./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix000.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/mix000.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de 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/mix000.oepc.i ./goblint.2024-06-19_11-23-25.files/protection/mix000.oepc.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 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 18:09:13,994 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:09:14,066 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:09:14,073 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:09:14,073 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:09:14,102 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:09:14,104 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:09:14,104 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:09:14,105 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:09:14,108 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:09:14,108 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:09:14,109 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:09:14,109 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:09:14,110 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:09:14,111 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:09:14,111 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:09:14,111 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:09:14,111 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:09:14,112 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:09:14,112 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:09:14,112 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:09:14,112 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:09:14,112 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:09:14,113 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:09:14,113 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:09:14,113 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:09:14,113 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:09:14,114 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:09:14,114 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:09:14,114 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:09:14,115 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:09:14,115 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:09:14,115 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:09:14,116 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:09:14,116 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:09:14,116 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:09:14,116 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:09:14,116 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:09:14,117 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:09:14,117 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:09:14,117 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:09:14,117 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:09:14,117 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:09:14,118 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:09:14,358 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:09:14,381 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:09:14,383 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:09:14,384 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:09:14,384 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:09:14,385 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix000.oepc.i [2024-06-27 18:09:15,433 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:09:15,653 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:09:15,656 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix000.oepc.i [2024-06-27 18:09:15,671 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6f3470ae/f892a0f3e8e44b01af16448ed5af91cc/FLAG6a77f6024 [2024-06-27 18:09:15,682 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6f3470ae/f892a0f3e8e44b01af16448ed5af91cc [2024-06-27 18:09:15,684 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:09:15,685 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:09:15,687 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix000.oepc.yml/witness.yml [2024-06-27 18:09:15,795 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:09:15,796 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:09:15,798 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:09:15,798 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:09:15,801 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:09:15,802 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:09:15" (1/2) ... [2024-06-27 18:09:15,803 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a5f4b26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:09:15, skipping insertion in model container [2024-06-27 18:09:15,803 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:09:15" (1/2) ... [2024-06-27 18:09:15,804 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@63761feb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:09:15, skipping insertion in model container [2024-06-27 18:09:15,804 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:09:15" (2/2) ... [2024-06-27 18:09:15,805 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a5f4b26 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:09:15, skipping insertion in model container [2024-06-27 18:09:15,805 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:09:15" (2/2) ... [2024-06-27 18:09:15,805 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:09:15,857 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:09:15,858 INFO L97 edCorrectnessWitness]: Location invariant before [L834-L834] ((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) [2024-06-27 18:09:15,858 INFO L97 edCorrectnessWitness]: Location invariant before [L835-L835] ((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) [2024-06-27 18:09:15,859 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:09:15,859 INFO L106 edCorrectnessWitness]: ghost_update [L832-L832] multithreaded = 1; [2024-06-27 18:09:15,893 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:09:16,059 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix000.oepc.i[988,1001] [2024-06-27 18:09:16,237 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:09:16,245 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:09:16,276 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix000.oepc.i[988,1001] Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:09:16,364 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:09:16,400 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:09:16,400 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:09:16 WrapperNode [2024-06-27 18:09:16,401 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:09:16,402 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:09:16,402 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:09:16,402 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:09:16,407 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:09:16" (1/1) ... [2024-06-27 18:09:16,433 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:09:16" (1/1) ... [2024-06-27 18:09:16,465 INFO L138 Inliner]: procedures = 174, calls = 37, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 133 [2024-06-27 18:09:16,465 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:09:16,466 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:09:16,467 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:09:16,467 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:09:16,475 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:09:16" (1/1) ... [2024-06-27 18:09:16,476 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:09:16" (1/1) ... [2024-06-27 18:09:16,489 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:09:16" (1/1) ... [2024-06-27 18:09:16,506 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]. [2024-06-27 18:09:16,510 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:09:16" (1/1) ... [2024-06-27 18:09:16,511 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:09:16" (1/1) ... [2024-06-27 18:09:16,521 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:09:16" (1/1) ... [2024-06-27 18:09:16,527 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:09:16" (1/1) ... [2024-06-27 18:09:16,529 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:09:16" (1/1) ... [2024-06-27 18:09:16,535 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:09:16" (1/1) ... [2024-06-27 18:09:16,538 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:09:16,541 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:09:16,541 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:09:16,541 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:09:16,542 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:09:16" (1/1) ... [2024-06-27 18:09:16,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:09:16,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:09:16,605 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) [2024-06-27 18:09:16,632 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 [2024-06-27 18:09:16,655 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:09:16,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:09:16,656 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:09:16,656 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:09:16,657 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:09:16,657 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:09:16,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:09:16,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:09:16,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:09:16,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:09:16,659 