:33,760 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 248 transitions, 3112 flow [2024-06-20 16:40:33,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:33,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:40:33,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:40:33,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-20 16:40:33,761 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)] === [2024-06-20 16:40:33,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:40:33,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1230365287, now seen corresponding path program 4 times [2024-06-20 16:40:33,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:40:33,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062935624] [2024-06-20 16:40:33,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:40:33,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:40:33,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:40:35,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:40:35,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:40:35,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062935624] [2024-06-20 16:40:35,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062935624] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:40:35,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:40:35,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:40:35,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210809743] [2024-06-20 16:40:35,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:40:35,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:40:35,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:40:35,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:40:35,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:40:35,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:40:35,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 248 transitions, 3112 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:35,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:40:35,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:40:35,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:40:35,557 INFO L124 PetriNetUnfolderBase]: 492/930 cut-off events. [2024-06-20 16:40:35,557 INFO L125 PetriNetUnfolderBase]: For 87596/87596 co-relation queries the response was YES. [2024-06-20 16:40:35,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7635 conditions, 930 events. 492/930 cut-off events. For 87596/87596 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 4937 event pairs, 49 based on Foata normal form. 2/931 useless extension candidates. Maximal degree in co-relation 7519. Up to 830 conditions per place. [2024-06-20 16:40:35,565 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 237 selfloop transitions, 18 changer transitions 0/258 dead transitions. [2024-06-20 16:40:35,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 258 transitions, 3674 flow [2024-06-20 16:40:35,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:40:35,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:40:35,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-20 16:40:35,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-20 16:40:35,566 INFO L175 Difference]: Start difference. First operand has 259 places, 248 transitions, 3112 flow. Second operand 9 states and 106 transitions. [2024-06-20 16:40:35,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 258 transitions, 3674 flow [2024-06-20 16:40:35,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 258 transitions, 3509 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-20 16:40:35,729 INFO L231 Difference]: Finished difference. Result has 262 places, 249 transitions, 3022 flow [2024-06-20 16:40:35,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2947, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3022, PETRI_PLACES=262, PETRI_TRANSITIONS=249} [2024-06-20 16:40:35,730 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 232 predicate places. [2024-06-20 16:40:35,730 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 249 transitions, 3022 flow [2024-06-20 16:40:35,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:35,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:40:35,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:40:35,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-20 16:40:35,730 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)] === [2024-06-20 16:40:35,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:40:35,731 INFO L85 PathProgramCache]: Analyzing trace with hash 913535887, now seen corresponding path program 5 times [2024-06-20 16:40:35,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:40:35,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942746136] [2024-06-20 16:40:35,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:40:35,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:40:35,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:40:37,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:40:37,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:40:37,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942746136] [2024-06-20 16:40:37,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942746136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:40:37,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:40:37,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:40:37,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287159191] [2024-06-20 16:40:37,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:40:37,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:40:37,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:40:37,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:40:37,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:40:37,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:40:37,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 249 transitions, 3022 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:37,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:40:37,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:40:37,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:40:37,927 INFO L124 PetriNetUnfolderBase]: 489/925 cut-off events. [2024-06-20 16:40:37,927 INFO L125 PetriNetUnfolderBase]: For 83967/83967 co-relation queries the response was YES. [2024-06-20 16:40:37,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7336 conditions, 925 events. 489/925 cut-off events. For 83967/83967 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 4920 event pairs, 46 based on Foata normal form. 2/926 useless extension candidates. Maximal degree in co-relation 7219. Up to 811 conditions per place. [2024-06-20 16:40:37,934 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 237 selfloop transitions, 21 changer transitions 0/261 dead transitions. [2024-06-20 16:40:37,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 261 transitions, 3564 flow [2024-06-20 16:40:37,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:40:37,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:40:37,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-20 16:40:37,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-06-20 16:40:37,935 INFO L175 Difference]: Start difference. First operand has 262 places, 249 transitions, 3022 flow. Second operand 11 states and 125 transitions. [2024-06-20 16:40:37,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 261 transitions, 3564 flow [2024-06-20 16:40:38,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 261 transitions, 3501 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-20 16:40:38,090 INFO L231 Difference]: Finished difference. Result has 266 places, 249 transitions, 3005 flow [2024-06-20 16:40:38,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2959, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3005, PETRI_PLACES=266, PETRI_TRANSITIONS=249} [2024-06-20 16:40:38,090 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 236 predicate places. [2024-06-20 16:40:38,090 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 249 transitions, 3005 flow [2024-06-20 16:40:38,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:38,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:40:38,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:40:38,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-20 16:40:38,091 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)] === [2024-06-20 16:40:38,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:40:38,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1517549597, now seen corresponding path program 5 times [2024-06-20 16:40:38,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:40:38,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743832407] [2024-06-20 16:40:38,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:40:38,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:40:38,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:40:39,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:40:39,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:40:39,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743832407] [2024-06-20 16:40:39,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743832407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:40:39,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:40:39,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:40:39,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019207864] [2024-06-20 16:40:39,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:40:39,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:40:39,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:40:39,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:40:39,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:40:39,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:40:39,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 249 transitions, 3005 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:39,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:40:39,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:40:39,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:40:39,855 INFO L124 PetriNetUnfolderBase]: 492/930 cut-off events. [2024-06-20 16:40:39,855 INFO L125 PetriNetUnfolderBase]: For 82990/82990 co-relation queries the response was YES. [2024-06-20 16:40:39,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7367 conditions, 930 events. 492/930 cut-off events. For 82990/82990 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 4951 event pairs, 48 based on Foata normal form. 1/930 useless extension candidates. Maximal degree in co-relation 7249. Up to 841 conditions per place. [2024-06-20 16:40:39,867 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 240 selfloop transitions, 17 changer transitions 0/260 dead transitions. [2024-06-20 16:40:39,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 260 transitions, 3583 flow [2024-06-20 16:40:39,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:40:39,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:40:39,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-20 16:40:39,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36774193548387096 [2024-06-20 16:40:39,868 INFO L175 Difference]: Start difference. First operand has 266 places, 249 transitions, 3005 flow. Second operand 10 states and 114 transitions. [2024-06-20 16:40:39,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 260 transitions, 3583 flow [2024-06-20 16:40:40,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 260 transitions, 3482 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-20 16:40:40,038 INFO L231 Difference]: Finished difference. Result has 266 places, 251 transitions, 2991 flow [2024-06-20 16:40:40,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2904, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2991, PETRI_PLACES=266, PETRI_TRANSITIONS=251} [2024-06-20 16:40:40,038 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 236 predicate places. [2024-06-20 16:40:40,039 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 251 transitions, 2991 flow [2024-06-20 16:40:40,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:40,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:40:40,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:40:40,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-20 16:40:40,039 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)] === [2024-06-20 16:40:40,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:40:40,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1517549845, now seen corresponding path program 17 times [2024-06-20 16:40:40,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:40:40,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185352850] [2024-06-20 16:40:40,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:40:40,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:40:40,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:40:41,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:40:41,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:40:41,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185352850] [2024-06-20 16:40:41,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185352850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:40:41,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:40:41,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:40:41,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050601094] [2024-06-20 16:40:41,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:40:41,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:40:41,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:40:41,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:40:41,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:40:41,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:40:41,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 251 transitions, 2991 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:41,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:40:41,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:40:41,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:40:41,601 INFO L124 PetriNetUnfolderBase]: 499/947 cut-off events. [2024-06-20 16:40:41,602 INFO L125 PetriNetUnfolderBase]: For 88387/88387 co-relation queries the response was YES. [2024-06-20 16:40:41,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7508 conditions, 947 events. 499/947 cut-off events. For 88387/88387 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5074 event pairs, 48 based on Foata normal form. 2/948 useless extension candidates. Maximal degree in co-relation 7389. Up to 822 conditions per place. [2024-06-20 16:40:41,613 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 232 selfloop transitions, 30 changer transitions 0/265 dead transitions. [2024-06-20 16:40:41,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 265 transitions, 3825 flow [2024-06-20 16:40:41,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:40:41,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:40:41,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-20 16:40:41,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-20 16:40:41,614 INFO L175 Difference]: Start difference. First operand has 266 places, 251 transitions, 2991 flow. Second operand 10 states and 120 transitions. [2024-06-20 16:40:41,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 265 transitions, 3825 flow [2024-06-20 16:40:41,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 265 transitions, 3656 flow, removed 46 selfloop flow, removed 11 redundant places. [2024-06-20 16:40:41,819 INFO L231 Difference]: Finished difference. Result has 265 places, 255 transitions, 3034 flow [2024-06-20 16:40:41,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2828, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3034, PETRI_PLACES=265, PETRI_TRANSITIONS=255} [2024-06-20 16:40:41,820 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 235 predicate places. [2024-06-20 16:40:41,820 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 255 transitions, 3034 flow [2024-06-20 16:40:41,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:41,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:40:41,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:40:41,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-20 16:40:41,820 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)] === [2024-06-20 16:40:41,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:40:41,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1240484927, now seen corresponding path program 6 times [2024-06-20 16:40:41,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:40:41,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252105541] [2024-06-20 16:40:41,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:40:41,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:40:41,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:40:43,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:40:43,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:40:43,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252105541] [2024-06-20 16:40:43,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252105541] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:40:43,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:40:43,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:40:43,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784988145] [2024-06-20 16:40:43,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:40:43,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:40:43,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:40:43,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:40:43,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:40:43,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:40:43,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 255 transitions, 3034 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:43,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:40:43,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:40:43,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:40:43,612 INFO L124 PetriNetUnfolderBase]: 496/941 cut-off events. [2024-06-20 16:40:43,613 INFO L125 PetriNetUnfolderBase]: For 82285/82285 co-relation queries the response was YES. [2024-06-20 16:40:43,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7234 conditions, 941 events. 496/941 cut-off events. For 82285/82285 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5042 event pairs, 48 based on Foata normal form. 1/941 useless extension candidates. Maximal degree in co-relation 7117. Up to 842 conditions per place. [2024-06-20 16:40:43,620 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 241 selfloop transitions, 21 changer transitions 0/265 dead transitions. [2024-06-20 16:40:43,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 265 transitions, 3580 flow [2024-06-20 16:40:43,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:40:43,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:40:43,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-20 16:40:43,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-20 16:40:43,621 INFO L175 Difference]: Start difference. First operand has 265 places, 255 transitions, 3034 flow. Second operand 11 states and 124 transitions. [2024-06-20 16:40:43,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 265 transitions, 3580 flow [2024-06-20 16:40:43,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 265 transitions, 3451 flow, removed 53 selfloop flow, removed 6 redundant places. [2024-06-20 16:40:43,805 INFO L231 Difference]: Finished difference. Result has 270 places, 255 transitions, 2955 flow [2024-06-20 16:40:43,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2905, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2955, PETRI_PLACES=270, PETRI_TRANSITIONS=255} [2024-06-20 16:40:43,806 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 240 predicate places. [2024-06-20 16:40:43,806 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 255 transitions, 2955 flow [2024-06-20 16:40:43,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:43,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:40:43,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:40:43,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-20 16:40:43,806 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)] === [2024-06-20 16:40:43,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:40:43,807 INFO L85 PathProgramCache]: Analyzing trace with hash 2078227771, now seen corresponding path program 7 times [2024-06-20 16:40:43,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:40:43,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977225672] [2024-06-20 16:40:43,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:40:43,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:40:43,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:40:44,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:40:44,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:40:44,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977225672] [2024-06-20 16:40:44,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977225672] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:40:44,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:40:44,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:40:44,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539583139] [2024-06-20 16:40:44,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:40:44,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:40:44,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:40:44,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:40:44,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:40:44,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:40:44,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 255 transitions, 2955 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:44,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:40:44,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:40:44,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:40:45,032 INFO L124 PetriNetUnfolderBase]: 509/972 cut-off events. [2024-06-20 16:40:45,032 INFO L125 PetriNetUnfolderBase]: For 86486/86486 co-relation queries the response was YES. [2024-06-20 16:40:45,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7328 conditions, 972 events. 509/972 cut-off events. For 86486/86486 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5296 event pairs, 38 based on Foata normal form. 2/973 useless extension candidates. Maximal degree in co-relation 7209. Up to 826 conditions per place. [2024-06-20 16:40:45,045 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 248 selfloop transitions, 27 changer transitions 0/278 dead transitions. [2024-06-20 16:40:45,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 278 transitions, 3617 flow [2024-06-20 16:40:45,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:40:45,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:40:45,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-20 16:40:45,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-20 16:40:45,047 INFO L175 Difference]: Start difference. First operand has 270 places, 255 transitions, 2955 flow. Second operand 10 states and 125 transitions. [2024-06-20 16:40:45,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 278 transitions, 3617 flow [2024-06-20 16:40:45,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 278 transitions, 3536 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-20 16:40:45,279 INFO L231 Difference]: Finished difference. Result has 270 places, 260 transitions, 3016 flow [2024-06-20 16:40:45,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2874, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3016, PETRI_PLACES=270, PETRI_TRANSITIONS=260} [2024-06-20 16:40:45,279 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 240 predicate places. [2024-06-20 16:40:45,279 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 260 transitions, 3016 flow [2024-06-20 16:40:45,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:45,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:40:45,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:40:45,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-20 16:40:45,280 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)] === [2024-06-20 16:40:45,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:40:45,280 INFO L85 PathProgramCache]: Analyzing trace with hash 554286359, now seen corresponding path program 8 times [2024-06-20 16:40:45,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:40:45,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535605852] [2024-06-20 16:40:45,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:40:45,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:40:45,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:40:46,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:40:46,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:40:46,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535605852] [2024-06-20 16:40:46,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535605852] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:40:46,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:40:46,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:40:46,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503191558] [2024-06-20 16:40:46,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:40:46,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:40:46,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:40:46,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:40:46,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:40:46,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:40:46,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 260 transitions, 3016 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:46,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:40:46,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:40:46,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:40:46,480 INFO L124 PetriNetUnfolderBase]: 518/989 cut-off events. [2024-06-20 16:40:46,481 INFO L125 PetriNetUnfolderBase]: For 86062/86062 co-relation queries the response was YES. [2024-06-20 16:40:46,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7481 conditions, 989 events. 518/989 cut-off events. For 86062/86062 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5442 event pairs, 13 based on Foata normal form. 2/990 useless extension candidates. Maximal degree in co-relation 7359. Up to 800 conditions per place. [2024-06-20 16:40:46,488 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 245 selfloop transitions, 33 changer transitions 0/281 dead transitions. [2024-06-20 16:40:46,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 281 transitions, 3660 flow [2024-06-20 16:40:46,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:40:46,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:40:46,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-20 16:40:46,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-20 16:40:46,489 INFO L175 Difference]: Start difference. First operand has 270 places, 260 transitions, 3016 flow. Second operand 10 states and 123 transitions. [2024-06-20 16:40:46,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 281 transitions, 3660 flow [2024-06-20 16:40:46,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 281 transitions, 3601 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-20 16:40:46,686 INFO L231 Difference]: Finished difference. Result has 276 places, 262 transitions, 3069 flow [2024-06-20 16:40:46,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2957, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3069, PETRI_PLACES=276, PETRI_TRANSITIONS=262} [2024-06-20 16:40:46,687 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 246 predicate places. [2024-06-20 16:40:46,687 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 262 transitions, 3069 flow [2024-06-20 16:40:46,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:46,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:40:46,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:40:46,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-20 16:40:46,688 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)] === [2024-06-20 16:40:46,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:40:46,688 INFO L85 PathProgramCache]: Analyzing trace with hash -374043471, now seen corresponding path program 9 times [2024-06-20 16:40:46,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:40:46,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941250797] [2024-06-20 16:40:46,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:40:46,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:40:46,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:40:47,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:40:47,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:40:47,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941250797] [2024-06-20 16:40:47,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941250797] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:40:47,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:40:47,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:40:47,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524822299] [2024-06-20 16:40:47,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:40:47,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:40:47,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:40:47,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:40:47,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:40:47,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:40:47,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 262 transitions, 3069 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:47,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:40:47,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:40:47,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:40:47,866 INFO L124 PetriNetUnfolderBase]: 515/983 cut-off events. [2024-06-20 16:40:47,867 INFO L125 PetriNetUnfolderBase]: For 83023/83023 co-relation queries the response was YES. [2024-06-20 16:40:47,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7304 conditions, 983 events. 515/983 cut-off events. For 83023/83023 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5390 event pairs, 44 based on Foata normal form. 2/984 useless extension candidates. Maximal degree in co-relation 7181. Up to 851 conditions per place. [2024-06-20 16:40:47,875 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 254 selfloop transitions, 22 changer transitions 0/279 dead transitions. [2024-06-20 16:40:47,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 279 transitions, 3667 flow [2024-06-20 16:40:47,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:40:47,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:40:47,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-20 16:40:47,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-20 16:40:47,876 INFO L175 Difference]: Start difference. First operand has 276 places, 262 transitions, 3069 flow. Second operand 10 states and 124 transitions. [2024-06-20 16:40:47,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 279 transitions, 3667 flow [2024-06-20 16:40:48,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 279 transitions, 3561 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-20 16:40:48,104 INFO L231 Difference]: Finished difference. Result has 278 places, 262 transitions, 3011 flow [2024-06-20 16:40:48,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2963, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3011, PETRI_PLACES=278, PETRI_TRANSITIONS=262} [2024-06-20 16:40:48,105 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 248 predicate places. [2024-06-20 16:40:48,105 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 262 transitions, 3011 flow [2024-06-20 16:40:48,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:48,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:40:48,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:40:48,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-20 16:40:48,105 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)] === [2024-06-20 16:40:48,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:40:48,106 INFO L85 PathProgramCache]: Analyzing trace with hash 252352440, now seen corresponding path program 1 times [2024-06-20 16:40:48,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:40:48,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439225421] [2024-06-20 16:40:48,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:40:48,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:40:48,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:40:49,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:40:49,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:40:49,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439225421] [2024-06-20 16:40:49,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439225421] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:40:49,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:40:49,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:40:49,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590015212] [2024-06-20 16:40:49,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:40:49,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:40:49,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:40:49,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:40:49,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:40:49,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:40:49,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 262 transitions, 3011 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:49,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:40:49,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:40:49,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:40:49,877 INFO L124 PetriNetUnfolderBase]: 519/992 cut-off events. [2024-06-20 16:40:49,877 INFO L125 PetriNetUnfolderBase]: For 84779/84779 co-relation queries the response was YES. [2024-06-20 16:40:49,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7296 conditions, 992 events. 519/992 cut-off events. For 84779/84779 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5460 event pairs, 46 based on Foata normal form. 2/993 useless extension candidates. Maximal degree in co-relation 7173. Up to 848 conditions per place. [2024-06-20 16:40:49,890 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 245 selfloop transitions, 31 changer transitions 0/279 dead transitions. [2024-06-20 16:40:49,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 279 transitions, 3633 flow [2024-06-20 16:40:49,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:40:49,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:40:49,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-20 16:40:49,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-20 16:40:49,891 INFO L175 Difference]: Start difference. First operand has 278 places, 262 transitions, 3011 flow. Second operand 10 states and 123 transitions. [2024-06-20 16:40:49,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 279 transitions, 3633 flow [2024-06-20 16:40:50,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 279 transitions, 3518 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-06-20 16:40:50,101 INFO L231 Difference]: Finished difference. Result has 278 places, 263 transitions, 2994 flow [2024-06-20 16:40:50,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2896, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2994, PETRI_PLACES=278, PETRI_TRANSITIONS=263} [2024-06-20 16:40:50,102 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 248 predicate places. [2024-06-20 16:40:50,102 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 263 transitions, 2994 flow [2024-06-20 16:40:50,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:50,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:40:50,102 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:40:50,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-20 16:40:50,103 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)] === [2024-06-20 16:40:50,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:40:50,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1996088254, now seen corresponding path program 2 times [2024-06-20 16:40:50,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:40:50,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981616391] [2024-06-20 16:40:50,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:40:50,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:40:50,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:40:51,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:40:51,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:40:51,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981616391] [2024-06-20 16:40:51,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981616391] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:40:51,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:40:51,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:40:51,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763608402] [2024-06-20 16:40:51,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:40:51,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:40:51,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:40:51,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:40:51,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:40:51,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:40:51,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 263 transitions, 2994 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:51,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:40:51,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:40:51,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:40:51,921 INFO L124 PetriNetUnfolderBase]: 523/1000 cut-off events. [2024-06-20 16:40:51,921 INFO L125 PetriNetUnfolderBase]: For 85743/85743 co-relation queries the response was YES. [2024-06-20 16:40:51,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7311 conditions, 1000 events. 523/1000 cut-off events. For 85743/85743 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5516 event pairs, 44 based on Foata normal form. 2/1001 useless extension candidates. Maximal degree in co-relation 7190. Up to 851 conditions per place. [2024-06-20 16:40:51,930 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 248 selfloop transitions, 30 changer transitions 0/281 dead transitions. [2024-06-20 16:40:51,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 281 transitions, 3624 flow [2024-06-20 16:40:51,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:40:51,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:40:51,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-20 16:40:51,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-20 16:40:51,931 INFO L175 Difference]: Start difference. First operand has 278 places, 263 transitions, 2994 flow. Second operand 10 states and 123 transitions. [2024-06-20 16:40:51,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 281 transitions, 3624 flow [2024-06-20 16:40:52,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 281 transitions, 3536 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-20 16:40:52,147 INFO L231 Difference]: Finished difference. Result has 280 places, 264 transitions, 3004 flow [2024-06-20 16:40:52,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2906, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3004, PETRI_PLACES=280, PETRI_TRANSITIONS=264} [2024-06-20 16:40:52,147 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 250 predicate places. [2024-06-20 16:40:52,147 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 264 transitions, 3004 flow [2024-06-20 16:40:52,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:52,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:40:52,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:40:52,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-20 16:40:52,148 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)] === [2024-06-20 16:40:52,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:40:52,149 INFO L85 PathProgramCache]: Analyzing trace with hash -2041265554, now seen corresponding path program 3 times [2024-06-20 16:40:52,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:40:52,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806172789] [2024-06-20 16:40:52,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:40:52,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:40:52,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:40:53,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:40:53,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:40:53,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806172789] [2024-06-20 16:40:53,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806172789] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:40:53,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:40:53,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:40:53,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642441048] [2024-06-20 16:40:53,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:40:53,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:40:53,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:40:53,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:40:53,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:40:53,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:40:53,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 264 transitions, 3004 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:53,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:40:53,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:40:53,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:40:53,689 INFO L124 PetriNetUnfolderBase]: 527/1008 cut-off events. [2024-06-20 16:40:53,689 INFO L125 PetriNetUnfolderBase]: For 87794/87794 co-relation queries the response was YES. [2024-06-20 16:40:53,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7371 conditions, 1008 events. 527/1008 cut-off events. For 87794/87794 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 5566 event pairs, 18 based on Foata normal form. 2/1009 useless extension candidates. Maximal degree in co-relation 7249. Up to 763 conditions per place. [2024-06-20 16:40:53,697 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 243 selfloop transitions, 37 changer transitions 0/283 dead transitions. [2024-06-20 16:40:53,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 283 transitions, 3642 flow [2024-06-20 16:40:53,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:40:53,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:40:53,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-20 16:40:53,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-20 16:40:53,698 INFO L175 Difference]: Start difference. First operand has 280 places, 264 transitions, 3004 flow. Second operand 10 states and 122 transitions. [2024-06-20 16:40:53,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 283 transitions, 3642 flow [2024-06-20 16:40:53,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 283 transitions, 3554 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-20 16:40:53,925 INFO L231 Difference]: Finished difference. Result has 282 places, 265 transitions, 3034 flow [2024-06-20 16:40:53,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2916, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3034, PETRI_PLACES=282, PETRI_TRANSITIONS=265} [2024-06-20 16:40:53,925 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 252 predicate places. [2024-06-20 16:40:53,926 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 265 transitions, 3034 flow [2024-06-20 16:40:53,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:53,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:40:53,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:40:53,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-20 16:40:53,926 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)] === [2024-06-20 16:40:53,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:40:53,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1621474346, now seen corresponding path program 4 times [2024-06-20 16:40:53,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:40:53,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941813999] [2024-06-20 16:40:53,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:40:53,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:40:53,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:40:55,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:40:55,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:40:55,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941813999] [2024-06-20 16:40:55,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941813999] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:40:55,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:40:55,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:40:55,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921148872] [2024-06-20 16:40:55,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:40:55,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:40:55,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:40:55,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:40:55,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:40:55,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:40:55,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 265 transitions, 3034 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:55,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:40:55,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:40:55,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:40:55,582 INFO L124 PetriNetUnfolderBase]: 531/1015 cut-off events. [2024-06-20 16:40:55,582 INFO L125 PetriNetUnfolderBase]: For 91003/91003 co-relation queries the response was YES. [2024-06-20 16:40:55,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7464 conditions, 1015 events. 531/1015 cut-off events. For 91003/91003 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 5645 event pairs, 54 based on Foata normal form. 2/1016 useless extension candidates. Maximal degree in co-relation 7341. Up to 886 conditions per place. [2024-06-20 16:40:55,591 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 251 selfloop transitions, 27 changer transitions 0/281 dead transitions. [2024-06-20 16:40:55,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 281 transitions, 3668 flow [2024-06-20 16:40:55,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:40:55,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:40:55,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-20 16:40:55,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-20 16:40:55,592 INFO L175 Difference]: Start difference. First operand has 282 places, 265 transitions, 3034 flow. Second operand 10 states and 120 transitions. [2024-06-20 16:40:55,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 281 transitions, 3668 flow [2024-06-20 16:40:55,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 281 transitions, 3568 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-20 16:40:55,844 INFO L231 Difference]: Finished difference. Result has 285 places, 267 transitions, 3044 flow [2024-06-20 16:40:55,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2934, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3044, PETRI_PLACES=285, PETRI_TRANSITIONS=267} [2024-06-20 16:40:55,845 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 255 predicate places. [2024-06-20 16:40:55,845 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 267 transitions, 3044 flow [2024-06-20 16:40:55,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:55,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:40:55,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:40:55,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-20 16:40:55,845 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)] === [2024-06-20 16:40:55,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:40:55,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1621326476, now seen corresponding path program 5 times [2024-06-20 16:40:55,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:40:55,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764924254] [2024-06-20 16:40:55,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:40:55,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:40:55,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:40:56,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:40:56,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:40:56,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764924254] [2024-06-20 16:40:56,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764924254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:40:56,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:40:56,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:40:56,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097030696] [2024-06-20 16:40:56,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:40:56,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:40:56,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:40:56,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:40:56,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:40:57,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:40:57,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 267 transitions, 3044 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:57,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:40:57,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:40:57,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:40:57,454 INFO L124 PetriNetUnfolderBase]: 535/1025 cut-off events. [2024-06-20 16:40:57,454 INFO L125 PetriNetUnfolderBase]: For 93235/93235 co-relation queries the response was YES. [2024-06-20 16:40:57,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7509 conditions, 1025 events. 535/1025 cut-off events. For 93235/93235 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 5743 event pairs, 52 based on Foata normal form. 2/1026 useless extension candidates. Maximal degree in co-relation 7384. Up to 889 conditions per place. [2024-06-20 16:40:57,464 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 254 selfloop transitions, 26 changer transitions 0/283 dead transitions. [2024-06-20 16:40:57,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 283 transitions, 3678 flow [2024-06-20 16:40:57,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:40:57,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:40:57,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-20 16:40:57,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-20 16:40:57,465 INFO L175 Difference]: Start difference. First operand has 285 places, 267 transitions, 3044 flow. Second operand 10 states and 120 transitions. [2024-06-20 16:40:57,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 283 transitions, 3678 flow [2024-06-20 16:40:57,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 283 transitions, 3596 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-20 16:40:57,730 INFO L231 Difference]: Finished difference. Result has 288 places, 268 transitions, 3058 flow [2024-06-20 16:40:57,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2962, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3058, PETRI_PLACES=288, PETRI_TRANSITIONS=268} [2024-06-20 16:40:57,731 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 258 predicate places. [2024-06-20 16:40:57,731 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 268 transitions, 3058 flow [2024-06-20 16:40:57,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:57,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:40:57,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:40:57,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-20 16:40:57,731 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)] === [2024-06-20 16:40:57,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:40:57,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1626836726, now seen corresponding path program 6 times [2024-06-20 16:40:57,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:40:57,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251372972] [2024-06-20 16:40:57,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:40:57,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:40:57,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:40:58,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:40:58,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:40:58,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251372972] [2024-06-20 16:40:58,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251372972] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:40:58,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:40:58,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:40:58,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902215914] [2024-06-20 16:40:58,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:40:58,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:40:58,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:40:58,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:40:58,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:40:59,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:40:59,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 268 transitions, 3058 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:59,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:40:59,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:40:59,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:40:59,481 INFO L124 PetriNetUnfolderBase]: 539/1033 cut-off events. [2024-06-20 16:40:59,481 INFO L125 PetriNetUnfolderBase]: For 95567/95567 co-relation queries the response was YES. [2024-06-20 16:40:59,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7573 conditions, 1033 events. 539/1033 cut-off events. For 95567/95567 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 5818 event pairs, 54 based on Foata normal form. 2/1034 useless extension candidates. Maximal degree in co-relation 7447. Up to 894 conditions per place. [2024-06-20 16:40:59,491 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 250 selfloop transitions, 30 changer transitions 0/283 dead transitions. [2024-06-20 16:40:59,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 283 transitions, 3692 flow [2024-06-20 16:40:59,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:40:59,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:40:59,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-20 16:40:59,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-20 16:40:59,492 INFO L175 Difference]: Start difference. First operand has 288 places, 268 transitions, 3058 flow. Second operand 10 states and 122 transitions. [2024-06-20 16:40:59,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 283 transitions, 3692 flow [2024-06-20 16:40:59,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 283 transitions, 3606 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-20 16:40:59,882 INFO L231 Difference]: Finished difference. Result has 290 places, 269 transitions, 3078 flow [2024-06-20 16:40:59,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2972, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3078, PETRI_PLACES=290, PETRI_TRANSITIONS=269} [2024-06-20 16:40:59,882 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 260 predicate places. [2024-06-20 16:40:59,883 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 269 transitions, 3078 flow [2024-06-20 16:40:59,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:59,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:40:59,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:40:59,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-20 16:40:59,883 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)] === [2024-06-20 16:40:59,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:40:59,883 INFO L85 PathProgramCache]: Analyzing trace with hash -542248311, now seen corresponding path program 1 times [2024-06-20 16:40:59,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:40:59,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751882025] [2024-06-20 16:40:59,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:40:59,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:40:59,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:41:00,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:41:00,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:41:00,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751882025] [2024-06-20 16:41:00,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751882025] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:41:00,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:41:00,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:41:00,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850709091] [2024-06-20 16:41:00,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:41:00,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:41:00,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:41:00,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:41:00,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:41:01,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:41:01,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 269 transitions, 3078 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) [2024-06-20 16:41:01,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:41:01,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:41:01,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:41:01,499 INFO L124 PetriNetUnfolderBase]: 559/1077 cut-off events. [2024-06-20 16:41:01,499 INFO L125 PetriNetUnfolderBase]: For 132468/132468 co-relation queries the response was YES. [2024-06-20 16:41:01,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7847 conditions, 1077 events. 559/1077 cut-off events. For 132468/132468 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6101 event pairs, 58 based on Foata normal form. 12/1088 useless extension candidates. Maximal degree in co-relation 7720. Up to 887 conditions per place. [2024-06-20 16:41:01,509 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 248 selfloop transitions, 30 changer transitions 7/288 dead transitions. [2024-06-20 16:41:01,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 288 transitions, 3800 flow [2024-06-20 16:41:01,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:41:01,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:41:01,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-20 16:41:01,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4129032258064516 [2024-06-20 16:41:01,510 INFO L175 Difference]: Start difference. First operand has 290 places, 269 transitions, 3078 flow. Second operand 10 states and 128 transitions. [2024-06-20 16:41:01,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 288 transitions, 3800 flow [2024-06-20 16:41:01,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 288 transitions, 3704 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-20 16:41:01,792 INFO L231 Difference]: Finished difference. Result has 292 places, 267 transitions, 3037 flow [2024-06-20 16:41:01,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2982, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3037, PETRI_PLACES=292, PETRI_TRANSITIONS=267} [2024-06-20 16:41:01,792 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 262 predicate places. [2024-06-20 16:41:01,792 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 267 transitions, 3037 flow [2024-06-20 16:41:01,793 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) [2024-06-20 16:41:01,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:41:01,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:41:01,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-20 16:41:01,793 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)] === [2024-06-20 16:41:01,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:41:01,793 INFO L85 PathProgramCache]: Analyzing trace with hash -542248590, now seen corresponding path program 1 times [2024-06-20 16:41:01,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:41:01,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547312605] [2024-06-20 16:41:01,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:41:01,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:41:01,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:41:03,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:41:03,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:41:03,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547312605] [2024-06-20 16:41:03,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547312605] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:41:03,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:41:03,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:41:03,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751300549] [2024-06-20 16:41:03,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:41:03,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:41:03,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:41:03,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:41:03,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:41:03,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:41:03,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 267 transitions, 3037 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) [2024-06-20 16:41:03,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:41:03,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:41:03,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:41:03,541 INFO L124 PetriNetUnfolderBase]: 538/1034 cut-off events. [2024-06-20 16:41:03,541 INFO L125 PetriNetUnfolderBase]: For 95619/95619 co-relation queries the response was YES. [2024-06-20 16:41:03,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7561 conditions, 1034 events. 538/1034 cut-off events. For 95619/95619 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 5821 event pairs, 54 based on Foata normal form. 1/1034 useless extension candidates. Maximal degree in co-relation 7433. Up to 880 conditions per place. [2024-06-20 16:41:03,551 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 243 selfloop transitions, 37 changer transitions 0/283 dead transitions. [2024-06-20 16:41:03,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 283 transitions, 3867 flow [2024-06-20 16:41:03,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:41:03,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:41:03,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-20 16:41:03,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2024-06-20 16:41:03,552 INFO L175 Difference]: Start difference. First operand has 292 places, 267 transitions, 3037 flow. Second operand 10 states and 126 transitions. [2024-06-20 16:41:03,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 283 transitions, 3867 flow [2024-06-20 16:41:03,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 283 transitions, 3785 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-20 16:41:03,827 INFO L231 Difference]: Finished difference. Result has 294 places, 269 transitions, 3101 flow [2024-06-20 16:41:03,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2955, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3101, PETRI_PLACES=294, PETRI_TRANSITIONS=269} [2024-06-20 16:41:03,828 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 264 predicate places. [2024-06-20 16:41:03,828 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 269 transitions, 3101 flow [2024-06-20 16:41:03,828 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) [2024-06-20 16:41:03,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:41:03,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:41:03,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-20 16:41:03,829 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)] === [2024-06-20 16:41:03,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:41:03,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1627044488, now seen corresponding path program 2 times [2024-06-20 16:41:03,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:41:03,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167226175] [2024-06-20 16:41:03,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:41:03,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:41:03,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:41:05,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:41:05,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:41:05,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167226175] [2024-06-20 16:41:05,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167226175] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:41:05,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:41:05,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:41:05,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320157752] [2024-06-20 16:41:05,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:41:05,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:41:05,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:41:05,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:41:05,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:41:05,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:41:05,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 269 transitions, 3101 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:05,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:41:05,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:41:05,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:41:06,276 INFO L124 PetriNetUnfolderBase]: 541/1039 cut-off events. [2024-06-20 16:41:06,276 INFO L125 PetriNetUnfolderBase]: For 98031/98031 co-relation queries the response was YES. [2024-06-20 16:41:06,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7633 conditions, 1039 events. 541/1039 cut-off events. For 98031/98031 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 5863 event pairs, 52 based on Foata normal form. 1/1039 useless extension candidates. Maximal degree in co-relation 7504. Up to 858 conditions per place. [2024-06-20 16:41:06,286 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 238 selfloop transitions, 46 changer transitions 0/287 dead transitions. [2024-06-20 16:41:06,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 287 transitions, 3795 flow [2024-06-20 16:41:06,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:41:06,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:41:06,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-20 16:41:06,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-20 16:41:06,287 INFO L175 Difference]: Start difference. First operand has 294 places, 269 transitions, 3101 flow. Second operand 11 states and 134 transitions. [2024-06-20 16:41:06,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 287 transitions, 3795 flow [2024-06-20 16:41:06,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 287 transitions, 3576 flow, removed 31 selfloop flow, removed 11 redundant places. [2024-06-20 16:41:06,540 INFO L231 Difference]: Finished difference. Result has 295 places, 273 transitions, 3088 flow [2024-06-20 16:41:06,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2892, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3088, PETRI_PLACES=295, PETRI_TRANSITIONS=273} [2024-06-20 16:41:06,541 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 265 predicate places. [2024-06-20 16:41:06,541 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 273 transitions, 3088 flow [2024-06-20 16:41:06,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:06,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:41:06,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:41:06,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-20 16:41:06,542 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)] === [2024-06-20 16:41:06,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:41:06,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1852043902, now seen corresponding path program 3 times [2024-06-20 16:41:06,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:41:06,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733108259] [2024-06-20 16:41:06,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:41:06,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:41:06,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:41:08,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:41:08,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:41:08,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733108259] [2024-06-20 16:41:08,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733108259] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:41:08,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:41:08,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:41:08,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687226513] [2024-06-20 16:41:08,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:41:08,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:41:08,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:41:08,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:41:08,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:41:08,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:41:08,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 273 transitions, 3088 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:08,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:41:08,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:41:08,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:41:08,828 INFO L124 PetriNetUnfolderBase]: 539/1036 cut-off events. [2024-06-20 16:41:08,828 INFO L125 PetriNetUnfolderBase]: For 93360/93360 co-relation queries the response was YES. [2024-06-20 16:41:08,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7413 conditions, 1036 events. 539/1036 cut-off events. For 93360/93360 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 5862 event pairs, 50 based on Foata normal form. 1/1036 useless extension candidates. Maximal degree in co-relation 7284. Up to 855 conditions per place. [2024-06-20 16:41:08,843 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 239 selfloop transitions, 45 changer transitions 0/287 dead transitions. [2024-06-20 16:41:08,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 287 transitions, 3690 flow [2024-06-20 16:41:08,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:41:08,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:41:08,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-20 16:41:08,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-20 16:41:08,845 INFO L175 Difference]: Start difference. First operand has 295 places, 273 transitions, 3088 flow. Second operand 11 states and 135 transitions. [2024-06-20 16:41:08,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 287 transitions, 3690 flow [2024-06-20 16:41:09,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 287 transitions, 3504 flow, removed 53 selfloop flow, removed 8 redundant places. [2024-06-20 16:41:09,074 INFO L231 Difference]: Finished difference. Result has 298 places, 273 transitions, 2997 flow [2024-06-20 16:41:09,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2902, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2997, PETRI_PLACES=298, PETRI_TRANSITIONS=273} [2024-06-20 16:41:09,074 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 268 predicate places. [2024-06-20 16:41:09,075 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 273 transitions, 2997 flow [2024-06-20 16:41:09,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:09,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:41:09,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:41:09,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-20 16:41:09,075 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)] === [2024-06-20 16:41:09,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:41:09,075 INFO L85 PathProgramCache]: Analyzing trace with hash -799830560, now seen corresponding path program 7 times [2024-06-20 16:41:09,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:41:09,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470371856] [2024-06-20 16:41:09,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:41:09,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:41:09,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:41:10,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:41:10,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:41:10,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470371856] [2024-06-20 16:41:10,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470371856] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:41:10,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:41:10,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:41:10,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460786646] [2024-06-20 16:41:10,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:41:10,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:41:10,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:41:10,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:41:10,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:41:10,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:41:10,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 273 transitions, 2997 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:10,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:41:10,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:41:10,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:41:10,843 INFO L124 PetriNetUnfolderBase]: 543/1045 cut-off events. [2024-06-20 16:41:10,844 INFO L125 PetriNetUnfolderBase]: For 99136/99136 co-relation queries the response was YES. [2024-06-20 16:41:10,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7437 conditions, 1045 events. 