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 18:09:16,782 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:09:16,784 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:09:17,008 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:09:17,008 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:09:17,119 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:09:17,120 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:09:17,121 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:09:17 BoogieIcfgContainer [2024-06-27 18:09:17,122 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:09:17,124 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:09:17,124 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:09:17,126 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:09:17,127 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:09:15" (1/4) ... [2024-06-27 18:09:17,131 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63d8177b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:09:17, skipping insertion in model container [2024-06-27 18:09:17,132 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:09:15" (2/4) ... [2024-06-27 18:09:17,132 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63d8177b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:09:17, skipping insertion in model container [2024-06-27 18:09:17,132 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:09:16" (3/4) ... [2024-06-27 18:09:17,133 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63d8177b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:09:17, skipping insertion in model container [2024-06-27 18:09:17,133 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:09:17" (4/4) ... [2024-06-27 18:09:17,134 INFO L112 eAbstractionObserver]: Analyzing ICFG mix000.oepc.i [2024-06-27 18:09:17,148 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:09:17,148 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 18:09:17,148 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:09:17,221 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:09:17,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 37 transitions, 82 flow [2024-06-27 18:09:17,277 INFO L124 PetriNetUnfolderBase]: 1/35 cut-off events. [2024-06-27 18:09:17,277 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:09:17,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 35 events. 1/35 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 54 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2024-06-27 18:09:17,282 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 37 transitions, 82 flow [2024-06-27 18:09:17,285 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 35 transitions, 76 flow [2024-06-27 18:09:17,296 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:09:17,303 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;@1d827ab7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:09:17,303 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-27 18:09:17,307 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:09:17,307 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 18:09:17,307 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:09:17,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:17,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:09:17,308 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:17,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:17,316 INFO L85 PathProgramCache]: Analyzing trace with hash 351384175, now seen corresponding path program 1 times [2024-06-27 18:09:17,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:17,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164121407] [2024-06-27 18:09:17,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:17,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:17,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:18,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:18,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:18,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164121407] [2024-06-27 18:09:18,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164121407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:18,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:18,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:09:18,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270929967] [2024-06-27 18:09:18,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:18,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:09:18,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:18,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:09:18,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:09:18,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 37 [2024-06-27 18:09:18,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:18,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:18,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 37 [2024-06-27 18:09:18,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:18,437 INFO L124 PetriNetUnfolderBase]: 475/961 cut-off events. [2024-06-27 18:09:18,438 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-06-27 18:09:18,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1777 conditions, 961 events. 475/961 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5428 event pairs, 334 based on Foata normal form. 36/899 useless extension candidates. Maximal degree in co-relation 1766. Up to 787 conditions per place. [2024-06-27 18:09:18,448 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 30 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-06-27 18:09:18,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 45 transitions, 167 flow [2024-06-27 18:09:18,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:09:18,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:09:18,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2024-06-27 18:09:18,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6936936936936937 [2024-06-27 18:09:18,460 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 76 flow. Second operand 3 states and 77 transitions. [2024-06-27 18:09:18,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 45 transitions, 167 flow [2024-06-27 18:09:18,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 45 transitions, 164 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:09:18,466 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 100 flow [2024-06-27 18:09:18,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2024-06-27 18:09:18,473 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2024-06-27 18:09:18,474 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 100 flow [2024-06-27 18:09:18,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:18,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:18,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:09:18,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:09:18,475 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:18,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:18,475 INFO L85 PathProgramCache]: Analyzing trace with hash 351384258, now seen corresponding path program 1 times [2024-06-27 18:09:18,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:18,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415485002] [2024-06-27 18:09:18,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:18,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:18,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:18,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:18,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:18,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415485002] [2024-06-27 18:09:18,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415485002] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:18,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:18,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:09:18,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608403177] [2024-06-27 18:09:18,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:18,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:09:18,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:18,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:09:18,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:09:18,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 37 [2024-06-27 18:09:18,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:18,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:18,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 37 [2024-06-27 18:09:18,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:18,681 INFO L124 PetriNetUnfolderBase]: 219/526 cut-off events. [2024-06-27 18:09:18,681 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2024-06-27 18:09:18,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 981 conditions, 526 events. 