543/1045 cut-off events. For 99136/99136 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 5910 event pairs, 52 based on Foata normal form. 2/1046 useless extension candidates. Maximal degree in co-relation 7307. Up to 876 conditions per place. [2024-06-20 16:41:10,853 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 244 selfloop transitions, 39 changer transitions 0/286 dead transitions. [2024-06-20 16:41:10,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 286 transitions, 3633 flow [2024-06-20 16:41:10,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:41:10,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:41:10,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-20 16:41:10,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-20 16:41:10,854 INFO L175 Difference]: Start difference. First operand has 298 places, 273 transitions, 2997 flow. Second operand 10 states and 122 transitions. [2024-06-20 16:41:10,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 286 transitions, 3633 flow [2024-06-20 16:41:11,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 286 transitions, 3535 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-20 16:41:11,072 INFO L231 Difference]: Finished difference. Result has 299 places, 274 transitions, 3025 flow [2024-06-20 16:41:11,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2899, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3025, PETRI_PLACES=299, PETRI_TRANSITIONS=274} [2024-06-20 16:41:11,073 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 269 predicate places. [2024-06-20 16:41:11,073 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 274 transitions, 3025 flow [2024-06-20 16:41:11,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:11,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:41:11,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:41:11,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-20 16:41:11,074 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)] === [2024-06-20 16:41:11,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:41:11,074 INFO L85 PathProgramCache]: Analyzing trace with hash 292019686, now seen corresponding path program 8 times [2024-06-20 16:41:11,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:41:11,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557677495] [2024-06-20 16:41:11,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:41:11,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:41:11,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:41:12,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:41:12,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:41:12,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557677495] [2024-06-20 16:41:12,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557677495] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:41:12,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:41:12,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:41:12,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028321001] [2024-06-20 16:41:12,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:41:12,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:41:12,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:41:12,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:41:12,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:41:12,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:41:12,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 274 transitions, 3025 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:12,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:41:12,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:41:12,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:41:12,723 INFO L124 PetriNetUnfolderBase]: 547/1053 cut-off events. [2024-06-20 16:41:12,723 INFO L125 PetriNetUnfolderBase]: For 102086/102086 co-relation queries the response was YES. [2024-06-20 16:41:12,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7553 conditions, 1053 events. 547/1053 cut-off events. For 102086/102086 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 5976 event pairs, 52 based on Foata normal form. 2/1054 useless extension candidates. Maximal degree in co-relation 7422. Up to 882 conditions per place. [2024-06-20 16:41:12,734 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 249 selfloop transitions, 36 changer transitions 0/288 dead transitions. [2024-06-20 16:41:12,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 288 transitions, 3676 flow [2024-06-20 16:41:12,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:41:12,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:41:12,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-20 16:41:12,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-20 16:41:12,735 INFO L175 Difference]: Start difference. First operand has 299 places, 274 transitions, 3025 flow. Second operand 10 states and 121 transitions. [2024-06-20 16:41:12,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 288 transitions, 3676 flow [2024-06-20 16:41:12,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 288 transitions, 3558 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-20 16:41:12,976 INFO L231 Difference]: Finished difference. Result has 302 places, 276 transitions, 3043 flow [2024-06-20 16:41:12,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2909, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3043, PETRI_PLACES=302, PETRI_TRANSITIONS=276} [2024-06-20 16:41:12,976 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 272 predicate places. [2024-06-20 16:41:12,977 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 276 transitions, 3043 flow [2024-06-20 16:41:12,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:12,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:41:12,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:41:12,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-20 16:41:12,977 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)] === [2024-06-20 16:41:12,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:41:12,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1534510022, now seen corresponding path program 9 times [2024-06-20 16:41:12,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:41:12,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930329651] [2024-06-20 16:41:12,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:41:12,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:41:12,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:41:14,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:41:14,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:41:14,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930329651] [2024-06-20 16:41:14,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930329651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:41:14,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:41:14,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:41:14,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818744012] [2024-06-20 16:41:14,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:41:14,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:41:14,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:41:14,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:41:14,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:41:14,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:41:14,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 276 transitions, 3043 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:14,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:41:14,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:41:14,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:41:14,714 INFO L124 PetriNetUnfolderBase]: 551/1061 cut-off events. [2024-06-20 16:41:14,714 INFO L125 PetriNetUnfolderBase]: For 105643/105643 co-relation queries the response was YES. [2024-06-20 16:41:14,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7612 conditions, 1061 events. 551/1061 cut-off events. For 105643/105643 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 6033 event pairs, 46 based on Foata normal form. 2/1062 useless extension candidates. Maximal degree in co-relation 7479. Up to 915 conditions per place. [2024-06-20 16:41:14,726 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 259 selfloop transitions, 28 changer transitions 0/290 dead transitions. [2024-06-20 16:41:14,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 290 transitions, 3693 flow [2024-06-20 16:41:14,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:41:14,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:41:14,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-20 16:41:14,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-20 16:41:14,727 INFO L175 Difference]: Start difference. First operand has 302 places, 276 transitions, 3043 flow. Second operand 10 states and 120 transitions. [2024-06-20 16:41:14,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 290 transitions, 3693 flow [2024-06-20 16:41:14,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 290 transitions, 3584 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-20 16:41:14,991 INFO L231 Difference]: Finished difference. Result has 305 places, 277 transitions, 3042 flow [2024-06-20 16:41:14,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2934, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3042, PETRI_PLACES=305, PETRI_TRANSITIONS=277} [2024-06-20 16:41:14,992 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 275 predicate places. [2024-06-20 16:41:14,992 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 277 transitions, 3042 flow [2024-06-20 16:41:14,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:14,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:41:14,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:41:14,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-20 16:41:14,992 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)] === [2024-06-20 16:41:14,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:41:14,993 INFO L85 PathProgramCache]: Analyzing trace with hash 297382066, now seen corresponding path program 10 times [2024-06-20 16:41:14,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:41:14,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818386753] [2024-06-20 16:41:14,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:41:14,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:41:15,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:41:16,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:41:16,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:41:16,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818386753] [2024-06-20 16:41:16,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818386753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:41:16,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:41:16,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:41:16,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087539169] [2024-06-20 16:41:16,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:41:16,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:41:16,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:41:16,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:41:16,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:41:16,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:41:16,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 277 transitions, 3042 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:16,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:41:16,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:41:16,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:41:16,761 INFO L124 PetriNetUnfolderBase]: 555/1069 cut-off events. [2024-06-20 16:41:16,761 INFO L125 PetriNetUnfolderBase]: For 106847/106847 co-relation queries the response was YES. [2024-06-20 16:41:16,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7658 conditions, 1069 events. 555/1069 cut-off events. For 106847/106847 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 6111 event pairs, 54 based on Foata normal form. 2/1070 useless extension candidates. Maximal degree in co-relation 7524. Up to 922 conditions per place. [2024-06-20 16:41:16,773 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 255 selfloop transitions, 32 changer transitions 0/290 dead transitions. [2024-06-20 16:41:16,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 290 transitions, 3692 flow [2024-06-20 16:41:16,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:41:16,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:41:16,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-20 16:41:16,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-20 16:41:16,774 INFO L175 Difference]: Start difference. First operand has 305 places, 277 transitions, 3042 flow. Second operand 10 states and 122 transitions. [2024-06-20 16:41:16,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 290 transitions, 3692 flow [2024-06-20 16:41:17,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 290 transitions, 3594 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-20 16:41:17,015 INFO L231 Difference]: Finished difference. Result has 307 places, 278 transitions, 3062 flow [2024-06-20 16:41:17,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2944, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3062, PETRI_PLACES=307, PETRI_TRANSITIONS=278} [2024-06-20 16:41:17,015 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 277 predicate places. [2024-06-20 16:41:17,016 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 278 transitions, 3062 flow [2024-06-20 16:41:17,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:17,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:41:17,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:41:17,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-20 16:41:17,016 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)] === [2024-06-20 16:41:17,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:41:17,016 INFO L85 PathProgramCache]: Analyzing trace with hash 498679078, now seen corresponding path program 4 times [2024-06-20 16:41:17,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:41:17,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943714987] [2024-06-20 16:41:17,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:41:17,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:41:17,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:41:18,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:41:18,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:41:18,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943714987] [2024-06-20 16:41:18,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943714987] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:41:18,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:41:18,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:41:18,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564297125] [2024-06-20 16:41:18,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:41:18,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:41:18,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:41:18,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:41:18,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:41:18,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:41:18,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 278 transitions, 3062 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:18,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:41:18,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:41:18,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:41:19,196 INFO L124 PetriNetUnfolderBase]: 553/1066 cut-off events. [2024-06-20 16:41:19,196 INFO L125 PetriNetUnfolderBase]: For 99787/99787 co-relation queries the response was YES. [2024-06-20 16:41:19,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7489 conditions, 1066 events. 553/1066 cut-off events. For 99787/99787 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 6083 event pairs, 54 based on Foata normal form. 1/1066 useless extension candidates. Maximal degree in co-relation 7354. Up to 861 conditions per place. [2024-06-20 16:41:19,207 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 228 selfloop transitions, 61 changer transitions 0/292 dead transitions. [2024-06-20 16:41:19,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 292 transitions, 3684 flow [2024-06-20 16:41:19,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:41:19,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:41:19,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-20 16:41:19,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-20 16:41:19,211 INFO L175 Difference]: Start difference. First operand has 307 places, 278 transitions, 3062 flow. Second operand 11 states and 134 transitions. [2024-06-20 16:41:19,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 292 transitions, 3684 flow [2024-06-20 16:41:19,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 292 transitions, 3530 flow, removed 46 selfloop flow, removed 8 redundant places. [2024-06-20 16:41:19,459 INFO L231 Difference]: Finished difference. Result has 310 places, 279 transitions, 3042 flow [2024-06-20 16:41:19,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2908, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3042, PETRI_PLACES=310, PETRI_TRANSITIONS=279} [2024-06-20 16:41:19,460 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 280 predicate places. [2024-06-20 16:41:19,460 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 279 transitions, 3042 flow [2024-06-20 16:41:19,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:19,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:41:19,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:41:19,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-20 16:41:19,461 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)] === [2024-06-20 16:41:19,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:41:19,461 INFO L85 PathProgramCache]: Analyzing trace with hash -993764018, now seen corresponding path program 5 times [2024-06-20 16:41:19,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:41:19,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806931479] [2024-06-20 16:41:19,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:41:19,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:41:19,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:41:21,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:41:21,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:41:21,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806931479] [2024-06-20 16:41:21,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806931479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:41:21,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:41:21,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:41:21,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480678710] [2024-06-20 16:41:21,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:41:21,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:41:21,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:41:21,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:41:21,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:41:21,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:41:21,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 279 transitions, 3042 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:21,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:41:21,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:41:21,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:41:21,730 INFO L124 PetriNetUnfolderBase]: 556/1071 cut-off events. [2024-06-20 16:41:21,731 INFO L125 PetriNetUnfolderBase]: For 100828/100828 co-relation queries the response was YES. [2024-06-20 16:41:21,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7503 conditions, 1071 events. 556/1071 cut-off events. For 100828/100828 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 6122 event pairs, 52 based on Foata normal form. 1/1071 useless extension candidates. Maximal degree in co-relation 7367. Up to 885 conditions per place. [2024-06-20 16:41:21,742 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 246 selfloop transitions, 45 changer transitions 0/294 dead transitions. [2024-06-20 16:41:21,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 294 transitions, 3723 flow [2024-06-20 16:41:21,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:41:21,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:41:21,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-20 16:41:21,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-20 16:41:21,743 INFO L175 Difference]: Start difference. First operand has 310 places, 279 transitions, 3042 flow. Second operand 11 states and 135 transitions. [2024-06-20 16:41:21,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 294 transitions, 3723 flow [2024-06-20 16:41:22,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 294 transitions, 3626 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-20 16:41:22,013 INFO L231 Difference]: Finished difference. Result has 315 places, 282 transitions, 3124 flow [2024-06-20 16:41:22,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2945, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3124, PETRI_PLACES=315, PETRI_TRANSITIONS=282} [2024-06-20 16:41:22,013 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 285 predicate places. [2024-06-20 16:41:22,014 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 282 transitions, 3124 flow [2024-06-20 16:41:22,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:22,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:41:22,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:41:22,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-20 16:41:22,014 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)] === [2024-06-20 16:41:22,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:41:22,014 INFO L85 PathProgramCache]: Analyzing trace with hash 297589828, now seen corresponding path program 6 times [2024-06-20 16:41:22,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:41:22,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011377613] [2024-06-20 16:41:22,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:41:22,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:41:22,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:41:23,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:41:23,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:41:23,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011377613] [2024-06-20 16:41:23,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011377613] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:41:23,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:41:23,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:41:23,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944575423] [2024-06-20 16:41:23,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:41:23,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:41:23,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:41:23,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:41:23,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:41:24,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:41:24,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 282 transitions, 3124 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:24,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:41:24,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:41:24,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:41:24,472 INFO L124 PetriNetUnfolderBase]: 554/1068 cut-off events. [2024-06-20 16:41:24,472 INFO L125 PetriNetUnfolderBase]: For 98608/98608 co-relation queries the response was YES. [2024-06-20 16:41:24,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7403 conditions, 1068 events. 554/1068 cut-off events. For 98608/98608 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 6121 event pairs, 54 based on Foata normal form. 1/1068 useless extension candidates. Maximal degree in co-relation 7265. Up to 912 conditions per place. [2024-06-20 16:41:24,483 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 252 selfloop transitions, 39 changer transitions 0/294 dead transitions. [2024-06-20 16:41:24,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 294 transitions, 3734 flow [2024-06-20 16:41:24,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:41:24,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:41:24,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-20 16:41:24,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-20 16:41:24,484 INFO L175 Difference]: Start difference. First operand has 315 places, 282 transitions, 3124 flow. Second operand 11 states and 133 transitions. [2024-06-20 16:41:24,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 294 transitions, 3734 flow [2024-06-20 16:41:24,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 294 transitions, 3531 flow, removed 52 selfloop flow, removed 8 redundant places. [2024-06-20 16:41:24,777 INFO L231 Difference]: Finished difference. Result has 318 places, 282 transitions, 3004 flow [2024-06-20 16:41:24,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2921, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3004, PETRI_PLACES=318, PETRI_TRANSITIONS=282} [2024-06-20 16:41:24,777 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 288 predicate places. [2024-06-20 16:41:24,777 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 282 transitions, 3004 flow [2024-06-20 16:41:24,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:24,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:41:24,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:41:24,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-20 16:41:24,778 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)] === [2024-06-20 16:41:24,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:41:24,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1828069231, now seen corresponding path program 2 times [2024-06-20 16:41:24,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:41:24,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429074274] [2024-06-20 16:41:24,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:41:24,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:41:24,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:41:25,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:41:25,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:41:25,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429074274] [2024-06-20 16:41:25,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429074274] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:41:25,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:41:25,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:41:25,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165695771] [2024-06-20 16:41:25,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:41:25,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:41:25,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:41:25,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:41:25,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:41:26,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:41:26,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 282 transitions, 3004 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:26,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:41:26,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:41:26,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:41:26,586 INFO L124 PetriNetUnfolderBase]: 570/1104 cut-off events. [2024-06-20 16:41:26,586 INFO L125 PetriNetUnfolderBase]: For 138865/138865 co-relation queries the response was YES. [2024-06-20 16:41:26,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7553 conditions, 1104 events. 570/1104 cut-off events. For 138865/138865 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 6345 event pairs, 58 based on Foata normal form. 10/1113 useless extension candidates. Maximal degree in co-relation 7414. Up to 916 conditions per place. [2024-06-20 16:41:26,596 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 257 selfloop transitions, 35 changer transitions 4/299 dead transitions. [2024-06-20 16:41:26,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 299 transitions, 3726 flow [2024-06-20 16:41:26,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:41:26,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:41:26,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-20 16:41:26,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40175953079178883 [2024-06-20 16:41:26,597 INFO L175 Difference]: Start difference. First operand has 318 places, 282 transitions, 3004 flow. Second operand 11 states and 137 transitions. [2024-06-20 16:41:26,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 299 transitions, 3726 flow [2024-06-20 16:41:26,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 299 transitions, 3613 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-20 16:41:26,915 INFO L231 Difference]: Finished difference. Result has 319 places, 282 transitions, 2987 flow [2024-06-20 16:41:26,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2891, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2987, PETRI_PLACES=319, PETRI_TRANSITIONS=282} [2024-06-20 16:41:26,915 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 289 predicate places. [2024-06-20 16:41:26,915 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 282 transitions, 2987 flow [2024-06-20 16:41:26,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:26,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:41:26,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:41:26,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-20 16:41:26,916 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)] === [2024-06-20 16:41:26,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:41:26,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1626720511, now seen corresponding path program 3 times [2024-06-20 16:41:26,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:41:26,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113752008] [2024-06-20 16:41:26,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:41:26,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:41:26,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:41:28,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:41:28,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:41:28,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113752008] [2024-06-20 16:41:28,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113752008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:41:28,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:41:28,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:41:28,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007763760] [2024-06-20 16:41:28,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:41:28,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:41:28,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:41:28,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:41:28,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:41:28,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:41:28,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 282 transitions, 2987 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:28,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:41:28,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:41:28,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:41:28,737 INFO L124 PetriNetUnfolderBase]: 571/1107 cut-off events. [2024-06-20 16:41:28,737 INFO L125 PetriNetUnfolderBase]: For 107697/107697 co-relation queries the response was YES. [2024-06-20 16:41:28,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7584 conditions, 1107 events. 571/1107 cut-off events. For 107697/107697 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 6379 event pairs, 58 based on Foata normal form. 2/1108 useless extension candidates. Maximal degree in co-relation 7444. Up to 869 conditions per place. [2024-06-20 16:41:28,749 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 225 selfloop transitions, 70 changer transitions 0/298 dead transitions. [2024-06-20 16:41:28,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 298 transitions, 3652 flow [2024-06-20 16:41:28,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:41:28,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:41:28,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-20 16:41:28,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40175953079178883 [2024-06-20 16:41:28,751 INFO L175 Difference]: Start difference. First operand has 319 places, 282 transitions, 2987 flow. Second operand 11 states and 137 transitions. [2024-06-20 16:41:28,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 298 transitions, 3652 flow [2024-06-20 16:41:29,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 298 transitions, 3548 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-20 16:41:29,048 INFO L231 Difference]: Finished difference. Result has 319 places, 285 transitions, 3074 flow [2024-06-20 16:41:29,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2883, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3074, PETRI_PLACES=319, PETRI_TRANSITIONS=285} [2024-06-20 16:41:29,049 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 289 predicate places. [2024-06-20 16:41:29,049 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 285 transitions, 3074 flow [2024-06-20 16:41:29,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:29,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:41:29,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:41:29,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-20 16:41:29,049 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)] === [2024-06-20 16:41:29,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:41:29,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1626711211, now seen corresponding path program 4 times [2024-06-20 16:41:29,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:41:29,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177935870] [2024-06-20 16:41:29,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:41:29,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:41:29,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:41:30,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:41:30,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:41:30,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177935870] [2024-06-20 16:41:30,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177935870] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:41:30,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:41:30,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:41:30,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901821445] [2024-06-20 16:41:30,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:41:30,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:41:30,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:41:30,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:41:30,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:41:30,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:41:30,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 285 transitions, 3074 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:30,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:41:30,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:41:30,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:41:31,029 INFO L124 PetriNetUnfolderBase]: 674/1300 cut-off events. [2024-06-20 16:41:31,030 INFO L125 PetriNetUnfolderBase]: For 121731/121731 co-relation queries the response was YES. [2024-06-20 16:41:31,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9081 conditions, 1300 events. 674/1300 cut-off events. For 121731/121731 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 7748 event pairs, 65 based on Foata normal form. 2/1301 useless extension candidates. Maximal degree in co-relation 8941. Up to 1052 conditions per place. [2024-06-20 16:41:31,043 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 286 selfloop transitions, 60 changer transitions 2/351 dead transitions. [2024-06-20 16:41:31,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 351 transitions, 4682 flow [2024-06-20 16:41:31,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:41:31,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:41:31,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-20 16:41:31,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40053763440860213 [2024-06-20 16:41:31,044 INFO L175 Difference]: Start difference. First operand has 319 places, 285 transitions, 3074 flow. Second operand 12 states and 149 transitions. [2024-06-20 16:41:31,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 351 transitions, 4682 flow [2024-06-20 16:41:31,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 351 transitions, 4436 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-06-20 16:41:31,379 INFO L231 Difference]: Finished difference. Result has 328 places, 329 transitions, 3696 flow [2024-06-20 16:41:31,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2922, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3696, PETRI_PLACES=328, PETRI_TRANSITIONS=329} [2024-06-20 16:41:31,379 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 298 predicate places. [2024-06-20 16:41:31,380 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 329 transitions, 3696 flow [2024-06-20 16:41:31,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:31,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:41:31,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:41:31,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-20 16:41:31,380 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)] === [2024-06-20 16:41:31,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:41:31,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1634129821, now seen corresponding path program 5 times [2024-06-20 16:41:31,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:41:31,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167175057] [2024-06-20 16:41:31,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:41:31,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:41:31,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:41:32,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:41:32,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:41:32,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167175057] [2024-06-20 16:41:32,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167175057] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:41:32,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:41:32,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:41:32,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911038170] [2024-06-20 16:41:32,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:41:32,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:41:32,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:41:32,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:41:32,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:41:32,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:41:32,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 329 transitions, 3696 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:32,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:41:32,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:41:32,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:41:33,488 INFO L124 PetriNetUnfolderBase]: 682/1316 cut-off events. [2024-06-20 16:41:33,488 INFO L125 PetriNetUnfolderBase]: For 134261/134261 co-relation queries the response was YES. [2024-06-20 16:41:33,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9271 conditions, 1316 events. 682/1316 cut-off events. For 134261/134261 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 7874 event pairs, 63 based on Foata normal form. 4/1319 useless extension candidates. Maximal degree in co-relation 9127. Up to 1039 conditions per place. [2024-06-20 16:41:33,502 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 260 selfloop transitions, 81 changer transitions 0/344 dead transitions. [2024-06-20 16:41:33,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 344 transitions, 4477 flow [2024-06-20 16:41:33,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:41:33,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:41:33,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-20 16:41:33,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-20 16:41:33,503 INFO L175 Difference]: Start difference. First operand has 328 places, 329 transitions, 3696 flow. Second operand 11 states and 135 transitions. [2024-06-20 16:41:33,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 344 transitions, 4477 flow [2024-06-20 16:41:33,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 344 transitions, 4399 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-20 16:41:33,887 INFO L231 Difference]: Finished difference. Result has 334 places, 331 transitions, 3859 flow [2024-06-20 16:41:33,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3620, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3859, PETRI_PLACES=334, PETRI_TRANSITIONS=331} [2024-06-20 16:41:33,887 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 304 predicate places. [2024-06-20 16:41:33,887 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 331 transitions, 3859 flow [2024-06-20 16:41:33,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:33,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:41:33,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:41:33,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-20 16:41:33,888 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)] === [2024-06-20 16:41:33,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:41:33,888 INFO L85 PathProgramCache]: Analyzing trace with hash 498686797, now seen corresponding path program 6 times [2024-06-20 16:41:33,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:41:33,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344073277] [2024-06-20 16:41:33,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:41:33,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:41:33,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:41:35,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:41:35,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:41:35,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344073277] [2024-06-20 16:41:35,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344073277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:41:35,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:41:35,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:41:35,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540222684] [2024-06-20 16:41:35,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:41:35,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:41:35,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:41:35,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:41:35,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:41:35,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:41:35,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 331 transitions, 3859 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:35,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:41:35,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:41:35,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:41:35,679 INFO L124 PetriNetUnfolderBase]: 683/1319 cut-off events. [2024-06-20 16:41:35,679 INFO L125 PetriNetUnfolderBase]: For 127361/127361 co-relation queries the response was YES. [2024-06-20 16:41:35,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9246 conditions, 1319 events. 683/1319 cut-off events. For 127361/127361 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 7896 event pairs, 64 based on Foata normal form. 4/1322 useless extension candidates. Maximal degree in co-relation 9100. Up to 1030 conditions per place. [2024-06-20 16:41:35,694 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 252 selfloop transitions, 89 changer transitions 0/344 dead transitions. [2024-06-20 16:41:35,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 344 transitions, 4605 flow [2024-06-20 16:41:35,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:41:35,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:41:35,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-20 16:41:35,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2024-06-20 16:41:35,695 INFO L175 Difference]: Start difference. First operand has 334 places, 331 transitions, 3859 flow. Second operand 10 states and 126 transitions. [2024-06-20 16:41:35,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 344 transitions, 4605 flow [2024-06-20 16:41:36,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 344 transitions, 4371 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-20 16:41:36,076 INFO L231 Difference]: Finished difference. Result has 335 places, 332 transitions, 3851 flow [2024-06-20 16:41:36,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3625, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3851, PETRI_PLACES=335, PETRI_TRANSITIONS=332} [2024-06-20 16:41:36,077 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 305 predicate places. [2024-06-20 16:41:36,077 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 332 transitions, 3851 flow [2024-06-20 16:41:36,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:36,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:41:36,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:41:36,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-20 16:41:36,078 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)] === [2024-06-20 16:41:36,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:41:36,078 INFO L85 PathProgramCache]: Analyzing trace with hash 491529238, now seen corresponding path program 7 times [2024-06-20 16:41:36,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:41:36,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215813864] [2024-06-20 16:41:36,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:41:36,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:41:36,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:41:37,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:41:37,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:41:37,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215813864] [2024-06-20 16:41:37,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215813864] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:41:37,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:41:37,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:41:37,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396396011] [2024-06-20 16:41:37,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:41:37,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:41:37,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:41:37,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:41:37,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:41:37,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:41:37,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 332 transitions, 3851 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:37,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:41:37,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:41:37,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:41:38,372 INFO L124 PetriNetUnfolderBase]: 686/1324 cut-off events. [2024-06-20 16:41:38,372 INFO L125 PetriNetUnfolderBase]: For 113913/113913 co-relation queries the response was YES. [2024-06-20 16:41:38,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9236 conditions, 1324 events. 686/1324 cut-off events. For 113913/113913 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 7931 event pairs, 64 based on Foata normal form. 1/1324 useless extension candidates. Maximal degree in co-relation 9089. Up to 1054 conditions per place. [2024-06-20 16:41:38,386 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 270 selfloop transitions, 73 changer transitions 0/346 dead transitions. [2024-06-20 16:41:38,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 346 transitions, 4623 flow [2024-06-20 16:41:38,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:41:38,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:41:38,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-20 16:41:38,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-20 16:41:38,387 INFO L175 Difference]: Start difference. First operand has 335 places, 332 transitions, 3851 flow. Second operand 11 states and 136 transitions. [2024-06-20 16:41:38,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 346 transitions, 4623 flow [2024-06-20 16:41:38,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 346 transitions, 4401 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-20 16:41:38,793 INFO L231 Difference]: Finished difference. Result has 338 places, 334 transitions, 3842 flow [2024-06-20 16:41:38,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3629, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3842, PETRI_PLACES=338, PETRI_TRANSITIONS=334} [2024-06-20 16:41:38,794 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 308 predicate places. [2024-06-20 16:41:38,794 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 334 transitions, 3842 flow [2024-06-20 16:41:38,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:38,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:41:38,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:41:38,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-20 16:41:38,795 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)] === [2024-06-20 16:41:38,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:41:38,795 INFO L85 PathProgramCache]: Analyzing trace with hash 491327428, now seen corresponding path program 8 times [2024-06-20 16:41:38,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:41:38,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386903095] [2024-06-20 16:41:38,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:41:38,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:41:38,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:41:41,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:41:41,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:41:41,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386903095] [2024-06-20 16:41:41,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386903095] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:41:41,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:41:41,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:41:41,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676999820] [2024-06-20 16:41:41,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:41:41,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:41:41,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:41:41,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:41:41,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:41:41,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:41:41,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 334 transitions, 3842 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:41,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:41:41,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:41:41,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:41:42,454 INFO L124 PetriNetUnfolderBase]: 684/1321 cut-off events. [2024-06-20 16:41:42,454 INFO L125 PetriNetUnfolderBase]: For 108091/108091 co-relation queries the response was YES. [2024-06-20 16:41:42,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8978 conditions, 1321 events. 684/1321 cut-off events. For 108091/108091 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 7886 event pairs, 62 based on Foata normal form. 1/1321 useless extension candidates. Maximal degree in co-relation 8830. Up to 1015 conditions per place. [2024-06-20 16:41:42,469 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 258 selfloop transitions, 85 changer transitions 0/346 dead transitions. [2024-06-20 16:41:42,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 346 transitions, 4556 flow [2024-06-20 16:41:42,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:41:42,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:41:42,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-20 16:41:42,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-20 16:41:42,470 INFO L175 Difference]: Start difference. First operand has 338 places, 334 transitions, 3842 flow. Second operand 11 states and 136 transitions. [2024-06-20 16:41:42,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 346 transitions, 4556 flow [2024-06-20 16:41:42,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 346 transitions, 4273 flow, removed 48 selfloop flow, removed 10 redundant places. [2024-06-20 16:41:42,903 INFO L231 Difference]: Finished difference. Result has 339 places, 334 transitions, 3734 flow [2024-06-20 16:41:42,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3559, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3734, PETRI_PLACES=339, PETRI_TRANSITIONS=334} [2024-06-20 16:41:42,903 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 309 predicate places. [2024-06-20 16:41:42,904 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 334 transitions, 3734 flow [2024-06-20 16:41:42,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:42,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:41:42,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:41:42,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-20 16:41:42,904 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)] === [2024-06-20 16:41:42,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:41:42,904 INFO L85 PathProgramCache]: Analyzing trace with hash 285419178, now seen corresponding path program 11 times [2024-06-20 16:41:42,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:41:42,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633859355] [2024-06-20 16:41:42,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:41:42,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:41:42,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:41:44,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:41:44,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:41:44,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633859355] [2024-06-20 16:41:44,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633859355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:41:44,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:41:44,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:41:44,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395607139] [2024-06-20 16:41:44,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:41:44,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:41:44,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:41:44,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:41:44,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:41:44,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:41:44,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 334 transitions, 3734 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:44,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:41:44,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:41:44,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:41:44,551 INFO L124 PetriNetUnfolderBase]: 688/1329 cut-off events. [2024-06-20 16:41:44,552 INFO L125 PetriNetUnfolderBase]: For 116991/116991 co-relation queries the response was YES. [2024-06-20 16:41:44,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9011 conditions, 1329 events. 688/1329 cut-off events. For 116991/116991 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 7990 event pairs, 64 based on Foata normal form. 2/1330 useless extension candidates. Maximal degree in co-relation 8862. Up to 1146 conditions per place. [2024-06-20 16:41:44,567 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 296 selfloop transitions, 46 changer transitions 0/345 dead transitions. [2024-06-20 16:41:44,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 345 transitions, 4490 flow [2024-06-20 16:41:44,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:41:44,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:41:44,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-20 16:41:44,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-20 16:41:44,568 INFO L175 Difference]: Start difference. First operand has 339 places, 334 transitions, 3734 flow. Second operand 10 states and 123 transitions. [2024-06-20 16:41:44,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 345 transitions, 4490 flow [2024-06-20 16:41:44,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 345 transitions, 4300 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-20 16:41:44,967 INFO L231 Difference]: Finished difference. Result has 339 places, 335 transitions, 3692 flow [2024-06-20 16:41:44,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3544, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3692, PETRI_PLACES=339, PETRI_TRANSITIONS=335} [2024-06-20 16:41:44,968 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 309 predicate places. [2024-06-20 16:41:44,968 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 335 transitions, 3692 flow [2024-06-20 16:41:44,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:44,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:41:44,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:41:44,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-20 16:41:44,969 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)] === [2024-06-20 16:41:44,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:41:44,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1939267676, now seen corresponding path program 12 times [2024-06-20 16:41:44,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:41:44,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607210483] [2024-06-20 16:41:44,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:41:44,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:41:44,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:41:46,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:41:46,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:41:46,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607210483] [2024-06-20 16:41:46,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607210483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:41:46,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:41:46,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:41:46,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819384257] [2024-06-20 16:41:46,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:41:46,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:41:46,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:41:46,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:41:46,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:41:46,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:41:46,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 335 transitions, 3692 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:46,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:41:46,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:41:46,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:41:46,728 INFO L124 PetriNetUnfolderBase]: 692/1337 cut-off events. [2024-06-20 16:41:46,728 INFO L125 PetriNetUnfolderBase]: For 118874/118874 co-relation queries the response was YES. [2024-06-20 16:41:46,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9059 conditions, 1337 events. 692/1337 cut-off events. For 118874/118874 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 8043 event pairs, 71 based on Foata normal form. 2/1338 useless extension candidates. Maximal degree in co-relation 8909. Up to 1139 conditions per place. [2024-06-20 16:41:46,744 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 297 selfloop transitions, 47 changer transitions 0/347 dead transitions. [2024-06-20 16:41:46,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 347 transitions, 4466 flow [2024-06-20 16:41:46,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:41:46,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:41:46,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-20 16:41:46,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-20 16:41:46,746 INFO L175 Difference]: Start difference. First operand has 339 places, 335 transitions, 3692 flow. Second operand 10 states and 120 transitions. [2024-06-20 16:41:46,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 347 transitions, 4466 flow [2024-06-20 16:41:47,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 347 transitions, 4326 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-20 16:41:47,233 INFO L231 Difference]: Finished difference. Result has 342 places, 337 transitions, 3721 flow [2024-06-20 16:41:47,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3554, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3721, PETRI_PLACES=342, PETRI_TRANSITIONS=337} [2024-06-20 16:41:47,233 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 312 predicate places. [2024-06-20 16:41:47,233 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 337 transitions, 3721 flow [2024-06-20 16:41:47,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:47,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:41:47,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:41:47,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-20 16:41:47,234 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)] === [2024-06-20 16:41:47,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:41:47,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1969273416, now seen corresponding path program 13 times [2024-06-20 16:41:47,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:41:47,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659809481] [2024-06-20 16:41:47,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:41:47,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:41:47,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:41:48,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:41:48,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:41:48,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659809481] [2024-06-20 16:41:48,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659809481] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:41:48,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:41:48,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:41:48,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390828621] [2024-06-20 16:41:48,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:41:48,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:41:48,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:41:48,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:41:48,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:41:48,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:41:48,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 337 transitions, 3721 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:48,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:41:48,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:41:48,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:41:49,001 INFO L124 PetriNetUnfolderBase]: 696/1345 cut-off events. [2024-06-20 16:41:49,001 INFO L125 PetriNetUnfolderBase]: For 121305/121305 co-relation queries the response was YES. [2024-06-20 16:41:49,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9123 conditions, 1345 events. 696/1345 cut-off events. For 121305/121305 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 8099 event pairs, 70 based on Foata normal form. 2/1346 useless extension candidates. Maximal degree in co-relation 8971. Up to 1095 conditions per place. [2024-06-20 16:41:49,012 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 270 selfloop transitions, 75 changer transitions 0/348 dead transitions. [2024-06-20 16:41:49,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 348 transitions, 4487 flow [2024-06-20 16:41:49,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:41:49,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:41:49,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-20 16:41:49,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-20 16:41:49,013 INFO L175 Difference]: Start difference. First operand has 342 places, 337 transitions, 3721 flow. Second operand 11 states and 132 transitions. [2024-06-20 16:41:49,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 348 transitions, 4487 flow [2024-06-20 16:41:49,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 348 transitions, 4348 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-20 16:41:49,525 INFO L231 Difference]: Finished difference. Result has 346 places, 338 transitions, 3792 flow [2024-06-20 16:41:49,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3582, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3792, PETRI_PLACES=346, PETRI_TRANSITIONS=338} [2024-06-20 16:41:49,526 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 316 predicate places. [2024-06-20 16:41:49,526 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 338 transitions, 3792 flow [2024-06-20 16:41:49,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:49,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:41:49,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:41:49,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-20 16:41:49,526 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)] === [2024-06-20 16:41:49,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:41:49,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1933905296, now seen corresponding path program 14 times [2024-06-20 16:41:49,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:41:49,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731143025] [2024-06-20 16:41:49,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:41:49,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:41:49,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:41:50,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:41:50,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:41:50,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731143025] [2024-06-20 16:41:50,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731143025] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:41:50,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:41:50,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:41:50,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076399298] [2024-06-20 16:41:50,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:41:50,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:41:50,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:41:50,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:41:50,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:41:50,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:41:50,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 338 transitions, 3792 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:50,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:41:50,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:41:50,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:41:51,418 INFO L124 PetriNetUnfolderBase]: 700/1353 cut-off events. [2024-06-20 16:41:51,418 INFO L125 PetriNetUnfolderBase]: For 123733/123733 co-relation queries the response was YES. [2024-06-20 16:41:51,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9233 conditions, 1353 events. 700/1353 cut-off events. For 123733/123733 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 8160 event pairs, 72 based on Foata normal form. 2/1354 useless extension candidates. Maximal degree in co-relation 9080. Up to 1179 conditions per place. [2024-06-20 16:41:51,435 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 303 selfloop transitions, 43 changer transitions 0/349 dead transitions. [2024-06-20 16:41:51,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 349 transitions, 4562 flow [2024-06-20 16:41:51,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:41:51,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:41:51,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-20 16:41:51,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-20 16:41:51,436 INFO L175 Difference]: Start difference. First operand has 346 places, 338 transitions, 3792 flow. Second operand 10 states and 121 transitions. [2024-06-20 16:41:51,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 349 transitions, 4562 flow [2024-06-20 16:41:51,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 349 transitions, 4362 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-20 16:41:51,887 INFO L231 Difference]: Finished difference. Result has 347 places, 339 transitions, 3740 flow [2024-06-20 16:41:51,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3592, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3740, PETRI_PLACES=347, PETRI_TRANSITIONS=339} [2024-06-20 16:41:51,888 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 317 predicate places. [2024-06-20 16:41:51,888 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 339 transitions, 3740 flow [2024-06-20 16:41:51,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:51,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:41:51,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:41:51,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-20 16:41:51,888 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)] === [2024-06-20 16:41:51,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:41:51,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1939415546, now seen corresponding path program 15 times [2024-06-20 16:41:51,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:41:51,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901292710] [2024-06-20 16:41:51,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:41:51,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:41:51,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:41:53,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:41:53,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:41:53,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901292710] [2024-06-20 16:41:53,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901292710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:41:53,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:41:53,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:41:53,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632488189] [2024-06-20 16:41:53,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:41:53,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:41:53,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:41:53,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:41:53,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:41:53,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:41:53,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 339 transitions, 3740 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:53,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:41:53,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:41:53,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:41:53,672 INFO L124 PetriNetUnfolderBase]: 697/1348 cut-off events. [2024-06-20 16:41:53,672 INFO L125 PetriNetUnfolderBase]: For 113476/113476 co-relation queries the response was YES. [2024-06-20 16:41:53,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8824 conditions, 1348 events. 697/1348 cut-off events. For 113476/113476 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 8129 event pairs, 69 based on Foata normal form. 2/1349 useless extension candidates. Maximal degree in co-relation 8670. Up to 1175 conditions per place. [2024-06-20 16:41:53,690 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 308 selfloop transitions, 39 changer transitions 0/350 dead transitions. [2024-06-20 16:41:53,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 350 transitions, 4458 flow [2024-06-20 16:41:53,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:41:53,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:41:53,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-20 16:41:53,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38387096774193546 [2024-06-20 16:41:53,690 INFO L175 Difference]: Start difference. First operand has 347 places, 339 transitions, 3740 flow. Second operand 10 states and 119 transitions. [2024-06-20 16:41:53,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 350 transitions, 4458 flow [2024-06-20 16:41:54,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 350 transitions, 4320 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-20 16:41:54,195 INFO L231 Difference]: Finished difference. Result has 349 places, 339 transitions, 3684 flow [2024-06-20 16:41:54,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3602, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3684, PETRI_PLACES=349, PETRI_TRANSITIONS=339} [2024-06-20 16:41:54,196 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 319 predicate places. [2024-06-20 16:41:54,196 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 339 transitions, 3684 flow [2024-06-20 16:41:54,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:54,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:41:54,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:41:54,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-20 16:41:54,196 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)] === [2024-06-20 16:41:54,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:41:54,197 INFO L85 PathProgramCache]: Analyzing trace with hash 199674521, now seen corresponding path program 7 times [2024-06-20 16:41:54,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:41:54,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6274179] [2024-06-20 16:41:54,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:41:54,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:41:54,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:41:55,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:41:55,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:41:55,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6274179] [2024-06-20 16:41:55,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6274179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:41:55,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:41:55,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:41:55,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035981209] [2024-06-20 16:41:55,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:41:55,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:41:55,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:41:55,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:41:55,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:41:55,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:41:55,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 339 transitions, 3684 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) [2024-06-20 16:41:55,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:41:55,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:41:55,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:41:55,851 INFO L124 PetriNetUnfolderBase]: 701/1356 cut-off events. [2024-06-20 16:41:55,851 INFO L125 PetriNetUnfolderBase]: For 114490/114490 co-relation queries the response was YES. [2024-06-20 16:41:55,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8818 conditions, 1356 events. 701/1356 cut-off events. For 114490/114490 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 8186 event pairs, 127 based on Foata normal form. 2/1357 useless extension candidates. Maximal degree in co-relation 8663. Up to 1229 conditions per place. [2024-06-20 16:41:55,867 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 322 selfloop transitions, 25 changer transitions 0/350 dead transitions. [2024-06-20 16:41:55,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 350 transitions, 4436 flow [2024-06-20 16:41:55,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:41:55,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:41:55,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-20 16:41:55,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774193548387097 [2024-06-20 16:41:55,867 INFO L175 Difference]: Start difference. First operand has 349 places, 339 transitions, 3684 flow. Second operand 10 states and 117 transitions. [2024-06-20 16:41:55,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 350 transitions, 4436 flow [2024-06-20 16:41:56,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 350 transitions, 4194 flow, removed 28 selfloop flow, removed 11 redundant places. [2024-06-20 16:41:56,392 INFO L231 Difference]: Finished difference. Result has 348 places, 340 transitions, 3536 flow [2024-06-20 16:41:56,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3442, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3536, PETRI_PLACES=348, PETRI_TRANSITIONS=340} [2024-06-20 16:41:56,393 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 318 predicate places. [2024-06-20 16:41:56,393 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 340 transitions, 3536 flow [2024-06-20 16:41:56,393 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) [2024-06-20 16:41:56,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:41:56,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:41:56,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-20 16:41:56,393 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)] === [2024-06-20 16:41:56,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:41:56,394 INFO L85 PathProgramCache]: Analyzing trace with hash 199683821, now seen corresponding path program 8 times [2024-06-20 16:41:56,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:41:56,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101794693] [2024-06-20 16:41:56,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:41:56,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:41:56,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:41:57,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:41:57,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:41:57,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101794693] [2024-06-20 16:41:57,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101794693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:41:57,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:41:57,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:41:57,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314820583] [2024-06-20 16:41:57,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:41:57,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:41:57,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:41:57,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:41:57,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:41:58,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:41:58,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 340 transitions, 3536 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:58,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:41:58,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:41:58,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:41:58,558 INFO L124 PetriNetUnfolderBase]: 713/1382 cut-off events. [2024-06-20 16:41:58,558 INFO L125 PetriNetUnfolderBase]: For 116169/116169 co-relation queries the response was YES. [2024-06-20 16:41:58,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8741 conditions, 1382 events. 713/1382 cut-off events. For 116169/116169 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 8430 event pairs, 125 based on Foata normal form. 2/1383 useless extension candidates. Maximal degree in co-relation 8587. Up to 1250 conditions per place. [2024-06-20 16:41:58,574 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 330 selfloop transitions, 22 changer transitions 0/355 dead transitions. [2024-06-20 16:41:58,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 355 transitions, 4346 flow [2024-06-20 16:41:58,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:41:58,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:41:58,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-20 16:41:58,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-20 16:41:58,575 INFO L175 Difference]: Start difference. First operand has 348 places, 340 transitions, 3536 flow. Second operand 11 states and 127 transitions. [2024-06-20 16:41:58,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 355 transitions, 4346 flow [2024-06-20 16:41:58,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 355 transitions, 4231 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-06-20 16:41:59,039 INFO L231 Difference]: Finished difference. Result has 352 places, 343 transitions, 3560 flow [2024-06-20 16:41:59,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3456, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3560, PETRI_PLACES=352, PETRI_TRANSITIONS=343} [2024-06-20 16:41:59,039 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 322 predicate places. [2024-06-20 16:41:59,039 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 343 transitions, 3560 flow [2024-06-20 16:41:59,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:59,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:41:59,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:41:59,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-20 16:41:59,040 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)] === [2024-06-20 16:41:59,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:41:59,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1732341095, now seen corresponding path program 9 times [2024-06-20 16:41:59,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:41:59,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216393195] [2024-06-20 16:41:59,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:41:59,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:41:59,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:42:00,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:42:00,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:42:00,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216393195] [2024-06-20 16:42:00,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216393195] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:42:00,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:42:00,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:42:00,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787930997] [2024-06-20 16:42:00,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:42:00,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:42:00,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:42:00,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:42:00,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:42:00,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:42:00,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 343 transitions, 3560 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) [2024-06-20 16:42:00,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:42:00,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:42:00,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:42:00,675 INFO L124 PetriNetUnfolderBase]: 717/1390 cut-off events. [2024-06-20 16:42:00,675 INFO L125 PetriNetUnfolderBase]: For 117749/117749 co-relation queries the response was YES. [2024-06-20 16:42:00,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8742 conditions, 1390 events. 717/1390 cut-off events. For 117749/117749 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 8479 event pairs, 75 based on Foata normal form. 2/1391 useless extension candidates. Maximal degree in co-relation 8586. Up to 1176 conditions per place. [2024-06-20 16:42:00,692 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 292 selfloop transitions, 59 changer transitions 0/354 dead transitions. [2024-06-20 16:42:00,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 354 transitions, 4324 flow [2024-06-20 16:42:00,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:42:00,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:42:00,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-20 16:42:00,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-20 16:42:00,693 INFO L175 Difference]: Start difference. First operand has 352 places, 343 transitions, 3560 flow. Second operand 10 states and 127 transitions. [2024-06-20 16:42:00,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 354 transitions, 4324 flow [2024-06-20 16:42:01,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 354 transitions, 4251 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-20 16:42:01,129 INFO L231 Difference]: Finished difference. Result has 354 places, 344 transitions, 3652 flow [2024-06-20 16:42:01,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3487, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3652, PETRI_PLACES=354, PETRI_TRANSITIONS=344} [2024-06-20 16:42:01,129 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 324 predicate places. [2024-06-20 16:42:01,130 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 344 transitions, 3652 flow [2024-06-20 16:42:01,130 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) [2024-06-20 16:42:01,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:42:01,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:42:01,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-20 16:42:01,130 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)] === [2024-06-20 16:42:01,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:42:01,131 INFO L85 PathProgramCache]: Analyzing trace with hash 199407332, now seen corresponding path program 9 times [2024-06-20 16:42:01,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:42:01,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286431431] [2024-06-20 16:42:01,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:42:01,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:42:01,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:42:02,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:42:02,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:42:02,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286431431] [2024-06-20 16:42:02,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286431431] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:42:02,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:42:02,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:42:02,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220139962] [2024-06-20 16:42:02,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:42:02,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:42:02,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:42:02,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:42:02,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:42:03,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:42:03,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 344 transitions, 3652 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:42:03,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:42:03,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:42:03,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:42:03,618 INFO L124 PetriNetUnfolderBase]: 715/1387 cut-off events. [2024-06-20 16:42:03,618 INFO L125 PetriNetUnfolderBase]: For 107857/107857 co-relation queries the response was YES. [2024-06-20 16:42:03,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8640 conditions, 1387 events. 715/1387 cut-off events. For 107857/107857 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 8457 event pairs, 127 based on Foata normal form. 1/1387 useless extension candidates. Maximal degree in co-relation 8483. Up to 1280 conditions per place. [2024-06-20 16:42:03,631 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 332 selfloop transitions, 19 changer transitions 0/354 dead transitions. [2024-06-20 16:42:03,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 354 transitions, 4376 flow [2024-06-20 16:42:03,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:42:03,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:42:03,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-20 16:42:03,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-20 16:42:03,632 INFO L175 Difference]: Start difference. First operand has 354 places, 344 transitions, 3652 flow. Second operand 11 states and 124 transitions. [2024-06-20 16:42:03,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 354 transitions, 4376 flow [2024-06-20 16:42:04,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 354 transitions, 4177 flow, removed 42 selfloop flow, removed 8 redundant places. [2024-06-20 16:42:04,103 INFO L231 Difference]: Finished difference. Result has 357 places, 344 transitions, 3496 flow [2024-06-20 16:42:04,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3453, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3496, PETRI_PLACES=357, PETRI_TRANSITIONS=344} [2024-06-20 16:42:04,104 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 327 predicate places. [2024-06-20 16:42:04,104 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 344 transitions, 3496 flow [2024-06-20 16:42:04,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:42:04,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:42:04,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:42:04,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-20 16:42:04,104 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)] === [2024-06-20 16:42:04,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:42:04,105 INFO L85 PathProgramCache]: Analyzing trace with hash -55896446, now seen corresponding path program 10 times [2024-06-20 16:42:04,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:42:04,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266960580] [2024-06-20 16:42:04,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:42:04,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:42:04,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:42:05,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:42:05,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:42:05,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266960580] [2024-06-20 16:42:05,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266960580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:42:05,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:42:05,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:42:05,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219200430] [2024-06-20 16:42:05,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:42:05,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:42:05,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:42:05,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:42:05,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:42:05,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:42:05,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 344 transitions, 3496 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:42:05,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:42:05,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:42:05,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:42:06,140 INFO L124 PetriNetUnfolderBase]: 723/1400 cut-off events. [2024-06-20 16:42:06,141 INFO L125 PetriNetUnfolderBase]: For 115491/115491 co-relation queries the response was YES. [2024-06-20 16:42:06,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8758 conditions, 1400 events. 723/1400 cut-off events. For 115491/115491 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 8540 event pairs, 74 based on Foata normal form. 1/1400 useless extension candidates. Maximal degree in co-relation 8600. Up to 981 conditions per place. [2024-06-20 16:42:06,155 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 233 selfloop transitions, 123 changer transitions 0/359 dead transitions. [2024-06-20 16:42:06,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 359 transitions, 4592 flow [2024-06-20 16:42:06,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:42:06,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:42:06,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-20 16:42:06,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41055718475073316 [2024-06-20 16:42:06,156 INFO L175 Difference]: Start difference. First operand has 357 places, 344 transitions, 3496 flow. Second operand 11 states and 140 transitions. [2024-06-20 16:42:06,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 359 transitions, 4592 flow [2024-06-20 16:42:06,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 359 transitions, 4509 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-20 16:42:06,643 INFO L231 Difference]: Finished difference. Result has 356 places, 348 transitions, 3808 flow [2024-06-20 16:42:06,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3413, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3808, PETRI_PLACES=356, PETRI_TRANSITIONS=348} [2024-06-20 16:42:06,644 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 326 predicate places. [2024-06-20 16:42:06,644 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 348 transitions, 3808 flow [2024-06-20 16:42:06,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:42:06,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:42:06,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:42:06,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-20 16:42:06,644 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)] === [2024-06-20 16:42:06,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:42:06,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1969488897, now seen corresponding path program 10 times [2024-06-20 16:42:06,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:42:06,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910060336] [2024-06-20 16:42:06,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:42:06,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:42:06,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:42:08,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:42:08,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:42:08,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910060336] [2024-06-20 16:42:08,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910060336] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:42:08,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:42:08,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:42:08,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705461304] [2024-06-20 16:42:08,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:42:08,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:42:08,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:42:08,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:42:08,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:42:08,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:42:08,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 348 transitions, 3808 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:42:08,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:42:08,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:42:08,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:42:08,757 INFO L124 PetriNetUnfolderBase]: 727/1410 cut-off events. [2024-06-20 16:42:08,758 INFO L125 PetriNetUnfolderBase]: For 125336/125336 co-relation queries the response was YES. [2024-06-20 16:42:08,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9097 conditions, 1410 events. 727/1410 cut-off events. For 125336/125336 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 8643 event pairs, 75 based on Foata normal form. 2/1411 useless extension candidates. Maximal degree in co-relation 8938. Up to 1108 conditions per place. [2024-06-20 16:42:08,773 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 263 selfloop transitions, 94 changer transitions 0/360 dead transitions. [2024-06-20 16:42:08,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 360 transitions, 4588 flow [2024-06-20 16:42:08,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:42:08,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:42:08,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-20 16:42:08,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-20 16:42:08,774 INFO L175 Difference]: Start difference. First operand has 356 places, 348 transitions, 3808 flow. Second operand 11 states and 135 transitions. [2024-06-20 16:42:08,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 360 transitions, 4588 flow [2024-06-20 16:42:09,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 360 transitions, 4344 flow, removed 43 selfloop flow, removed 8 redundant places. [2024-06-20 16:42:09,321 INFO L231 Difference]: Finished difference. Result has 359 places, 349 transitions, 3800 flow [2024-06-20 16:42:09,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3564, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3800, PETRI_PLACES=359, PETRI_TRANSITIONS=349} [2024-06-20 16:42:09,321 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 329 predicate places. [2024-06-20 16:42:09,322 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 349 transitions, 3800 flow [2024-06-20 16:42:09,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:42:09,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:42:09,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:42:09,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-20 16:42:09,322 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)] === [2024-06-20 16:42:09,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:42:09,323 INFO L85 PathProgramCache]: Analyzing trace with hash 220561068, now seen corresponding path program 11 times [2024-06-20 16:42:09,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:42:09,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311696490] [2024-06-20 16:42:09,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:42:09,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:42:09,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:42:11,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:42:11,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:42:11,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311696490] [2024-06-20 16:42:11,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311696490] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:42:11,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:42:11,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:42:11,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473307721] [2024-06-20 16:42:11,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:42:11,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:42:11,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:42:11,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:42:11,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:42:11,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:42:11,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 349 transitions, 3800 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:42:11,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:42:11,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:42:11,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:42:11,779 INFO L124 PetriNetUnfolderBase]: 725/1407 cut-off events. [2024-06-20 16:42:11,779 INFO L125 PetriNetUnfolderBase]: For 113886/113886 co-relation queries the response was YES. [2024-06-20 16:42:11,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9004 conditions, 1407 events. 725/1407 cut-off events. For 113886/113886 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 8636 event pairs, 75 based on Foata normal form. 1/1407 useless extension candidates. Maximal degree in co-relation 8844. Up to 1193 conditions per place. [2024-06-20 16:42:11,795 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 293 selfloop transitions, 63 changer transitions 0/359 dead transitions. [2024-06-20 16:42:11,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 359 transitions, 4534 flow [2024-06-20 16:42:11,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:42:11,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:42:11,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-20 16:42:11,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-20 16:42:11,796 INFO L175 Difference]: Start difference. First operand has 359 places, 349 transitions, 3800 flow. Second operand 11 states and 135 transitions. [2024-06-20 16:42:11,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 359 transitions, 4534 flow [2024-06-20 16:42:12,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 359 transitions, 4248 flow, removed 43 selfloop flow, removed 10 redundant places. [2024-06-20 16:42:12,335 INFO L231 Difference]: Finished difference. Result has 360 places, 349 transitions, 3645 flow [2024-06-20 16:42:12,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3514, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3645, PETRI_PLACES=360, PETRI_TRANSITIONS=349} [2024-06-20 16:42:12,336 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 330 predicate places. [2024-06-20 16:42:12,336 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 349 transitions, 3645 flow [2024-06-20 16:42:12,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:42:12,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:42:12,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:42:12,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-20 16:42:12,336 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)] === [2024-06-20 16:42:12,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:42:12,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1732331795, now seen corresponding path program 11 times [2024-06-20 16:42:12,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:42:12,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955897668] [2024-06-20 16:42:12,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:42:12,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:42:12,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:42:13,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:42:13,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:42:13,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955897668] [2024-06-20 16:42:13,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955897668] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:42:13,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:42:13,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:42:13,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905422026] [2024-06-20 16:42:13,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:42:13,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:42:13,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:42:13,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:42:13,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:42:13,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:42:13,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 349 transitions, 3645 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:42:13,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:42:13,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:42:13,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:42:14,365 INFO L124 PetriNetUnfolderBase]: 758/1474 cut-off events. [2024-06-20 16:42:14,365 INFO L125 PetriNetUnfolderBase]: For 184513/184513 co-relation queries the response was YES. [2024-06-20 16:42:14,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10509 conditions, 1474 events. 758/1474 cut-off events. For 184513/184513 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 9070 event pairs, 87 based on Foata normal form. 2/1475 useless extension candidates. Maximal degree in co-relation 10348. Up to 1153 conditions per place. [2024-06-20 16:42:14,383 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 293 selfloop transitions, 71 changer transitions 0/367 dead transitions. [2024-06-20 16:42:14,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 367 transitions, 4791 flow [2024-06-20 16:42:14,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:42:14,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:42:14,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-20 16:42:14,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-20 16:42:14,384 INFO L175 Difference]: Start difference. First operand has 360 places, 349 transitions, 3645 flow. Second operand 11 states and 143 transitions. [2024-06-20 16:42:14,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 367 transitions, 4791 flow [2024-06-20 16:42:15,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 367 transitions, 4606 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-20 16:42:15,076 INFO L231 Difference]: Finished difference. Result has 362 places, 351 transitions, 3696 flow [2024-06-20 16:42:15,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3460, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3696, PETRI_PLACES=362, PETRI_TRANSITIONS=351} [2024-06-20 16:42:15,076 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 332 predicate places. [2024-06-20 16:42:15,076 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 351 transitions, 3696 flow [2024-06-20 16:42:15,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:42:15,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:42:15,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:42:15,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-20 16:42:15,077 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)] === [2024-06-20 16:42:15,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:42:15,077 INFO L85 PathProgramCache]: Analyzing trace with hash 213411228, now seen corresponding path program 12 times [2024-06-20 16:42:15,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:42:15,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594419178] [2024-06-20 16:42:15,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:42:15,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:42:15,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:42:16,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:42:16,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:42:16,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594419178] [2024-06-20 16:42:16,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594419178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:42:16,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:42:16,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:42:16,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535251821] [2024-06-20 16:42:16,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:42:16,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:42:16,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:42:16,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:42:16,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:42:17,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:42:17,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 351 transitions, 3696 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:42:17,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:42:17,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:42:17,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:42:17,584 INFO L124 PetriNetUnfolderBase]: 761/1479 cut-off events. [2024-06-20 16:42:17,585 INFO L125 PetriNetUnfolderBase]: For 181503/181503 co-relation queries the response was YES. [2024-06-20 16:42:17,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10613 conditions, 1479 events. 761/1479 cut-off events. For 181503/181503 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 9115 event pairs, 88 based on Foata normal form. 1/1479 useless extension candidates. Maximal degree in co-relation 10451. Up to 1265 conditions per place. [2024-06-20 16:42:17,602 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 300 selfloop transitions, 60 changer transitions 0/363 dead transitions. [2024-06-20 16:42:17,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 363 transitions, 4498 flow [2024-06-20 16:42:17,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:42:17,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:42:17,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-20 16:42:17,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40175953079178883 [2024-06-20 16:42:17,603 INFO L175 Difference]: Start difference. First operand has 362 places, 351 transitions, 3696 flow. Second operand 11 states and 137 transitions. [2024-06-20 16:42:17,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 363 transitions, 4498 flow [2024-06-20 16:42:18,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 363 transitions, 4364 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-20 16:42:18,413 INFO L231 Difference]: Finished difference. Result has 366 places, 353 transitions, 3751 flow [2024-06-20 16:42:18,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3562, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3751, PETRI_PLACES=366, PETRI_TRANSITIONS=353} [2024-06-20 16:42:18,413 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 336 predicate places. [2024-06-20 16:42:18,413 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 353 transitions, 3751 flow [2024-06-20 16:42:18,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:42:18,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:42:18,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:42:18,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-20 16:42:18,414 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)] === [2024-06-20 16:42:18,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:42:18,414 INFO L85 PathProgramCache]: Analyzing trace with hash -55903886, now seen corresponding path program 13 times [2024-06-20 16:42:18,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:42:18,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834794359] [2024-06-20 16:42:18,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:42:18,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:42:18,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:42:20,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:42:20,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:42:20,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834794359] [2024-06-20 16:42:20,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834794359] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:42:20,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:42:20,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:42:20,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595175799] [2024-06-20 16:42:20,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:42:20,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:42:20,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:42:20,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:42:20,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:42:20,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:42:20,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 353 transitions, 3751 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:42:20,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:42:20,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:42:20,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:42:20,737 INFO L124 PetriNetUnfolderBase]: 764/1484 cut-off events. [2024-06-20 16:42:20,737 INFO L125 PetriNetUnfolderBase]: For 183998/183998 co-relation queries the response was YES. [2024-06-20 16:42:20,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10698 conditions, 1484 events. 764/1484 cut-off events. For 183998/183998 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 9144 event pairs, 88 based on Foata normal form. 1/1484 useless extension candidates. Maximal degree in co-relation 10534. Up to 1108 conditions per place. [2024-06-20 16:42:20,755 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 252 selfloop transitions, 110 changer transitions 0/365 dead transitions. [2024-06-20 16:42:20,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 365 transitions, 4553 flow [2024-06-20 16:42:20,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:42:20,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:42:20,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-20 16:42:20,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40175953079178883 [2024-06-20 16:42:20,756 INFO L175 Difference]: Start difference. First operand has 366 places, 353 transitions, 3751 flow. Second operand 11 states and 137 transitions. [2024-06-20 16:42:20,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 365 transitions, 4553 flow [2024-06-20 16:42:21,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 365 transitions, 4403 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-20 16:42:21,613 INFO L231 Difference]: Finished difference. Result has 370 places, 355 transitions, 3886 flow [2024-06-20 16:42:21,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3601, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3886, PETRI_PLACES=370, PETRI_TRANSITIONS=355} [2024-06-20 16:42:21,613 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 340 predicate places. [2024-06-20 16:42:21,613 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 355 transitions, 3886 flow [2024-06-20 16:42:21,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:42:21,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:42:21,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:42:21,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-20 16:42:21,614 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)] === [2024-06-20 16:42:21,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:42:21,614 INFO L85 PathProgramCache]: Analyzing trace with hash -56105696, now seen corresponding path program 14 times [2024-06-20 16:42:21,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:42:21,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547190515] [2024-06-20 16:42:21,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:42:21,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:42:21,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:42:23,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:42:23,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:42:23,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547190515] [2024-06-20 16:42:23,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547190515] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:42:23,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:42:23,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:42:23,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110208180] [2024-06-20 16:42:23,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:42:23,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:42:23,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:42:23,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:42:23,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:42:23,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:42:23,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 355 transitions, 3886 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:42:23,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:42:23,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:42:23,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:42:23,715 INFO L124 PetriNetUnfolderBase]: 767/1489 cut-off events. [2024-06-20 16:42:23,715 INFO L125 PetriNetUnfolderBase]: For 187513/187513 co-relation queries the response was YES. [2024-06-20 16:42:23,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10886 conditions, 1489 events. 767/1489 cut-off events. For 187513/187513 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 9215 event pairs, 90 based on Foata normal form. 1/1489 useless extension candidates. Maximal degree in co-relation 10721. Up to 928 conditions per place. [2024-06-20 16:42:23,738 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 205 selfloop transitions, 164 changer transitions 0/372 dead transitions. [2024-06-20 16:42:23,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 372 transitions, 5496 flow [2024-06-20 16:42:23,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:42:23,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:42:23,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-20 16:42:23,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222873900293255 [2024-06-20 16:42:23,739 INFO L175 Difference]: Start difference. First operand has 370 places, 355 transitions, 3886 flow. Second operand 11 states and 144 transitions. [2024-06-20 16:42:23,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 372 transitions, 5496 flow [2024-06-20 16:42:24,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 372 transitions, 5185 flow, removed 47 selfloop flow, removed 9 redundant places. [2024-06-20 16:42:24,515 INFO L231 Difference]: Finished difference. Result has 372 places, 359 transitions, 4060 flow [2024-06-20 16:42:24,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3575, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4060, PETRI_PLACES=372, PETRI_TRANSITIONS=359} [2024-06-20 16:42:24,515 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 342 predicate places. [2024-06-20 16:42:24,516 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 359 transitions, 4060 flow [2024-06-20 16:42:24,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:42:24,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:42:24,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:42:24,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-20 16:42:24,516 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)] === [2024-06-20 16:42:24,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:42:24,516 INFO L85 PathProgramCache]: Analyzing trace with hash 213418947, now seen corresponding path program 12 times [2024-06-20 16:42:24,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:42:24,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031635243] [2024-06-20 16:42:24,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:42:24,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:42:24,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:42:25,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:42:25,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:42:25,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031635243] [2024-06-20 16:42:25,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031635243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:42:25,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:42:25,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:42:25,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574482556] [2024-06-20 16:42:25,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:42:25,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:42:25,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:42:25,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:42:25,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:42:25,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:42:25,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 359 transitions, 4060 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) [2024-06-20 16:42:25,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:42:25,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:42:25,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:42:26,186 INFO L124 PetriNetUnfolderBase]: 771/1497 cut-off events. [2024-06-20 16:42:26,186 INFO L125 PetriNetUnfolderBase]: For 198421/198421 co-relation queries the response was YES. [2024-06-20 16:42:26,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11073 conditions, 1497 events. 771/1497 cut-off events. For 198421/198421 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 9299 event pairs, 88 based on Foata normal form. 2/1498 useless extension candidates. Maximal degree in co-relation 10907. Up to 1283 conditions per place. [2024-06-20 16:42:26,204 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 310 selfloop transitions, 57 changer transitions 0/370 dead transitions. [2024-06-20 16:42:26,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 370 transitions, 4860 flow [2024-06-20 16:42:26,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:42:26,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:42:26,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-20 16:42:26,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4129032258064516 [2024-06-20 16:42:26,206 INFO L175 Difference]: Start difference. First operand has 372 places, 359 transitions, 4060 flow. Second operand 10 states and 128 transitions. [2024-06-20 16:42:26,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 370 transitions, 4860 flow [2024-06-20 16:42:27,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 370 transitions, 4538 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-20 16:42:27,020 INFO L231 Difference]: Finished difference. Result has 373 places, 360 transitions, 3902 flow [2024-06-20 16:42:27,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3738, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3902, PETRI_PLACES=373, PETRI_TRANSITIONS=360} [2024-06-20 16:42:27,021 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 343 predicate places. [2024-06-20 16:42:27,021 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 360 transitions, 3902 flow [2024-06-20 16:42:27,021 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) [2024-06-20 16:42:27,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:42:27,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:42:27,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-20 16:42:27,021 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)] === [2024-06-20 16:42:27,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:42:27,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1739959934, now seen corresponding path program 15 times [2024-06-20 16:42:27,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:42:27,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599451634] [2024-06-20 16:42:27,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:42:27,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:42:27,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:42:28,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:42:28,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:42:28,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599451634] [2024-06-20 16:42:28,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599451634] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:42:28,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:42:28,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:42:28,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672662506] [2024-06-20 16:42:28,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:42:28,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:42:28,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:42:28,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:42:28,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:42:28,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:42:28,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 360 transitions, 3902 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:42:28,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:42:28,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:42:28,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:42:29,572 INFO L124 PetriNetUnfolderBase]: 769/1494 cut-off events. [2024-06-20 16:42:29,572 INFO L125 PetriNetUnfolderBase]: For 185657/185657 co-relation queries the response was YES. [2024-06-20 16:42:29,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10634 conditions, 1494 events. 769/1494 cut-off events. For 185657/185657 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 9253 event pairs, 88 based on Foata normal form. 1/1494 useless extension candidates. Maximal degree in co-relation 10468. Up to 1280 conditions per place. [2024-06-20 16:42:29,590 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 306 selfloop transitions, 61 changer transitions 0/370 dead transitions. [2024-06-20 16:42:29,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 370 transitions, 4658 flow [2024-06-20 16:42:29,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:42:29,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:42:29,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-20 16:42:29,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-20 16:42:29,591 INFO L175 Difference]: Start difference. First operand has 373 places, 360 transitions, 3902 flow. Second operand 11 states and 136 transitions. [2024-06-20 16:42:29,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 370 transitions, 4658 flow [2024-06-20 16:42:30,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 370 transitions, 4460 flow, removed 43 selfloop flow, removed 8 redundant places. [2024-06-20 16:42:30,349 INFO L231 Difference]: Finished difference. Result has 376 places, 360 transitions, 3831 flow [2024-06-20 16:42:30,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3704, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3831, PETRI_PLACES=376, PETRI_TRANSITIONS=360} [2024-06-20 16:42:30,349 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 346 predicate places. [2024-06-20 16:42:30,349 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 360 transitions, 3831 flow [2024-06-20 16:42:30,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:42:30,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:42:30,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:42:30,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-20 16:42:30,350 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)] === [2024-06-20 16:42:30,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:42:30,350 INFO L85 PathProgramCache]: Analyzing trace with hash 19471818, now seen corresponding path program 16 times [2024-06-20 16:42:30,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:42:30,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52841072] [2024-06-20 16:42:30,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:42:30,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:42:30,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:42:32,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:42:32,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:42:32,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52841072] [2024-06-20 16:42:32,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52841072] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:42:32,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:42:32,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:42:32,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201048790] [2024-06-20 16:42:32,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:42:32,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:42:32,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:42:32,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:42:32,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:42:32,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:42:32,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 360 transitions, 3831 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:42:32,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:42:32,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:42:32,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:42:32,912 INFO L124 PetriNetUnfolderBase]: 772/1499 cut-off events. [2024-06-20 16:42:32,912 INFO L125 PetriNetUnfolderBase]: For 187752/187752 co-relation queries the response was YES. [2024-06-20 16:42:32,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10610 conditions, 1499 events. 772/1499 cut-off events. For 187752/187752 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 9288 event pairs, 88 based on Foata normal form. 1/1499 useless extension candidates. Maximal degree in co-relation 10443. Up to 1312 conditions per place. [2024-06-20 16:42:32,930 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 319 selfloop transitions, 50 changer transitions 0/372 dead transitions. [2024-06-20 16:42:32,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 372 transitions, 4651 flow [2024-06-20 16:42:32,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:42:32,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:42:32,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-20 16:42:32,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-20 16:42:32,932 INFO L175 Difference]: Start difference. First operand has 376 places, 360 transitions, 3831 flow. Second operand 11 states and 132 transitions. [2024-06-20 16:42:32,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 372 transitions, 4651 flow [2024-06-20 16:42:33,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 372 transitions, 4492 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-20 16:42:33,753 INFO L231 Difference]: Finished difference. Result has 376 places, 362 transitions, 3841 flow [2024-06-20 16:42:33,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3672, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3841, PETRI_PLACES=376, PETRI_TRANSITIONS=362} [2024-06-20 16:42:33,754 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 346 predicate places. [2024-06-20 16:42:33,754 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 362 transitions, 3841 flow [2024-06-20 16:42:33,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:42:33,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:42:33,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:42:33,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-20 16:42:33,755 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)] === [2024-06-20 16:42:33,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:42:33,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1933689815, now seen corresponding path program 13 times [2024-06-20 16:42:33,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:42:33,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584611526] [2024-06-20 16:42:33,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:42:33,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:42:33,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:42:35,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:42:35,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:42:35,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584611526] [2024-06-20 16:42:35,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584611526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:42:35,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:42:35,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:42:35,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642615594] [2024-06-20 16:42:35,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:42:35,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:42:35,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:42:35,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:42:35,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:42:35,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:42:35,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 362 transitions, 3841 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:42:35,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:42:35,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:42:35,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:42:35,687 INFO L124 PetriNetUnfolderBase]: 771/1504 cut-off events. [2024-06-20 16:42:35,687 INFO L125 PetriNetUnfolderBase]: For 238797/238797 co-relation queries the response was YES. [2024-06-20 16:42:35,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9380 conditions, 1504 events. 771/1504 cut-off events. For 238797/238797 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 9346 event pairs, 85 based on Foata normal form. 18/1521 useless extension candidates. Maximal degree in co-relation 9212. Up to 1255 conditions per place. [2024-06-20 16:42:35,705 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 323 selfloop transitions, 44 changer transitions 7/377 dead transitions. [2024-06-20 16:42:35,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 377 transitions, 4703 flow [2024-06-20 16:42:35,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:42:35,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:42:35,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-20 16:42:35,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40175953079178883 [2024-06-20 16:42:35,706 INFO L175 Difference]: Start difference. First operand has 376 places, 362 transitions, 3841 flow. Second operand 11 states and 137 transitions. [2024-06-20 16:42:35,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 377 transitions, 4703 flow [2024-06-20 16:42:36,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 377 transitions, 4489 flow, removed 38 selfloop flow, removed 10 redundant places. [2024-06-20 16:42:36,230 INFO L231 Difference]: Finished difference. Result has 377 places, 359 transitions, 3683 flow [2024-06-20 16:42:36,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3627, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3683, PETRI_PLACES=377, PETRI_TRANSITIONS=359} [2024-06-20 16:42:36,231 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 347 predicate places. [2024-06-20 16:42:36,231 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 359 transitions, 3683 flow [2024-06-20 16:42:36,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:42:36,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:42:36,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:42:36,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-20 16:42:36,232 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)] === [2024-06-20 16:42:36,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:42:36,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1976638458, now seen corresponding path program 17 times [2024-06-20 16:42:36,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:42:36,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143499419] [2024-06-20 16:42:36,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:42:36,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:42:36,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:42:37,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:42:37,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:42:37,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143499419] [2024-06-20 16:42:37,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143499419] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:42:37,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:42:37,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:42:37,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382845734] [2024-06-20 16:42:37,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:42:37,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:42:37,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:42:37,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:42:37,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:42:37,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:42:37,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 359 transitions, 3683 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:42:37,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:42:37,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:42:37,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:42:38,214 INFO L124 PetriNetUnfolderBase]: 745/1448 cut-off events. [2024-06-20 16:42:38,214 INFO L125 PetriNetUnfolderBase]: For 122478/122478 co-relation queries the response was YES. [2024-06-20 16:42:38,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8941 conditions, 1448 events. 745/1448 cut-off events. For 122478/122478 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 8989 event pairs, 76 based on Foata normal form. 1/1448 useless extension candidates. Maximal degree in co-relation 8773. Up to 1030 conditions per place. [2024-06-20 16:42:38,231 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 250 selfloop transitions, 121 changer transitions 0/374 dead transitions. [2024-06-20 16:42:38,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 374 transitions, 4771 flow [2024-06-20 16:42:38,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:42:38,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:42:38,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-20 16:42:38,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41642228739002934 [2024-06-20 16:42:38,232 INFO L175 Difference]: Start difference. First operand has 377 places, 359 transitions, 3683 flow. Second operand 11 states and 142 transitions. [2024-06-20 16:42:38,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 374 transitions, 4771 flow [2024-06-20 16:42:38,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 374 transitions, 4654 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-20 16:42:38,704 INFO L231 Difference]: Finished difference. Result has 379 places, 363 transitions, 3907 flow [2024-06-20 16:42:38,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3566, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3907, PETRI_PLACES=379, PETRI_TRANSITIONS=363} [2024-06-20 16:42:38,704 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 349 predicate places. [2024-06-20 16:42:38,705 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 363 transitions, 3907 flow [2024-06-20 16:42:38,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:42:38,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:42:38,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:42:38,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-20 16:42:38,705 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)] === [2024-06-20 16:42:38,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:42:38,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1933899344, now seen corresponding path program 18 times [2024-06-20 16:42:38,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:42:38,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470918778] [2024-06-20 16:42:38,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:42:38,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:42:38,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:42:40,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:42:40,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:42:40,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470918778] [2024-06-20 16:42:40,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470918778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:42:40,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:42:40,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:42:40,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644654425] [2024-06-20 16:42:40,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:42:40,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:42:40,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:42:40,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:42:40,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:42:40,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:42:40,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 363 transitions, 3907 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:42:40,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:42:40,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:42:40,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:42:40,936 INFO L124 PetriNetUnfolderBase]: 743/1445 cut-off events. [2024-06-20 16:42:40,937 INFO L125 PetriNetUnfolderBase]: For 117226/117226 co-relation queries the response was YES. [2024-06-20 16:42:40,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8938 conditions, 1445 events. 743/1445 cut-off events. For 117226/117226 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 8988 event pairs, 75 based on Foata normal form. 1/1445 useless extension candidates. Maximal degree in co-relation 8768. Up to 1250 conditions per place. [2024-06-20 16:42:40,955 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 317 selfloop transitions, 53 changer transitions 0/373 dead transitions. [2024-06-20 16:42:40,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 373 transitions, 4669 flow [2024-06-20 16:42:40,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:42:40,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:42:40,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-20 16:42:40,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-20 16:42:40,956 INFO L175 Difference]: Start difference. First operand has 379 places, 363 transitions, 3907 flow. Second operand 11 states and 135 transitions. [2024-06-20 16:42:40,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 373 transitions, 4669 flow [2024-06-20 16:42:41,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 373 transitions, 4295 flow, removed 55 selfloop flow, removed 9 redundant places. [2024-06-20 16:42:41,401 INFO L231 Difference]: Finished difference. Result has 381 places, 363 transitions, 3644 flow [2024-06-20 16:42:41,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3533, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3644, PETRI_PLACES=381, PETRI_TRANSITIONS=363} [2024-06-20 16:42:41,401 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 351 predicate places. [2024-06-20 16:42:41,401 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 363 transitions, 3644 flow [2024-06-20 16:42:41,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:42:41,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:42:41,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:42:41,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-20 16:42:41,402 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)] === [2024-06-20 16:42:41,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:42:41,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1976907507, now seen corresponding path program 14 times [2024-06-20 16:42:41,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:42:41,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587280855] [2024-06-20 16:42:41,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:42:41,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:42:41,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:42:42,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:42:42,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:42:42,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587280855] [2024-06-20 16:42:42,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587280855] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:42:42,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:42:42,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:42:42,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610882178] [2024-06-20 16:42:42,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:42:42,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:42:42,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:42:42,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:42:42,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:42:42,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:42:42,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 363 transitions, 3644 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:42:42,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:42:42,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:42:42,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:42:43,436 INFO L124 PetriNetUnfolderBase]: 754/1466 cut-off events. [2024-06-20 16:42:43,436 INFO L125 PetriNetUnfolderBase]: For 142048/142048 co-relation queries the response was YES. [2024-06-20 16:42:43,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9195 conditions, 1466 events. 754/1466 cut-off events. For 142048/142048 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 9131 event pairs, 79 based on Foata normal form. 2/1467 useless extension candidates. Maximal degree in co-relation 9024. Up to 1095 conditions per place. [2024-06-20 16:42:43,452 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 266 selfloop transitions, 109 changer transitions 0/378 dead transitions. [2024-06-20 16:42:43,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 378 transitions, 4760 flow [2024-06-20 16:42:43,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:42:43,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:42:43,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-20 16:42:43,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41055718475073316 [2024-06-20 16:42:43,453 INFO L175 Difference]: Start difference. First operand has 381 places, 363 transitions, 3644 flow. Second operand 11 states and 140 transitions. [2024-06-20 16:42:43,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 378 transitions, 4760 flow [2024-06-20 16:42:43,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 378 transitions, 4621 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-20 16:42:43,978 INFO L231 Difference]: Finished difference. Result has 381 places, 365 transitions, 3821 flow [2024-06-20 16:42:43,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3505, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3821, PETRI_PLACES=381, PETRI_TRANSITIONS=365} [2024-06-20 16:42:43,978 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 351 predicate places. [2024-06-20 16:42:43,978 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 365 transitions, 3821 flow [2024-06-20 16:42:43,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:42:43,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:42:43,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:42:43,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-20 16:42:43,979 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)] === [2024-06-20 16:42:43,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:42:43,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1976631018, now seen corresponding path program 19 times [2024-06-20 16:42:43,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:42:43,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343499340] [2024-06-20 16:42:43,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:42:43,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:42:43,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:42:45,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:42:45,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:42:45,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343499340] [2024-06-20 16:42:45,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343499340] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:42:45,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:42:45,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:42:45,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148538245] [2024-06-20 16:42:45,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:42:45,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:42:45,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:42:45,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:42:45,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:42:45,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:42:45,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 365 transitions, 3821 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:42:45,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:42:45,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:42:45,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:42:46,366 INFO L124 PetriNetUnfolderBase]: 752/1463 cut-off events. [2024-06-20 16:42:46,366 INFO L125 PetriNetUnfolderBase]: For 129481/129481 co-relation queries the response was YES. [2024-06-20 16:42:46,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9167 conditions, 1463 events. 752/1463 cut-off events. For 129481/129481 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 9138 event pairs, 78 based on Foata normal form. 1/1463 useless extension candidates. Maximal degree in co-relation 8995. Up to 1088 conditions per place. [2024-06-20 16:42:46,383 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 264 selfloop transitions, 108 changer transitions 0/375 dead transitions. [2024-06-20 16:42:46,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 375 transitions, 4587 flow [2024-06-20 16:42:46,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:42:46,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:42:46,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-20 16:42:46,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4046920821114369 [2024-06-20 16:42:46,384 INFO L175 Difference]: Start difference. First operand has 381 places, 365 transitions, 3821 flow. Second operand 11 states and 138 transitions. [2024-06-20 16:42:46,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 375 transitions, 4587 flow [2024-06-20 16:42:46,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 375 transitions, 4354 flow, removed 50 selfloop flow, removed 7 redundant places. [2024-06-20 16:42:46,889 INFO L231 Difference]: Finished difference. Result has 385 places, 365 transitions, 3809 flow [2024-06-20 16:42:46,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3588, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3809, PETRI_PLACES=385, PETRI_TRANSITIONS=365} [2024-06-20 16:42:46,889 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 355 predicate places. [2024-06-20 16:42:46,889 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 365 transitions, 3809 flow [2024-06-20 16:42:46,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:42:46,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:42:46,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:42:46,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-20 16:42:46,890 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)] === [2024-06-20 16:42:46,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:42:46,891 INFO L85 PathProgramCache]: Analyzing trace with hash -48746327, now seen corresponding path program 15 times [2024-06-20 16:42:46,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:42:46,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991516989] [2024-06-20 16:42:46,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:42:46,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:42:46,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:42:48,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:42:48,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:42:48,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991516989] [2024-06-20 16:42:48,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991516989] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:42:48,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:42:48,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:42:48,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368587084] [2024-06-20 16:42:48,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:42:48,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:42:48,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:42:48,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:42:48,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:42:48,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:42:48,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 365 transitions, 3809 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:42:48,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:42:48,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:42:48,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:42:49,026 INFO L124 PetriNetUnfolderBase]: 756/1471 cut-off events. [2024-06-20 16:42:49,026 INFO L125 PetriNetUnfolderBase]: For 138296/138296 co-relation queries the response was YES. [2024-06-20 16:42:49,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9272 conditions, 1471 events. 