219/526 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2984 event pairs, 130 based on Foata normal form. 0/496 useless extension candidates. Maximal degree in co-relation 969. Up to 340 conditions per place. [2024-06-27 18:09:18,684 INFO L140 encePairwiseOnDemand]: 34/37 looper letters, 24 selfloop transitions, 3 changer transitions 2/46 dead transitions. [2024-06-27 18:09:18,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 46 transitions, 173 flow [2024-06-27 18:09:18,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:09:18,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:09:18,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 83 transitions. [2024-06-27 18:09:18,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7477477477477478 [2024-06-27 18:09:18,687 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 100 flow. Second operand 3 states and 83 transitions. [2024-06-27 18:09:18,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 46 transitions, 173 flow [2024-06-27 18:09:18,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 46 transitions, 170 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:09:18,692 INFO L231 Difference]: Finished difference. Result has 42 places, 34 transitions, 92 flow [2024-06-27 18:09:18,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=42, PETRI_TRANSITIONS=34} [2024-06-27 18:09:18,693 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2024-06-27 18:09:18,693 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 34 transitions, 92 flow [2024-06-27 18:09:18,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:18,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:18,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:18,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:09:18,695 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:18,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:18,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1622136343, now seen corresponding path program 1 times [2024-06-27 18:09:18,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:18,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917748485] [2024-06-27 18:09:18,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:18,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:18,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:19,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:19,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:19,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917748485] [2024-06-27 18:09:19,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917748485] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:19,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:19,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:09:19,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397545570] [2024-06-27 18:09:19,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:19,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:09:19,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:19,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:09:19,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:09:19,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 37 [2024-06-27 18:09:19,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:19,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:19,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 37 [2024-06-27 18:09:19,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:19,363 INFO L124 PetriNetUnfolderBase]: 342/721 cut-off events. [2024-06-27 18:09:19,363 INFO L125 PetriNetUnfolderBase]: For 167/167 co-relation queries the response was YES. [2024-06-27 18:09:19,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1472 conditions, 721 events. 342/721 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3826 event pairs, 218 based on Foata normal form. 2/693 useless extension candidates. Maximal degree in co-relation 1459. Up to 562 conditions per place. [2024-06-27 18:09:19,367 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 34 selfloop transitions, 6 changer transitions 0/51 dead transitions. [2024-06-27 18:09:19,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 51 transitions, 218 flow [2024-06-27 18:09:19,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:09:19,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:09:19,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2024-06-27 18:09:19,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6216216216216216 [2024-06-27 18:09:19,371 INFO L175 Difference]: Start difference. First operand has 42 places, 34 transitions, 92 flow. Second operand 4 states and 92 transitions. [2024-06-27 18:09:19,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 51 transitions, 218 flow [2024-06-27 18:09:19,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 51 transitions, 210 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:09:19,373 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 135 flow [2024-06-27 18:09:19,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=135, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2024-06-27 18:09:19,374 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 3 predicate places. [2024-06-27 18:09:19,375 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 135 flow [2024-06-27 18:09:19,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:19,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:19,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:19,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:09:19,375 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:19,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:19,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1253381954, now seen corresponding path program 1 times [2024-06-27 18:09:19,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:19,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135705348] [2024-06-27 18:09:19,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:19,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:19,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:20,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:20,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:20,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135705348] [2024-06-27 18:09:20,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135705348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:20,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:20,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:09:20,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722915327] [2024-06-27 18:09:20,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:20,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:09:20,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:20,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:09:20,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:09:20,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 37 [2024-06-27 18:09:20,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 135 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 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) [2024-06-27 18:09:20,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:20,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 37 [2024-06-27 18:09:20,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:20,238 INFO L124 PetriNetUnfolderBase]: 342/729 cut-off events. [2024-06-27 18:09:20,238 INFO L125 PetriNetUnfolderBase]: For 292/292 co-relation queries the response was YES. [2024-06-27 18:09:20,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1621 conditions, 729 events. 342/729 cut-off events. For 292/292 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3899 event pairs, 143 based on Foata normal form. 4/703 useless extension candidates. Maximal degree in co-relation 1606. Up to 532 conditions per place. [2024-06-27 18:09:20,241 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 42 selfloop transitions, 8 changer transitions 0/61 dead transitions. [2024-06-27 18:09:20,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 61 transitions, 293 flow [2024-06-27 18:09:20,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:09:20,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:09:20,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2024-06-27 18:09:20,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6216216216216216 [2024-06-27 18:09:20,243 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 135 flow. Second operand 5 states and 115 transitions. [2024-06-27 18:09:20,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 61 transitions, 293 flow [2024-06-27 18:09:20,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 61 transitions, 286 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-27 18:09:20,245 INFO L231 Difference]: Finished difference. Result has 48 places, 41 transitions, 163 flow [2024-06-27 18:09:20,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=163, PETRI_PLACES=48, PETRI_TRANSITIONS=41} [2024-06-27 18:09:20,246 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 7 predicate places. [2024-06-27 18:09:20,246 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 41 transitions, 163 flow [2024-06-27 18:09:20,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 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) [2024-06-27 18:09:20,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:20,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:20,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:09:20,247 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:20,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:20,247 INFO L85 PathProgramCache]: Analyzing trace with hash -339406244, now seen corresponding path program 1 times [2024-06-27 18:09:20,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:20,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129652008] [2024-06-27 18:09:20,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:20,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:20,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:20,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:20,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:20,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129652008] [2024-06-27 18:09:20,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129652008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:20,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:20,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:09:20,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291967942] [2024-06-27 18:09:20,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:20,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:09:20,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:20,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:09:20,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:09:20,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:09:20,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 41 transitions, 163 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) [2024-06-27 18:09:20,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:20,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:09:20,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:20,926 INFO L124 PetriNetUnfolderBase]: 559/1100 cut-off events. [2024-06-27 18:09:20,926 INFO L125 PetriNetUnfolderBase]: For 692/692 co-relation queries the response was YES. [2024-06-27 18:09:20,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2603 conditions, 1100 events. 