756/1471 cut-off events. For 138296/138296 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 9186 event pairs, 80 based on Foata normal form. 2/1472 useless extension candidates. Maximal degree in co-relation 9099. Up to 1170 conditions per place. [2024-06-20 16:42:49,043 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 282 selfloop transitions, 92 changer transitions 0/377 dead transitions. [2024-06-20 16:42:49,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 377 transitions, 4621 flow [2024-06-20 16:42:49,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:42:49,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:42:49,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-20 16:42:49,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-20 16:42:49,044 INFO L175 Difference]: Start difference. First operand has 385 places, 365 transitions, 3809 flow. Second operand 11 states and 136 transitions. [2024-06-20 16:42:49,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 377 transitions, 4621 flow [2024-06-20 16:42:49,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 377 transitions, 4406 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-20 16:42:49,583 INFO L231 Difference]: Finished difference. Result has 387 places, 366 transitions, 3824 flow [2024-06-20 16:42:49,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3594, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3824, PETRI_PLACES=387, PETRI_TRANSITIONS=366} [2024-06-20 16:42:49,583 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 357 predicate places. [2024-06-20 16:42:49,583 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 366 transitions, 3824 flow [2024-06-20 16:42:49,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:42:49,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:42:49,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:42:49,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-20 16:42:49,584 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)] === [2024-06-20 16:42:49,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:42:49,584 INFO L85 PathProgramCache]: Analyzing trace with hash -48486857, now seen corresponding path program 16 times [2024-06-20 16:42:49,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:42:49,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363902015] [2024-06-20 16:42:49,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:42:49,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:42:49,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:42:50,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:42:50,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:42:50,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363902015] [2024-06-20 16:42:50,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363902015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:42:50,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:42:50,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:42:50,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613225956] [2024-06-20 16:42:50,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:42:50,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:42:50,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:42:50,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:42:50,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:42:51,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:42:51,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 366 transitions, 3824 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:42:51,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:42:51,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:42:51,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:42:51,571 INFO L124 PetriNetUnfolderBase]: 753/1466 cut-off events. [2024-06-20 16:42:51,571 INFO L125 PetriNetUnfolderBase]: For 124576/124576 co-relation queries the response was YES. [2024-06-20 16:42:51,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8966 conditions, 1466 events. 753/1466 cut-off events. For 124576/124576 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 9181 event pairs, 79 based on Foata normal form. 2/1467 useless extension candidates. Maximal degree in co-relation 8792. Up to 1156 conditions per place. [2024-06-20 16:42:51,588 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 277 selfloop transitions, 97 changer transitions 0/377 dead transitions. [2024-06-20 16:42:51,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 377 transitions, 4596 flow [2024-06-20 16:42:51,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:42:51,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:42:51,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-20 16:42:51,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40175953079178883 [2024-06-20 16:42:51,589 INFO L175 Difference]: Start difference. First operand has 387 places, 366 transitions, 3824 flow. Second operand 11 states and 137 transitions. [2024-06-20 16:42:51,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 377 transitions, 4596 flow [2024-06-20 16:42:52,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 377 transitions, 4341 flow, removed 35 selfloop flow, removed 9 redundant places. [2024-06-20 16:42:52,090 INFO L231 Difference]: Finished difference. Result has 389 places, 366 transitions, 3767 flow [2024-06-20 16:42:52,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3569, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3767, PETRI_PLACES=389, PETRI_TRANSITIONS=366} [2024-06-20 16:42:52,090 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 359 predicate places. [2024-06-20 16:42:52,090 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 366 transitions, 3767 flow [2024-06-20 16:42:52,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:42:52,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:42:52,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:42:52,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-20 16:42:52,091 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)] === [2024-06-20 16:42:52,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:42:52,092 INFO L85 PathProgramCache]: Analyzing trace with hash -48487136, now seen corresponding path program 20 times [2024-06-20 16:42:52,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:42:52,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837110246] [2024-06-20 16:42:52,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:42:52,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:42:52,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:42:53,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:42:53,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:42:53,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837110246] [2024-06-20 16:42:53,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837110246] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:42:53,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:42:53,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:42:53,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145759994] [2024-06-20 16:42:53,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:42:53,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:42:53,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:42:53,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:42:53,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:42:53,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:42:53,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 366 transitions, 3767 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) [2024-06-20 16:42:53,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:42:53,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:42:53,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:42:53,767 INFO L124 PetriNetUnfolderBase]: 751/1463 cut-off events. [2024-06-20 16:42:53,768 INFO L125 PetriNetUnfolderBase]: For 108785/108785 co-relation queries the response was YES. [2024-06-20 16:42:53,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8689 conditions, 1463 events. 751/1463 cut-off events. For 108785/108785 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 9160 event pairs, 79 based on Foata normal form. 1/1463 useless extension candidates. Maximal degree in co-relation 8514. Up to 905 conditions per place. [2024-06-20 16:42:53,785 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 216 selfloop transitions, 156 changer transitions 0/375 dead transitions. [2024-06-20 16:42:53,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 375 transitions, 4531 flow [2024-06-20 16:42:53,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:42:53,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:42:53,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-20 16:42:53,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.432258064516129 [2024-06-20 16:42:53,786 INFO L175 Difference]: Start difference. First operand has 389 places, 366 transitions, 3767 flow. Second operand 10 states and 134 transitions. [2024-06-20 16:42:53,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 375 transitions, 4531 flow [2024-06-20 16:42:54,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 375 transitions, 4259 flow, removed 26 selfloop flow, removed 12 redundant places. [2024-06-20 16:42:54,258 INFO L231 Difference]: Finished difference. Result has 387 places, 366 transitions, 3818 flow [2024-06-20 16:42:54,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3495, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3818, PETRI_PLACES=387, PETRI_TRANSITIONS=366} [2024-06-20 16:42:54,258 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 357 predicate places. [2024-06-20 16:42:54,258 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 366 transitions, 3818 flow [2024-06-20 16:42:54,258 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) [2024-06-20 16:42:54,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:42:54,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:42:54,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-20 16:42:54,259 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)] === [2024-06-20 16:42:54,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:42:54,259 INFO L85 PathProgramCache]: Analyzing trace with hash 524424941, now seen corresponding path program 17 times [2024-06-20 16:42:54,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:42:54,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488010523] [2024-06-20 16:42:54,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:42:54,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:42:54,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:42:55,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:42:55,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:42:55,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488010523] [2024-06-20 16:42:55,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488010523] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:42:55,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:42:55,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:42:55,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89307290] [2024-06-20 16:42:55,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:42:55,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:42:55,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:42:55,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:42:55,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:42:55,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:42:55,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 366 transitions, 3818 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:42:55,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:42:55,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:42:55,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:42:56,414 INFO L124 PetriNetUnfolderBase]: 762/1484 cut-off events. [2024-06-20 16:42:56,414 INFO L125 PetriNetUnfolderBase]: For 136486/136486 co-relation queries the response was YES. [2024-06-20 16:42:56,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9279 conditions, 1484 events. 762/1484 cut-off events. For 136486/136486 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 9295 event pairs, 136 based on Foata normal form. 2/1485 useless extension candidates. Maximal degree in co-relation 9104. Up to 1294 conditions per place. [2024-06-20 16:42:56,432 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 350 selfloop transitions, 30 changer transitions 0/383 dead transitions. [2024-06-20 16:42:56,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 383 transitions, 4962 flow [2024-06-20 16:42:56,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:42:56,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:42:56,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-20 16:42:56,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3736559139784946 [2024-06-20 16:42:56,433 INFO L175 Difference]: Start difference. First operand has 387 places, 366 transitions, 3818 flow. Second operand 12 states and 139 transitions. [2024-06-20 16:42:56,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 383 transitions, 4962 flow [2024-06-20 16:42:56,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 383 transitions, 4600 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-20 16:42:56,945 INFO L231 Difference]: Finished difference. Result has 388 places, 368 transitions, 3622 flow [2024-06-20 16:42:56,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3460, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3622, PETRI_PLACES=388, PETRI_TRANSITIONS=368} [2024-06-20 16:42:56,945 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 358 predicate places. [2024-06-20 16:42:56,946 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 368 transitions, 3622 flow [2024-06-20 16:42:56,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:42:56,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:42:56,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:42:56,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-20 16:42:56,946 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)] === [2024-06-20 16:42:56,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:42:56,946 INFO L85 PathProgramCache]: Analyzing trace with hash 513383051, now seen corresponding path program 18 times [2024-06-20 16:42:56,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:42:56,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788824227] [2024-06-20 16:42:56,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:42:56,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:42:56,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:42:58,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:42:58,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:42:58,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788824227] [2024-06-20 16:42:58,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788824227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:42:58,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:42:58,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:42:58,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509204812] [2024-06-20 16:42:58,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:42:58,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:42:58,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:42:58,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:42:58,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:42:58,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:42:58,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 368 transitions, 3622 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:42:58,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:42:58,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:42:58,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:42:58,951 INFO L124 PetriNetUnfolderBase]: 759/1479 cut-off events. [2024-06-20 16:42:58,952 INFO L125 PetriNetUnfolderBase]: For 118046/118046 co-relation queries the response was YES. [2024-06-20 16:42:58,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8665 conditions, 1479 events. 759/1479 cut-off events. For 118046/118046 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 9257 event pairs, 137 based on Foata normal form. 2/1480 useless extension candidates. Maximal degree in co-relation 8491. Up to 1336 conditions per place. [2024-06-20 16:42:58,978 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 351 selfloop transitions, 27 changer transitions 0/381 dead transitions. [2024-06-20 16:42:58,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 381 transitions, 4406 flow [2024-06-20 16:42:58,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:42:58,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:42:58,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-20 16:42:58,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3736559139784946 [2024-06-20 16:42:58,980 INFO L175 Difference]: Start difference. First operand has 388 places, 368 transitions, 3622 flow. Second operand 12 states and 139 transitions. [2024-06-20 16:42:58,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 381 transitions, 4406 flow [2024-06-20 16:42:59,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 381 transitions, 4285 flow, removed 44 selfloop flow, removed 8 redundant places. [2024-06-20 16:42:59,534 INFO L231 Difference]: Finished difference. Result has 392 places, 368 transitions, 3559 flow [2024-06-20 16:42:59,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3501, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3559, PETRI_PLACES=392, PETRI_TRANSITIONS=368} [2024-06-20 16:42:59,535 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 362 predicate places. [2024-06-20 16:42:59,535 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 368 transitions, 3559 flow [2024-06-20 16:42:59,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:42:59,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:42:59,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:42:59,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-20 16:42:59,536 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)] === [2024-06-20 16:42:59,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:42:59,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1624710433, now seen corresponding path program 19 times [2024-06-20 16:42:59,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:42:59,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002190914] [2024-06-20 16:42:59,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:42:59,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:42:59,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:43:00,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:43:00,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:43:00,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002190914] [2024-06-20 16:43:00,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002190914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:43:00,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:43:00,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:43:00,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757180572] [2024-06-20 16:43:00,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:43:00,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:43:00,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:43:00,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:43:00,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:43:01,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:43:01,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 368 transitions, 3559 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:01,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:43:01,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:43:01,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:43:01,520 INFO L124 PetriNetUnfolderBase]: 790/1539 cut-off events. [2024-06-20 16:43:01,521 INFO L125 PetriNetUnfolderBase]: For 166887/166887 co-relation queries the response was YES. [2024-06-20 16:43:01,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9629 conditions, 1539 events. 790/1539 cut-off events. For 166887/166887 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 9658 event pairs, 84 based on Foata normal form. 2/1540 useless extension candidates. Maximal degree in co-relation 9453. Up to 1188 conditions per place. [2024-06-20 16:43:01,540 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 321 selfloop transitions, 78 changer transitions 0/402 dead transitions. [2024-06-20 16:43:01,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 402 transitions, 4822 flow [2024-06-20 16:43:01,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:43:01,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:43:01,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 155 transitions. [2024-06-20 16:43:01,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-20 16:43:01,541 INFO L175 Difference]: Start difference. First operand has 392 places, 368 transitions, 3559 flow. Second operand 12 states and 155 transitions. [2024-06-20 16:43:01,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 402 transitions, 4822 flow [2024-06-20 16:43:02,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 402 transitions, 4750 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-20 16:43:02,387 INFO L231 Difference]: Finished difference. Result has 397 places, 376 transitions, 3803 flow [2024-06-20 16:43:02,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3487, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3803, PETRI_PLACES=397, PETRI_TRANSITIONS=376} [2024-06-20 16:43:02,387 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 367 predicate places. [2024-06-20 16:43:02,387 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 376 transitions, 3803 flow [2024-06-20 16:43:02,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:02,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:43:02,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:43:02,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-20 16:43:02,388 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)] === [2024-06-20 16:43:02,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:43:02,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1067010740, now seen corresponding path program 1 times [2024-06-20 16:43:02,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:43:02,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308912147] [2024-06-20 16:43:02,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:43:02,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:43:02,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:43:03,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:43:03,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:43:03,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308912147] [2024-06-20 16:43:03,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308912147] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:43:03,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:43:03,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:43:03,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196647469] [2024-06-20 16:43:03,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:43:03,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:43:03,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:43:03,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:43:03,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:43:03,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:43:03,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 376 transitions, 3803 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:03,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:43:03,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:43:03,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:43:04,384 INFO L124 PetriNetUnfolderBase]: 802/1568 cut-off events. [2024-06-20 16:43:04,384 INFO L125 PetriNetUnfolderBase]: For 217374/217374 co-relation queries the response was YES. [2024-06-20 16:43:04,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9993 conditions, 1568 events. 802/1568 cut-off events. For 217374/217374 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 9884 event pairs, 99 based on Foata normal form. 8/1575 useless extension candidates. Maximal degree in co-relation 9813. Up to 1372 conditions per place. [2024-06-20 16:43:04,405 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 354 selfloop transitions, 28 changer transitions 13/398 dead transitions. [2024-06-20 16:43:04,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 398 transitions, 4683 flow [2024-06-20 16:43:04,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:43:04,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:43:04,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-20 16:43:04,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-20 16:43:04,406 INFO L175 Difference]: Start difference. First operand has 397 places, 376 transitions, 3803 flow. Second operand 11 states and 135 transitions. [2024-06-20 16:43:04,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 398 transitions, 4683 flow [2024-06-20 16:43:05,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 398 transitions, 4262 flow, removed 68 selfloop flow, removed 13 redundant places. [2024-06-20 16:43:05,099 INFO L231 Difference]: Finished difference. Result has 395 places, 372 transitions, 3415 flow [2024-06-20 16:43:05,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3382, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3415, PETRI_PLACES=395, PETRI_TRANSITIONS=372} [2024-06-20 16:43:05,100 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 365 predicate places. [2024-06-20 16:43:05,100 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 372 transitions, 3415 flow [2024-06-20 16:43:05,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:05,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:43:05,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:43:05,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-20 16:43:05,100 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)] === [2024-06-20 16:43:05,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:43:05,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1071772340, now seen corresponding path program 2 times [2024-06-20 16:43:05,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:43:05,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360505136] [2024-06-20 16:43:05,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:43:05,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:43:05,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:43:06,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:43:06,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:43:06,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360505136] [2024-06-20 16:43:06,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360505136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:43:06,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:43:06,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:43:06,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875078447] [2024-06-20 16:43:06,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:43:06,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:43:06,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:43:06,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:43:06,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:43:06,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:43:06,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 372 transitions, 3415 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:06,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:43:06,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:43:06,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:43:06,978 INFO L124 PetriNetUnfolderBase]: 784/1538 cut-off events. [2024-06-20 16:43:06,979 INFO L125 PetriNetUnfolderBase]: For 237000/237000 co-relation queries the response was YES. [2024-06-20 16:43:06,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8200 conditions, 1538 events. 784/1538 cut-off events. For 237000/237000 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 9737 event pairs, 89 based on Foata normal form. 18/1555 useless extension candidates. Maximal degree in co-relation 8028. Up to 1296 conditions per place. [2024-06-20 16:43:06,997 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 343 selfloop transitions, 30 changer transitions 17/393 dead transitions. [2024-06-20 16:43:06,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 393 transitions, 4327 flow [2024-06-20 16:43:06,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:43:06,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:43:06,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-20 16:43:06,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-20 16:43:06,998 INFO L175 Difference]: Start difference. First operand has 395 places, 372 transitions, 3415 flow. Second operand 11 states and 136 transitions. [2024-06-20 16:43:06,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 393 transitions, 4327 flow [2024-06-20 16:43:07,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 393 transitions, 4168 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-20 16:43:07,399 INFO L231 Difference]: Finished difference. Result has 389 places, 362 transitions, 3216 flow [2024-06-20 16:43:07,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3258, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3216, PETRI_PLACES=389, PETRI_TRANSITIONS=362} [2024-06-20 16:43:07,400 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 359 predicate places. [2024-06-20 16:43:07,400 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 362 transitions, 3216 flow [2024-06-20 16:43:07,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:07,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:43:07,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:43:07,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-20 16:43:07,400 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)] === [2024-06-20 16:43:07,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:43:07,401 INFO L85 PathProgramCache]: Analyzing trace with hash -767007420, now seen corresponding path program 3 times [2024-06-20 16:43:07,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:43:07,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296596723] [2024-06-20 16:43:07,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:43:07,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:43:07,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:43:08,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:43:08,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:43:08,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296596723] [2024-06-20 16:43:08,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296596723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:43:08,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:43:08,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:43:08,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927737563] [2024-06-20 16:43:08,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:43:08,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:43:08,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:43:08,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:43:08,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:43:08,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:43:08,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 362 transitions, 3216 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:08,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:43:08,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:43:08,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:43:09,288 INFO L124 PetriNetUnfolderBase]: 752/1478 cut-off events. [2024-06-20 16:43:09,289 INFO L125 PetriNetUnfolderBase]: For 144601/144601 co-relation queries the response was YES. [2024-06-20 16:43:09,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7559 conditions, 1478 events. 752/1478 cut-off events. For 144601/144601 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 9286 event pairs, 79 based on Foata normal form. 8/1485 useless extension candidates. Maximal degree in co-relation 7391. Up to 1284 conditions per place. [2024-06-20 16:43:09,304 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 340 selfloop transitions, 22 changer transitions 18/383 dead transitions. [2024-06-20 16:43:09,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 383 transitions, 4062 flow [2024-06-20 16:43:09,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:43:09,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:43:09,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-20 16:43:09,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-20 16:43:09,305 INFO L175 Difference]: Start difference. First operand has 389 places, 362 transitions, 3216 flow. Second operand 11 states and 133 transitions. [2024-06-20 16:43:09,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 383 transitions, 4062 flow [2024-06-20 16:43:09,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 383 transitions, 3891 flow, removed 7 selfloop flow, removed 16 redundant places. [2024-06-20 16:43:09,684 INFO L231 Difference]: Finished difference. Result has 381 places, 353 transitions, 3022 flow [2024-06-20 16:43:09,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3049, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3022, PETRI_PLACES=381, PETRI_TRANSITIONS=353} [2024-06-20 16:43:09,685 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 351 predicate places. [2024-06-20 16:43:09,685 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 353 transitions, 3022 flow [2024-06-20 16:43:09,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:09,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:43:09,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:43:09,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-20 16:43:09,685 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)] === [2024-06-20 16:43:09,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:43:09,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1678527820, now seen corresponding path program 4 times [2024-06-20 16:43:09,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:43:09,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779661249] [2024-06-20 16:43:09,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:43:09,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:43:09,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:43:10,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:43:10,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:43:10,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779661249] [2024-06-20 16:43:10,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779661249] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:43:10,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:43:10,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:43:10,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767218414] [2024-06-20 16:43:10,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:43:10,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:43:10,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:43:10,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:43:10,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:43:10,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:43:10,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 353 transitions, 3022 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:10,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:43:10,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:43:10,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:43:11,412 INFO L124 PetriNetUnfolderBase]: 728/1430 cut-off events. [2024-06-20 16:43:11,412 INFO L125 PetriNetUnfolderBase]: For 97178/97178 co-relation queries the response was YES. [2024-06-20 16:43:11,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7217 conditions, 1430 events. 728/1430 cut-off events. For 97178/97178 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 8941 event pairs, 48 based on Foata normal form. 2/1431 useless extension candidates. Maximal degree in co-relation 7053. Up to 1165 conditions per place. [2024-06-20 16:43:11,436 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 337 selfloop transitions, 34 changer transitions 0/374 dead transitions. [2024-06-20 16:43:11,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 374 transitions, 3832 flow [2024-06-20 16:43:11,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:43:11,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:43:11,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-20 16:43:11,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841642228739003 [2024-06-20 16:43:11,438 INFO L175 Difference]: Start difference. First operand has 381 places, 353 transitions, 3022 flow. Second operand 11 states and 131 transitions. [2024-06-20 16:43:11,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 374 transitions, 3832 flow [2024-06-20 16:43:11,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 374 transitions, 3750 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-20 16:43:11,786 INFO L231 Difference]: Finished difference. Result has 374 places, 354 transitions, 3034 flow [2024-06-20 16:43:11,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2940, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3034, PETRI_PLACES=374, PETRI_TRANSITIONS=354} [2024-06-20 16:43:11,786 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 344 predicate places. [2024-06-20 16:43:11,786 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 354 transitions, 3034 flow [2024-06-20 16:43:11,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:11,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:43:11,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:43:11,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-20 16:43:11,786 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)] === [2024-06-20 16:43:11,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:43:11,787 INFO L85 PathProgramCache]: Analyzing trace with hash 192790734, now seen corresponding path program 5 times [2024-06-20 16:43:11,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:43:11,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301024866] [2024-06-20 16:43:11,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:43:11,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:43:11,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:43:13,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:43:13,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:43:13,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301024866] [2024-06-20 16:43:13,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301024866] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:43:13,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:43:13,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:43:13,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878149799] [2024-06-20 16:43:13,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:43:13,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:43:13,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:43:13,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:43:13,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:43:13,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:43:13,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 354 transitions, 3034 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:13,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:43:13,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:43:13,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:43:13,835 INFO L124 PetriNetUnfolderBase]: 732/1437 cut-off events. [2024-06-20 16:43:13,835 INFO L125 PetriNetUnfolderBase]: For 93929/93929 co-relation queries the response was YES. [2024-06-20 16:43:13,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7252 conditions, 1437 events. 732/1437 cut-off events. For 93929/93929 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 8961 event pairs, 80 based on Foata normal form. 2/1438 useless extension candidates. Maximal degree in co-relation 7092. Up to 1279 conditions per place. [2024-06-20 16:43:13,856 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 337 selfloop transitions, 31 changer transitions 0/371 dead transitions. [2024-06-20 16:43:13,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 371 transitions, 3830 flow [2024-06-20 16:43:13,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:43:13,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:43:13,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-20 16:43:13,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-20 16:43:13,857 INFO L175 Difference]: Start difference. First operand has 374 places, 354 transitions, 3034 flow. Second operand 11 states and 129 transitions. [2024-06-20 16:43:13,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 371 transitions, 3830 flow [2024-06-20 16:43:14,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 371 transitions, 3746 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-20 16:43:14,300 INFO L231 Difference]: Finished difference. Result has 376 places, 355 transitions, 3040 flow [2024-06-20 16:43:14,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2950, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3040, PETRI_PLACES=376, PETRI_TRANSITIONS=355} [2024-06-20 16:43:14,300 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 346 predicate places. [2024-06-20 16:43:14,300 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 355 transitions, 3040 flow [2024-06-20 16:43:14,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:14,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:43:14,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:43:14,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-20 16:43:14,301 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)] === [2024-06-20 16:43:14,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:43:14,302 INFO L85 PathProgramCache]: Analyzing trace with hash 192675414, now seen corresponding path program 6 times [2024-06-20 16:43:14,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:43:14,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046654288] [2024-06-20 16:43:14,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:43:14,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:43:14,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:43:15,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:43:15,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:43:15,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046654288] [2024-06-20 16:43:15,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046654288] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:43:15,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:43:15,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:43:15,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69136248] [2024-06-20 16:43:15,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:43:15,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:43:15,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:43:15,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:43:15,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:43:15,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:43:15,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 355 transitions, 3040 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:15,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:43:15,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:43:15,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:43:16,297 INFO L124 PetriNetUnfolderBase]: 744/1465 cut-off events. [2024-06-20 16:43:16,297 INFO L125 PetriNetUnfolderBase]: For 141196/141196 co-relation queries the response was YES. [2024-06-20 16:43:16,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7343 conditions, 1465 events. 744/1465 cut-off events. For 141196/141196 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 9193 event pairs, 78 based on Foata normal form. 8/1472 useless extension candidates. Maximal degree in co-relation 7182. Up to 1281 conditions per place. [2024-06-20 16:43:16,313 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 334 selfloop transitions, 24 changer transitions 14/375 dead transitions. [2024-06-20 16:43:16,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 375 transitions, 3866 flow [2024-06-20 16:43:16,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:43:16,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:43:16,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-20 16:43:16,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-20 16:43:16,314 INFO L175 Difference]: Start difference. First operand has 376 places, 355 transitions, 3040 flow. Second operand 11 states and 132 transitions. [2024-06-20 16:43:16,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 375 transitions, 3866 flow [2024-06-20 16:43:16,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 375 transitions, 3786 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-20 16:43:16,660 INFO L231 Difference]: Finished difference. Result has 378 places, 350 transitions, 2966 flow [2024-06-20 16:43:16,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2960, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2966, PETRI_PLACES=378, PETRI_TRANSITIONS=350} [2024-06-20 16:43:16,661 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 348 predicate places. [2024-06-20 16:43:16,661 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 350 transitions, 2966 flow [2024-06-20 16:43:16,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:16,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:43:16,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:43:16,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-20 16:43:16,661 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)] === [2024-06-20 16:43:16,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:43:16,661 INFO L85 PathProgramCache]: Analyzing trace with hash 363670794, now seen corresponding path program 7 times [2024-06-20 16:43:16,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:43:16,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301758727] [2024-06-20 16:43:16,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:43:16,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:43:16,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:43:17,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:43:17,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:43:17,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301758727] [2024-06-20 16:43:17,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301758727] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:43:17,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:43:17,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:43:17,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629247335] [2024-06-20 16:43:17,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:43:17,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:43:17,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:43:17,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:43:17,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:43:17,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:43:17,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 350 transitions, 2966 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:17,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:43:17,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:43:17,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:43:18,485 INFO L124 PetriNetUnfolderBase]: 722/1423 cut-off events. [2024-06-20 16:43:18,486 INFO L125 PetriNetUnfolderBase]: For 98469/98469 co-relation queries the response was YES. [2024-06-20 16:43:18,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7140 conditions, 1423 events. 722/1423 cut-off events. For 98469/98469 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 8926 event pairs, 77 based on Foata normal form. 2/1424 useless extension candidates. Maximal degree in co-relation 6978. Up to 1231 conditions per place. [2024-06-20 16:43:18,501 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 317 selfloop transitions, 46 changer transitions 0/366 dead transitions. [2024-06-20 16:43:18,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 366 transitions, 3752 flow [2024-06-20 16:43:18,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:43:18,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:43:18,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-20 16:43:18,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-20 16:43:18,502 INFO L175 Difference]: Start difference. First operand has 378 places, 350 transitions, 2966 flow. Second operand 11 states and 135 transitions. [2024-06-20 16:43:18,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 366 transitions, 3752 flow [2024-06-20 16:43:18,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 366 transitions, 3698 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-20 16:43:18,861 INFO L231 Difference]: Finished difference. Result has 374 places, 351 transitions, 3034 flow [2024-06-20 16:43:18,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2912, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3034, PETRI_PLACES=374, PETRI_TRANSITIONS=351} [2024-06-20 16:43:18,862 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 344 predicate places. [2024-06-20 16:43:18,862 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 351 transitions, 3034 flow [2024-06-20 16:43:18,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:18,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:43:18,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:43:18,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-20 16:43:18,863 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)] === [2024-06-20 16:43:18,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:43:18,863 INFO L85 PathProgramCache]: Analyzing trace with hash 363493164, now seen corresponding path program 8 times [2024-06-20 16:43:18,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:43:18,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065762552] [2024-06-20 16:43:18,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:43:18,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:43:18,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:43:20,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:43:20,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:43:20,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065762552] [2024-06-20 16:43:20,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065762552] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:43:20,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:43:20,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:43:20,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923673400] [2024-06-20 16:43:20,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:43:20,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:43:20,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:43:20,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:43:20,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:43:20,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:43:20,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 351 transitions, 3034 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:20,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:43:20,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:43:20,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:43:21,035 INFO L124 PetriNetUnfolderBase]: 755/1490 cut-off events. [2024-06-20 16:43:21,036 INFO L125 PetriNetUnfolderBase]: For 172510/172510 co-relation queries the response was YES. [2024-06-20 16:43:21,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8826 conditions, 1490 events. 755/1490 cut-off events. For 172510/172510 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 9385 event pairs, 88 based on Foata normal form. 2/1491 useless extension candidates. Maximal degree in co-relation 8666. Up to 1225 conditions per place. [2024-06-20 16:43:21,053 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 322 selfloop transitions, 48 changer transitions 0/373 dead transitions. [2024-06-20 16:43:21,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 373 transitions, 4174 flow [2024-06-20 16:43:21,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:43:21,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:43:21,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-20 16:43:21,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41055718475073316 [2024-06-20 16:43:21,054 INFO L175 Difference]: Start difference. First operand has 374 places, 351 transitions, 3034 flow. Second operand 11 states and 140 transitions. [2024-06-20 16:43:21,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 373 transitions, 4174 flow [2024-06-20 16:43:21,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 373 transitions, 4062 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-20 16:43:21,671 INFO L231 Difference]: Finished difference. Result has 376 places, 353 transitions, 3076 flow [2024-06-20 16:43:21,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2922, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3076, PETRI_PLACES=376, PETRI_TRANSITIONS=353} [2024-06-20 16:43:21,672 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 346 predicate places. [2024-06-20 16:43:21,672 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 353 transitions, 3076 flow [2024-06-20 16:43:21,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:21,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:43:21,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:43:21,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-20 16:43:21,672 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)] === [2024-06-20 16:43:21,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:43:21,673 INFO L85 PathProgramCache]: Analyzing trace with hash 369926904, now seen corresponding path program 9 times [2024-06-20 16:43:21,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:43:21,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836651420] [2024-06-20 16:43:21,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:43:21,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:43:21,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:43:23,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:43:23,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:43:23,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836651420] [2024-06-20 16:43:23,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836651420] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:43:23,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:43:23,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:43:23,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130482640] [2024-06-20 16:43:23,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:43:23,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:43:23,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:43:23,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:43:23,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:43:23,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:43:23,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 353 transitions, 3076 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:23,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:43:23,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:43:23,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:43:23,843 INFO L124 PetriNetUnfolderBase]: 742/1467 cut-off events. [2024-06-20 16:43:23,843 INFO L125 PetriNetUnfolderBase]: For 159538/159538 co-relation queries the response was YES. [2024-06-20 16:43:23,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7451 conditions, 1467 events. 742/1467 cut-off events. For 159538/159538 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 9255 event pairs, 81 based on Foata normal form. 10/1476 useless extension candidates. Maximal degree in co-relation 7290. Up to 1243 conditions per place. [2024-06-20 16:43:23,859 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 320 selfloop transitions, 41 changer transitions 7/371 dead transitions. [2024-06-20 16:43:23,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 371 transitions, 3908 flow [2024-06-20 16:43:23,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:43:23,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:43:23,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-20 16:43:23,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40175953079178883 [2024-06-20 16:43:23,860 INFO L175 Difference]: Start difference. First operand has 376 places, 353 transitions, 3076 flow. Second operand 11 states and 137 transitions. [2024-06-20 16:43:23,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 371 transitions, 3908 flow [2024-06-20 16:43:24,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 371 transitions, 3799 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-20 16:43:24,255 INFO L231 Difference]: Finished difference. Result has 380 places, 349 transitions, 3023 flow [2024-06-20 16:43:24,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2967, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3023, PETRI_PLACES=380, PETRI_TRANSITIONS=349} [2024-06-20 16:43:24,255 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 350 predicate places. [2024-06-20 16:43:24,255 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 349 transitions, 3023 flow [2024-06-20 16:43:24,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:24,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:43:24,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:43:24,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-20 16:43:24,256 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)] === [2024-06-20 16:43:24,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:43:24,256 INFO L85 PathProgramCache]: Analyzing trace with hash 363677738, now seen corresponding path program 1 times [2024-06-20 16:43:24,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:43:24,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934512769] [2024-06-20 16:43:24,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:43:24,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:43:24,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:43:26,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:43:26,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:43:26,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934512769] [2024-06-20 16:43:26,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934512769] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:43:26,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:43:26,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:43:26,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836607047] [2024-06-20 16:43:26,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:43:26,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:43:26,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:43:26,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:43:26,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:43:26,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:43:26,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 349 transitions, 3023 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:26,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:43:26,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:43:26,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:43:27,313 INFO L124 PetriNetUnfolderBase]: 735/1456 cut-off events. [2024-06-20 16:43:27,313 INFO L125 PetriNetUnfolderBase]: For 146138/146138 co-relation queries the response was YES. [2024-06-20 16:43:27,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7380 conditions, 1456 events. 735/1456 cut-off events. For 146138/146138 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 9159 event pairs, 82 based on Foata normal form. 8/1463 useless extension candidates. Maximal degree in co-relation 7217. Up to 1244 conditions per place. [2024-06-20 16:43:27,329 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 318 selfloop transitions, 34 changer transitions 13/368 dead transitions. [2024-06-20 16:43:27,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 368 transitions, 3851 flow [2024-06-20 16:43:27,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:43:27,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:43:27,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-20 16:43:27,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3924731182795699 [2024-06-20 16:43:27,330 INFO L175 Difference]: Start difference. First operand has 380 places, 349 transitions, 3023 flow. Second operand 12 states and 146 transitions. [2024-06-20 16:43:27,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 368 transitions, 3851 flow [2024-06-20 16:43:27,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 368 transitions, 3732 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-20 16:43:27,683 INFO L231 Difference]: Finished difference. Result has 380 places, 343 transitions, 2930 flow [2024-06-20 16:43:27,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2906, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2930, PETRI_PLACES=380, PETRI_TRANSITIONS=343} [2024-06-20 16:43:27,683 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 350 predicate places. [2024-06-20 16:43:27,683 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 343 transitions, 2930 flow [2024-06-20 16:43:27,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:27,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:43:27,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:43:27,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-20 16:43:27,684 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)] === [2024-06-20 16:43:27,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:43:27,684 INFO L85 PathProgramCache]: Analyzing trace with hash 369933848, now seen corresponding path program 2 times [2024-06-20 16:43:27,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:43:27,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972203081] [2024-06-20 16:43:27,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:43:27,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:43:27,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:43:29,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:43:29,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:43:29,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972203081] [2024-06-20 16:43:29,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972203081] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:43:29,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:43:29,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:43:29,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58461636] [2024-06-20 16:43:29,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:43:29,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:43:29,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:43:29,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:43:29,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:43:29,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:43:29,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 343 transitions, 2930 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:29,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:43:29,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:43:29,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:43:29,954 INFO L124 PetriNetUnfolderBase]: 723/1440 cut-off events. [2024-06-20 16:43:29,954 INFO L125 PetriNetUnfolderBase]: For 147880/147880 co-relation queries the response was YES. [2024-06-20 16:43:29,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7207 conditions, 1440 events. 723/1440 cut-off events. For 147880/147880 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 9072 event pairs, 83 based on Foata normal form. 8/1447 useless extension candidates. Maximal degree in co-relation 7044. Up to 1221 conditions per place. [2024-06-20 16:43:29,969 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 315 selfloop transitions, 30 changer transitions 14/362 dead transitions. [2024-06-20 16:43:29,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 362 transitions, 3744 flow [2024-06-20 16:43:29,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:43:29,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:43:29,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-20 16:43:29,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3897849462365591 [2024-06-20 16:43:29,970 INFO L175 Difference]: Start difference. First operand has 380 places, 343 transitions, 2930 flow. Second operand 12 states and 145 transitions. [2024-06-20 16:43:29,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 362 transitions, 3744 flow [2024-06-20 16:43:30,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 362 transitions, 3652 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-06-20 16:43:30,304 INFO L231 Difference]: Finished difference. Result has 373 places, 336 transitions, 2846 flow [2024-06-20 16:43:30,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2838, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2846, PETRI_PLACES=373, PETRI_TRANSITIONS=336} [2024-06-20 16:43:30,304 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 343 predicate places. [2024-06-20 16:43:30,304 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 336 transitions, 2846 flow [2024-06-20 16:43:30,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:30,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:43:30,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:43:30,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-20 16:43:30,305 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)] === [2024-06-20 16:43:30,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:43:30,305 INFO L85 PathProgramCache]: Analyzing trace with hash 370172858, now seen corresponding path program 3 times [2024-06-20 16:43:30,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:43:30,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354851856] [2024-06-20 16:43:30,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:43:30,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:43:30,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:43:32,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:43:32,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:43:32,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354851856] [2024-06-20 16:43:32,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354851856] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:43:32,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:43:32,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:43:32,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29665883] [2024-06-20 16:43:32,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:43:32,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:43:32,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:43:32,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:43:32,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:43:32,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:43:32,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 336 transitions, 2846 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:32,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:43:32,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:43:32,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:43:32,811 INFO L124 PetriNetUnfolderBase]: 705/1408 cut-off events. [2024-06-20 16:43:32,812 INFO L125 PetriNetUnfolderBase]: For 123313/123313 co-relation queries the response was YES. [2024-06-20 16:43:32,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7004 conditions, 1408 events. 705/1408 cut-off events. For 123313/123313 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 8826 event pairs, 74 based on Foata normal form. 6/1413 useless extension candidates. Maximal degree in co-relation 6844. Up to 1180 conditions per place. [2024-06-20 16:43:32,826 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 309 selfloop transitions, 27 changer transitions 15/354 dead transitions. [2024-06-20 16:43:32,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 354 transitions, 3628 flow [2024-06-20 16:43:32,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:43:32,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:43:32,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-20 16:43:32,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-20 16:43:32,827 INFO L175 Difference]: Start difference. First operand has 373 places, 336 transitions, 2846 flow. Second operand 11 states and 133 transitions. [2024-06-20 16:43:32,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 354 transitions, 3628 flow [2024-06-20 16:43:33,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 354 transitions, 3560 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-20 16:43:33,184 INFO L231 Difference]: Finished difference. Result has 366 places, 328 transitions, 2762 flow [2024-06-20 16:43:33,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2778, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2762, PETRI_PLACES=366, PETRI_TRANSITIONS=328} [2024-06-20 16:43:33,184 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 336 predicate places. [2024-06-20 16:43:33,184 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 328 transitions, 2762 flow [2024-06-20 16:43:33,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:33,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:43:33,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:43:33,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-20 16:43:33,184 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)] === [2024-06-20 16:43:33,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:43:33,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1720823116, now seen corresponding path program 10 times [2024-06-20 16:43:33,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:43:33,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416109092] [2024-06-20 16:43:33,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:43:33,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:43:33,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:43:34,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:43:34,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:43:34,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416109092] [2024-06-20 16:43:34,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416109092] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:43:34,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:43:34,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:43:34,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382121148] [2024-06-20 16:43:34,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:43:34,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:43:34,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:43:34,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:43:34,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:43:34,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:43:34,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 328 transitions, 2762 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:34,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:43:34,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:43:34,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:43:35,273 INFO L124 PetriNetUnfolderBase]: 697/1393 cut-off events. [2024-06-20 16:43:35,273 INFO L125 PetriNetUnfolderBase]: For 147214/147214 co-relation queries the response was YES. [2024-06-20 16:43:35,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6935 conditions, 1393 events. 697/1393 cut-off events. For 147214/147214 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 8670 event pairs, 80 based on Foata normal form. 10/1402 useless extension candidates. Maximal degree in co-relation 6778. Up to 1026 conditions per place. [2024-06-20 16:43:35,287 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 251 selfloop transitions, 82 changer transitions 9/345 dead transitions. [2024-06-20 16:43:35,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 345 transitions, 3558 flow [2024-06-20 16:43:35,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:43:35,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:43:35,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-20 16:43:35,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41348973607038125 [2024-06-20 16:43:35,288 INFO L175 Difference]: Start difference. First operand has 366 places, 328 transitions, 2762 flow. Second operand 11 states and 141 transitions. [2024-06-20 16:43:35,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 345 transitions, 3558 flow [2024-06-20 16:43:35,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 345 transitions, 3481 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-06-20 16:43:35,659 INFO L231 Difference]: Finished difference. Result has 360 places, 323 transitions, 2839 flow [2024-06-20 16:43:35,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2689, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2839, PETRI_PLACES=360, PETRI_TRANSITIONS=323} [2024-06-20 16:43:35,660 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 330 predicate places. [2024-06-20 16:43:35,660 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 323 transitions, 2839 flow [2024-06-20 16:43:35,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:35,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:43:35,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:43:35,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-20 16:43:35,661 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)] === [2024-06-20 16:43:35,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:43:35,661 INFO L85 PathProgramCache]: Analyzing trace with hash 875082352, now seen corresponding path program 11 times [2024-06-20 16:43:35,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:43:35,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787915915] [2024-06-20 16:43:35,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:43:35,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:43:35,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:43:36,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:43:36,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:43:36,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787915915] [2024-06-20 16:43:36,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787915915] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:43:36,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:43:36,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:43:36,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057312844] [2024-06-20 16:43:36,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:43:36,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:43:36,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:43:36,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:43:36,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:43:36,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:43:36,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 323 transitions, 2839 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:36,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:43:36,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:43:36,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:43:37,460 INFO L124 PetriNetUnfolderBase]: 678/1354 cut-off events. [2024-06-20 16:43:37,460 INFO L125 PetriNetUnfolderBase]: For 88438/88438 co-relation queries the response was YES. [2024-06-20 16:43:37,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6853 conditions, 1354 events. 678/1354 cut-off events. For 88438/88438 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 8444 event pairs, 76 based on Foata normal form. 2/1355 useless extension candidates. Maximal degree in co-relation 6699. Up to 1034 conditions per place. [2024-06-20 16:43:37,474 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 252 selfloop transitions, 82 changer transitions 0/337 dead transitions. [2024-06-20 16:43:37,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 337 transitions, 3563 flow [2024-06-20 16:43:37,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:43:37,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:43:37,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-20 16:43:37,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40762463343108507 [2024-06-20 16:43:37,475 INFO L175 Difference]: Start difference. First operand has 360 places, 323 transitions, 2839 flow. Second operand 11 states and 139 transitions. [2024-06-20 16:43:37,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 337 transitions, 3563 flow [2024-06-20 16:43:37,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 337 transitions, 3375 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-20 16:43:37,795 INFO L231 Difference]: Finished difference. Result has 361 places, 324 transitions, 2847 flow [2024-06-20 16:43:37,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2651, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2847, PETRI_PLACES=361, PETRI_TRANSITIONS=324} [2024-06-20 16:43:37,795 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 331 predicate places. [2024-06-20 16:43:37,796 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 324 transitions, 2847 flow [2024-06-20 16:43:37,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:37,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:43:37,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:43:37,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-20 16:43:37,796 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)] === [2024-06-20 16:43:37,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:43:37,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1008483472, now seen corresponding path program 12 times [2024-06-20 16:43:37,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:43:37,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115115308] [2024-06-20 16:43:37,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:43:37,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:43:37,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:43:39,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:43:39,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:43:39,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115115308] [2024-06-20 16:43:39,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115115308] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:43:39,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:43:39,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:43:39,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903525590] [2024-06-20 16:43:39,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:43:39,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:43:39,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:43:39,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:43:39,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:43:39,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:43:39,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 324 transitions, 2847 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:39,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:43:39,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:43:39,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:43:39,658 INFO L124 PetriNetUnfolderBase]: 689/1375 cut-off events. [2024-06-20 16:43:39,658 INFO L125 PetriNetUnfolderBase]: For 104620/104620 co-relation queries the response was YES. [2024-06-20 16:43:39,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7242 conditions, 1375 events. 689/1375 cut-off events. For 104620/104620 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 8561 event pairs, 77 based on Foata normal form. 2/1376 useless extension candidates. Maximal degree in co-relation 7087. Up to 1189 conditions per place. [2024-06-20 16:43:39,673 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 301 selfloop transitions, 37 changer transitions 2/343 dead transitions. [2024-06-20 16:43:39,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 343 transitions, 3879 flow [2024-06-20 16:43:39,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:43:39,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:43:39,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-20 16:43:39,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-20 16:43:39,674 INFO L175 Difference]: Start difference. First operand has 361 places, 324 transitions, 2847 flow. Second operand 11 states and 132 transitions. [2024-06-20 16:43:39,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 343 transitions, 3879 flow [2024-06-20 16:43:40,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 343 transitions, 3693 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-20 16:43:40,129 INFO L231 Difference]: Finished difference. Result has 364 places, 326 transitions, 2807 flow [2024-06-20 16:43:40,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2661, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2807, PETRI_PLACES=364, PETRI_TRANSITIONS=326} [2024-06-20 16:43:40,129 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 334 predicate places. [2024-06-20 16:43:40,129 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 326 transitions, 2807 flow [2024-06-20 16:43:40,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:40,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:43:40,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:43:40,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-20 16:43:40,130 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)] === [2024-06-20 16:43:40,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:43:40,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1008305842, now seen corresponding path program 13 times [2024-06-20 16:43:40,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:43:40,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135516083] [2024-06-20 16:43:40,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:43:40,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:43:40,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:43:41,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:43:41,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:43:41,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135516083] [2024-06-20 16:43:41,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135516083] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:43:41,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:43:41,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:43:41,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451944000] [2024-06-20 16:43:41,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:43:41,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:43:41,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:43:41,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:43:41,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:43:41,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:43:41,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 326 transitions, 2807 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:41,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:43:41,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:43:41,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:43:42,146 INFO L124 PetriNetUnfolderBase]: 672/1340 cut-off events. [2024-06-20 16:43:42,146 INFO L125 PetriNetUnfolderBase]: For 131034/131034 co-relation queries the response was YES. [2024-06-20 16:43:42,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6638 conditions, 1340 events. 672/1340 cut-off events. For 131034/131034 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 8343 event pairs, 76 based on Foata normal form. 8/1347 useless extension candidates. Maximal degree in co-relation 6481. Up to 1149 conditions per place. [2024-06-20 16:43:42,160 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 296 selfloop transitions, 32 changer transitions 10/341 dead transitions. [2024-06-20 16:43:42,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 341 transitions, 3529 flow [2024-06-20 16:43:42,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:43:42,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:43:42,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-20 16:43:42,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-20 16:43:42,161 INFO L175 Difference]: Start difference. First operand has 364 places, 326 transitions, 2807 flow. Second operand 11 states and 130 transitions. [2024-06-20 16:43:42,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 341 transitions, 3529 flow [2024-06-20 16:43:42,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 341 transitions, 3417 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-20 16:43:42,462 INFO L231 Difference]: Finished difference. Result has 369 places, 321 transitions, 2713 flow [2024-06-20 16:43:42,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2695, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2713, PETRI_PLACES=369, PETRI_TRANSITIONS=321} [2024-06-20 16:43:42,463 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 339 predicate places. [2024-06-20 16:43:42,463 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 321 transitions, 2713 flow [2024-06-20 16:43:42,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:42,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:43:42,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:43:42,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-20 16:43:42,464 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)] === [2024-06-20 16:43:42,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:43:42,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1013067442, now seen corresponding path program 14 times [2024-06-20 16:43:42,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:43:42,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945594183] [2024-06-20 16:43:42,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:43:42,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:43:42,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:43:43,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:43:43,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:43:43,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945594183] [2024-06-20 16:43:43,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945594183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:43:43,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:43:43,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:43:43,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876307742] [2024-06-20 16:43:43,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:43:43,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:43:43,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:43:43,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:43:43,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:43:43,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:43:43,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 321 transitions, 2713 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:43,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:43:43,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:43:43,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:43:44,245 INFO L124 PetriNetUnfolderBase]: 666/1334 cut-off events. [2024-06-20 16:43:44,245 INFO L125 PetriNetUnfolderBase]: For 132520/132520 co-relation queries the response was YES. [2024-06-20 16:43:44,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6539 conditions, 1334 events. 666/1334 cut-off events. For 132520/132520 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 8294 event pairs, 70 based on Foata normal form. 8/1341 useless extension candidates. Maximal degree in co-relation 6380. Up to 1135 conditions per place. [2024-06-20 16:43:44,260 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 295 selfloop transitions, 28 changer transitions 13/339 dead transitions. [2024-06-20 16:43:44,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 339 transitions, 3465 flow [2024-06-20 16:43:44,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:43:44,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:43:44,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-20 16:43:44,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841642228739003 [2024-06-20 16:43:44,261 INFO L175 Difference]: Start difference. First operand has 369 places, 321 transitions, 2713 flow. Second operand 11 states and 131 transitions. [2024-06-20 16:43:44,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 339 transitions, 3465 flow [2024-06-20 16:43:44,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 339 transitions, 3374 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-20 16:43:44,553 INFO L231 Difference]: Finished difference. Result has 365 places, 317 transitions, 2651 flow [2024-06-20 16:43:44,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2622, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2651, PETRI_PLACES=365, PETRI_TRANSITIONS=317} [2024-06-20 16:43:44,553 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 335 predicate places. [2024-06-20 16:43:44,553 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 317 transitions, 2651 flow [2024-06-20 16:43:44,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:44,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:43:44,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:43:44,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-20 16:43:44,554 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)] === [2024-06-20 16:43:44,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:43:44,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1948901896, now seen corresponding path program 15 times [2024-06-20 16:43:44,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:43:44,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539097754] [2024-06-20 16:43:44,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:43:44,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:43:44,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:43:45,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:43:45,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:43:45,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539097754] [2024-06-20 16:43:45,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539097754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:43:45,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:43:45,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:43:45,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310707641] [2024-06-20 16:43:45,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:43:45,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:43:45,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:43:45,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:43:45,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:43:45,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:43:45,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 317 transitions, 2651 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:45,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:43:45,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:43:45,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:43:46,381 INFO L124 PetriNetUnfolderBase]: 675/1349 cut-off events. [2024-06-20 16:43:46,381 INFO L125 PetriNetUnfolderBase]: For 163534/163534 co-relation queries the response was YES. [2024-06-20 16:43:46,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7917 conditions, 1349 events. 675/1349 cut-off events. For 163534/163534 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 8359 event pairs, 79 based on Foata normal form. 2/1350 useless extension candidates. Maximal degree in co-relation 7760. Up to 962 conditions per place. [2024-06-20 16:43:46,394 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 253 selfloop transitions, 81 changer transitions 0/337 dead transitions. [2024-06-20 16:43:46,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 337 transitions, 3709 flow [2024-06-20 16:43:46,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:43:46,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:43:46,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-20 16:43:46,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-20 16:43:46,395 INFO L175 Difference]: Start difference. First operand has 365 places, 317 transitions, 2651 flow. Second operand 11 states and 143 transitions. [2024-06-20 16:43:46,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 337 transitions, 3709 flow [2024-06-20 16:43:46,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 337 transitions, 3641 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-20 16:43:46,950 INFO L231 Difference]: Finished difference. Result has 361 places, 319 transitions, 2817 flow [2024-06-20 16:43:46,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2589, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2817, PETRI_PLACES=361, PETRI_TRANSITIONS=319} [2024-06-20 16:43:46,951 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 331 predicate places. [2024-06-20 16:43:46,951 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 319 transitions, 2817 flow [2024-06-20 16:43:46,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:46,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:43:46,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:43:46,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-20 16:43:46,952 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)] === [2024-06-20 16:43:46,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:43:46,952 INFO L85 PathProgramCache]: Analyzing trace with hash -842072062, now seen corresponding path program 16 times [2024-06-20 16:43:46,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:43:46,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72882692] [2024-06-20 16:43:46,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:43:46,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:43:46,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:43:48,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:43:48,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:43:48,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72882692] [2024-06-20 16:43:48,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72882692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:43:48,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:43:48,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:43:48,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275211951] [2024-06-20 16:43:48,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:43:48,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:43:48,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:43:48,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:43:48,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:43:48,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:43:48,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 319 transitions, 2817 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:48,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:43:48,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:43:48,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:43:49,097 INFO L124 PetriNetUnfolderBase]: 679/1357 cut-off events. [2024-06-20 16:43:49,097 INFO L125 PetriNetUnfolderBase]: For 158938/158938 co-relation queries the response was YES. [2024-06-20 16:43:49,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8081 conditions, 1357 events. 679/1357 cut-off events. For 158938/158938 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 8420 event pairs, 83 based on Foata normal form. 2/1358 useless extension candidates. Maximal degree in co-relation 7926. Up to 1156 conditions per place. [2024-06-20 16:43:49,112 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 280 selfloop transitions, 50 changer transitions 0/333 dead transitions. [2024-06-20 16:43:49,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 333 transitions, 3539 flow [2024-06-20 16:43:49,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:43:49,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:43:49,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-20 16:43:49,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-20 16:43:49,113 INFO L175 Difference]: Start difference. First operand has 361 places, 319 transitions, 2817 flow. Second operand 11 states and 134 transitions. [2024-06-20 16:43:49,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 333 transitions, 3539 flow [2024-06-20 16:43:49,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 333 transitions, 3397 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-20 16:43:49,623 INFO L231 Difference]: Finished difference. Result has 365 places, 320 transitions, 2813 flow [2024-06-20 16:43:49,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2675, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2813, PETRI_PLACES=365, PETRI_TRANSITIONS=320} [2024-06-20 16:43:49,624 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 335 predicate places. [2024-06-20 16:43:49,624 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 320 transitions, 2813 flow [2024-06-20 16:43:49,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:49,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:43:49,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:43:49,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-20 16:43:49,625 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)] === [2024-06-20 16:43:49,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:43:49,625 INFO L85 PathProgramCache]: Analyzing trace with hash -742096466, now seen corresponding path program 17 times [2024-06-20 16:43:49,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:43:49,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515561912] [2024-06-20 16:43:49,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:43:49,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:43:49,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:43:51,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:43:51,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:43:51,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515561912] [2024-06-20 16:43:51,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515561912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:43:51,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:43:51,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:43:51,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898973201] [2024-06-20 16:43:51,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:43:51,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:43:51,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:43:51,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:43:51,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:43:51,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:43:51,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 320 transitions, 2813 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:51,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:43:51,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:43:51,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:43:51,795 INFO L124 PetriNetUnfolderBase]: 712/1424 cut-off events. [2024-06-20 16:43:51,795 INFO L125 PetriNetUnfolderBase]: For 232970/232970 co-relation queries the response was YES. [2024-06-20 16:43:51,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9718 conditions, 1424 events. 712/1424 cut-off events. For 232970/232970 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 8909 event pairs, 94 based on Foata normal form. 2/1425 useless extension candidates. Maximal degree in co-relation 9561. Up to 1150 conditions per place. [2024-06-20 16:43:51,811 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 285 selfloop transitions, 52 changer transitions 0/340 dead transitions. [2024-06-20 16:43:51,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 340 transitions, 3883 flow [2024-06-20 16:43:51,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:43:51,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:43:51,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-20 16:43:51,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40762463343108507 [2024-06-20 16:43:51,812 INFO L175 Difference]: Start difference. First operand has 365 places, 320 transitions, 2813 flow. Second operand 11 states and 139 transitions. [2024-06-20 16:43:51,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 340 transitions, 3883 flow [2024-06-20 16:43:52,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 340 transitions, 3755 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-20 16:43:52,768 INFO L231 Difference]: Finished difference. Result has 367 places, 322 transitions, 2863 flow [2024-06-20 16:43:52,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2685, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2863, PETRI_PLACES=367, PETRI_TRANSITIONS=322} [2024-06-20 16:43:52,768 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 337 predicate places. [2024-06-20 16:43:52,769 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 322 transitions, 2863 flow [2024-06-20 16:43:52,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:52,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:43:52,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:43:52,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-20 16:43:52,769 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)] === [2024-06-20 16:43:52,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:43:52,770 INFO L85 PathProgramCache]: Analyzing trace with hash -835815952, now seen corresponding path program 18 times [2024-06-20 16:43:52,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:43:52,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004927676] [2024-06-20 16:43:52,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:43:52,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:43:52,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:43:54,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:43:54,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:43:54,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004927676] [2024-06-20 16:43:54,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004927676] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:43:54,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:43:54,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:43:54,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796442369] [2024-06-20 16:43:54,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:43:54,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:43:54,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:43:54,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:43:54,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:43:54,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:43:54,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 322 transitions, 2863 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:54,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:43:54,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:43:54,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:43:54,737 INFO L124 PetriNetUnfolderBase]: 699/1401 cut-off events. [2024-06-20 16:43:54,737 INFO L125 PetriNetUnfolderBase]: For 221672/221672 co-relation queries the response was YES. [2024-06-20 16:43:54,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8367 conditions, 1401 events. 699/1401 cut-off events. For 221672/221672 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 8781 event pairs, 87 based on Foata normal form. 10/1410 useless extension candidates. Maximal degree in co-relation 8209. Up to 1168 conditions per place. [2024-06-20 16:43:54,752 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 283 selfloop transitions, 45 changer transitions 7/338 dead transitions. [2024-06-20 16:43:54,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 338 transitions, 3615 flow [2024-06-20 16:43:54,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:43:54,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:43:54,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-20 16:43:54,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-20 16:43:54,753 INFO L175 Difference]: Start difference. First operand has 367 places, 322 transitions, 2863 flow. Second operand 11 states and 136 transitions. [2024-06-20 16:43:54,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 338 transitions, 3615 flow [2024-06-20 16:43:55,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 338 transitions, 3486 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-20 16:43:55,377 INFO L231 Difference]: Finished difference. Result has 371 places, 318 transitions, 2796 flow [2024-06-20 16:43:55,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2734, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2796, PETRI_PLACES=371, PETRI_TRANSITIONS=318} [2024-06-20 16:43:55,377 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 341 predicate places. [2024-06-20 16:43:55,377 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 318 transitions, 2796 flow [2024-06-20 16:43:55,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:55,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:43:55,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:43:55,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-20 16:43:55,378 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)] === [2024-06-20 16:43:55,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:43:55,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1942468156, now seen corresponding path program 19 times [2024-06-20 16:43:55,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:43:55,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555755022] [2024-06-20 16:43:55,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:43:55,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:43:55,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:43:56,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:43:56,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:43:56,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555755022] [2024-06-20 16:43:56,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555755022] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:43:56,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:43:56,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:43:56,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103522253] [2024-06-20 16:43:56,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:43:56,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:43:56,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:43:56,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:43:56,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:43:56,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:43:56,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 318 transitions, 2796 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:56,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:43:56,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:43:56,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:43:57,551 INFO L124 PetriNetUnfolderBase]: 667/1343 cut-off events. [2024-06-20 16:43:57,551 INFO L125 PetriNetUnfolderBase]: For 150924/150924 co-relation queries the response was YES. [2024-06-20 16:43:57,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6786 conditions, 1343 events. 667/1343 cut-off events. For 150924/150924 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 8395 event pairs, 76 based on Foata normal form. 10/1352 useless extension candidates. Maximal degree in co-relation 6626. Up to 1006 conditions per place. [2024-06-20 16:43:57,564 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 256 selfloop transitions, 68 changer transitions 7/334 dead transitions. [2024-06-20 16:43:57,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 334 transitions, 3540 flow [2024-06-20 16:43:57,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:43:57,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:43:57,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-20 16:43:57,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41642228739002934 [2024-06-20 16:43:57,565 INFO L175 Difference]: Start difference. First operand has 371 places, 318 transitions, 2796 flow. Second operand 11 states and 142 transitions. [2024-06-20 16:43:57,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 334 transitions, 3540 flow [2024-06-20 16:43:57,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 334 transitions, 3392 flow, removed 11 selfloop flow, removed 12 redundant places. [2024-06-20 16:43:57,883 INFO L231 Difference]: Finished difference. Result has 370 places, 314 transitions, 2758 flow [2024-06-20 16:43:57,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2648, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2758, PETRI_PLACES=370, PETRI_TRANSITIONS=314} [2024-06-20 16:43:57,883 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 340 predicate places. [2024-06-20 16:43:57,883 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 314 transitions, 2758 flow [2024-06-20 16:43:57,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:57,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:43:57,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:43:57,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-20 16:43:57,884 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)] === [2024-06-20 16:43:57,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:43:57,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1720577162, now seen corresponding path program 4 times [2024-06-20 16:43:57,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:43:57,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042351660] [2024-06-20 16:43:57,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:43:57,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:43:57,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:43:59,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:43:59,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:43:59,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042351660] [2024-06-20 16:43:59,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042351660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:43:59,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:43:59,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:43:59,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641924041] [2024-06-20 16:43:59,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:43:59,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:43:59,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:43:59,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:43:59,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:43:59,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:43:59,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 314 transitions, 2758 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:59,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:43:59,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:43:59,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:44:00,316 INFO L124 PetriNetUnfolderBase]: 678/1374 cut-off events. [2024-06-20 16:44:00,316 INFO L125 PetriNetUnfolderBase]: For 181292/181292 co-relation queries the response was YES. [2024-06-20 16:44:00,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7906 conditions, 1374 events. 678/1374 cut-off events. For 181292/181292 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 8612 event pairs, 82 based on Foata normal form. 6/1379 useless extension candidates. Maximal degree in co-relation 7746. Up to 1003 conditions per place. [2024-06-20 16:44:00,330 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 261 selfloop transitions, 61 changer transitions 10/335 dead transitions. [2024-06-20 16:44:00,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 335 transitions, 3796 flow [2024-06-20 16:44:00,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:44:00,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:44:00,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-20 16:44:00,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-20 16:44:00,331 INFO L175 Difference]: Start difference. First operand has 370 places, 314 transitions, 2758 flow. Second operand 12 states and 150 transitions. [2024-06-20 16:44:00,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 335 transitions, 3796 flow [2024-06-20 16:44:00,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 335 transitions, 3632 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-20 16:44:00,826 INFO L231 Difference]: Finished difference. Result has 370 places, 308 transitions, 2664 flow [2024-06-20 16:44:00,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2594, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2664, PETRI_PLACES=370, PETRI_TRANSITIONS=308} [2024-06-20 16:44:00,826 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 340 predicate places. [2024-06-20 16:44:00,827 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 308 transitions, 2664 flow [2024-06-20 16:44:00,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:44:00,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:44:00,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:44:00,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-20 16:44:00,827 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)] === [2024-06-20 16:44:00,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:44:00,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1720816172, now seen corresponding path program 5 times [2024-06-20 16:44:00,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:44:00,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682233412] [2024-06-20 16:44:00,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:44:00,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:44:00,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:44:02,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:44:02,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:44:02,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682233412] [2024-06-20 16:44:02,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682233412] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:44:02,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:44:02,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:44:02,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866355756] [2024-06-20 16:44:02,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:44:02,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:44:02,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:44:02,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:44:02,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:44:02,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:44:02,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 308 transitions, 2664 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:44:02,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:44:02,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:44:02,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:44:03,466 INFO L124 PetriNetUnfolderBase]: 654/1326 cut-off events. [2024-06-20 16:44:03,467 INFO L125 PetriNetUnfolderBase]: For 188197/188197 co-relation queries the response was YES. [2024-06-20 16:44:03,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6633 conditions, 1326 events. 654/1326 cut-off events. For 188197/188197 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 8291 event pairs, 82 based on Foata normal form. 14/1339 useless extension candidates. Maximal degree in co-relation 6473. Up to 1014 conditions per place. [2024-06-20 16:44:03,481 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 251 selfloop transitions, 55 changer transitions 16/325 dead transitions. [2024-06-20 16:44:03,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 325 transitions, 3392 flow [2024-06-20 16:44:03,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:44:03,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:44:03,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-20 16:44:03,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3897849462365591 [2024-06-20 16:44:03,482 INFO L175 Difference]: Start difference. First operand has 370 places, 308 transitions, 2664 flow. Second operand 12 states and 145 transitions. [2024-06-20 16:44:03,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 325 transitions, 3392 flow [2024-06-20 16:44:03,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 325 transitions, 3243 flow, removed 1 selfloop flow, removed 14 redundant places. [2024-06-20 16:44:03,831 INFO L231 Difference]: Finished difference. Result has 367 places, 300 transitions, 2568 flow [2024-06-20 16:44:03,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2515, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2568, PETRI_PLACES=367, PETRI_TRANSITIONS=300} [2024-06-20 16:44:03,832 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 337 predicate places. [2024-06-20 16:44:03,832 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 300 transitions, 2568 flow [2024-06-20 16:44:03,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:44:03,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:44:03,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:44:03,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-20 16:44:03,832 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)] === [2024-06-20 16:44:03,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:44:03,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1712533592, now seen corresponding path program 6 times [2024-06-20 16:44:03,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:44:03,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173681374] [2024-06-20 16:44:03,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:44:03,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:44:03,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:44:05,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:44:05,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:44:05,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173681374] [2024-06-20 16:44:05,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173681374] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:44:05,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:44:05,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:44:05,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955966544] [2024-06-20 16:44:05,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:44:05,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:44:05,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:44:05,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:44:05,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:44:05,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:44:05,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 300 transitions, 2568 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:44:05,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:44:05,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:44:05,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:44:05,922 INFO L124 PetriNetUnfolderBase]: 626/1268 cut-off events. [2024-06-20 16:44:05,922 INFO L125 PetriNetUnfolderBase]: For 124004/124004 co-relation queries the response was YES. [2024-06-20 16:44:05,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6361 conditions, 1268 events. 626/1268 cut-off events. For 124004/124004 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 7869 event pairs, 68 based on Foata normal form. 6/1273 useless extension candidates. Maximal degree in co-relation 6202. Up to 937 conditions per place. [2024-06-20 16:44:05,936 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 232 selfloop transitions, 70 changer transitions 12/317 dead transitions. [2024-06-20 16:44:05,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 317 transitions, 3268 flow [2024-06-20 16:44:05,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:44:05,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:44:05,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-20 16:44:05,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-20 16:44:05,937 INFO L175 Difference]: Start difference. First operand has 367 places, 300 transitions, 2568 flow. Second operand 12 states and 144 transitions. [2024-06-20 16:44:05,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 317 transitions, 3268 flow [2024-06-20 16:44:06,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 317 transitions, 3148 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-20 16:44:06,254 INFO L231 Difference]: Finished difference. Result has 359 places, 295 transitions, 2555 flow [2024-06-20 16:44:06,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2448, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2555, PETRI_PLACES=359, PETRI_TRANSITIONS=295} [2024-06-20 16:44:06,254 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 329 predicate places. [2024-06-20 16:44:06,254 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 295 transitions, 2555 flow [2024-06-20 16:44:06,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:44:06,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:44:06,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:44:06,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-20 16:44:06,255 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)] === [2024-06-20 16:44:06,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:44:06,255 INFO L85 PathProgramCache]: Analyzing trace with hash 629095560, now seen corresponding path program 7 times [2024-06-20 16:44:06,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:44:06,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491422606] [2024-06-20 16:44:06,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:44:06,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:44:06,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:44:08,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:44:08,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:44:08,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491422606] [2024-06-20 16:44:08,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491422606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:44:08,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:44:08,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:44:08,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983302272] [2024-06-20 16:44:08,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:44:08,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:44:08,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:44:08,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:44:08,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:44:08,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:44:08,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 295 transitions, 2555 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:44:08,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:44:08,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:44:08,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:44:09,608 INFO L124 PetriNetUnfolderBase]: 616/1250 cut-off events. [2024-06-20 16:44:09,609 INFO L125 PetriNetUnfolderBase]: For 135356/135356 co-relation queries the response was YES. [2024-06-20 16:44:09,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6305 conditions, 1250 events. 616/1250 cut-off events. For 135356/135356 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 7728 event pairs, 78 based on Foata normal form. 8/1257 useless extension candidates. Maximal degree in co-relation 6149. Up to 1029 conditions per place. [2024-06-20 16:44:09,621 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 258 selfloop transitions, 38 changer transitions 13/312 dead transitions. [2024-06-20 16:44:09,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 312 transitions, 3257 flow [2024-06-20 16:44:09,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:44:09,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:44:09,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-20 16:44:09,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3897849462365591 [2024-06-20 16:44:09,622 INFO L175 Difference]: Start difference. First operand has 359 places, 295 transitions, 2555 flow. Second operand 12 states and 145 transitions. [2024-06-20 16:44:09,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 312 transitions, 3257 flow [2024-06-20 16:44:09,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 312 transitions, 3111 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-20 16:44:09,921 INFO L231 Difference]: Finished difference. Result has 355 places, 289 transitions, 2443 flow [2024-06-20 16:44:09,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2409, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2443, PETRI_PLACES=355, PETRI_TRANSITIONS=289} [2024-06-20 16:44:09,922 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 325 predicate places. [2024-06-20 16:44:09,922 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 289 transitions, 2443 flow [2024-06-20 16:44:09,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:44:09,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:44:09,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:44:09,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-20 16:44:09,922 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)] === [2024-06-20 16:44:09,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:44:09,922 INFO L85 PathProgramCache]: Analyzing trace with hash -835569998, now seen corresponding path program 8 times [2024-06-20 16:44:09,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:44:09,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537568448] [2024-06-20 16:44:09,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:44:09,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:44:09,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:44:11,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:44:11,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:44:11,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537568448] [2024-06-20 16:44:11,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537568448] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:44:11,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:44:11,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:44:11,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284877145] [2024-06-20 16:44:11,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:44:11,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:44:11,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:44:11,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:44:11,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:44:11,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:44:11,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 289 transitions, 2443 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:44:11,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:44:11,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:44:11,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:44:12,237 INFO L124 PetriNetUnfolderBase]: 622/1272 cut-off events. [2024-06-20 16:44:12,237 INFO L125 PetriNetUnfolderBase]: For 169482/169482 co-relation queries the response was YES. [2024-06-20 16:44:12,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7282 conditions, 1272 events. 622/1272 cut-off events. For 169482/169482 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 7868 event pairs, 84 based on Foata normal form. 6/1277 useless extension candidates. Maximal degree in co-relation 7128. Up to 986 conditions per place. [2024-06-20 16:44:12,252 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 261 selfloop transitions, 36 changer transitions 10/310 dead transitions. [2024-06-20 16:44:12,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 310 transitions, 3423 flow [2024-06-20 16:44:12,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:44:12,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:44:12,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-20 16:44:12,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3951612903225806 [2024-06-20 16:44:12,253 INFO L175 Difference]: Start difference. First operand has 355 places, 289 transitions, 2443 flow. Second operand 12 states and 147 transitions. [2024-06-20 16:44:12,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 310 transitions, 3423 flow [2024-06-20 16:44:12,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 310 transitions, 3329 flow, removed 9 selfloop flow, removed 12 redundant places. [2024-06-20 16:44:12,774 INFO L231 Difference]: Finished difference. Result has 349 places, 283 transitions, 2381 flow [2024-06-20 16:44:12,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2357, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2381, PETRI_PLACES=349, PETRI_TRANSITIONS=283} [2024-06-20 16:44:12,775 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 319 predicate places. [2024-06-20 16:44:12,775 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 283 transitions, 2381 flow [2024-06-20 16:44:12,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:44:12,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:44:12,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:44:12,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-20 16:44:12,775 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)] === [2024-06-20 16:44:12,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:44:12,776 INFO L85 PathProgramCache]: Analyzing trace with hash -835809008, now seen corresponding path program 9 times [2024-06-20 16:44:12,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:44:12,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411013306] [2024-06-20 16:44:12,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:44:12,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:44:12,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:44:14,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:44:14,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:44:14,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411013306] [2024-06-20 16:44:14,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411013306] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:44:14,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:44:14,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:44:14,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012403338] [2024-06-20 16:44:14,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:44:14,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:44:14,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:44:14,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:44:14,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:44:14,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:44:14,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 283 transitions, 2381 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:44:14,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:44:14,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:44:14,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:44:15,044 INFO L124 PetriNetUnfolderBase]: 590/1204 cut-off events. [2024-06-20 16:44:15,044 INFO L125 PetriNetUnfolderBase]: For 122335/122335 co-relation queries the response was YES. [2024-06-20 16:44:15,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5981 conditions, 1204 events. 590/1204 cut-off events. For 122335/122335 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 7405 event pairs, 76 based on Foata normal form. 8/1211 useless extension candidates. Maximal degree in co-relation 5830. Up to 986 conditions per place. [2024-06-20 16:44:15,056 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 250 selfloop transitions, 30 changer transitions 17/300 dead transitions. [2024-06-20 16:44:15,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 300 transitions, 3059 flow [2024-06-20 16:44:15,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:44:15,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:44:15,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-20 16:44:15,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3817204301075269 [2024-06-20 16:44:15,057 INFO L175 Difference]: Start difference. First operand has 349 places, 283 transitions, 2381 flow. Second operand 12 states and 142 transitions. [2024-06-20 16:44:15,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 300 transitions, 3059 flow [2024-06-20 16:44:15,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 300 transitions, 2986 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-20 16:44:15,293 INFO L231 Difference]: Finished difference. Result has 347 places, 274 transitions, 2296 flow [2024-06-20 16:44:15,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2308, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2296, PETRI_PLACES=347, PETRI_TRANSITIONS=274} [2024-06-20 16:44:15,294 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 317 predicate places. [2024-06-20 16:44:15,294 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 274 transitions, 2296 flow [2024-06-20 16:44:15,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:44:15,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:44:15,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:44:15,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-20 16:44:15,294 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)] === [2024-06-20 16:44:15,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:44:15,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1111561326, now seen corresponding path program 10 times [2024-06-20 16:44:15,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:44:15,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791247195] [2024-06-20 16:44:15,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:44:15,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:44:15,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:44:16,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:44:16,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:44:16,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791247195] [2024-06-20 16:44:16,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791247195] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:44:16,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:44:16,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:44:16,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123943599] [2024-06-20 16:44:16,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:44:16,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:44:16,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:44:16,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:44:16,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:44:16,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:44:16,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 274 transitions, 2296 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:44:16,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:44:16,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:44:16,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:44:17,343 INFO L124 PetriNetUnfolderBase]: 592/1212 cut-off events. [2024-06-20 16:44:17,343 INFO L125 PetriNetUnfolderBase]: For 158392/158392 co-relation queries the response was YES. [2024-06-20 16:44:17,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6946 conditions, 1212 events. 592/1212 cut-off events. For 158392/158392 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 7399 event pairs, 76 based on Foata normal form. 6/1217 useless extension candidates. Maximal degree in co-relation 6796. Up to 825 conditions per place. [2024-06-20 16:44:17,356 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 228 selfloop transitions, 49 changer transitions 16/296 dead transitions. [2024-06-20 16:44:17,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 296 transitions, 3242 flow [2024-06-20 16:44:17,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:44:17,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:44:17,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-20 16:44:17,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40053763440860213 [2024-06-20 16:44:17,357 INFO L175 Difference]: Start difference. First operand has 347 places, 274 transitions, 2296 flow. Second operand 12 states and 149 transitions. [2024-06-20 16:44:17,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 296 transitions, 3242 flow [2024-06-20 16:44:17,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 296 transitions, 3146 flow, removed 16 selfloop flow, removed 13 redundant places. [2024-06-20 16:44:17,787 INFO L231 Difference]: Finished difference. Result has 337 places, 264 transitions, 2238 flow [2024-06-20 16:44:17,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2216, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2238, PETRI_PLACES=337, PETRI_TRANSITIONS=264} [2024-06-20 16:44:17,788 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 307 predicate places. [2024-06-20 16:44:17,788 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 264 transitions, 2238 flow [2024-06-20 16:44:17,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:44:17,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:44:17,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:44:17,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-20 16:44:17,789 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)] === [2024-06-20 16:44:17,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:44:17,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1948717322, now seen corresponding path program 11 times [2024-06-20 16:44:17,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:44:17,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862948919] [2024-06-20 16:44:17,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:44:17,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:44:17,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:44:19,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:44:19,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:44:19,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862948919] [2024-06-20 16:44:19,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862948919] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:44:19,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:44:19,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:44:19,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220392441] [2024-06-20 16:44:19,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:44:19,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:44:19,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:44:19,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:44:19,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:44:19,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:44:19,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 264 transitions, 2238 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:44:19,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:44:19,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:44:19,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:44:20,177 INFO L124 PetriNetUnfolderBase]: 572/1168 cut-off events. [2024-06-20 16:44:20,177 INFO L125 PetriNetUnfolderBase]: For 163135/163135 co-relation queries the response was YES. [2024-06-20 16:44:20,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6724 conditions, 1168 events. 572/1168 cut-off events. For 163135/163135 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7096 event pairs, 82 based on Foata normal form. 8/1175 useless extension candidates. Maximal degree in co-relation 6579. Up to 925 conditions per place. [2024-06-20 16:44:20,189 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 225 selfloop transitions, 44 changer transitions 9/281 dead transitions. [2024-06-20 16:44:20,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 281 transitions, 2874 flow [2024-06-20 16:44:20,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:44:20,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:44:20,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-20 16:44:20,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-20 16:44:20,190 INFO L175 Difference]: Start difference. First operand has 337 places, 264 transitions, 2238 flow. Second operand 12 states and 144 transitions. [2024-06-20 16:44:20,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 281 transitions, 2874 flow [2024-06-20 16:44:20,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 281 transitions, 2754 flow, removed 7 selfloop flow, removed 17 redundant places. [2024-06-20 16:44:20,540 INFO L231 Difference]: Finished difference. Result has 325 places, 261 transitions, 2185 flow [2024-06-20 16:44:20,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2118, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2185, PETRI_PLACES=325, PETRI_TRANSITIONS=261} [2024-06-20 16:44:20,540 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 295 predicate places. [2024-06-20 16:44:20,541 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 261 transitions, 2185 flow [2024-06-20 16:44:20,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:44:20,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:44:20,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:44:20,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-20 16:44:20,541 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)] === [2024-06-20 16:44:20,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:44:20,542 INFO L85 PathProgramCache]: Analyzing trace with hash 881345406, now seen corresponding path program 12 times [2024-06-20 16:44:20,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:44:20,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584256733] [2024-06-20 16:44:20,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:44:20,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:44:20,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:44:22,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:44:22,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:44:22,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584256733] [2024-06-20 16:44:22,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584256733] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:44:22,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:44:22,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:44:22,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477544123] [2024-06-20 16:44:22,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:44:22,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:44:22,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:44:22,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:44:22,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:44:22,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:44:22,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 261 transitions, 2185 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:44:22,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:44:22,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:44:22,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:44:22,791 INFO L124 PetriNetUnfolderBase]: 568/1172 cut-off events. [2024-06-20 16:44:22,791 INFO L125 PetriNetUnfolderBase]: For 170340/170340 co-relation queries the response was YES. [2024-06-20 16:44:22,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6368 conditions, 1172 events. 568/1172 cut-off events. For 170340/170340 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 7142 event pairs, 89 based on Foata normal form. 14/1185 useless extension candidates. Maximal degree in co-relation 6228. Up to 895 conditions per place. [2024-06-20 16:44:22,801 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 221 selfloop transitions, 40 changer transitions 14/278 dead transitions. [2024-06-20 16:44:22,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 278 transitions, 2815 flow [2024-06-20 16:44:22,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:44:22,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:44:22,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-20 16:44:22,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3897849462365591 [2024-06-20 16:44:22,802 INFO L175 Difference]: Start difference. First operand has 325 places, 261 transitions, 2185 flow. Second operand 12 states and 145 transitions. [2024-06-20 16:44:22,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 278 transitions, 2815 flow [2024-06-20 16:44:23,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 278 transitions, 2723 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-20 16:44:23,116 INFO L231 Difference]: Finished difference. Result has 323 places, 254 transitions, 2125 flow [2024-06-20 16:44:23,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2093, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2125, PETRI_PLACES=323, PETRI_TRANSITIONS=254} [2024-06-20 16:44:23,117 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 293 predicate places. [2024-06-20 16:44:23,117 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 254 transitions, 2125 flow [2024-06-20 16:44:23,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:44:23,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:44:23,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:44:23,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-20 16:44:23,117 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)] === [2024-06-20 16:44:23,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:44:23,117 INFO L85 PathProgramCache]: Analyzing trace with hash 881584416, now seen corresponding path program 13 times [2024-06-20 16:44:23,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:44:23,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934674458] [2024-06-20 16:44:23,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:44:23,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:44:23,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:44:24,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:44:24,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:44:24,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934674458] [2024-06-20 16:44:24,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934674458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:44:24,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:44:24,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:44:24,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879255974] [2024-06-20 16:44:24,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:44:24,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:44:24,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:44:24,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:44:24,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:44:24,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:44:24,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 254 transitions, 2125 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:44:24,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:44:24,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:44:24,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:44:25,011 INFO L124 PetriNetUnfolderBase]: 527/1087 cut-off events. [2024-06-20 16:44:25,011 INFO L125 PetriNetUnfolderBase]: For 89394/89394 co-relation queries the response was YES. [2024-06-20 16:44:25,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5349 conditions, 1087 events. 