559/1100 cut-off events. For 692/692 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5910 event pairs, 254 based on Foata normal form. 1/1059 useless extension candidates. Maximal degree in co-relation 2585. Up to 908 conditions per place. [2024-06-27 18:09:20,932 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 40 selfloop transitions, 8 changer transitions 0/55 dead transitions. [2024-06-27 18:09:20,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 55 transitions, 293 flow [2024-06-27 18:09:20,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:09:20,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:09:20,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 88 transitions. [2024-06-27 18:09:20,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4756756756756757 [2024-06-27 18:09:20,934 INFO L175 Difference]: Start difference. First operand has 48 places, 41 transitions, 163 flow. Second operand 5 states and 88 transitions. [2024-06-27 18:09:20,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 55 transitions, 293 flow [2024-06-27 18:09:20,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 55 transitions, 276 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 18:09:20,936 INFO L231 Difference]: Finished difference. Result has 50 places, 43 transitions, 178 flow [2024-06-27 18:09:20,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=178, PETRI_PLACES=50, PETRI_TRANSITIONS=43} [2024-06-27 18:09:20,937 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 9 predicate places. [2024-06-27 18:09:20,937 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 178 flow [2024-06-27 18:09:20,937 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) [2024-06-27 18:09:20,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:20,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:20,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:09:20,938 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:20,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:20,938 INFO L85 PathProgramCache]: Analyzing trace with hash -942820249, now seen corresponding path program 1 times [2024-06-27 18:09:20,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:20,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030013312] [2024-06-27 18:09:20,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:20,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:20,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:21,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:21,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:21,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030013312] [2024-06-27 18:09:21,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030013312] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:21,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:21,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:09:21,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222149554] [2024-06-27 18:09:21,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:21,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:09:21,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:21,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:09:21,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:09:21,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 18:09:21,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 178 flow. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 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) [2024-06-27 18:09:21,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:21,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 18:09:21,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:22,115 INFO L124 PetriNetUnfolderBase]: 427/867 cut-off events. [2024-06-27 18:09:22,115 INFO L125 PetriNetUnfolderBase]: For 811/811 co-relation queries the response was YES. [2024-06-27 18:09:22,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2147 conditions, 867 events. 427/867 cut-off events. For 811/811 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4642 event pairs, 72 based on Foata normal form. 4/834 useless extension candidates. Maximal degree in co-relation 2128. Up to 618 conditions per place. [2024-06-27 18:09:22,120 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 55 selfloop transitions, 11 changer transitions 0/77 dead transitions. [2024-06-27 18:09:22,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 77 transitions, 396 flow [2024-06-27 18:09:22,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:09:22,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:09:22,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 149 transitions. [2024-06-27 18:09:22,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5752895752895753 [2024-06-27 18:09:22,122 INFO L175 Difference]: Start difference. First operand has 50 places, 43 transitions, 178 flow. Second operand 7 states and 149 transitions. [2024-06-27 18:09:22,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 77 transitions, 396 flow [2024-06-27 18:09:22,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 77 transitions, 382 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-27 18:09:22,124 INFO L231 Difference]: Finished difference. Result has 54 places, 45 transitions, 203 flow [2024-06-27 18:09:22,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=203, PETRI_PLACES=54, PETRI_TRANSITIONS=45} [2024-06-27 18:09:22,125 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 13 predicate places. [2024-06-27 18:09:22,125 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 45 transitions, 203 flow [2024-06-27 18:09:22,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 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) [2024-06-27 18:09:22,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:22,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:22,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:09:22,126 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:22,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:22,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1931657930, now seen corresponding path program 1 times [2024-06-27 18:09:22,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:22,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068137202] [2024-06-27 18:09:22,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:22,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:22,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:22,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:22,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:22,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068137202] [2024-06-27 18:09:22,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068137202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:22,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:22,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:09:22,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648950930] [2024-06-27 18:09:22,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:22,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:09:22,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:22,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:09:22,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:09:22,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:09:22,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 203 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) [2024-06-27 18:09:22,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:22,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:09:22,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:22,964 INFO L124 PetriNetUnfolderBase]: 553/1064 cut-off events. [2024-06-27 18:09:22,964 INFO L125 PetriNetUnfolderBase]: For 1201/1201 co-relation queries the response was YES. [2024-06-27 18:09:22,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2782 conditions, 1064 events. 