527/1087 cut-off events. For 89394/89394 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 6586 event pairs, 66 based on Foata normal form. 6/1092 useless extension candidates. Maximal degree in co-relation 5210. Up to 836 conditions per place. [2024-06-20 16:44:25,022 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 217 selfloop transitions, 36 changer transitions 15/271 dead transitions. [2024-06-20 16:44:25,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 271 transitions, 2731 flow [2024-06-20 16:44:25,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:44:25,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:44:25,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-20 16:44:25,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-20 16:44:25,023 INFO L175 Difference]: Start difference. First operand has 323 places, 254 transitions, 2125 flow. Second operand 12 states and 141 transitions. [2024-06-20 16:44:25,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 271 transitions, 2731 flow [2024-06-20 16:44:25,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 271 transitions, 2641 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-20 16:44:25,266 INFO L231 Difference]: Finished difference. Result has 317 places, 246 transitions, 2057 flow [2024-06-20 16:44:25,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2035, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2057, PETRI_PLACES=317, PETRI_TRANSITIONS=246} [2024-06-20 16:44:25,266 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 287 predicate places. [2024-06-20 16:44:25,267 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 246 transitions, 2057 flow [2024-06-20 16:44:25,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:44:25,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:44:25,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:44:25,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-20 16:44:25,267 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)] === [2024-06-20 16:44:25,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:44:25,268 INFO L85 PathProgramCache]: Analyzing trace with hash 2123712694, now seen corresponding path program 20 times [2024-06-20 16:44:25,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:44:25,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868779858] [2024-06-20 16:44:25,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:44:25,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:44:25,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:44:26,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:44:26,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:44:26,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868779858] [2024-06-20 16:44:26,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868779858] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:44:26,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:44:26,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:44:26,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495697242] [2024-06-20 16:44:26,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:44:26,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:44:26,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:44:26,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:44:26,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:44:26,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:44:26,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 246 transitions, 2057 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:44:26,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:44:26,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:44:26,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:44:27,006 INFO L124 PetriNetUnfolderBase]: 519/1071 cut-off events. [2024-06-20 16:44:27,006 INFO L125 PetriNetUnfolderBase]: For 107245/107245 co-relation queries the response was YES. [2024-06-20 16:44:27,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5286 conditions, 1071 events. 519/1071 cut-off events. For 107245/107245 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6425 event pairs, 78 based on Foata normal form. 10/1080 useless extension candidates. Maximal degree in co-relation 5150. Up to 794 conditions per place. [2024-06-20 16:44:27,016 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 184 selfloop transitions, 67 changer transitions 7/261 dead transitions. [2024-06-20 16:44:27,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 261 transitions, 2671 flow [2024-06-20 16:44:27,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:44:27,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:44:27,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-20 16:44:27,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41348973607038125 [2024-06-20 16:44:27,017 INFO L175 Difference]: Start difference. First operand has 317 places, 246 transitions, 2057 flow. Second operand 11 states and 141 transitions. [2024-06-20 16:44:27,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 261 transitions, 2671 flow [2024-06-20 16:44:27,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 261 transitions, 2593 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-20 16:44:27,259 INFO L231 Difference]: Finished difference. Result has 307 places, 243 transitions, 2119 flow [2024-06-20 16:44:27,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1979, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2119, PETRI_PLACES=307, PETRI_TRANSITIONS=243} [2024-06-20 16:44:27,259 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 277 predicate places. [2024-06-20 16:44:27,259 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 243 transitions, 2119 flow [2024-06-20 16:44:27,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:44:27,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:44:27,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:44:27,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-20 16:44:27,260 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)] === [2024-06-20 16:44:27,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:44:27,260 INFO L85 PathProgramCache]: Analyzing trace with hash 264495198, now seen corresponding path program 21 times [2024-06-20 16:44:27,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:44:27,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154938948] [2024-06-20 16:44:27,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:44:27,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:44:27,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:44:28,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:44:28,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:44:28,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154938948] [2024-06-20 16:44:28,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154938948] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:44:28,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:44:28,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:44:28,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794361930] [2024-06-20 16:44:28,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:44:28,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:44:28,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:44:28,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:44:28,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:44:28,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:44:28,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 243 transitions, 2119 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:44:28,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:44:28,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:44:28,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:44:29,018 INFO L124 PetriNetUnfolderBase]: 516/1064 cut-off events. [2024-06-20 16:44:29,018 INFO L125 PetriNetUnfolderBase]: For 103698/103698 co-relation queries the response was YES. [2024-06-20 16:44:29,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5361 conditions, 1064 events. 516/1064 cut-off events. For 103698/103698 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6396 event pairs, 76 based on Foata normal form. 10/1073 useless extension candidates. Maximal degree in co-relation 5227. Up to 798 conditions per place. [2024-06-20 16:44:29,029 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 186 selfloop transitions, 63 changer transitions 6/258 dead transitions. [2024-06-20 16:44:29,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 258 transitions, 2729 flow [2024-06-20 16:44:29,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:44:29,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:44:29,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-20 16:44:29,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-20 16:44:29,030 INFO L175 Difference]: Start difference. First operand has 307 places, 243 transitions, 2119 flow. Second operand 11 states and 143 transitions. [2024-06-20 16:44:29,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 258 transitions, 2729 flow [2024-06-20 16:44:29,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 258 transitions, 2570 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-20 16:44:29,271 INFO L231 Difference]: Finished difference. Result has 308 places, 241 transitions, 2101 flow [2024-06-20 16:44:29,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1960, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2101, PETRI_PLACES=308, PETRI_TRANSITIONS=241} [2024-06-20 16:44:29,272 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 278 predicate places. [2024-06-20 16:44:29,272 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 241 transitions, 2101 flow [2024-06-20 16:44:29,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:44:29,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:44:29,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:44:29,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-20 16:44:29,272 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)] === [2024-06-20 16:44:29,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:44:29,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1733025816, now seen corresponding path program 22 times [2024-06-20 16:44:29,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:44:29,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078952839] [2024-06-20 16:44:29,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:44:29,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:44:29,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:44:30,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:44:30,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:44:30,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078952839] [2024-06-20 16:44:30,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078952839] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:44:30,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:44:30,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:44:30,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565747032] [2024-06-20 16:44:30,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:44:30,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:44:30,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:44:30,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:44:30,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:44:30,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:44:30,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 241 transitions, 2101 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:44:30,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:44:30,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:44:30,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:44:30,906 INFO L124 PetriNetUnfolderBase]: 515/1067 cut-off events. [2024-06-20 16:44:30,906 INFO L125 PetriNetUnfolderBase]: For 105780/105780 co-relation queries the response was YES. [2024-06-20 16:44:30,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5372 conditions, 1067 events. 515/1067 cut-off events. For 105780/105780 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6416 event pairs, 78 based on Foata normal form. 10/1076 useless extension candidates. Maximal degree in co-relation 5237. Up to 644 conditions per place. [2024-06-20 16:44:30,916 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 142 selfloop transitions, 105 changer transitions 6/256 dead transitions. [2024-06-20 16:44:30,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 256 transitions, 2709 flow [2024-06-20 16:44:30,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:44:30,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:44:30,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-20 16:44:30,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4252199413489736 [2024-06-20 16:44:30,917 INFO L175 Difference]: Start difference. First operand has 308 places, 241 transitions, 2101 flow. Second operand 11 states and 145 transitions. [2024-06-20 16:44:30,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 256 transitions, 2709 flow [2024-06-20 16:44:31,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 256 transitions, 2556 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-20 16:44:31,185 INFO L231 Difference]: Finished difference. Result has 309 places, 239 transitions, 2176 flow [2024-06-20 16:44:31,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1948, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2176, PETRI_PLACES=309, PETRI_TRANSITIONS=239} [2024-06-20 16:44:31,186 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 279 predicate places. [2024-06-20 16:44:31,186 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 239 transitions, 2176 flow [2024-06-20 16:44:31,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:44:31,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:44:31,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:44:31,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-20 16:44:31,187 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)] === [2024-06-20 16:44:31,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:44:31,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1739454906, now seen corresponding path program 23 times [2024-06-20 16:44:31,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:44:31,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137556508] [2024-06-20 16:44:31,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:44:31,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:44:31,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:44:32,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:44:32,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:44:32,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137556508] [2024-06-20 16:44:32,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137556508] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:44:32,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:44:32,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:44:32,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472791743] [2024-06-20 16:44:32,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:44:32,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:44:32,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:44:32,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:44:32,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:44:32,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:44:32,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 239 transitions, 2176 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:44:32,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:44:32,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:44:32,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:44:33,237 INFO L124 PetriNetUnfolderBase]: 502/1038 cut-off events. [2024-06-20 16:44:33,237 INFO L125 PetriNetUnfolderBase]: For 66188/66188 co-relation queries the response was YES. [2024-06-20 16:44:33,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5329 conditions, 1038 events. 502/1038 cut-off events. For 66188/66188 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6228 event pairs, 74 based on Foata normal form. 2/1039 useless extension candidates. Maximal degree in co-relation 5193. Up to 652 conditions per place. [2024-06-20 16:44:33,247 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 133 selfloop transitions, 115 changer transitions 0/251 dead transitions. [2024-06-20 16:44:33,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 251 transitions, 2728 flow [2024-06-20 16:44:33,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:44:33,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:44:33,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-20 16:44:33,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41348973607038125 [2024-06-20 16:44:33,248 INFO L175 Difference]: Start difference. First operand has 309 places, 239 transitions, 2176 flow. Second operand 11 states and 141 transitions. [2024-06-20 16:44:33,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 251 transitions, 2728 flow [2024-06-20 16:44:33,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 251 transitions, 2490 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-20 16:44:33,477 INFO L231 Difference]: Finished difference. Result has 309 places, 240 transitions, 2206 flow [2024-06-20 16:44:33,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1938, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2206, PETRI_PLACES=309, PETRI_TRANSITIONS=240} [2024-06-20 16:44:33,477 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 279 predicate places. [2024-06-20 16:44:33,477 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 240 transitions, 2206 flow [2024-06-20 16:44:33,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:44:33,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:44:33,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:44:33,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-20 16:44:33,478 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)] === [2024-06-20 16:44:33,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:44:33,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1895811544, now seen corresponding path program 24 times [2024-06-20 16:44:33,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:44:33,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571942274] [2024-06-20 16:44:33,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:44:33,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:44:33,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:44:34,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:44:34,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:44:34,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571942274] [2024-06-20 16:44:34,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571942274] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:44:34,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:44:34,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:44:34,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789439315] [2024-06-20 16:44:34,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:44:34,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:44:34,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:44:34,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:44:34,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:44:34,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:44:34,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 240 transitions, 2206 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:44:34,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:44:34,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:44:34,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:44:35,146 INFO L124 PetriNetUnfolderBase]: 506/1042 cut-off events. [2024-06-20 16:44:35,146 INFO L125 PetriNetUnfolderBase]: For 66443/66443 co-relation queries the response was YES. [2024-06-20 16:44:35,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5381 conditions, 1042 events. 506/1042 cut-off events. For 66443/66443 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6260 event pairs, 72 based on Foata normal form. 2/1043 useless extension candidates. Maximal degree in co-relation 5245. Up to 815 conditions per place. [2024-06-20 16:44:35,157 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 183 selfloop transitions, 66 changer transitions 0/252 dead transitions. [2024-06-20 16:44:35,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 252 transitions, 2762 flow [2024-06-20 16:44:35,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:44:35,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:44:35,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-20 16:44:35,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4046920821114369 [2024-06-20 16:44:35,158 INFO L175 Difference]: Start difference. First operand has 309 places, 240 transitions, 2206 flow. Second operand 11 states and 138 transitions. [2024-06-20 16:44:35,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 252 transitions, 2762 flow [2024-06-20 16:44:35,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 252 transitions, 2504 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-20 16:44:35,385 INFO L231 Difference]: Finished difference. Result has 311 places, 241 transitions, 2120 flow [2024-06-20 16:44:35,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1948, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2120, PETRI_PLACES=311, PETRI_TRANSITIONS=241} [2024-06-20 16:44:35,386 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 281 predicate places. [2024-06-20 16:44:35,386 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 241 transitions, 2120 flow [2024-06-20 16:44:35,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:44:35,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:44:35,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:44:35,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-20 16:44:35,386 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)] === [2024-06-20 16:44:35,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:44:35,387 INFO L85 PathProgramCache]: Analyzing trace with hash 178657130, now seen corresponding path program 25 times [2024-06-20 16:44:35,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:44:35,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276720984] [2024-06-20 16:44:35,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:44:35,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:44:35,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:44:36,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:44:36,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:44:36,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276720984] [2024-06-20 16:44:36,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276720984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:44:36,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:44:36,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:44:36,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167621641] [2024-06-20 16:44:36,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:44:36,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:44:36,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:44:36,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:44:36,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:44:36,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:44:36,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 241 transitions, 2120 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:44:36,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:44:36,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:44:36,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:44:37,327 INFO L124 PetriNetUnfolderBase]: 510/1050 cut-off events. [2024-06-20 16:44:37,327 INFO L125 PetriNetUnfolderBase]: For 67630/67630 co-relation queries the response was YES. [2024-06-20 16:44:37,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5330 conditions, 1050 events. 510/1050 cut-off events. For 67630/67630 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6315 event pairs, 74 based on Foata normal form. 2/1051 useless extension candidates. Maximal degree in co-relation 5193. Up to 871 conditions per place. [2024-06-20 16:44:37,338 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 201 selfloop transitions, 49 changer transitions 0/253 dead transitions. [2024-06-20 16:44:37,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 253 transitions, 2680 flow [2024-06-20 16:44:37,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:44:37,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:44:37,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-20 16:44:37,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-20 16:44:37,339 INFO L175 Difference]: Start difference. First operand has 311 places, 241 transitions, 2120 flow. Second operand 11 states and 134 transitions. [2024-06-20 16:44:37,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 253 transitions, 2680 flow [2024-06-20 16:44:37,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 253 transitions, 2518 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-20 16:44:37,605 INFO L231 Difference]: Finished difference. Result has 313 places, 242 transitions, 2098 flow [2024-06-20 16:44:37,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1958, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2098, PETRI_PLACES=313, PETRI_TRANSITIONS=242} [2024-06-20 16:44:37,605 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 283 predicate places. [2024-06-20 16:44:37,605 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 242 transitions, 2098 flow [2024-06-20 16:44:37,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:44:37,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:44:37,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:44:37,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-20 16:44:37,605 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)] === [2024-06-20 16:44:37,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:44:37,606 INFO L85 PathProgramCache]: Analyzing trace with hash 178479500, now seen corresponding path program 26 times [2024-06-20 16:44:37,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:44:37,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168867998] [2024-06-20 16:44:37,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:44:37,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:44:37,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:44:38,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:44:38,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:44:38,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168867998] [2024-06-20 16:44:38,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168867998] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:44:38,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:44:38,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:44:38,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614216196] [2024-06-20 16:44:38,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:44:38,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:44:38,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:44:38,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:44:38,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:44:38,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:44:38,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 242 transitions, 2098 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:44:38,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:44:38,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:44:38,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:44:39,425 INFO L124 PetriNetUnfolderBase]: 543/1117 cut-off events. [2024-06-20 16:44:39,425 INFO L125 PetriNetUnfolderBase]: For 124173/124173 co-relation queries the response was YES. [2024-06-20 16:44:39,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6745 conditions, 1117 events. 543/1117 cut-off events. For 124173/124173 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6737 event pairs, 87 based on Foata normal form. 2/1118 useless extension candidates. Maximal degree in co-relation 6607. Up to 865 conditions per place. [2024-06-20 16:44:39,437 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 206 selfloop transitions, 51 changer transitions 0/260 dead transitions. [2024-06-20 16:44:39,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 260 transitions, 2974 flow [2024-06-20 16:44:39,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:44:39,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:44:39,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-20 16:44:39,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40762463343108507 [2024-06-20 16:44:39,438 INFO L175 Difference]: Start difference. First operand has 313 places, 242 transitions, 2098 flow. Second operand 11 states and 139 transitions. [2024-06-20 16:44:39,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 260 transitions, 2974 flow [2024-06-20 16:44:39,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 260 transitions, 2844 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-20 16:44:39,852 INFO L231 Difference]: Finished difference. Result has 315 places, 244 transitions, 2152 flow [2024-06-20 16:44:39,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1968, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2152, PETRI_PLACES=315, PETRI_TRANSITIONS=244} [2024-06-20 16:44:39,852 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 285 predicate places. [2024-06-20 16:44:39,852 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 244 transitions, 2152 flow [2024-06-20 16:44:39,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:44:39,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:44:39,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:44:39,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-20 16:44:39,852 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)] === [2024-06-20 16:44:39,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:44:39,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1452659216, now seen corresponding path program 27 times [2024-06-20 16:44:39,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:44:39,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047767671] [2024-06-20 16:44:39,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:44:39,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:44:39,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:44:41,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:44:41,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:44:41,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047767671] [2024-06-20 16:44:41,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047767671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:44:41,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:44:41,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:44:41,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291044196] [2024-06-20 16:44:41,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:44:41,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:44:41,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:44:41,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:44:41,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:44:41,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:44:41,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 244 transitions, 2152 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:44:41,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:44:41,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:44:41,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:44:41,863 INFO L124 PetriNetUnfolderBase]: 530/1098 cut-off events. [2024-06-20 16:44:41,863 INFO L125 PetriNetUnfolderBase]: For 114750/114750 co-relation queries the response was YES. [2024-06-20 16:44:41,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5540 conditions, 1098 events. 530/1098 cut-off events. For 114750/114750 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6660 event pairs, 82 based on Foata normal form. 10/1107 useless extension candidates. Maximal degree in co-relation 5401. Up to 883 conditions per place. [2024-06-20 16:44:41,874 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 204 selfloop transitions, 45 changer transitions 6/258 dead transitions. [2024-06-20 16:44:41,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 258 transitions, 2734 flow [2024-06-20 16:44:41,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:44:41,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:44:41,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-20 16:44:41,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-20 16:44:41,875 INFO L175 Difference]: Start difference. First operand has 315 places, 244 transitions, 2152 flow. Second operand 11 states and 136 transitions. [2024-06-20 16:44:41,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 258 transitions, 2734 flow [2024-06-20 16:44:42,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 258 transitions, 2603 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-20 16:44:42,137 INFO L231 Difference]: Finished difference. Result has 319 places, 241 transitions, 2094 flow [2024-06-20 16:44:42,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2021, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2094, PETRI_PLACES=319, PETRI_TRANSITIONS=241} [2024-06-20 16:44:42,138 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 289 predicate places. [2024-06-20 16:44:42,138 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 241 transitions, 2094 flow [2024-06-20 16:44:42,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:44:42,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:44:42,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:44:42,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-20 16:44:42,138 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)] === [2024-06-20 16:44:42,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:44:42,139 INFO L85 PathProgramCache]: Analyzing trace with hash 917935284, now seen corresponding path program 28 times [2024-06-20 16:44:42,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:44:42,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069489057] [2024-06-20 16:44:42,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:44:42,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:44:42,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:44:43,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:44:43,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:44:43,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069489057] [2024-06-20 16:44:43,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069489057] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:44:43,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:44:43,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:44:43,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704516799] [2024-06-20 16:44:43,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:44:43,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:44:43,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:44:43,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:44:43,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:44:43,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:44:43,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 241 transitions, 2094 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:44:43,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:44:43,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:44:43,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:44:44,018 INFO L124 PetriNetUnfolderBase]: 546/1128 cut-off events. [2024-06-20 16:44:44,018 INFO L125 PetriNetUnfolderBase]: For 128410/128410 co-relation queries the response was YES. [2024-06-20 16:44:44,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6827 conditions, 1128 events. 546/1128 cut-off events. For 128410/128410 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6830 event pairs, 91 based on Foata normal form. 2/1129 useless extension candidates. Maximal degree in co-relation 6686. Up to 658 conditions per place. [2024-06-20 16:44:44,029 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 140 selfloop transitions, 116 changer transitions 0/259 dead transitions. [2024-06-20 16:44:44,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 259 transitions, 2976 flow [2024-06-20 16:44:44,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:44:44,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:44:44,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-20 16:44:44,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4281524926686217 [2024-06-20 16:44:44,030 INFO L175 Difference]: Start difference. First operand has 319 places, 241 transitions, 2094 flow. Second operand 11 states and 146 transitions. [2024-06-20 16:44:44,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 259 transitions, 2976 flow [2024-06-20 16:44:44,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 259 transitions, 2831 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-20 16:44:44,413 INFO L231 Difference]: Finished difference. Result has 318 places, 243 transitions, 2267 flow [2024-06-20 16:44:44,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1949, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2267, PETRI_PLACES=318, PETRI_TRANSITIONS=243} [2024-06-20 16:44:44,413 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 288 predicate places. [2024-06-20 16:44:44,413 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 243 transitions, 2267 flow [2024-06-20 16:44:44,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:44:44,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:44:44,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:44:44,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-20 16:44:44,414 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)] === [2024-06-20 16:44:44,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:44:44,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1511380776, now seen corresponding path program 29 times [2024-06-20 16:44:44,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:44:44,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119543304] [2024-06-20 16:44:44,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:44:44,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:44:44,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:44:45,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:44:45,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:44:45,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119543304] [2024-06-20 16:44:45,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119543304] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:44:45,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:44:45,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:44:45,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556293307] [2024-06-20 16:44:45,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:44:45,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:44:45,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:44:45,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:44:45,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:44:45,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:44:45,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 243 transitions, 2267 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:44:45,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:44:45,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:44:45,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:44:46,148 INFO L124 PetriNetUnfolderBase]: 562/1164 cut-off events. [2024-06-20 16:44:46,148 INFO L125 PetriNetUnfolderBase]: For 176628/176628 co-relation queries the response was YES. [2024-06-20 16:44:46,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7175 conditions, 1164 events. 562/1164 cut-off events. For 176628/176628 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 7077 event pairs, 97 based on Foata normal form. 10/1173 useless extension candidates. Maximal degree in co-relation 7034. Up to 747 conditions per place. [2024-06-20 16:44:46,157 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 150 selfloop transitions, 96 changer transitions 9/258 dead transitions. [2024-06-20 16:44:46,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 258 transitions, 2891 flow [2024-06-20 16:44:46,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:44:46,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:44:46,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-20 16:44:46,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4310850439882698 [2024-06-20 16:44:46,158 INFO L175 Difference]: Start difference. First operand has 318 places, 243 transitions, 2267 flow. Second operand 11 states and 147 transitions. [2024-06-20 16:44:46,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 258 transitions, 2891 flow [2024-06-20 16:44:46,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 258 transitions, 2677 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-20 16:44:46,548 INFO L231 Difference]: Finished difference. Result has 322 places, 238 transitions, 2241 flow [2024-06-20 16:44:46,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2063, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2241, PETRI_PLACES=322, PETRI_TRANSITIONS=238} [2024-06-20 16:44:46,548 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 292 predicate places. [2024-06-20 16:44:46,548 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 238 transitions, 2241 flow [2024-06-20 16:44:46,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:44:46,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:44:46,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:44:46,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-20 16:44:46,548 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)] === [2024-06-20 16:44:46,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:44:46,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1895633914, now seen corresponding path program 30 times [2024-06-20 16:44:46,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:44:46,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430859911] [2024-06-20 16:44:46,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:44:46,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:44:46,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:44:47,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:44:47,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:44:47,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430859911] [2024-06-20 16:44:47,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430859911] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:44:47,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:44:47,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:44:47,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130400394] [2024-06-20 16:44:47,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:44:47,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:44:47,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:44:47,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:44:47,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:44:48,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:44:48,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 238 transitions, 2241 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:44:48,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:44:48,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:44:48,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:44:48,465 INFO L124 PetriNetUnfolderBase]: 544/1126 cut-off events. [2024-06-20 16:44:48,465 INFO L125 PetriNetUnfolderBase]: For 132152/132152 co-relation queries the response was YES. [2024-06-20 16:44:48,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7062 conditions, 1126 events. 544/1126 cut-off events. For 132152/132152 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6808 event pairs, 94 based on Foata normal form. 2/1127 useless extension candidates. Maximal degree in co-relation 6932. Up to 887 conditions per place. [2024-06-20 16:44:48,477 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 190 selfloop transitions, 58 changer transitions 0/251 dead transitions. [2024-06-20 16:44:48,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 251 transitions, 2805 flow [2024-06-20 16:44:48,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:44:48,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:44:48,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-20 16:44:48,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40175953079178883 [2024-06-20 16:44:48,478 INFO L175 Difference]: Start difference. First operand has 322 places, 238 transitions, 2241 flow. Second operand 11 states and 137 transitions. [2024-06-20 16:44:48,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 251 transitions, 2805 flow [2024-06-20 16:44:48,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 251 transitions, 2584 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-20 16:44:48,969 INFO L231 Difference]: Finished difference. Result has 322 places, 239 transitions, 2184 flow [2024-06-20 16:44:48,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2020, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2184, PETRI_PLACES=322, PETRI_TRANSITIONS=239} [2024-06-20 16:44:48,970 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 292 predicate places. [2024-06-20 16:44:48,970 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 239 transitions, 2184 flow [2024-06-20 16:44:48,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:44:48,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:44:48,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:44:48,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-20 16:44:48,970 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)] === [2024-06-20 16:44:48,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:44:48,971 INFO L85 PathProgramCache]: Analyzing trace with hash 430953488, now seen corresponding path program 31 times [2024-06-20 16:44:48,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:44:48,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373221200] [2024-06-20 16:44:48,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:44:48,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:44:48,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:44:50,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:44:50,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:44:50,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373221200] [2024-06-20 16:44:50,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373221200] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:44:50,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:44:50,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:44:50,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536323057] [2024-06-20 16:44:50,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:44:50,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:44:50,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:44:50,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:44:50,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:44:50,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:44:50,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 239 transitions, 2184 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:44:50,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:44:50,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:44:50,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:44:50,666 INFO L124 PetriNetUnfolderBase]: 556/1154 cut-off events. [2024-06-20 16:44:50,666 INFO L125 PetriNetUnfolderBase]: For 168075/168075 co-relation queries the response was YES. [2024-06-20 16:44:50,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7130 conditions, 1154 events. 556/1154 cut-off events. For 168075/168075 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6988 event pairs, 95 based on Foata normal form. 8/1161 useless extension candidates. Maximal degree in co-relation 6999. Up to 972 conditions per place. [2024-06-20 16:44:50,677 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 209 selfloop transitions, 31 changer transitions 11/254 dead transitions. [2024-06-20 16:44:50,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 254 transitions, 2770 flow [2024-06-20 16:44:50,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:44:50,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:44:50,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-20 16:44:50,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-20 16:44:50,678 INFO L175 Difference]: Start difference. First operand has 322 places, 239 transitions, 2184 flow. Second operand 11 states and 129 transitions. [2024-06-20 16:44:50,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 254 transitions, 2770 flow [2024-06-20 16:44:51,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 254 transitions, 2616 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-20 16:44:51,098 INFO L231 Difference]: Finished difference. Result has 324 places, 236 transitions, 2070 flow [2024-06-20 16:44:51,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2030, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2070, PETRI_PLACES=324, PETRI_TRANSITIONS=236} [2024-06-20 16:44:51,098 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 294 predicate places. [2024-06-20 16:44:51,098 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 236 transitions, 2070 flow [2024-06-20 16:44:51,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:44:51,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:44:51,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:44:51,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-20 16:44:51,099 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)] === [2024-06-20 16:44:51,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:44:51,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1923522698, now seen corresponding path program 32 times [2024-06-20 16:44:51,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:44:51,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235042759] [2024-06-20 16:44:51,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:44:51,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:44:51,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:44:52,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:44:52,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:44:52,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235042759] [2024-06-20 16:44:52,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235042759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:44:52,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:44:52,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:44:52,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999827993] [2024-06-20 16:44:52,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:44:52,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:44:52,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:44:52,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:44:52,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:44:52,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:44:52,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 236 transitions, 2070 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:44:52,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:44:52,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:44:52,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:44:52,885 INFO L124 PetriNetUnfolderBase]: 524/1086 cut-off events. [2024-06-20 16:44:52,885 INFO L125 PetriNetUnfolderBase]: For 124834/124834 co-relation queries the response was YES. [2024-06-20 16:44:52,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5564 conditions, 1086 events. 524/1086 cut-off events. For 124834/124834 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6545 event pairs, 107 based on Foata normal form. 10/1095 useless extension candidates. Maximal degree in co-relation 5432. Up to 940 conditions per place. [2024-06-20 16:44:52,896 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 213 selfloop transitions, 26 changer transitions 8/250 dead transitions. [2024-06-20 16:44:52,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 250 transitions, 2636 flow [2024-06-20 16:44:52,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:44:52,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:44:52,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-20 16:44:52,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-20 16:44:52,897 INFO L175 Difference]: Start difference. First operand has 324 places, 236 transitions, 2070 flow. Second operand 11 states and 132 transitions. [2024-06-20 16:44:52,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 250 transitions, 2636 flow [2024-06-20 16:44:53,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 250 transitions, 2546 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-20 16:44:53,145 INFO L231 Difference]: Finished difference. Result has 320 places, 231 transitions, 2000 flow [2024-06-20 16:44:53,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1980, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2000, PETRI_PLACES=320, PETRI_TRANSITIONS=231} [2024-06-20 16:44:53,146 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 290 predicate places. [2024-06-20 16:44:53,146 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 231 transitions, 2000 flow [2024-06-20 16:44:53,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:44:53,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:44:53,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:44:53,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-20 16:44:53,147 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)] === [2024-06-20 16:44:53,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:44:53,147 INFO L85 PathProgramCache]: Analyzing trace with hash 426369518, now seen corresponding path program 33 times [2024-06-20 16:44:53,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:44:53,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857132093] [2024-06-20 16:44:53,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:44:53,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:44:53,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:44:54,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:44:54,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:44:54,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857132093] [2024-06-20 16:44:54,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857132093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:44:54,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:44:54,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:44:54,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698414238] [2024-06-20 16:44:54,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:44:54,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:44:54,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:44:54,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:44:54,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:44:54,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:44:54,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 231 transitions, 2000 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:44:54,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:44:54,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:44:54,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:44:54,927 INFO L124 PetriNetUnfolderBase]: 508/1060 cut-off events. [2024-06-20 16:44:54,927 INFO L125 PetriNetUnfolderBase]: For 95278/95278 co-relation queries the response was YES. [2024-06-20 16:44:54,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5094 conditions, 1060 events. 508/1060 cut-off events. For 95278/95278 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 6415 event pairs, 75 based on Foata normal form. 8/1067 useless extension candidates. Maximal degree in co-relation 4964. Up to 879 conditions per place. [2024-06-20 16:44:54,937 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 200 selfloop transitions, 29 changer transitions 14/246 dead transitions. [2024-06-20 16:44:54,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 246 transitions, 2528 flow [2024-06-20 16:44:54,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:44:54,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:44:54,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-20 16:44:54,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-20 16:44:54,938 INFO L175 Difference]: Start difference. First operand has 320 places, 231 transitions, 2000 flow. Second operand 11 states and 129 transitions. [2024-06-20 16:44:54,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 246 transitions, 2528 flow [2024-06-20 16:44:55,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 246 transitions, 2457 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-20 16:44:55,205 INFO L231 Difference]: Finished difference. Result has 320 places, 226 transitions, 1923 flow [2024-06-20 16:44:55,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1929, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1923, PETRI_PLACES=320, PETRI_TRANSITIONS=226} [2024-06-20 16:44:55,206 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 290 predicate places. [2024-06-20 16:44:55,206 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 226 transitions, 1923 flow [2024-06-20 16:44:55,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:44:55,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:44:55,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:44:55,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-20 16:44:55,206 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)] === [2024-06-20 16:44:55,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:44:55,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1452652272, now seen corresponding path program 14 times [2024-06-20 16:44:55,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:44:55,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973783344] [2024-06-20 16:44:55,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:44:55,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:44:55,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:44:56,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:44:56,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:44:56,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973783344] [2024-06-20 16:44:56,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973783344] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:44:56,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:44:56,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:44:56,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12655158] [2024-06-20 16:44:56,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:44:56,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:44:56,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:44:56,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:44:56,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:44:56,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:44:56,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 226 transitions, 1923 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:44:56,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:44:56,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:44:56,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:44:57,448 INFO L124 PetriNetUnfolderBase]: 497/1041 cut-off events. [2024-06-20 16:44:57,448 INFO L125 PetriNetUnfolderBase]: For 98800/98800 co-relation queries the response was YES. [2024-06-20 16:44:57,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4999 conditions, 1041 events. 497/1041 cut-off events. For 98800/98800 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6298 event pairs, 82 based on Foata normal form. 8/1048 useless extension candidates. Maximal degree in co-relation 4868. Up to 824 conditions per place. [2024-06-20 16:44:57,458 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 191 selfloop transitions, 40 changer transitions 7/241 dead transitions. [2024-06-20 16:44:57,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 241 transitions, 2473 flow [2024-06-20 16:44:57,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:44:57,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:44:57,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-20 16:44:57,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-20 16:44:57,459 INFO L175 Difference]: Start difference. First operand has 320 places, 226 transitions, 1923 flow. Second operand 12 states and 144 transitions. [2024-06-20 16:44:57,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 241 transitions, 2473 flow [2024-06-20 16:44:57,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 241 transitions, 2160 flow, removed 5 selfloop flow, removed 17 redundant places. [2024-06-20 16:44:57,650 INFO L231 Difference]: Finished difference. Result has 308 places, 223 transitions, 1680 flow [2024-06-20 16:44:57,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1612, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1680, PETRI_PLACES=308, PETRI_TRANSITIONS=223} [2024-06-20 16:44:57,651 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 278 predicate places. [2024-06-20 16:44:57,651 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 223 transitions, 1680 flow [2024-06-20 16:44:57,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:44:57,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:44:57,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:44:57,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-20 16:44:57,651 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)] === [2024-06-20 16:44:57,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:44:57,652 INFO L85 PathProgramCache]: Analyzing trace with hash 185159194, now seen corresponding path program 15 times [2024-06-20 16:44:57,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:44:57,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453976107] [2024-06-20 16:44:57,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:44:57,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:44:57,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:44:59,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:44:59,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:44:59,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453976107] [2024-06-20 16:44:59,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453976107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:44:59,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:44:59,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:44:59,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178703794] [2024-06-20 16:44:59,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:44:59,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:44:59,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:44:59,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:44:59,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:44:59,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:44:59,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 223 transitions, 1680 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:44:59,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:44:59,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:44:59,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:44:59,762 INFO L124 PetriNetUnfolderBase]: 510/1072 cut-off events. [2024-06-20 16:44:59,762 INFO L125 PetriNetUnfolderBase]: For 129861/129861 co-relation queries the response was YES. [2024-06-20 16:44:59,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5548 conditions, 1072 events. 510/1072 cut-off events. For 129861/129861 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 6478 event pairs, 88 based on Foata normal form. 6/1077 useless extension candidates. Maximal degree in co-relation 5426. Up to 816 conditions per place. [2024-06-20 16:44:59,772 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 194 selfloop transitions, 38 changer transitions 7/242 dead transitions. [2024-06-20 16:44:59,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 242 transitions, 2486 flow [2024-06-20 16:44:59,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:44:59,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:44:59,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-20 16:44:59,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3897849462365591 [2024-06-20 16:44:59,773 INFO L175 Difference]: Start difference. First operand has 308 places, 223 transitions, 1680 flow. Second operand 12 states and 145 transitions. [2024-06-20 16:44:59,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 242 transitions, 2486 flow [2024-06-20 16:45:00,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 242 transitions, 2396 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-20 16:45:00,050 INFO L231 Difference]: Finished difference. Result has 306 places, 220 transitions, 1653 flow [2024-06-20 16:45:00,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1594, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1653, PETRI_PLACES=306, PETRI_TRANSITIONS=220} [2024-06-20 16:45:00,051 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 276 predicate places. [2024-06-20 16:45:00,051 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 220 transitions, 1653 flow [2024-06-20 16:45:00,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:45:00,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:45:00,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:45:00,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-20 16:45:00,051 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)] === [2024-06-20 16:45:00,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:45:00,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1733018872, now seen corresponding path program 16 times [2024-06-20 16:45:00,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:45:00,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050382100] [2024-06-20 16:45:00,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:45:00,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:45:00,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:45:01,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:45:01,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:45:01,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050382100] [2024-06-20 16:45:01,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050382100] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:45:01,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:45:01,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:45:01,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638811] [2024-06-20 16:45:01,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:45:01,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:45:01,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:45:01,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:45:01,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:45:02,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:45:02,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 220 transitions, 1653 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:45:02,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:45:02,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:45:02,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:45:02,512 INFO L124 PetriNetUnfolderBase]: 507/1067 cut-off events. [2024-06-20 16:45:02,512 INFO L125 PetriNetUnfolderBase]: For 141198/141198 co-relation queries the response was YES. [2024-06-20 16:45:02,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5515 conditions, 1067 events. 507/1067 cut-off events. For 141198/141198 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 6438 event pairs, 93 based on Foata normal form. 8/1074 useless extension candidates. Maximal degree in co-relation 5394. Up to 756 conditions per place. [2024-06-20 16:45:02,521 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 152 selfloop transitions, 71 changer transitions 9/235 dead transitions. [2024-06-20 16:45:02,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 235 transitions, 2189 flow [2024-06-20 16:45:02,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:45:02,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:45:02,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-20 16:45:02,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-20 16:45:02,522 INFO L175 Difference]: Start difference. First operand has 306 places, 220 transitions, 1653 flow. Second operand 12 states and 148 transitions. [2024-06-20 16:45:02,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 235 transitions, 2189 flow [2024-06-20 16:45:02,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 235 transitions, 2111 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-20 16:45:02,849 INFO L231 Difference]: Finished difference. Result has 304 places, 217 transitions, 1702 flow [2024-06-20 16:45:02,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1575, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1702, PETRI_PLACES=304, PETRI_TRANSITIONS=217} [2024-06-20 16:45:02,850 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 274 predicate places. [2024-06-20 16:45:02,850 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 217 transitions, 1702 flow [2024-06-20 16:45:02,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:45:02,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:45:02,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:45:02,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-20 16:45:02,850 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)] === [2024-06-20 16:45:02,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:45:02,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1732779862, now seen corresponding path program 17 times [2024-06-20 16:45:02,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:45:02,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872913837] [2024-06-20 16:45:02,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:45:02,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:45:02,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:45:04,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:45:04,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:45:04,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872913837] [2024-06-20 16:45:04,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872913837] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:45:04,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:45:04,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:45:04,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058335894] [2024-06-20 16:45:04,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:45:04,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:45:04,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:45:04,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:45:04,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:45:04,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:45:04,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 217 transitions, 1702 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:45:04,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:45:04,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:45:04,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:45:04,843 INFO L124 PetriNetUnfolderBase]: 520/1102 cut-off events. [2024-06-20 16:45:04,843 INFO L125 PetriNetUnfolderBase]: For 169025/169025 co-relation queries the response was YES. [2024-06-20 16:45:04,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6573 conditions, 1102 events. 520/1102 cut-off events. For 169025/169025 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 6675 event pairs, 102 based on Foata normal form. 6/1107 useless extension candidates. Maximal degree in co-relation 6453. Up to 715 conditions per place. [2024-06-20 16:45:04,854 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 154 selfloop transitions, 72 changer transitions 7/236 dead transitions. [2024-06-20 16:45:04,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 236 transitions, 2492 flow [2024-06-20 16:45:04,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:45:04,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:45:04,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-20 16:45:04,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40860215053763443 [2024-06-20 16:45:04,854 INFO L175 Difference]: Start difference. First operand has 304 places, 217 transitions, 1702 flow. Second operand 12 states and 152 transitions. [2024-06-20 16:45:04,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 236 transitions, 2492 flow [2024-06-20 16:45:05,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 236 transitions, 2342 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-20 16:45:05,288 INFO L231 Difference]: Finished difference. Result has 302 places, 214 transitions, 1687 flow [2024-06-20 16:45:05,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1556, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1687, PETRI_PLACES=302, PETRI_TRANSITIONS=214} [2024-06-20 16:45:05,288 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 272 predicate places. [2024-06-20 16:45:05,289 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 214 transitions, 1687 flow [2024-06-20 16:45:05,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:45:05,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:45:05,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:45:05,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-20 16:45:05,289 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)] === [2024-06-20 16:45:05,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:45:05,289 INFO L85 PathProgramCache]: Analyzing trace with hash 2132002218, now seen corresponding path program 18 times [2024-06-20 16:45:05,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:45:05,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82626843] [2024-06-20 16:45:05,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:45:05,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:45:05,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:45:07,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:45:07,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:45:07,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82626843] [2024-06-20 16:45:07,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82626843] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:45:07,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:45:07,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:45:07,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528396392] [2024-06-20 16:45:07,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:45:07,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:45:07,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:45:07,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:45:07,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:45:07,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:45:07,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 214 transitions, 1687 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:45:07,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:45:07,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:45:07,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:45:08,069 INFO L124 PetriNetUnfolderBase]: 535/1135 cut-off events. [2024-06-20 16:45:08,069 INFO L125 PetriNetUnfolderBase]: For 208670/208670 co-relation queries the response was YES. [2024-06-20 16:45:08,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7571 conditions, 1135 events. 535/1135 cut-off events. For 208670/208670 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 6935 event pairs, 114 based on Foata normal form. 6/1140 useless extension candidates. Maximal degree in co-relation 7452. Up to 818 conditions per place. [2024-06-20 16:45:08,080 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 168 selfloop transitions, 52 changer transitions 9/232 dead transitions. [2024-06-20 16:45:08,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 232 transitions, 2465 flow [2024-06-20 16:45:08,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:45:08,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:45:08,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-20 16:45:08,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41642228739002934 [2024-06-20 16:45:08,081 INFO L175 Difference]: Start difference. First operand has 302 places, 214 transitions, 1687 flow. Second operand 11 states and 142 transitions. [2024-06-20 16:45:08,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 232 transitions, 2465 flow [2024-06-20 16:45:08,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 232 transitions, 2315 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-20 16:45:08,688 INFO L231 Difference]: Finished difference. Result has 299 places, 209 transitions, 1616 flow [2024-06-20 16:45:08,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1541, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1616, PETRI_PLACES=299, PETRI_TRANSITIONS=209} [2024-06-20 16:45:08,688 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 269 predicate places. [2024-06-20 16:45:08,689 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 209 transitions, 1616 flow [2024-06-20 16:45:08,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:45:08,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:45:08,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:45:08,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-20 16:45:08,689 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)] === [2024-06-20 16:45:08,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:45:08,690 INFO L85 PathProgramCache]: Analyzing trace with hash 2132290518, now seen corresponding path program 19 times [2024-06-20 16:45:08,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:45:08,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146536170] [2024-06-20 16:45:08,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:45:08,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:45:08,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:45:10,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:45:10,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:45:10,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146536170] [2024-06-20 16:45:10,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146536170] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:45:10,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:45:10,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:45:10,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712917163] [2024-06-20 16:45:10,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:45:10,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:45:10,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:45:10,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:45:10,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:45:10,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:45:10,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 209 transitions, 1616 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:45:10,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:45:10,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:45:10,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:45:11,231 INFO L124 PetriNetUnfolderBase]: 562/1192 cut-off events. [2024-06-20 16:45:11,231 INFO L125 PetriNetUnfolderBase]: For 284157/284157 co-relation queries the response was YES. [2024-06-20 16:45:11,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9214 conditions, 1192 events. 562/1192 cut-off events. For 284157/284157 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 7334 event pairs, 135 based on Foata normal form. 6/1197 useless extension candidates. Maximal degree in co-relation 9096. Up to 775 conditions per place. [2024-06-20 16:45:11,243 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 161 selfloop transitions, 55 changer transitions 10/229 dead transitions. [2024-06-20 16:45:11,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 229 transitions, 2390 flow [2024-06-20 16:45:11,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:45:11,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:45:11,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-20 16:45:11,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40053763440860213 [2024-06-20 16:45:11,244 INFO L175 Difference]: Start difference. First operand has 299 places, 209 transitions, 1616 flow. Second operand 12 states and 149 transitions. [2024-06-20 16:45:11,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 229 transitions, 2390 flow [2024-06-20 16:45:11,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 229 transitions, 2279 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-20 16:45:11,944 INFO L231 Difference]: Finished difference. Result has 297 places, 205 transitions, 1598 flow [2024-06-20 16:45:11,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1509, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1598, PETRI_PLACES=297, PETRI_TRANSITIONS=205} [2024-06-20 16:45:11,945 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 267 predicate places. [2024-06-20 16:45:11,945 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 205 transitions, 1598 flow [2024-06-20 16:45:11,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:45:11,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:45:11,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:45:11,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-20 16:45:11,946 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)] === [2024-06-20 16:45:11,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:45:11,946 INFO L85 PathProgramCache]: Analyzing trace with hash 567044896, now seen corresponding path program 20 times [2024-06-20 16:45:11,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:45:11,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420338612] [2024-06-20 16:45:11,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:45:11,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:45:11,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:45:13,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:45:13,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:45:13,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420338612] [2024-06-20 16:45:13,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420338612] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:45:13,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:45:13,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:45:13,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490159587] [2024-06-20 16:45:13,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:45:13,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:45:13,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:45:13,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:45:13,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:45:14,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:45:14,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 205 transitions, 1598 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:45:14,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:45:14,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:45:14,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:45:14,703 INFO L124 PetriNetUnfolderBase]: 533/1129 cut-off events. [2024-06-20 16:45:14,703 INFO L125 PetriNetUnfolderBase]: For 249864/249864 co-relation queries the response was YES. [2024-06-20 16:45:14,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8101 conditions, 1129 events. 533/1129 cut-off events. For 249864/249864 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 6887 event pairs, 126 based on Foata normal form. 8/1136 useless extension candidates. Maximal degree in co-relation 7984. Up to 822 conditions per place. [2024-06-20 16:45:14,713 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 139 selfloop transitions, 69 changer transitions 9/220 dead transitions. [2024-06-20 16:45:14,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 220 transitions, 2104 flow [2024-06-20 16:45:14,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:45:14,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:45:14,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-20 16:45:14,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3951612903225806 [2024-06-20 16:45:14,714 INFO L175 Difference]: Start difference. First operand has 297 places, 205 transitions, 1598 flow. Second operand 12 states and 147 transitions. [2024-06-20 16:45:14,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 220 transitions, 2104 flow [2024-06-20 16:45:15,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 220 transitions, 1971 flow, removed 3 selfloop flow, removed 15 redundant places. [2024-06-20 16:45:15,469 INFO L231 Difference]: Finished difference. Result has 290 places, 202 transitions, 1586 flow [2024-06-20 16:45:15,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1465, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1586, PETRI_PLACES=290, PETRI_TRANSITIONS=202} [2024-06-20 16:45:15,469 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 260 predicate places. [2024-06-20 16:45:15,470 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 202 transitions, 1586 flow [2024-06-20 16:45:15,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:45:15,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:45:15,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:45:15,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-20 16:45:15,470 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)] === [2024-06-20 16:45:15,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:45:15,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1974184930, now seen corresponding path program 21 times [2024-06-20 16:45:15,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:45:15,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556960276] [2024-06-20 16:45:15,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:45:15,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:45:15,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:45:17,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:45:17,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:45:17,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556960276] [2024-06-20 16:45:17,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556960276] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:45:17,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:45:17,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:45:17,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39428270] [2024-06-20 16:45:17,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:45:17,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:45:17,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:45:17,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:45:17,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:45:17,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:45:17,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 202 transitions, 1586 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:45:17,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:45:17,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:45:17,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:45:17,759 INFO L124 PetriNetUnfolderBase]: 536/1146 cut-off events. [2024-06-20 16:45:17,759 INFO L125 PetriNetUnfolderBase]: For 265288/265288 co-relation queries the response was YES. [2024-06-20 16:45:17,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8078 conditions, 1146 events. 536/1146 cut-off events. For 265288/265288 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 7045 event pairs, 134 based on Foata normal form. 14/1159 useless extension candidates. Maximal degree in co-relation 7963. Up to 905 conditions per place. [2024-06-20 16:45:17,770 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 159 selfloop transitions, 42 changer transitions 13/217 dead transitions. [2024-06-20 16:45:17,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 217 transitions, 2086 flow [2024-06-20 16:45:17,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:45:17,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:45:17,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-20 16:45:17,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3951612903225806 [2024-06-20 16:45:17,771 INFO L175 Difference]: Start difference. First operand has 290 places, 202 transitions, 1586 flow. Second operand 12 states and 147 transitions. [2024-06-20 16:45:17,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 217 transitions, 2086 flow [2024-06-20 16:45:18,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 217 transitions, 1940 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-20 16:45:18,551 INFO L231 Difference]: Finished difference. Result has 287 places, 196 transitions, 1493 flow [2024-06-20 16:45:18,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1442, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1493, PETRI_PLACES=287, PETRI_TRANSITIONS=196} [2024-06-20 16:45:18,551 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 257 predicate places. [2024-06-20 16:45:18,552 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 196 transitions, 1493 flow [2024-06-20 16:45:18,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:45:18,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:45:18,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:45:18,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-20 16:45:18,552 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)] === [2024-06-20 16:45:18,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:45:18,552 INFO L85 PathProgramCache]: Analyzing trace with hash 178664074, now seen corresponding path program 22 times [2024-06-20 16:45:18,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:45:18,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371272136] [2024-06-20 16:45:18,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:45:18,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:45:18,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:45:20,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:45:20,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:45:20,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371272136] [2024-06-20 16:45:20,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371272136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:45:20,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:45:20,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:45:20,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284921488] [2024-06-20 16:45:20,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:45:20,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:45:20,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:45:20,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:45:20,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:45:20,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:45:20,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 196 transitions, 1493 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:45:20,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:45:20,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:45:20,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:45:21,080 INFO L124 PetriNetUnfolderBase]: 494/1058 cut-off events. [2024-06-20 16:45:21,080 INFO L125 PetriNetUnfolderBase]: For 188743/188743 co-relation queries the response was YES. [2024-06-20 16:45:21,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6801 conditions, 1058 events. 494/1058 cut-off events. For 188743/188743 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 6382 event pairs, 117 based on Foata normal form. 8/1065 useless extension candidates. Maximal degree in co-relation 6687. Up to 849 conditions per place. [2024-06-20 16:45:21,089 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 164 selfloop transitions, 37 changer transitions 7/211 dead transitions. [2024-06-20 16:45:21,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 211 transitions, 1979 flow [2024-06-20 16:45:21,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:45:21,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:45:21,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-20 16:45:21,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-20 16:45:21,090 INFO L175 Difference]: Start difference. First operand has 287 places, 196 transitions, 1493 flow. Second operand 12 states and 141 transitions. [2024-06-20 16:45:21,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 211 transitions, 1979 flow [2024-06-20 16:45:21,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 211 transitions, 1887 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-20 16:45:21,599 INFO L231 Difference]: Finished difference. Result has 281 places, 193 transitions, 1459 flow [2024-06-20 16:45:21,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1401, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1459, PETRI_PLACES=281, PETRI_TRANSITIONS=193} [2024-06-20 16:45:21,599 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 251 predicate places. [2024-06-20 16:45:21,599 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 193 transitions, 1459 flow [2024-06-20 16:45:21,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:45:21,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:45:21,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:45:21,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-20 16:45:21,599 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)] === [2024-06-20 16:45:21,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:45:21,600 INFO L85 PathProgramCache]: Analyzing trace with hash 2123719638, now seen corresponding path program 23 times [2024-06-20 16:45:21,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:45:21,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846676338] [2024-06-20 16:45:21,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:45:21,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:45:21,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:45:23,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:45:23,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:45:23,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846676338] [2024-06-20 16:45:23,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846676338] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:45:23,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:45:23,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:45:23,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695109463] [2024-06-20 16:45:23,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:45:23,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:45:23,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:45:23,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:45:23,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:45:23,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:45:23,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 193 transitions, 1459 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:45:23,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:45:23,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:45:23,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:45:24,178 INFO L124 PetriNetUnfolderBase]: 467/1005 cut-off events. [2024-06-20 16:45:24,178 INFO L125 PetriNetUnfolderBase]: For 140973/140973 co-relation queries the response was YES. [2024-06-20 16:45:24,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5679 conditions, 1005 events. 467/1005 cut-off events. For 140973/140973 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 6004 event pairs, 104 based on Foata normal form. 8/1012 useless extension candidates. Maximal degree in co-relation 5568. Up to 799 conditions per place. [2024-06-20 16:45:24,187 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 153 selfloop transitions, 43 changer transitions 9/208 dead transitions. [2024-06-20 16:45:24,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 208 transitions, 1939 flow [2024-06-20 16:45:24,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:45:24,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:45:24,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-20 16:45:24,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3844086021505376 [2024-06-20 16:45:24,187 INFO L175 Difference]: Start difference. First operand has 281 places, 193 transitions, 1459 flow. Second operand 12 states and 143 transitions. [2024-06-20 16:45:24,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 208 transitions, 1939 flow [2024-06-20 16:45:24,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 208 transitions, 1859 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-20 16:45:24,542 INFO L231 Difference]: Finished difference. Result has 278 places, 190 transitions, 1447 flow [2024-06-20 16:45:24,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1379, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1447, PETRI_PLACES=278, PETRI_TRANSITIONS=190} [2024-06-20 16:45:24,542 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 248 predicate places. [2024-06-20 16:45:24,542 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 190 transitions, 1447 flow [2024-06-20 16:45:24,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:45:24,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:45:24,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:45:24,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-20 16:45:24,543 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)] === [2024-06-20 16:45:24,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:45:24,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1902313608, now seen corresponding path program 24 times [2024-06-20 16:45:24,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:45:24,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874858961] [2024-06-20 16:45:24,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:45:24,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:45:24,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:45:26,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:45:26,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:45:26,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874858961] [2024-06-20 16:45:26,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874858961] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:45:26,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:45:26,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:45:26,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567032921] [2024-06-20 16:45:26,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:45:26,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:45:26,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:45:26,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:45:26,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:45:26,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:45:26,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 190 transitions, 1447 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:45:26,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:45:26,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:45:26,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:45:26,654 INFO L124 PetriNetUnfolderBase]: 458/990 cut-off events. [2024-06-20 16:45:26,654 INFO L125 PetriNetUnfolderBase]: For 128635/128635 co-relation queries the response was YES. [2024-06-20 16:45:26,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5593 conditions, 990 events. 458/990 cut-off events. For 128635/128635 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 5906 event pairs, 99 based on Foata normal form. 6/995 useless extension candidates. Maximal degree in co-relation 5483. Up to 712 conditions per place. [2024-06-20 16:45:26,662 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 157 selfloop transitions, 41 changer transitions 8/209 dead transitions. [2024-06-20 16:45:26,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 209 transitions, 2161 flow [2024-06-20 16:45:26,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:45:26,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:45:26,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-20 16:45:26,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3951612903225806 [2024-06-20 16:45:26,663 INFO L175 Difference]: Start difference. First operand has 278 places, 190 transitions, 1447 flow. Second operand 12 states and 147 transitions. [2024-06-20 16:45:26,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 209 transitions, 2161 flow [2024-06-20 16:45:27,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 209 transitions, 2067 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-20 16:45:27,002 INFO L231 Difference]: Finished difference. Result has 276 places, 186 transitions, 1421 flow [2024-06-20 16:45:27,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1357, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1421, PETRI_PLACES=276, PETRI_TRANSITIONS=186} [2024-06-20 16:45:27,003 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 246 predicate places. [2024-06-20 16:45:27,003 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 186 transitions, 1421 flow [2024-06-20 16:45:27,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:45:27,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:45:27,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:45:27,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-20 16:45:27,003 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)] === [2024-06-20 16:45:27,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:45:27,003 INFO L85 PathProgramCache]: Analyzing trace with hash 258246032, now seen corresponding path program 25 times [2024-06-20 16:45:27,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:45:27,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997461021] [2024-06-20 16:45:27,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:45:27,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:45:27,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:45:28,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:45:28,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:45:28,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997461021] [2024-06-20 16:45:28,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997461021] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:45:28,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:45:28,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:45:28,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338351383] [2024-06-20 16:45:28,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:45:28,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:45:28,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:45:28,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:45:28,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:45:28,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:45:28,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 186 transitions, 1421 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:45:28,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:45:28,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:45:28,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:45:29,450 INFO L124 PetriNetUnfolderBase]: 432/932 cut-off events. [2024-06-20 16:45:29,451 INFO L125 PetriNetUnfolderBase]: For 100141/100141 co-relation queries the response was YES. [2024-06-20 16:45:29,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4571 conditions, 932 events. 432/932 cut-off events. For 100141/100141 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 5505 event pairs, 90 based on Foata normal form. 8/939 useless extension candidates. Maximal degree in co-relation 4462. Up to 733 conditions per place. [2024-06-20 16:45:29,458 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 150 selfloop transitions, 39 changer transitions 9/201 dead transitions. [2024-06-20 16:45:29,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 201 transitions, 1887 flow [2024-06-20 16:45:29,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:45:29,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:45:29,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-20 16:45:29,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-20 16:45:29,459 INFO L175 Difference]: Start difference. First operand has 276 places, 186 transitions, 1421 flow. Second operand 12 states and 141 transitions. [2024-06-20 16:45:29,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 201 transitions, 1887 flow [2024-06-20 16:45:29,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 201 transitions, 1801 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-20 16:45:29,674 INFO L231 Difference]: Finished difference. Result has 272 places, 183 transitions, 1395 flow [2024-06-20 16:45:29,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1335, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1395, PETRI_PLACES=272, PETRI_TRANSITIONS=183} [2024-06-20 16:45:29,674 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 242 predicate places. [2024-06-20 16:45:29,674 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 183 transitions, 1395 flow [2024-06-20 16:45:29,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:45:29,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:45:29,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:45:29,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-20 16:45:29,674 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)] === [2024-06-20 16:45:29,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:45:29,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1146021008, now seen corresponding path program 26 times [2024-06-20 16:45:29,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:45:29,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812700318] [2024-06-20 16:45:29,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:45:29,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:45:29,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:45:31,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:45:31,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:45:31,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812700318] [2024-06-20 16:45:31,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812700318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:45:31,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:45:31,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:45:31,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619259828] [2024-06-20 16:45:31,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:45:31,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:45:31,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:45:31,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:45:31,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:45:31,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:45:31,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 183 transitions, 1395 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:45:31,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:45:31,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:45:31,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:45:32,122 INFO L124 PetriNetUnfolderBase]: 427/929 cut-off events. [2024-06-20 16:45:32,122 INFO L125 PetriNetUnfolderBase]: For 97648/97648 co-relation queries the response was YES. [2024-06-20 16:45:32,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4508 conditions, 929 events. 427/929 cut-off events. For 97648/97648 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 5492 event pairs, 92 based on Foata normal form. 8/936 useless extension candidates. Maximal degree in co-relation 4401. Up to 626 conditions per place. [2024-06-20 16:45:32,129 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 127 selfloop transitions, 59 changer transitions 9/198 dead transitions. [2024-06-20 16:45:32,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 198 transitions, 1855 flow [2024-06-20 16:45:32,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:45:32,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:45:32,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-20 16:45:32,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40053763440860213 [2024-06-20 16:45:32,130 INFO L175 Difference]: Start difference. First operand has 272 places, 183 transitions, 1395 flow. Second operand 12 states and 149 transitions. [2024-06-20 16:45:32,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 198 transitions, 1855 flow [2024-06-20 16:45:32,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 198 transitions, 1773 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-20 16:45:32,360 INFO L231 Difference]: Finished difference. Result has 268 places, 180 transitions, 1417 flow [2024-06-20 16:45:32,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1313, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1417, PETRI_PLACES=268, PETRI_TRANSITIONS=180} [2024-06-20 16:45:32,360 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 238 predicate places. [2024-06-20 16:45:32,360 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 180 transitions, 1417 flow [2024-06-20 16:45:32,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:45:32,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:45:32,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:45:32,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-20 16:45:32,361 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)] === [2024-06-20 16:45:32,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:45:32,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1511134822, now seen corresponding path program 27 times [2024-06-20 16:45:32,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:45:32,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295631654] [2024-06-20 16:45:32,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:45:32,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:45:32,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:45:33,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:45:33,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:45:33,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295631654] [2024-06-20 16:45:33,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295631654] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:45:33,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:45:33,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:45:33,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719312590] [2024-06-20 16:45:33,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:45:33,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:45:33,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:45:33,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:45:33,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:45:33,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:45:33,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 180 transitions, 1417 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:45:33,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:45:33,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:45:33,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:45:34,297 INFO L124 PetriNetUnfolderBase]: 418/918 cut-off events. [2024-06-20 16:45:34,297 INFO L125 PetriNetUnfolderBase]: For 85213/85213 co-relation queries the response was YES. [2024-06-20 16:45:34,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4477 conditions, 918 events. 418/918 cut-off events. For 85213/85213 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 5422 event pairs, 89 based on Foata normal form. 6/923 useless extension candidates. Maximal degree in co-relation 4371. Up to 592 conditions per place. [2024-06-20 16:45:34,304 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 124 selfloop transitions, 58 changer transitions 10/195 dead transitions. [2024-06-20 16:45:34,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 195 transitions, 1863 flow [2024-06-20 16:45:34,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:45:34,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:45:34,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-20 16:45:34,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40053763440860213 [2024-06-20 16:45:34,305 INFO L175 Difference]: Start difference. First operand has 268 places, 180 transitions, 1417 flow. Second operand 12 states and 149 transitions. [2024-06-20 16:45:34,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 195 transitions, 1863 flow [2024-06-20 16:45:34,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 195 transitions, 1741 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-20 16:45:34,494 INFO L231 Difference]: Finished difference. Result has 266 places, 177 transitions, 1398 flow [2024-06-20 16:45:34,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1295, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1398, PETRI_PLACES=266, PETRI_TRANSITIONS=177} [2024-06-20 16:45:34,494 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 236 predicate places. [2024-06-20 16:45:34,494 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 177 transitions, 1398 flow [2024-06-20 16:45:34,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:45:34,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:45:34,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:45:34,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-20 16:45:34,495 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)] === [2024-06-20 16:45:34,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:45:34,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1154591888, now seen corresponding path program 28 times [2024-06-20 16:45:34,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:45:34,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819704150] [2024-06-20 16:45:34,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:45:34,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:45:34,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:45:36,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:45:36,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:45:36,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819704150] [2024-06-20 16:45:36,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819704150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:45:36,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:45:36,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:45:36,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187257673] [2024-06-20 16:45:36,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:45:36,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:45:36,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:45:36,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:45:36,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:45:36,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:45:36,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 177 transitions, 1398 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:45:36,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:45:36,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:45:36,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:45:36,754 INFO L124 PetriNetUnfolderBase]: 426/942 cut-off events. [2024-06-20 16:45:36,755 INFO L125 PetriNetUnfolderBase]: For 107181/107181 co-relation queries the response was YES. [2024-06-20 16:45:36,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5133 conditions, 942 events. 426/942 cut-off events. For 107181/107181 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5570 event pairs, 99 based on Foata normal form. 6/947 useless extension candidates. Maximal degree in co-relation 5028. Up to 579 conditions per place. [2024-06-20 16:45:36,762 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 127 selfloop transitions, 57 changer transitions 9/196 dead transitions. [2024-06-20 16:45:36,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 196 transitions, 2068 flow [2024-06-20 16:45:36,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:45:36,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:45:36,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-20 16:45:36,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40860215053763443 [2024-06-20 16:45:36,763 INFO L175 Difference]: Start difference. First operand has 266 places, 177 transitions, 1398 flow. Second operand 12 states and 152 transitions. [2024-06-20 16:45:36,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 196 transitions, 2068 flow [2024-06-20 16:45:36,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 196 transitions, 1944 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-20 16:45:36,998 INFO L231 Difference]: Finished difference. Result has 263 places, 174 transitions, 1378 flow [2024-06-20 16:45:36,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1278, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1378, PETRI_PLACES=263, PETRI_TRANSITIONS=174} [2024-06-20 16:45:36,998 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 233 predicate places. [2024-06-20 16:45:36,999 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 174 transitions, 1378 flow [2024-06-20 16:45:36,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:45:36,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:45:36,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:45:36,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-20 16:45:36,999 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)] === [2024-06-20 16:45:37,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:45:37,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1154303588, now seen corresponding path program 29 times [2024-06-20 16:45:37,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:45:37,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79952472] [2024-06-20 16:45:37,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:45:37,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:45:37,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:45:38,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:45:38,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:45:38,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79952472] [2024-06-20 16:45:38,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79952472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:45:38,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:45:38,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:45:38,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670877204] [2024-06-20 16:45:38,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:45:38,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:45:38,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:45:38,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:45:38,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:45:39,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:45:39,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 174 transitions, 1378 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:45:39,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:45:39,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:45:39,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:45:39,424 INFO L124 PetriNetUnfolderBase]: 401/887 cut-off events. [2024-06-20 16:45:39,424 INFO L125 PetriNetUnfolderBase]: For 81605/81605 co-relation queries the response was YES. [2024-06-20 16:45:39,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4349 conditions, 887 events. 401/887 cut-off events. For 81605/81605 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5201 event pairs, 87 based on Foata normal form. 6/892 useless extension candidates. Maximal degree in co-relation 4245. Up to 558 conditions per place. [2024-06-20 16:45:39,432 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 118 selfloop transitions, 56 changer transitions 12/189 dead transitions. [2024-06-20 16:45:39,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 189 transitions, 1812 flow [2024-06-20 16:45:39,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:45:39,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:45:39,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-20 16:45:39,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3951612903225806 [2024-06-20 16:45:39,433 INFO L175 Difference]: Start difference. First operand has 263 places, 174 transitions, 1378 flow. Second operand 12 states and 147 transitions. [2024-06-20 16:45:39,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 189 transitions, 1812 flow [2024-06-20 16:45:39,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 189 transitions, 1693 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-20 16:45:39,611 INFO L231 Difference]: Finished difference. Result has 260 places, 170 transitions, 1352 flow [2024-06-20 16:45:39,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1259, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1352, PETRI_PLACES=260, PETRI_TRANSITIONS=170} [2024-06-20 16:45:39,611 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 230 predicate places. [2024-06-20 16:45:39,611 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 170 transitions, 1352 flow [2024-06-20 16:45:39,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:45:39,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:45:39,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:45:39,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-20 16:45:39,612 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)] === [2024-06-20 16:45:39,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:45:39,612 INFO L85 PathProgramCache]: Analyzing trace with hash -922694698, now seen corresponding path program 30 times [2024-06-20 16:45:39,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:45:39,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498421610] [2024-06-20 16:45:39,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:45:39,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:45:39,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:45:41,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:45:41,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:45:41,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498421610] [2024-06-20 16:45:41,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498421610] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:45:41,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:45:41,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:45:41,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788669253] [2024-06-20 16:45:41,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:45:41,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:45:41,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:45:41,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:45:41,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:45:41,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:45:41,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 170 transitions, 1352 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:45:41,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:45:41,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:45:41,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:45:41,687 INFO L124 PetriNetUnfolderBase]: 408/904 cut-off events. [2024-06-20 16:45:41,687 INFO L125 PetriNetUnfolderBase]: For 99941/99941 co-relation queries the response was YES. [2024-06-20 16:45:41,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4892 conditions, 904 events. 408/904 cut-off events. For 99941/99941 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 5276 event pairs, 116 based on Foata normal form. 6/909 useless extension candidates. Maximal degree in co-relation 4790. Up to 647 conditions per place. [2024-06-20 16:45:41,694 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 154 selfloop transitions, 22 changer transitions 12/191 dead transitions. [2024-06-20 16:45:41,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 191 transitions, 1988 flow [2024-06-20 16:45:41,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-20 16:45:41,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-20 16:45:41,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 154 transitions. [2024-06-20 16:45:41,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38213399503722084 [2024-06-20 16:45:41,695 INFO L175 Difference]: Start difference. First operand has 260 places, 170 transitions, 1352 flow. Second operand 13 states and 154 transitions. [2024-06-20 16:45:41,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 191 transitions, 1988 flow [2024-06-20 16:45:41,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 191 transitions, 1868 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-20 16:45:41,876 INFO L231 Difference]: Finished difference. Result has 256 places, 166 transitions, 1261 flow [2024-06-20 16:45:41,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1236, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1261, PETRI_PLACES=256, PETRI_TRANSITIONS=166} [2024-06-20 16:45:41,876 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 226 predicate places. [2024-06-20 16:45:41,876 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 166 transitions, 1261 flow [2024-06-20 16:45:41,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:45:41,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:45:41,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:45:41,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-20 16:45:41,876 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)] === [2024-06-20 16:45:41,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:45:41,877 INFO L85 PathProgramCache]: Analyzing trace with hash -64878766, now seen corresponding path program 31 times [2024-06-20 16:45:41,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:45:41,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984642519] [2024-06-20 16:45:41,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:45:41,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:45:41,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:45:43,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:45:43,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:45:43,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984642519] [2024-06-20 16:45:43,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984642519] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:45:43,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:45:43,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:45:43,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487762327] [2024-06-20 16:45:43,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:45:43,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:45:43,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:45:43,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:45:43,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:45:43,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:45:43,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 166 transitions, 1261 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:45:43,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:45:43,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:45:43,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:45:44,179 INFO L124 PetriNetUnfolderBase]: 413/919 cut-off events. [2024-06-20 16:45:44,179 INFO L125 PetriNetUnfolderBase]: For 119233/119233 co-relation queries the response was YES. [2024-06-20 16:45:44,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5430 conditions, 919 events. 413/919 cut-off events. For 119233/119233 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 5396 event pairs, 127 based on Foata normal form. 6/924 useless extension candidates. Maximal degree in co-relation 5329. Up to 751 conditions per place. [2024-06-20 16:45:44,187 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 159 selfloop transitions, 17 changer transitions 7/186 dead transitions. [2024-06-20 16:45:44,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 186 transitions, 1916 flow [2024-06-20 16:45:44,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:45:44,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:45:44,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-20 16:45:44,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-20 16:45:44,188 INFO L175 Difference]: Start difference. First operand has 256 places, 166 transitions, 1261 flow. Second operand 12 states and 140 transitions. [2024-06-20 16:45:44,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 186 transitions, 1916 flow [2024-06-20 16:45:44,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 186 transitions, 1863 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-20 16:45:44,472 INFO L231 Difference]: Finished difference. Result has 251 places, 164 transitions, 1237 flow [2024-06-20 16:45:44,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1216, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1237, PETRI_PLACES=251, PETRI_TRANSITIONS=164} [2024-06-20 16:45:44,472 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 221 predicate places. [2024-06-20 16:45:44,472 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 164 transitions, 1237 flow [2024-06-20 16:45:44,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:45:44,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:45:44,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:45:44,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-20 16:45:44,473 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)] === [2024-06-20 16:45:44,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:45:44,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1968838168, now seen corresponding path program 32 times [2024-06-20 16:45:44,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:45:44,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801055568] [2024-06-20 16:45:44,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:45:44,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:45:44,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:45:45,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:45:45,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:45:45,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801055568] [2024-06-20 16:45:45,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801055568] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:45:45,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:45:45,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:45:45,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501605389] [2024-06-20 16:45:45,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:45:45,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:45:45,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:45:45,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:45:45,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:45:46,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:45:46,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 164 transitions, 1237 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:45:46,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:45:46,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:45:46,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:45:46,578 INFO L124 PetriNetUnfolderBase]: 421/943 cut-off events. [2024-06-20 16:45:46,578 INFO L125 PetriNetUnfolderBase]: For 132907/132907 co-relation queries the response was YES. [2024-06-20 16:45:46,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5978 conditions, 943 events. 421/943 cut-off events. For 132907/132907 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5596 event pairs, 138 based on Foata normal form. 6/948 useless extension candidates. Maximal degree in co-relation 5879. Up to 717 conditions per place. [2024-06-20 16:45:46,585 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 155 selfloop transitions, 17 changer transitions 9/184 dead transitions. [2024-06-20 16:45:46,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 184 transitions, 1879 flow [2024-06-20 16:45:46,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:45:46,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:45:46,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-20 16:45:46,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3844086021505376 [2024-06-20 16:45:46,586 INFO L175 Difference]: Start difference. First operand has 251 places, 164 transitions, 1237 flow. Second operand 12 states and 143 transitions. [2024-06-20 16:45:46,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 184 transitions, 1879 flow [2024-06-20 16:45:46,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 184 transitions, 1837 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-20 16:45:46,886 INFO L231 Difference]: Finished difference. Result has 249 places, 161 transitions, 1214 flow [2024-06-20 16:45:46,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1197, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1214, PETRI_PLACES=249, PETRI_TRANSITIONS=161} [2024-06-20 16:45:46,887 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 219 predicate places. [2024-06-20 16:45:46,887 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 161 transitions, 1214 flow [2024-06-20 16:45:46,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:45:46,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:45:46,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:45:46,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-20 16:45:46,887 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)] === [2024-06-20 16:45:46,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:45:46,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1923529642, now seen corresponding path program 33 times [2024-06-20 16:45:46,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:45:46,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069871416] [2024-06-20 16:45:46,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:45:46,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:45:46,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:45:48,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:45:48,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:45:48,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069871416] [2024-06-20 16:45:48,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069871416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:45:48,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:45:48,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:45:48,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789632593] [2024-06-20 16:45:48,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:45:48,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:45:48,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:45:48,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:45:48,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:45:48,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:45:48,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 161 transitions, 1214 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:45:48,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:45:48,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:45:48,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:45:49,331 INFO L124 PetriNetUnfolderBase]: 393/883 cut-off events. [2024-06-20 16:45:49,331 INFO L125 PetriNetUnfolderBase]: For 112688/112688 co-relation queries the response was YES. [2024-06-20 16:45:49,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5058 conditions, 883 events. 393/883 cut-off events. For 112688/112688 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5162 event pairs, 130 based on Foata normal form. 8/890 useless extension candidates. Maximal degree in co-relation 4961. Up to 766 conditions per place. [2024-06-20 16:45:49,338 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 149 selfloop transitions, 15 changer transitions 9/176 dead transitions. [2024-06-20 16:45:49,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 176 transitions, 1630 flow [2024-06-20 16:45:49,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:45:49,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:45:49,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-20 16:45:49,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-20 16:45:49,339 INFO L175 Difference]: Start difference. First operand has 249 places, 161 transitions, 1214 flow. Second operand 12 states and 135 transitions. [2024-06-20 16:45:49,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 176 transitions, 1630 flow [2024-06-20 16:45:49,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 176 transitions, 1595 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-20 16:45:49,583 INFO L231 Difference]: Finished difference. Result has 248 places, 158 transitions, 1189 flow [2024-06-20 16:45:49,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1179, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1189, PETRI_PLACES=248, PETRI_TRANSITIONS=158} [2024-06-20 16:45:49,583 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 218 predicate places. [2024-06-20 16:45:49,583 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 158 transitions, 1189 flow [2024-06-20 16:45:49,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:45:49,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:45:49,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:45:49,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-20 16:45:49,584 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)] === [2024-06-20 16:45:49,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:45:49,584 INFO L85 PathProgramCache]: Analyzing trace with hash -2086098774, now seen corresponding path program 34 times [2024-06-20 16:45:49,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:45:49,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441166912] [2024-06-20 16:45:49,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:45:49,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:45:49,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:45:51,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:45:51,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:45:51,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441166912] [2024-06-20 16:45:51,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441166912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:45:51,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:45:51,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:45:51,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191590773] [2024-06-20 16:45:51,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:45:51,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:45:51,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:45:51,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:45:51,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:45:51,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:45:51,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 158 transitions, 1189 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:45:51,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:45:51,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:45:51,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:45:52,083 INFO L124 PetriNetUnfolderBase]: 384/872 cut-off events. [2024-06-20 16:45:52,083 INFO L125 PetriNetUnfolderBase]: For 101370/101370 co-relation queries the response was YES. [2024-06-20 16:45:52,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4967 conditions, 872 events. 384/872 cut-off events. For 101370/101370 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5115 event pairs, 126 based on Foata normal form. 6/877 useless extension candidates. Maximal degree in co-relation 4871. Up to 741 conditions per place. [2024-06-20 16:45:52,088 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 145 selfloop transitions, 16 changer transitions 10/174 dead transitions. [2024-06-20 16:45:52,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 174 transitions, 1595 flow [2024-06-20 16:45:52,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-20 16:45:52,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-20 16:45:52,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 146 transitions. [2024-06-20 16:45:52,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36228287841191065 [2024-06-20 16:45:52,089 INFO L175 Difference]: Start difference. First operand has 248 places, 158 transitions, 1189 flow. Second operand 13 states and 146 transitions. [2024-06-20 16:45:52,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 174 transitions, 1595 flow [2024-06-20 16:45:52,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 174 transitions, 1561 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-20 16:45:52,337 INFO L231 Difference]: Finished difference. Result has 246 places, 155 transitions, 1170 flow [2024-06-20 16:45:52,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1155, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1170, PETRI_PLACES=246, PETRI_TRANSITIONS=155} [2024-06-20 16:45:52,337 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 216 predicate places. [2024-06-20 16:45:52,337 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 155 transitions, 1170 flow [2024-06-20 16:45:52,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:45:52,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:45:52,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:45:52,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-20 16:45:52,338 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)] === [2024-06-20 16:45:52,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:45:52,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1264993288, now seen corresponding path program 35 times [2024-06-20 16:45:52,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:45:52,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899529962] [2024-06-20 16:45:52,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:45:52,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:45:52,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:45:53,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:45:53,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:45:53,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899529962] [2024-06-20 16:45:53,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899529962] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:45:53,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:45:53,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:45:53,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274398601] [2024-06-20 16:45:53,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:45:53,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:45:53,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:45:53,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:45:53,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:45:53,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:45:53,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 155 transitions, 1170 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:45:53,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:45:53,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:45:53,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:45:54,296 INFO L124 PetriNetUnfolderBase]: 362/820 cut-off events. [2024-06-20 16:45:54,296 INFO L125 PetriNetUnfolderBase]: For 80796/80796 co-relation queries the response was YES. [2024-06-20 16:45:54,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4240 conditions, 820 events. 362/820 cut-off events. For 80796/80796 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4765 event pairs, 111 based on Foata normal form. 6/825 useless extension candidates. Maximal degree in co-relation 4145. Up to 690 conditions per place. [2024-06-20 16:45:54,303 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 142 selfloop transitions, 13 changer transitions 14/172 dead transitions. [2024-06-20 16:45:54,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 172 transitions, 1574 flow [2024-06-20 16:45:54,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-20 16:45:54,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-20 16:45:54,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 146 transitions. [2024-06-20 16:45:54,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36228287841191065 [2024-06-20 16:45:54,303 INFO L175 Difference]: Start difference. First operand has 246 places, 155 transitions, 1170 flow. Second operand 13 states and 146 transitions. [2024-06-20 16:45:54,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 172 transitions, 1574 flow [2024-06-20 16:45:54,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 172 transitions, 1534 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-06-20 16:45:54,493 INFO L231 Difference]: Finished difference. Result has 242 places, 150 transitions, 1130 flow [2024-06-20 16:45:54,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1130, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1130, PETRI_PLACES=242, PETRI_TRANSITIONS=150} [2024-06-20 16:45:54,493 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 212 predicate places. [2024-06-20 16:45:54,493 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 150 transitions, 1130 flow [2024-06-20 16:45:54,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:45:54,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:45:54,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:45:54,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-20 16:45:54,493 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)] === [2024-06-20 16:45:54,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:45:54,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1894944170, now seen corresponding path program 36 times [2024-06-20 16:45:54,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:45:54,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114023253] [2024-06-20 16:45:54,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:45:54,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:45:54,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:45:56,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:45:56,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:45:56,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114023253] [2024-06-20 16:45:56,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114023253] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:45:56,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:45:56,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:45:56,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146772136] [2024-06-20 16:45:56,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:45:56,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:45:56,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:45:56,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:45:56,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:45:56,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:45:56,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 150 transitions, 1130 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:45:56,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:45:56,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:45:56,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:45:57,243 INFO L124 PetriNetUnfolderBase]: 335/761 cut-off events. [2024-06-20 16:45:57,243 INFO L125 PetriNetUnfolderBase]: For 59014/59014 co-relation queries the response was YES. [2024-06-20 16:45:57,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3485 conditions, 761 events. 335/761 cut-off events. For 59014/59014 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4322 event pairs, 98 based on Foata normal form. 6/766 useless extension candidates. Maximal degree in co-relation 3391. Up to 647 conditions per place. [2024-06-20 16:45:57,249 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 138 selfloop transitions, 11 changer transitions 12/164 dead transitions. [2024-06-20 16:45:57,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 164 transitions, 1482 flow [2024-06-20 16:45:57,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:45:57,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:45:57,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-20 16:45:57,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3575268817204301 [2024-06-20 16:45:57,250 INFO L175 Difference]: Start difference. First operand has 242 places, 150 transitions, 1130 flow. Second operand 12 states and 133 transitions. [2024-06-20 16:45:57,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 164 transitions, 1482 flow [2024-06-20 16:45:57,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 164 transitions, 1442 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-20 16:45:57,372 INFO L231 Difference]: Finished difference. Result has 234 places, 145 transitions, 1062 flow [2024-06-20 16:45:57,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1090, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1062, PETRI_PLACES=234, PETRI_TRANSITIONS=145} [2024-06-20 16:45:57,372 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 204 predicate places. [2024-06-20 16:45:57,372 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 145 transitions, 1062 flow [2024-06-20 16:45:57,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:45:57,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:45:57,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:45:57,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-20 16:45:57,373 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)] === [2024-06-20 16:45:57,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:45:57,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1908996737, now seen corresponding path program 1 times [2024-06-20 16:45:57,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:45:57,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124359583] [2024-06-20 16:45:57,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:45:57,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:45:57,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:45:58,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:45:58,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:45:58,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124359583] [2024-06-20 16:45:58,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124359583] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:45:58,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:45:58,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:45:58,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470577036] [2024-06-20 16:45:58,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:45:58,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:45:58,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:45:58,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:45:58,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:45:58,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:45:58,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 145 transitions, 1062 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:45:58,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:45:58,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:45:58,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:45:59,303 INFO L124 PetriNetUnfolderBase]: 327/741 cut-off events. [2024-06-20 16:45:59,304 INFO L125 PetriNetUnfolderBase]: For 56137/56137 co-relation queries the response was YES. [2024-06-20 16:45:59,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3322 conditions, 741 events. 