553/1064 cut-off events. For 1201/1201 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5650 event pairs, 201 based on Foata normal form. 3/1031 useless extension candidates. Maximal degree in co-relation 2761. Up to 866 conditions per place. [2024-06-27 18:09:22,970 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 49 selfloop transitions, 10 changer transitions 0/66 dead transitions. [2024-06-27 18:09:22,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 66 transitions, 373 flow [2024-06-27 18:09:22,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:09:22,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:09:22,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-06-27 18:09:22,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-27 18:09:22,972 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 203 flow. Second operand 6 states and 105 transitions. [2024-06-27 18:09:22,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 66 transitions, 373 flow [2024-06-27 18:09:22,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 66 transitions, 349 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 18:09:22,977 INFO L231 Difference]: Finished difference. Result has 56 places, 47 transitions, 216 flow [2024-06-27 18:09:22,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=216, PETRI_PLACES=56, PETRI_TRANSITIONS=47} [2024-06-27 18:09:22,979 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 15 predicate places. [2024-06-27 18:09:22,980 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 47 transitions, 216 flow [2024-06-27 18:09:22,980 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) [2024-06-27 18:09:22,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:22,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:22,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:09:22,980 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:22,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:22,981 INFO L85 PathProgramCache]: Analyzing trace with hash 272895958, now seen corresponding path program 1 times [2024-06-27 18:09:22,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:22,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753035852] [2024-06-27 18:09:22,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:22,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:22,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:23,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:23,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:23,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753035852] [2024-06-27 18:09:23,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753035852] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:23,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:23,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:09:23,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140174964] [2024-06-27 18:09:23,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:23,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:09:23,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:23,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:09:23,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:09:23,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:09:23,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 47 transitions, 216 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) [2024-06-27 18:09:23,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:23,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:09:23,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:23,730 INFO L124 PetriNetUnfolderBase]: 567/1066 cut-off events. [2024-06-27 18:09:23,730 INFO L125 PetriNetUnfolderBase]: For 1343/1343 co-relation queries the response was YES. [2024-06-27 18:09:23,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2901 conditions, 1066 events. 567/1066 cut-off events. For 1343/1343 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5601 event pairs, 170 based on Foata normal form. 1/1030 useless extension candidates. Maximal degree in co-relation 2878. Up to 891 conditions per place. [2024-06-27 18:09:23,736 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 54 selfloop transitions, 13 changer transitions 0/74 dead transitions. [2024-06-27 18:09:23,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 74 transitions, 443 flow [2024-06-27 18:09:23,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:09:23,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:09:23,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2024-06-27 18:09:23,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 18:09:23,737 INFO L175 Difference]: Start difference. First operand has 56 places, 47 transitions, 216 flow. Second operand 6 states and 108 transitions. [2024-06-27 18:09:23,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 74 transitions, 443 flow [2024-06-27 18:09:23,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 74 transitions, 419 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 18:09:23,740 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 272 flow [2024-06-27 18:09:23,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=272, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2024-06-27 18:09:23,741 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 18 predicate places. [2024-06-27 18:09:23,741 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 272 flow [2024-06-27 18:09:23,741 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) [2024-06-27 18:09:23,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:23,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:23,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:09:23,742 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:23,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:23,742 INFO L85 PathProgramCache]: Analyzing trace with hash 282012748, now seen corresponding path program 2 times [2024-06-27 18:09:23,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:23,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203196932] [2024-06-27 18:09:23,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:23,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:23,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:24,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:24,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:24,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203196932] [2024-06-27 18:09:24,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203196932] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:24,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:24,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:09:24,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861870279] [2024-06-27 18:09:24,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:24,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:09:24,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:24,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:09:24,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:09:24,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:09:24,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 272 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) [2024-06-27 18:09:24,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:24,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:09:24,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:24,446 INFO L124 PetriNetUnfolderBase]: 565/1090 cut-off events. [2024-06-27 18:09:24,446 INFO L125 PetriNetUnfolderBase]: For 1706/1706 co-relation queries the response was YES. [2024-06-27 18:09:24,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3085 conditions, 1090 events. 565/1090 cut-off events. For 1706/1706 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5824 event pairs, 211 based on Foata normal form. 1/1054 useless extension candidates. Maximal degree in co-relation 3060. Up to 915 conditions per place. [2024-06-27 18:09:24,452 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 51 selfloop transitions, 10 changer transitions 0/68 dead transitions. [2024-06-27 18:09:24,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 68 transitions, 428 flow [2024-06-27 18:09:24,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:09:24,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:09:24,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 101 transitions. [2024-06-27 18:09:24,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45495495495495497 [2024-06-27 18:09:24,456 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 272 flow. Second operand 6 states and 101 transitions. [2024-06-27 18:09:24,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 68 transitions, 428 flow [2024-06-27 18:09:24,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 68 transitions, 420 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-27 18:09:24,459 INFO L231 Difference]: Finished difference. Result has 64 places, 54 transitions, 289 flow [2024-06-27 18:09:24,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=289, PETRI_PLACES=64, PETRI_TRANSITIONS=54} [2024-06-27 18:09:24,460 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 23 predicate places. [2024-06-27 18:09:24,460 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 54 transitions, 289 flow [2024-06-27 18:09:24,461 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) [2024-06-27 18:09:24,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:24,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:24,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 18:09:24,463 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:24,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:24,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1760634297, now seen corresponding path program 1 times [2024-06-27 18:09:24,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:24,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821777860] [2024-06-27 18:09:24,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:24,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:24,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:25,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:25,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:25,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821777860] [2024-06-27 18:09:25,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821777860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:25,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:25,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:09:25,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905816936] [2024-06-27 18:09:25,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:25,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:09:25,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:25,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:09:25,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:09:25,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:09:25,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 54 transitions, 289 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:25,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:25,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:09:25,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:25,414 INFO L124 PetriNetUnfolderBase]: 579/1089 cut-off events. [2024-06-27 18:09:25,414 INFO L125 PetriNetUnfolderBase]: For 2091/2091 co-relation queries the response was YES. [2024-06-27 18:09:25,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3199 conditions, 1089 events. 579/1089 cut-off events. For 2091/2091 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5736 event pairs, 169 based on Foata normal form. 1/1052 useless extension candidates. Maximal degree in co-relation 3171. Up to 865 conditions per place. [2024-06-27 18:09:25,421 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 61 selfloop transitions, 18 changer transitions 0/86 dead transitions. [2024-06-27 18:09:25,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 86 transitions, 557 flow [2024-06-27 18:09:25,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:09:25,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:09:25,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-27 18:09:25,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4942084942084942 [2024-06-27 18:09:25,423 INFO L175 Difference]: Start difference. First operand has 64 places, 54 transitions, 289 flow. Second operand 7 states and 128 transitions. [2024-06-27 18:09:25,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 86 transitions, 557 flow [2024-06-27 18:09:25,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 86 transitions, 528 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 18:09:25,429 INFO L231 Difference]: Finished difference. Result has 66 places, 58 transitions, 325 flow [2024-06-27 18:09:25,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=325, PETRI_PLACES=66, PETRI_TRANSITIONS=58} [2024-06-27 18:09:25,431 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 25 predicate places. [2024-06-27 18:09:25,431 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 58 transitions, 325 flow [2024-06-27 18:09:25,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:25,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:25,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:25,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 18:09:25,431 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:25,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:25,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1987635920, now seen corresponding path program 1 times [2024-06-27 18:09:25,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:25,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180720890] [2024-06-27 18:09:25,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:25,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:25,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:25,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:25,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:25,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180720890] [2024-06-27 18:09:25,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180720890] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:25,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:25,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:09:25,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069681879] [2024-06-27 18:09:25,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:25,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:09:25,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:25,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:09:25,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:09:26,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:09:26,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 58 transitions, 325 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:26,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:26,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:09:26,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:26,408 INFO L124 PetriNetUnfolderBase]: 641/1197 cut-off events. [2024-06-27 18:09:26,408 INFO L125 PetriNetUnfolderBase]: For 2765/2765 co-relation queries the response was YES. [2024-06-27 18:09:26,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3680 conditions, 1197 events. 641/1197 cut-off events. For 2765/2765 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 6402 event pairs, 185 based on Foata normal form. 3/1158 useless extension candidates. Maximal degree in co-relation 3652. Up to 925 conditions per place. [2024-06-27 18:09:26,415 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 69 selfloop transitions, 18 changer transitions 0/94 dead transitions. [2024-06-27 18:09:26,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 94 transitions, 623 flow [2024-06-27 18:09:26,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:09:26,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:09:26,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-06-27 18:09:26,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5019305019305019 [2024-06-27 18:09:26,417 INFO L175 Difference]: Start difference. First operand has 66 places, 58 transitions, 325 flow. Second operand 7 states and 130 transitions. [2024-06-27 18:09:26,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 94 transitions, 623 flow [2024-06-27 18:09:26,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 94 transitions, 598 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-27 18:09:26,421 INFO L231 Difference]: Finished difference. Result has 71 places, 65 transitions, 391 flow [2024-06-27 18:09:26,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=391, PETRI_PLACES=71, PETRI_TRANSITIONS=65} [2024-06-27 18:09:26,422 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 30 predicate places. [2024-06-27 18:09:26,422 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 65 transitions, 391 flow [2024-06-27 18:09:26,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:26,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:26,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:26,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 18:09:26,423 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:26,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:26,424 INFO L85 PathProgramCache]: Analyzing trace with hash -905916709, now seen corresponding path program 2 times [2024-06-27 18:09:26,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:26,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87898084] [2024-06-27 18:09:26,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:26,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:26,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:27,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:27,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:27,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87898084] [2024-06-27 18:09:27,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87898084] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:27,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:27,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:09:27,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750176338] [2024-06-27 18:09:27,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:27,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:09:27,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:27,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:09:27,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:09:27,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:09:27,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 65 transitions, 391 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:27,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:27,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:09:27,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:27,478 INFO L124 PetriNetUnfolderBase]: 652/1221 cut-off events. [2024-06-27 18:09:27,479 INFO L125 PetriNetUnfolderBase]: For 3347/3347 co-relation queries the response was YES. [2024-06-27 18:09:27,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4063 conditions, 1221 events. 