327/741 cut-off events. For 56137/56137 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4182 event pairs, 48 based on Foata normal form. 6/746 useless extension candidates. Maximal degree in co-relation 3231. Up to 486 conditions per place. [2024-06-20 16:45:59,309 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 113 selfloop transitions, 13 changer transitions 38/167 dead transitions. [2024-06-20 16:45:59,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 167 transitions, 1448 flow [2024-06-20 16:45:59,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:45:59,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:45:59,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-20 16:45:59,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-20 16:45:59,309 INFO L175 Difference]: Start difference. First operand has 234 places, 145 transitions, 1062 flow. Second operand 11 states and 133 transitions. [2024-06-20 16:45:59,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 167 transitions, 1448 flow [2024-06-20 16:45:59,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 167 transitions, 1365 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-20 16:45:59,416 INFO L231 Difference]: Finished difference. Result has 223 places, 122 transitions, 858 flow [2024-06-20 16:45:59,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=981, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=858, PETRI_PLACES=223, PETRI_TRANSITIONS=122} [2024-06-20 16:45:59,417 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 193 predicate places. [2024-06-20 16:45:59,417 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 122 transitions, 858 flow [2024-06-20 16:45:59,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:45:59,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:45:59,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:45:59,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-20 16:45:59,417 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)] === [2024-06-20 16:45:59,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:45:59,417 INFO L85 PathProgramCache]: Analyzing trace with hash -836232887, now seen corresponding path program 2 times [2024-06-20 16:45:59,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:45:59,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986970714] [2024-06-20 16:45:59,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:45:59,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:45:59,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:46:01,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:46:01,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:46:01,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986970714] [2024-06-20 16:46:01,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986970714] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:46:01,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:46:01,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:46:01,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026170755] [2024-06-20 16:46:01,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:46:01,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:46:01,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:46:01,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:46:01,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:46:01,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:46:01,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 122 transitions, 858 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:46:01,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:46:01,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:46:01,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:46:01,529 INFO L124 PetriNetUnfolderBase]: 251/575 cut-off events. [2024-06-20 16:46:01,529 INFO L125 PetriNetUnfolderBase]: For 51756/51758 co-relation queries the response was YES. [2024-06-20 16:46:01,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2686 conditions, 575 events. 251/575 cut-off events. For 51756/51758 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2986 event pairs, 40 based on Foata normal form. 8/582 useless extension candidates. Maximal degree in co-relation 2600. Up to 440 conditions per place. [2024-06-20 16:46:01,533 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 103 selfloop transitions, 16 changer transitions 18/140 dead transitions. [2024-06-20 16:46:01,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 140 transitions, 1176 flow [2024-06-20 16:46:01,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:46:01,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:46:01,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-20 16:46:01,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3602150537634409 [2024-06-20 16:46:01,534 INFO L175 Difference]: Start difference. First operand has 223 places, 122 transitions, 858 flow. Second operand 12 states and 134 transitions. [2024-06-20 16:46:01,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 140 transitions, 1176 flow [2024-06-20 16:46:01,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 140 transitions, 1112 flow, removed 9 selfloop flow, removed 18 redundant places. [2024-06-20 16:46:01,599 INFO L231 Difference]: Finished difference. Result has 194 places, 114 transitions, 776 flow [2024-06-20 16:46:01,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=794, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=776, PETRI_PLACES=194, PETRI_TRANSITIONS=114} [2024-06-20 16:46:01,600 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 164 predicate places. [2024-06-20 16:46:01,600 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 114 transitions, 776 flow [2024-06-20 16:46:01,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:46:01,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:46:01,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:46:01,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-20 16:46:01,601 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)] === [2024-06-20 16:46:01,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:46:01,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1616612241, now seen corresponding path program 3 times [2024-06-20 16:46:01,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:46:01,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981631012] [2024-06-20 16:46:01,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:46:01,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:46:01,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:46:04,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:46:04,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:46:04,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981631012] [2024-06-20 16:46:04,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981631012] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:46:04,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:46:04,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:46:04,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429911047] [2024-06-20 16:46:04,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:46:04,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:46:04,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:46:04,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:46:04,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:46:04,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:46:04,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 114 transitions, 776 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:46:04,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:46:04,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:46:04,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:46:04,736 INFO L124 PetriNetUnfolderBase]: 232/532 cut-off events. [2024-06-20 16:46:04,736 INFO L125 PetriNetUnfolderBase]: For 41393/41395 co-relation queries the response was YES. [2024-06-20 16:46:04,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2449 conditions, 532 events. 232/532 cut-off events. For 41393/41395 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2677 event pairs, 38 based on Foata normal form. 6/537 useless extension candidates. Maximal degree in co-relation 2371. Up to 409 conditions per place. [2024-06-20 16:46:04,739 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 93 selfloop transitions, 7 changer transitions 29/132 dead transitions. [2024-06-20 16:46:04,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 132 transitions, 1078 flow [2024-06-20 16:46:04,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:46:04,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:46:04,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-20 16:46:04,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3575268817204301 [2024-06-20 16:46:04,740 INFO L175 Difference]: Start difference. First operand has 194 places, 114 transitions, 776 flow. Second operand 12 states and 133 transitions. [2024-06-20 16:46:04,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 132 transitions, 1078 flow [2024-06-20 16:46:04,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 132 transitions, 1040 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-20 16:46:04,787 INFO L231 Difference]: Finished difference. Result has 188 places, 99 transitions, 634 flow [2024-06-20 16:46:04,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=738, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=634, PETRI_PLACES=188, PETRI_TRANSITIONS=99} [2024-06-20 16:46:04,788 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 158 predicate places. [2024-06-20 16:46:04,788 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 99 transitions, 634 flow [2024-06-20 16:46:04,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:46:04,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:46:04,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:46:04,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-20 16:46:04,788 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)] === [2024-06-20 16:46:04,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:46:04,789 INFO L85 PathProgramCache]: Analyzing trace with hash -339935113, now seen corresponding path program 4 times [2024-06-20 16:46:04,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:46:04,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439266161] [2024-06-20 16:46:04,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:46:04,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:46:04,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:46:06,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:46:06,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:46:06,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439266161] [2024-06-20 16:46:06,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439266161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:46:06,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:46:06,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:46:06,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973288198] [2024-06-20 16:46:06,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:46:06,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:46:06,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:46:06,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:46:06,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:46:06,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:46:06,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 99 transitions, 634 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:46:06,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:46:06,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:46:06,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:46:07,135 INFO L124 PetriNetUnfolderBase]: 207/473 cut-off events. [2024-06-20 16:46:07,135 INFO L125 PetriNetUnfolderBase]: For 38896/38898 co-relation queries the response was YES. [2024-06-20 16:46:07,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2183 conditions, 473 events. 207/473 cut-off events. For 38896/38898 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2300 event pairs, 36 based on Foata normal form. 8/480 useless extension candidates. Maximal degree in co-relation 2107. Up to 356 conditions per place. [2024-06-20 16:46:07,138 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 82 selfloop transitions, 14 changer transitions 16/115 dead transitions. [2024-06-20 16:46:07,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 115 transitions, 896 flow [2024-06-20 16:46:07,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:46:07,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:46:07,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-20 16:46:07,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-20 16:46:07,139 INFO L175 Difference]: Start difference. First operand has 188 places, 99 transitions, 634 flow. Second operand 12 states and 132 transitions. [2024-06-20 16:46:07,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 115 transitions, 896 flow [2024-06-20 16:46:07,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 115 transitions, 858 flow, removed 8 selfloop flow, removed 15 redundant places. [2024-06-20 16:46:07,186 INFO L231 Difference]: Finished difference. Result has 168 places, 92 transitions, 587 flow [2024-06-20 16:46:07,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=596, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=587, PETRI_PLACES=168, PETRI_TRANSITIONS=92} [2024-06-20 16:46:07,186 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 138 predicate places. [2024-06-20 16:46:07,186 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 92 transitions, 587 flow [2024-06-20 16:46:07,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:46:07,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:46:07,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:46:07,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-20 16:46:07,187 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)] === [2024-06-20 16:46:07,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:46:07,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1458093061, now seen corresponding path program 5 times [2024-06-20 16:46:07,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:46:07,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631740569] [2024-06-20 16:46:07,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:46:07,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:46:07,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:46:08,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:46:08,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:46:08,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631740569] [2024-06-20 16:46:08,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631740569] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:46:08,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:46:08,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:46:08,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608800401] [2024-06-20 16:46:08,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:46:08,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:46:08,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:46:08,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:46:08,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:46:09,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:46:09,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 92 transitions, 587 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:46:09,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:46:09,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:46:09,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:46:09,451 INFO L124 PetriNetUnfolderBase]: 192/442 cut-off events. [2024-06-20 16:46:09,451 INFO L125 PetriNetUnfolderBase]: For 32119/32121 co-relation queries the response was YES. [2024-06-20 16:46:09,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2020 conditions, 442 events. 192/442 cut-off events. For 32119/32121 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2109 event pairs, 34 based on Foata normal form. 8/449 useless extension candidates. Maximal degree in co-relation 1953. Up to 336 conditions per place. [2024-06-20 16:46:09,454 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 77 selfloop transitions, 9 changer transitions 19/108 dead transitions. [2024-06-20 16:46:09,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 108 transitions, 835 flow [2024-06-20 16:46:09,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:46:09,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:46:09,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-20 16:46:09,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34946236559139787 [2024-06-20 16:46:09,454 INFO L175 Difference]: Start difference. First operand has 168 places, 92 transitions, 587 flow. Second operand 12 states and 130 transitions. [2024-06-20 16:46:09,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 108 transitions, 835 flow [2024-06-20 16:46:09,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 108 transitions, 776 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-20 16:46:09,497 INFO L231 Difference]: Finished difference. Result has 160 places, 84 transitions, 508 flow [2024-06-20 16:46:09,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=508, PETRI_PLACES=160, PETRI_TRANSITIONS=84} [2024-06-20 16:46:09,497 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 130 predicate places. [2024-06-20 16:46:09,497 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 84 transitions, 508 flow [2024-06-20 16:46:09,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:46:09,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:46:09,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:46:09,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-20 16:46:09,497 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)] === [2024-06-20 16:46:09,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:46:09,498 INFO L85 PathProgramCache]: Analyzing trace with hash -280908539, now seen corresponding path program 6 times [2024-06-20 16:46:09,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:46:09,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918773677] [2024-06-20 16:46:09,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:46:09,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:46:09,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:46:11,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:46:11,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:46:11,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918773677] [2024-06-20 16:46:11,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918773677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:46:11,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:46:11,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:46:11,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376024722] [2024-06-20 16:46:11,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:46:11,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:46:11,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:46:11,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:46:11,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:46:11,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:46:11,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 84 transitions, 508 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:46:11,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:46:11,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:46:11,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:46:11,908 INFO L124 PetriNetUnfolderBase]: 174/400 cut-off events. [2024-06-20 16:46:11,909 INFO L125 PetriNetUnfolderBase]: For 28941/28945 co-relation queries the response was YES. [2024-06-20 16:46:11,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1833 conditions, 400 events. 174/400 cut-off events. For 28941/28945 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1822 event pairs, 34 based on Foata normal form. 10/409 useless extension candidates. Maximal degree in co-relation 1769. Up to 306 conditions per place. [2024-06-20 16:46:11,910 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 73 selfloop transitions, 13 changer transitions 10/99 dead transitions. [2024-06-20 16:46:11,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 99 transitions, 736 flow [2024-06-20 16:46:11,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:46:11,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:46:11,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-20 16:46:11,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3467741935483871 [2024-06-20 16:46:11,911 INFO L175 Difference]: Start difference. First operand has 160 places, 84 transitions, 508 flow. Second operand 12 states and 129 transitions. [2024-06-20 16:46:11,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 99 transitions, 736 flow [2024-06-20 16:46:11,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 99 transitions, 704 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-20 16:46:11,943 INFO L231 Difference]: Finished difference. Result has 150 places, 81 transitions, 491 flow [2024-06-20 16:46:11,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=491, PETRI_PLACES=150, PETRI_TRANSITIONS=81} [2024-06-20 16:46:11,943 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 120 predicate places. [2024-06-20 16:46:11,943 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 81 transitions, 491 flow [2024-06-20 16:46:11,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:46:11,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:46:11,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:46:11,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-20 16:46:11,944 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)] === [2024-06-20 16:46:11,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:46:11,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1448506251, now seen corresponding path program 7 times [2024-06-20 16:46:11,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:46:11,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379283495] [2024-06-20 16:46:11,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:46:11,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:46:11,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:46:14,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:46:14,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:46:14,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379283495] [2024-06-20 16:46:14,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379283495] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:46:14,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:46:14,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:46:14,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805821217] [2024-06-20 16:46:14,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:46:14,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:46:14,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:46:14,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:46:14,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:46:14,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:46:14,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 81 transitions, 491 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:46:14,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:46:14,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:46:14,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:46:15,027 INFO L124 PetriNetUnfolderBase]: 167/387 cut-off events. [2024-06-20 16:46:15,027 INFO L125 PetriNetUnfolderBase]: For 25015/25015 co-relation queries the response was YES. [2024-06-20 16:46:15,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1751 conditions, 387 events. 167/387 cut-off events. For 25015/25015 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1743 event pairs, 32 based on Foata normal form. 6/392 useless extension candidates. Maximal degree in co-relation 1691. Up to 288 conditions per place. [2024-06-20 16:46:15,029 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 63 selfloop transitions, 3 changer transitions 28/97 dead transitions. [2024-06-20 16:46:15,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 97 transitions, 717 flow [2024-06-20 16:46:15,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:46:15,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:46:15,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-20 16:46:15,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3467741935483871 [2024-06-20 16:46:15,030 INFO L175 Difference]: Start difference. First operand has 150 places, 81 transitions, 491 flow. Second operand 12 states and 129 transitions. [2024-06-20 16:46:15,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 97 transitions, 717 flow [2024-06-20 16:46:15,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 97 transitions, 685 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-20 16:46:15,060 INFO L231 Difference]: Finished difference. Result has 146 places, 68 transitions, 390 flow [2024-06-20 16:46:15,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=390, PETRI_PLACES=146, PETRI_TRANSITIONS=68} [2024-06-20 16:46:15,060 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 116 predicate places. [2024-06-20 16:46:15,060 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 68 transitions, 390 flow [2024-06-20 16:46:15,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:46:15,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:46:15,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:46:15,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-20 16:46:15,061 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)] === [2024-06-20 16:46:15,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:46:15,061 INFO L85 PathProgramCache]: Analyzing trace with hash -2082761173, now seen corresponding path program 8 times [2024-06-20 16:46:15,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:46:15,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498471726] [2024-06-20 16:46:15,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:46:15,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:46:15,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:46:16,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:46:16,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:46:16,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498471726] [2024-06-20 16:46:16,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498471726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:46:16,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:46:16,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:46:16,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947081701] [2024-06-20 16:46:16,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:46:16,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:46:16,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:46:16,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:46:16,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:46:17,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:46:17,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 68 transitions, 390 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:46:17,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:46:17,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:46:17,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:46:17,239 INFO L124 PetriNetUnfolderBase]: 145/332 cut-off events. [2024-06-20 16:46:17,239 INFO L125 PetriNetUnfolderBase]: For 23055/23055 co-relation queries the response was YES. [2024-06-20 16:46:17,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1535 conditions, 332 events. 145/332 cut-off events. For 23055/23055 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1434 event pairs, 32 based on Foata normal form. 6/338 useless extension candidates. Maximal degree in co-relation 1477. Up to 254 conditions per place. [2024-06-20 16:46:17,241 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 56 selfloop transitions, 11 changer transitions 11/81 dead transitions. [2024-06-20 16:46:17,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 81 transitions, 576 flow [2024-06-20 16:46:17,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:46:17,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:46:17,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-20 16:46:17,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-20 16:46:17,242 INFO L175 Difference]: Start difference. First operand has 146 places, 68 transitions, 390 flow. Second operand 12 states and 128 transitions. [2024-06-20 16:46:17,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 81 transitions, 576 flow [2024-06-20 16:46:17,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 81 transitions, 546 flow, removed 9 selfloop flow, removed 15 redundant places. [2024-06-20 16:46:17,262 INFO L231 Difference]: Finished difference. Result has 123 places, 64 transitions, 366 flow [2024-06-20 16:46:17,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=366, PETRI_PLACES=123, PETRI_TRANSITIONS=64} [2024-06-20 16:46:17,263 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 93 predicate places. [2024-06-20 16:46:17,263 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 64 transitions, 366 flow [2024-06-20 16:46:17,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:46:17,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:46:17,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:46:17,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-20 16:46:17,264 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)] === [2024-06-20 16:46:17,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:46:17,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1338444217, now seen corresponding path program 9 times [2024-06-20 16:46:17,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:46:17,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262481330] [2024-06-20 16:46:17,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:46:17,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:46:17,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:46:19,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:46:19,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:46:19,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262481330] [2024-06-20 16:46:19,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262481330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:46:19,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:46:19,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:46:19,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753433453] [2024-06-20 16:46:19,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:46:19,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:46:19,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:46:19,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:46:19,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:46:19,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:46:19,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 64 transitions, 366 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:46:19,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:46:19,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:46:19,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:46:19,983 INFO L124 PetriNetUnfolderBase]: 137/314 cut-off events. [2024-06-20 16:46:19,984 INFO L125 PetriNetUnfolderBase]: For 17120/17120 co-relation queries the response was YES. [2024-06-20 16:46:19,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1405 conditions, 314 events. 137/314 cut-off events. For 17120/17120 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1325 event pairs, 32 based on Foata normal form. 6/320 useless extension candidates. Maximal degree in co-relation 1356. Up to 244 conditions per place. [2024-06-20 16:46:19,985 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 54 selfloop transitions, 10 changer transitions 10/77 dead transitions. [2024-06-20 16:46:19,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 77 transitions, 544 flow [2024-06-20 16:46:19,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:46:19,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:46:19,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-20 16:46:19,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-20 16:46:19,986 INFO L175 Difference]: Start difference. First operand has 123 places, 64 transitions, 366 flow. Second operand 12 states and 126 transitions. [2024-06-20 16:46:19,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 77 transitions, 544 flow [2024-06-20 16:46:19,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 77 transitions, 510 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-20 16:46:20,000 INFO L231 Difference]: Finished difference. Result has 117 places, 61 transitions, 343 flow [2024-06-20 16:46:20,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=343, PETRI_PLACES=117, PETRI_TRANSITIONS=61} [2024-06-20 16:46:20,000 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 87 predicate places. [2024-06-20 16:46:20,000 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 61 transitions, 343 flow [2024-06-20 16:46:20,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:46:20,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:46:20,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:46:20,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-20 16:46:20,001 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)] === [2024-06-20 16:46:20,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:46:20,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1409329765, now seen corresponding path program 10 times [2024-06-20 16:46:20,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:46:20,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750850174] [2024-06-20 16:46:20,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:46:20,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:46:20,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:46:22,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:46:22,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:46:22,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750850174] [2024-06-20 16:46:22,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750850174] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:46:22,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:46:22,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:46:22,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109535945] [2024-06-20 16:46:22,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:46:22,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:46:22,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:46:22,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:46:22,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:46:22,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:46:22,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 61 transitions, 343 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:46:22,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:46:22,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:46:22,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:46:22,645 INFO L124 PetriNetUnfolderBase]: 130/301 cut-off events. [2024-06-20 16:46:22,645 INFO L125 PetriNetUnfolderBase]: For 15082/15086 co-relation queries the response was YES. [2024-06-20 16:46:22,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1312 conditions, 301 events. 130/301 cut-off events. For 15082/15086 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1247 event pairs, 32 based on Foata normal form. 6/307 useless extension candidates. Maximal degree in co-relation 1266. Up to 171 conditions per place. [2024-06-20 16:46:22,646 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 40 selfloop transitions, 20 changer transitions 11/74 dead transitions. [2024-06-20 16:46:22,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 74 transitions, 513 flow [2024-06-20 16:46:22,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:46:22,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:46:22,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-20 16:46:22,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3467741935483871 [2024-06-20 16:46:22,647 INFO L175 Difference]: Start difference. First operand has 117 places, 61 transitions, 343 flow. Second operand 12 states and 129 transitions. [2024-06-20 16:46:22,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 74 transitions, 513 flow [2024-06-20 16:46:22,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 74 transitions, 487 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-20 16:46:22,658 INFO L231 Difference]: Finished difference. Result has 113 places, 57 transitions, 341 flow [2024-06-20 16:46:22,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=341, PETRI_PLACES=113, PETRI_TRANSITIONS=57} [2024-06-20 16:46:22,658 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 83 predicate places. [2024-06-20 16:46:22,659 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 57 transitions, 341 flow [2024-06-20 16:46:22,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:46:22,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:46:22,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:46:22,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-20 16:46:22,659 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)] === [2024-06-20 16:46:22,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:46:22,659 INFO L85 PathProgramCache]: Analyzing trace with hash -2109520243, now seen corresponding path program 11 times [2024-06-20 16:46:22,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:46:22,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235246210] [2024-06-20 16:46:22,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:46:22,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:46:22,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:46:24,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:46:24,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:46:24,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235246210] [2024-06-20 16:46:24,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235246210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:46:24,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:46:24,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:46:24,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162696034] [2024-06-20 16:46:24,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:46:24,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:46:24,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:46:24,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:46:24,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:46:25,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:46:25,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 57 transitions, 341 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:46:25,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:46:25,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:46:25,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:46:25,311 INFO L124 PetriNetUnfolderBase]: 107/250 cut-off events. [2024-06-20 16:46:25,311 INFO L125 PetriNetUnfolderBase]: For 9166/9170 co-relation queries the response was YES. [2024-06-20 16:46:25,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 952 conditions, 250 events. 107/250 cut-off events. For 9166/9170 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 975 event pairs, 19 based on Foata normal form. 10/260 useless extension candidates. Maximal degree in co-relation 908. Up to 164 conditions per place. [2024-06-20 16:46:25,312 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 43 selfloop transitions, 11 changer transitions 13/70 dead transitions. [2024-06-20 16:46:25,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 70 transitions, 503 flow [2024-06-20 16:46:25,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:46:25,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:46:25,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-20 16:46:25,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3467741935483871 [2024-06-20 16:46:25,313 INFO L175 Difference]: Start difference. First operand has 113 places, 57 transitions, 341 flow. Second operand 12 states and 129 transitions. [2024-06-20 16:46:25,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 70 transitions, 503 flow [2024-06-20 16:46:25,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 70 transitions, 455 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-20 16:46:25,321 INFO L231 Difference]: Finished difference. Result has 107 places, 52 transitions, 294 flow [2024-06-20 16:46:25,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=294, PETRI_PLACES=107, PETRI_TRANSITIONS=52} [2024-06-20 16:46:25,321 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 77 predicate places. [2024-06-20 16:46:25,321 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 52 transitions, 294 flow [2024-06-20 16:46:25,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:46:25,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:46:25,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:46:25,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-20 16:46:25,321 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)] === [2024-06-20 16:46:25,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:46:25,322 INFO L85 PathProgramCache]: Analyzing trace with hash -584521301, now seen corresponding path program 12 times [2024-06-20 16:46:25,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:46:25,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989503507] [2024-06-20 16:46:25,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:46:25,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:46:25,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:46:27,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:46:27,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:46:27,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989503507] [2024-06-20 16:46:27,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989503507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:46:27,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:46:27,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:46:27,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012713401] [2024-06-20 16:46:27,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:46:27,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:46:27,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:46:27,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:46:27,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:46:27,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:46:27,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 52 transitions, 294 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:46:27,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:46:27,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:46:27,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:46:27,934 INFO L124 PetriNetUnfolderBase]: 98/229 cut-off events. [2024-06-20 16:46:27,934 INFO L125 PetriNetUnfolderBase]: For 7772/7772 co-relation queries the response was YES. [2024-06-20 16:46:27,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 855 conditions, 229 events. 98/229 cut-off events. For 7772/7772 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 845 event pairs, 19 based on Foata normal form. 6/235 useless extension candidates. Maximal degree in co-relation 814. Up to 154 conditions per place. [2024-06-20 16:46:27,936 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 41 selfloop transitions, 11 changer transitions 10/65 dead transitions. [2024-06-20 16:46:27,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 65 transitions, 446 flow [2024-06-20 16:46:27,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:46:27,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:46:27,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-20 16:46:27,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-20 16:46:27,937 INFO L175 Difference]: Start difference. First operand has 107 places, 52 transitions, 294 flow. Second operand 12 states and 128 transitions. [2024-06-20 16:46:27,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 65 transitions, 446 flow [2024-06-20 16:46:27,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 65 transitions, 416 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-20 16:46:27,942 INFO L231 Difference]: Finished difference. Result has 99 places, 49 transitions, 275 flow [2024-06-20 16:46:27,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=275, PETRI_PLACES=99, PETRI_TRANSITIONS=49} [2024-06-20 16:46:27,943 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 69 predicate places. [2024-06-20 16:46:27,943 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 49 transitions, 275 flow [2024-06-20 16:46:27,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:46:27,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:46:27,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:46:27,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-20 16:46:27,943 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)] === [2024-06-20 16:46:27,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:46:27,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1364889247, now seen corresponding path program 13 times [2024-06-20 16:46:27,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:46:27,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515526576] [2024-06-20 16:46:27,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:46:27,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:46:27,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:46:29,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:46:29,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:46:29,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515526576] [2024-06-20 16:46:29,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515526576] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:46:29,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:46:29,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:46:29,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121247910] [2024-06-20 16:46:29,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:46:29,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:46:29,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:46:29,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:46:29,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:46:29,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:46:29,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 49 transitions, 275 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:46:29,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:46:29,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:46:29,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:46:30,182 INFO L124 PetriNetUnfolderBase]: 91/216 cut-off events. [2024-06-20 16:46:30,182 INFO L125 PetriNetUnfolderBase]: For 6532/6532 co-relation queries the response was YES. [2024-06-20 16:46:30,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 798 conditions, 216 events. 91/216 cut-off events. For 6532/6532 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 779 event pairs, 17 based on Foata normal form. 6/222 useless extension candidates. Maximal degree in co-relation 760. Up to 136 conditions per place. [2024-06-20 16:46:30,183 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 37 selfloop transitions, 7 changer transitions 16/63 dead transitions. [2024-06-20 16:46:30,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 63 transitions, 425 flow [2024-06-20 16:46:30,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:46:30,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:46:30,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-20 16:46:30,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-20 16:46:30,184 INFO L175 Difference]: Start difference. First operand has 99 places, 49 transitions, 275 flow. Second operand 12 states and 128 transitions. [2024-06-20 16:46:30,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 63 transitions, 425 flow [2024-06-20 16:46:30,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 63 transitions, 397 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-20 16:46:30,189 INFO L231 Difference]: Finished difference. Result has 95 places, 43 transitions, 237 flow [2024-06-20 16:46:30,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=237, PETRI_PLACES=95, PETRI_TRANSITIONS=43} [2024-06-20 16:46:30,189 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 65 predicate places. [2024-06-20 16:46:30,189 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 43 transitions, 237 flow [2024-06-20 16:46:30,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:46:30,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:46:30,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:46:30,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2024-06-20 16:46:30,190 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)] === [2024-06-20 16:46:30,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:46:30,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1911474325, now seen corresponding path program 14 times [2024-06-20 16:46:30,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:46:30,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780083901] [2024-06-20 16:46:30,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:46:30,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:46:30,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:46:31,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:46:31,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:46:31,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780083901] [2024-06-20 16:46:31,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780083901] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:46:31,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:46:31,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:46:31,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121494802] [2024-06-20 16:46:31,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:46:31,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:46:31,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:46:31,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:46:31,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:46:32,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:46:32,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 43 transitions, 237 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:46:32,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:46:32,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:46:32,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:46:32,371 INFO L124 PetriNetUnfolderBase]: 78/187 cut-off events. [2024-06-20 16:46:32,371 INFO L125 PetriNetUnfolderBase]: For 5754/5754 co-relation queries the response was YES. [2024-06-20 16:46:32,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 700 conditions, 187 events. 78/187 cut-off events. For 5754/5754 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 620 event pairs, 17 based on Foata normal form. 6/193 useless extension candidates. Maximal degree in co-relation 664. Up to 90 conditions per place. [2024-06-20 16:46:32,372 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 26 selfloop transitions, 17 changer transitions 10/56 dead transitions. [2024-06-20 16:46:32,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 56 transitions, 371 flow [2024-06-20 16:46:32,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:46:32,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:46:32,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-20 16:46:32,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-20 16:46:32,373 INFO L175 Difference]: Start difference. First operand has 95 places, 43 transitions, 237 flow. Second operand 12 states and 126 transitions. [2024-06-20 16:46:32,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 56 transitions, 371 flow [2024-06-20 16:46:32,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 56 transitions, 345 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-20 16:46:32,377 INFO L231 Difference]: Finished difference. Result has 85 places, 40 transitions, 234 flow [2024-06-20 16:46:32,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=234, PETRI_PLACES=85, PETRI_TRANSITIONS=40} [2024-06-20 16:46:32,377 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 55 predicate places. [2024-06-20 16:46:32,377 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 40 transitions, 234 flow [2024-06-20 16:46:32,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:46:32,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:46:32,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:46:32,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2024-06-20 16:46:32,378 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)] === [2024-06-20 16:46:32,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:46:32,378 INFO L85 PathProgramCache]: Analyzing trace with hash 392802361, now seen corresponding path program 15 times [2024-06-20 16:46:32,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:46:32,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385698657] [2024-06-20 16:46:32,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:46:32,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:46:32,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:46:34,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:46:34,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:46:34,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385698657] [2024-06-20 16:46:34,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385698657] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:46:34,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:46:34,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:46:34,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467991660] [2024-06-20 16:46:34,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:46:34,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:46:34,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:46:34,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:46:34,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:46:35,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:46:35,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 40 transitions, 234 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:46:35,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:46:35,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:46:35,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:46:35,367 INFO L124 PetriNetUnfolderBase]: 71/174 cut-off events. [2024-06-20 16:46:35,367 INFO L125 PetriNetUnfolderBase]: For 4076/4076 co-relation queries the response was YES. [2024-06-20 16:46:35,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 649 conditions, 174 events. 71/174 cut-off events. For 4076/4076 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 552 event pairs, 15 based on Foata normal form. 6/180 useless extension candidates. Maximal degree in co-relation 618. Up to 60 conditions per place. [2024-06-20 16:46:35,368 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 24 selfloop transitions, 16 changer transitions 11/54 dead transitions. [2024-06-20 16:46:35,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 54 transitions, 366 flow [2024-06-20 16:46:35,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:46:35,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:46:35,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-20 16:46:35,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34139784946236557 [2024-06-20 16:46:35,369 INFO L175 Difference]: Start difference. First operand has 85 places, 40 transitions, 234 flow. Second operand 12 states and 127 transitions. [2024-06-20 16:46:35,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 54 transitions, 366 flow [2024-06-20 16:46:35,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 54 transitions, 326 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-20 16:46:35,372 INFO L231 Difference]: Finished difference. Result has 81 places, 35 transitions, 206 flow [2024-06-20 16:46:35,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=206, PETRI_PLACES=81, PETRI_TRANSITIONS=35} [2024-06-20 16:46:35,372 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 51 predicate places. [2024-06-20 16:46:35,372 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 35 transitions, 206 flow [2024-06-20 16:46:35,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:46:35,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:46:35,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:46:35,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2024-06-20 16:46:35,372 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)] === [2024-06-20 16:46:35,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:46:35,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1237898767, now seen corresponding path program 16 times [2024-06-20 16:46:35,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:46:35,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748138017] [2024-06-20 16:46:35,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:46:35,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:46:35,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:46:37,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:46:37,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:46:37,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748138017] [2024-06-20 16:46:37,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748138017] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:46:37,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:46:37,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:46:37,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038440033] [2024-06-20 16:46:37,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:46:37,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:46:37,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:46:37,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:46:37,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:46:37,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:46:37,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 35 transitions, 206 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:46:37,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:46:37,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:46:37,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:46:37,522 INFO L124 PetriNetUnfolderBase]: 59/148 cut-off events. [2024-06-20 16:46:37,522 INFO L125 PetriNetUnfolderBase]: For 3496/3496 co-relation queries the response was YES. [2024-06-20 16:46:37,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 569 conditions, 148 events. 59/148 cut-off events. For 3496/3496 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 434 event pairs, 13 based on Foata normal form. 6/154 useless extension candidates. Maximal degree in co-relation 540. Up to 81 conditions per place. [2024-06-20 16:46:37,523 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 23 selfloop transitions, 4 changer transitions 19/49 dead transitions. [2024-06-20 16:46:37,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 49 transitions, 328 flow [2024-06-20 16:46:37,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:46:37,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:46:37,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-20 16:46:37,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33602150537634407 [2024-06-20 16:46:37,524 INFO L175 Difference]: Start difference. First operand has 81 places, 35 transitions, 206 flow. Second operand 12 states and 125 transitions. [2024-06-20 16:46:37,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 49 transitions, 328 flow [2024-06-20 16:46:37,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 49 transitions, 286 flow, removed 5 selfloop flow, removed 14 redundant places. [2024-06-20 16:46:37,526 INFO L231 Difference]: Finished difference. Result has 73 places, 28 transitions, 143 flow [2024-06-20 16:46:37,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=143, PETRI_PLACES=73, PETRI_TRANSITIONS=28} [2024-06-20 16:46:37,526 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 43 predicate places. [2024-06-20 16:46:37,526 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 28 transitions, 143 flow [2024-06-20 16:46:37,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:46:37,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:46:37,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:46:37,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2024-06-20 16:46:37,527 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)] === [2024-06-20 16:46:37,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:46:37,528 INFO L85 PathProgramCache]: Analyzing trace with hash 391837763, now seen corresponding path program 17 times [2024-06-20 16:46:37,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:46:37,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639189349] [2024-06-20 16:46:37,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:46:37,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:46:37,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:46:39,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:46:39,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:46:39,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639189349] [2024-06-20 16:46:39,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639189349] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:46:39,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:46:39,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:46:39,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599381033] [2024-06-20 16:46:39,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:46:39,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:46:39,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:46:39,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:46:39,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:46:39,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:46:39,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 28 transitions, 143 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:46:39,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:46:39,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:46:39,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:46:40,122 INFO L124 PetriNetUnfolderBase]: 45/116 cut-off events. [2024-06-20 16:46:40,122 INFO L125 PetriNetUnfolderBase]: For 2382/2382 co-relation queries the response was YES. [2024-06-20 16:46:40,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 429 conditions, 116 events. 45/116 cut-off events. For 2382/2382 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 292 event pairs, 13 based on Foata normal form. 6/122 useless extension candidates. Maximal degree in co-relation 404. Up to 44 conditions per place. [2024-06-20 16:46:40,123 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 17 selfloop transitions, 6 changer transitions 15/41 dead transitions. [2024-06-20 16:46:40,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 41 transitions, 247 flow [2024-06-20 16:46:40,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:46:40,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:46:40,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 122 transitions. [2024-06-20 16:46:40,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3279569892473118 [2024-06-20 16:46:40,124 INFO L175 Difference]: Start difference. First operand has 73 places, 28 transitions, 143 flow. Second operand 12 states and 122 transitions. [2024-06-20 16:46:40,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 41 transitions, 247 flow [2024-06-20 16:46:40,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 41 transitions, 225 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-20 16:46:40,125 INFO L231 Difference]: Finished difference. Result has 61 places, 22 transitions, 108 flow [2024-06-20 16:46:40,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=49, 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=61, PETRI_TRANSITIONS=22} [2024-06-20 16:46:40,125 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 31 predicate places. [2024-06-20 16:46:40,125 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 22 transitions, 108 flow [2024-06-20 16:46:40,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:46:40,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:46:40,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:46:40,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2024-06-20 16:46:40,126 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)] === [2024-06-20 16:46:40,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:46:40,126 INFO L85 PathProgramCache]: Analyzing trace with hash -2018864757, now seen corresponding path program 18 times [2024-06-20 16:46:40,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:46:40,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007000098] [2024-06-20 16:46:40,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:46:40,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:46:40,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:46:42,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:46:42,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:46:42,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007000098] [2024-06-20 16:46:42,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007000098] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:46:42,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:46:42,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:46:42,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506078147] [2024-06-20 16:46:42,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:46:42,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:46:42,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:46:42,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:46:42,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:46:42,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:46:42,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 22 transitions, 108 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:46:42,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:46:42,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:46:42,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:46:42,874 INFO L124 PetriNetUnfolderBase]: 20/59 cut-off events. [2024-06-20 16:46:42,874 INFO L125 PetriNetUnfolderBase]: For 598/598 co-relation queries the response was YES. [2024-06-20 16:46:42,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 59 events. 20/59 cut-off events. For 598/598 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 76 event pairs, 0 based on Foata normal form. 6/65 useless extension candidates. Maximal degree in co-relation 152. Up to 24 conditions per place. [2024-06-20 16:46:42,874 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 0 selfloop transitions, 0 changer transitions 30/30 dead transitions. [2024-06-20 16:46:42,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 30 transitions, 150 flow [2024-06-20 16:46:42,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:46:42,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:46:42,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 112 transitions. [2024-06-20 16:46:42,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3010752688172043 [2024-06-20 16:46:42,875 INFO L175 Difference]: Start difference. First operand has 61 places, 22 transitions, 108 flow. Second operand 12 states and 112 transitions. [2024-06-20 16:46:42,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 30 transitions, 150 flow [2024-06-20 16:46:42,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 30 transitions, 120 flow, removed 1 selfloop flow, removed 15 redundant places. [2024-06-20 16:46:42,876 INFO L231 Difference]: Finished difference. Result has 46 places, 0 transitions, 0 flow [2024-06-20 16:46:42,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=46, PETRI_TRANSITIONS=0} [2024-06-20 16:46:42,876 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 16 predicate places. [2024-06-20 16:46:42,876 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 0 transitions, 0 flow [2024-06-20 16:46:42,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:46:42,879 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-20 16:46:42,879 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-20 16:46:42,879 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-20 16:46:42,879 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-20 16:46:42,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2024-06-20 16:46:42,880 INFO L445 BasicCegarLoop]: Path program histogram: [36, 33, 20, 19, 18, 17, 15, 10, 9, 6, 6, 6, 5, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:46:42,883 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-20 16:46:42,883 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-20 16:46:42,886 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-20 16:46:42,886 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-20 16:46:42,887 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.06 04:46:42 BasicIcfg [2024-06-20 16:46:42,887 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-20 16:46:42,887 INFO L158 Benchmark]: Toolchain (without parser) took 490801.90ms. Allocated memory was 157.3MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 94.8MB in the beginning and 853.0MB in the end (delta: -758.2MB). Peak memory consumption was 453.3MB. Max. memory is 16.1GB. [2024-06-20 16:46:42,888 INFO L158 Benchmark]: Witness Parser took 0.19ms. Allocated memory is still 157.3MB. Free memory is still 119.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-20 16:46:42,888 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 157.3MB. Free memory is still 113.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-20 16:46:42,888 INFO L158 Benchmark]: CACSL2BoogieTranslator took 750.35ms. Allocated memory is still 157.3MB. Free memory was 94.8MB in the beginning and 123.5MB in the end (delta: -28.7MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2024-06-20 16:46:42,888 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.43ms. Allocated memory is still 157.3MB. Free memory was 123.5MB in the beginning and 120.1MB in the end (delta: 3.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-20 16:46:42,889 INFO L158 Benchmark]: Boogie Preprocessor took 56.73ms. Allocated memory is still 157.3MB. Free memory was 120.1MB in the beginning and 116.6MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-20 16:46:42,889 INFO L158 Benchmark]: RCFGBuilder took 754.79ms. Allocated memory is still 157.3MB. Free memory was 116.6MB in the beginning and 58.5MB in the end (delta: 58.1MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2024-06-20 16:46:42,889 INFO L158 Benchmark]: TraceAbstraction took 489175.91ms. Allocated memory was 157.3MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 57.9MB in the beginning and 853.0MB in the end (delta: -795.1MB). Peak memory consumption was 416.2MB. Max. memory is 16.1GB. [2024-06-20 16:46:42,890 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.19ms. Allocated memory is still 157.3MB. Free memory is still 119.4MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.12ms. Allocated memory is still 157.3MB. Free memory is still 113.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 750.35ms. Allocated memory is still 157.3MB. Free memory was 94.8MB in the beginning and 123.5MB in the end (delta: -28.7MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.43ms. Allocated memory is still 157.3MB. Free memory was 123.5MB in the beginning and 120.1MB in the end (delta: 3.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 56.73ms. Allocated memory is still 157.3MB. Free memory was 120.1MB in the beginning and 116.6MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 754.79ms. Allocated memory is still 157.3MB. Free memory was 116.6MB in the beginning and 58.5MB in the end (delta: 58.1MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. * TraceAbstraction took 489175.91ms. Allocated memory was 157.3MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 57.9MB in the beginning and 853.0MB in the end (delta: -795.1MB). Peak memory consumption was 416.2MB. 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, 50 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: 489.0s, OverallIterations: 226, TraceHistogramMax: 1, PathProgramHistogramMax: 36, EmptinessCheckTime: 0.0s, AutomataDifference: 175.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15223 SdHoareTripleChecker+Valid, 65.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12969 mSDsluCounter, 9019 SdHoareTripleChecker+Invalid, 57.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8166 mSDsCounter, 2634 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 104249 IncrementalHoareTripleChecker+Invalid, 106883 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2634 mSolverCounterUnsat, 853 mSDtfsCounter, 104249 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2671 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2661 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5778 ImplicationChecksByTransitivity, 88.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4060occurred in iteration=125, InterpolantAutomatonStates: 2330, 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, 2.3s SatisfiabilityAnalysisTime, 309.9s InterpolantComputationTime, 3742 NumberOfCodeBlocks, 3742 NumberOfCodeBlocksAsserted, 226 NumberOfCheckSat, 3516 ConstructedInterpolants, 0 QuantifiedInterpolants, 176258 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 226 InterpolantComputations, 226 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! [2024-06-20 16:46:43,007 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