652/1221 cut-off events. For 3347/3347 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6594 event pairs, 183 based on Foata normal form. 1/1179 useless extension candidates. Maximal degree in co-relation 4032. Up to 1013 conditions per place. [2024-06-27 18:09:27,485 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 69 selfloop transitions, 15 changer transitions 0/91 dead transitions. [2024-06-27 18:09:27,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 91 transitions, 641 flow [2024-06-27 18:09:27,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:09:27,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:09:27,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-27 18:09:27,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4749034749034749 [2024-06-27 18:09:27,487 INFO L175 Difference]: Start difference. First operand has 71 places, 65 transitions, 391 flow. Second operand 7 states and 123 transitions. [2024-06-27 18:09:27,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 91 transitions, 641 flow [2024-06-27 18:09:27,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 91 transitions, 630 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-27 18:09:27,494 INFO L231 Difference]: Finished difference. Result has 76 places, 67 transitions, 431 flow [2024-06-27 18:09:27,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=431, PETRI_PLACES=76, PETRI_TRANSITIONS=67} [2024-06-27 18:09:27,496 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 35 predicate places. [2024-06-27 18:09:27,496 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 67 transitions, 431 flow [2024-06-27 18:09:27,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:27,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:27,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:27,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 18:09:27,497 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:27,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:27,497 INFO L85 PathProgramCache]: Analyzing trace with hash 127732938, now seen corresponding path program 2 times [2024-06-27 18:09:27,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:27,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252634812] [2024-06-27 18:09:27,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:27,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:27,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:27,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:27,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:27,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252634812] [2024-06-27 18:09:27,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252634812] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:27,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:27,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:09:27,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26762626] [2024-06-27 18:09:27,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:27,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:09:27,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:27,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:09:27,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:09:28,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:09:28,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 67 transitions, 431 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:28,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:28,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:09:28,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:28,429 INFO L124 PetriNetUnfolderBase]: 685/1316 cut-off events. [2024-06-27 18:09:28,429 INFO L125 PetriNetUnfolderBase]: For 4116/4116 co-relation queries the response was YES. [2024-06-27 18:09:28,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4378 conditions, 1316 events. 685/1316 cut-off events. For 4116/4116 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7337 event pairs, 234 based on Foata normal form. 3/1272 useless extension candidates. Maximal degree in co-relation 4344. Up to 1072 conditions per place. [2024-06-27 18:09:28,439 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 68 selfloop transitions, 13 changer transitions 0/88 dead transitions. [2024-06-27 18:09:28,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 88 transitions, 655 flow [2024-06-27 18:09:28,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:09:28,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:09:28,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2024-06-27 18:09:28,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4555984555984556 [2024-06-27 18:09:28,440 INFO L175 Difference]: Start difference. First operand has 76 places, 67 transitions, 431 flow. Second operand 7 states and 118 transitions. [2024-06-27 18:09:28,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 88 transitions, 655 flow [2024-06-27 18:09:28,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 88 transitions, 624 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 18:09:28,445 INFO L231 Difference]: Finished difference. Result has 78 places, 69 transitions, 449 flow [2024-06-27 18:09:28,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=449, PETRI_PLACES=78, PETRI_TRANSITIONS=69} [2024-06-27 18:09:28,447 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 37 predicate places. [2024-06-27 18:09:28,447 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 69 transitions, 449 flow [2024-06-27 18:09:28,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:28,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:28,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:28,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 18:09:28,448 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:28,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:28,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1982071947, now seen corresponding path program 3 times [2024-06-27 18:09:28,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:28,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371465919] [2024-06-27 18:09:28,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:28,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:28,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:29,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:29,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:29,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371465919] [2024-06-27 18:09:29,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371465919] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:29,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:29,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:09:29,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553456088] [2024-06-27 18:09:29,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:29,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:09:29,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:29,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:09:29,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:09:29,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:09:29,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 69 transitions, 449 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:29,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:29,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:09:29,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:29,378 INFO L124 PetriNetUnfolderBase]: 683/1309 cut-off events. [2024-06-27 18:09:29,379 INFO L125 PetriNetUnfolderBase]: For 4460/4460 co-relation queries the response was YES. [2024-06-27 18:09:29,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4422 conditions, 1309 events. 683/1309 cut-off events. For 4460/4460 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7262 event pairs, 230 based on Foata normal form. 1/1264 useless extension candidates. Maximal degree in co-relation 4387. Up to 1087 conditions per place. [2024-06-27 18:09:29,386 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 69 selfloop transitions, 12 changer transitions 0/88 dead transitions. [2024-06-27 18:09:29,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 88 transitions, 663 flow [2024-06-27 18:09:29,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:09:29,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:09:29,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 117 transitions. [2024-06-27 18:09:29,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4517374517374517 [2024-06-27 18:09:29,388 INFO L175 Difference]: Start difference. First operand has 78 places, 69 transitions, 449 flow. Second operand 7 states and 117 transitions. [2024-06-27 18:09:29,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 88 transitions, 663 flow [2024-06-27 18:09:29,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 88 transitions, 624 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 18:09:29,394 INFO L231 Difference]: Finished difference. Result has 80 places, 69 transitions, 439 flow [2024-06-27 18:09:29,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=439, PETRI_PLACES=80, PETRI_TRANSITIONS=69} [2024-06-27 18:09:29,395 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 39 predicate places. [2024-06-27 18:09:29,395 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 69 transitions, 439 flow [2024-06-27 18:09:29,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:29,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:29,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:29,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 18:09:29,395 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:29,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:29,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1982071730, now seen corresponding path program 3 times [2024-06-27 18:09:29,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:29,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922541487] [2024-06-27 18:09:29,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:29,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:29,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:29,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:29,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:29,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922541487] [2024-06-27 18:09:29,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922541487] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:29,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:29,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:09:29,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221513866] [2024-06-27 18:09:29,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:29,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:09:29,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:29,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:09:29,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:09:29,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:09:29,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 69 transitions, 439 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:29,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:29,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:09:29,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:30,231 INFO L124 PetriNetUnfolderBase]: 677/1292 cut-off events. [2024-06-27 18:09:30,231 INFO L125 PetriNetUnfolderBase]: For 4696/4696 co-relation queries the response was YES. [2024-06-27 18:09:30,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4340 conditions, 1292 events. 677/1292 cut-off events. For 4696/4696 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7137 event pairs, 224 based on Foata normal form. 3/1251 useless extension candidates. Maximal degree in co-relation 4305. Up to 1018 conditions per place. [2024-06-27 18:09:30,244 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 69 selfloop transitions, 16 changer transitions 0/92 dead transitions. [2024-06-27 18:09:30,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 92 transitions, 673 flow [2024-06-27 18:09:30,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:09:30,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:09:30,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-27 18:09:30,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4749034749034749 [2024-06-27 18:09:30,246 INFO L175 Difference]: Start difference. First operand has 80 places, 69 transitions, 439 flow. Second operand 7 states and 123 transitions. [2024-06-27 18:09:30,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 92 transitions, 673 flow [2024-06-27 18:09:30,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 92 transitions, 632 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 18:09:30,252 INFO L231 Difference]: Finished difference. Result has 80 places, 69 transitions, 435 flow [2024-06-27 18:09:30,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=435, PETRI_PLACES=80, PETRI_TRANSITIONS=69} [2024-06-27 18:09:30,253 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 39 predicate places. [2024-06-27 18:09:30,254 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 69 transitions, 435 flow [2024-06-27 18:09:30,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:30,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:30,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:30,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 18:09:30,254 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:30,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:30,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1491823527, now seen corresponding path program 1 times [2024-06-27 18:09:30,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:30,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793079714] [2024-06-27 18:09:30,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:30,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:30,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:30,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:30,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:30,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793079714] [2024-06-27 18:09:30,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793079714] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:30,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:30,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:09:30,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468775038] [2024-06-27 18:09:30,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:30,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:09:30,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:30,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:09:30,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:09:31,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:09:31,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 69 transitions, 435 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-27 18:09:31,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:31,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:09:31,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:31,402 INFO L124 PetriNetUnfolderBase]: 699/1303 cut-off events. [2024-06-27 18:09:31,402 INFO L125 PetriNetUnfolderBase]: For 5211/5211 co-relation queries the response was YES. [2024-06-27 18:09:31,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4479 conditions, 1303 events. 699/1303 cut-off events. For 5211/5211 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 7121 event pairs, 139 based on Foata normal form. 2/1260 useless extension candidates. Maximal degree in co-relation 4444. Up to 1045 conditions per place. [2024-06-27 18:09:31,409 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 88 selfloop transitions, 13 changer transitions 0/108 dead transitions. [2024-06-27 18:09:31,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 108 transitions, 755 flow [2024-06-27 18:09:31,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:09:31,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:09:31,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-27 18:09:31,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48986486486486486 [2024-06-27 18:09:31,411 INFO L175 Difference]: Start difference. First operand has 80 places, 69 transitions, 435 flow. Second operand 8 states and 145 transitions. [2024-06-27 18:09:31,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 108 transitions, 755 flow [2024-06-27 18:09:31,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 108 transitions, 708 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 18:09:31,417 INFO L231 Difference]: Finished difference. Result has 82 places, 71 transitions, 435 flow [2024-06-27 18:09:31,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=435, PETRI_PLACES=82, PETRI_TRANSITIONS=71} [2024-06-27 18:09:31,418 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 41 predicate places. [2024-06-27 18:09:31,418 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 71 transitions, 435 flow [2024-06-27 18:09:31,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-27 18:09:31,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:31,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:31,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 18:09:31,418 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:31,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:31,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1491818691, now seen corresponding path program 1 times [2024-06-27 18:09:31,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:31,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259800860] [2024-06-27 18:09:31,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:31,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:31,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:32,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:32,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:32,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259800860] [2024-06-27 18:09:32,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259800860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:32,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:32,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:09:32,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811751580] [2024-06-27 18:09:32,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:32,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:09:32,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:32,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:09:32,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:09:32,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:09:32,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 71 transitions, 435 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-27 18:09:32,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:32,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:09:32,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:32,544 INFO L124 PetriNetUnfolderBase]: 739/1351 cut-off events. [2024-06-27 18:09:32,544 INFO L125 PetriNetUnfolderBase]: For 5729/5729 co-relation queries the response was YES. [2024-06-27 18:09:32,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4728 conditions, 1351 events. 739/1351 cut-off events. For 5729/5729 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7412 event pairs, 190 based on Foata normal form. 1/1312 useless extension candidates. Maximal degree in co-relation 4692. Up to 903 conditions per place. [2024-06-27 18:09:32,550 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 76 selfloop transitions, 29 changer transitions 0/112 dead transitions. [2024-06-27 18:09:32,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 112 transitions, 801 flow [2024-06-27 18:09:32,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:09:32,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:09:32,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-27 18:09:32,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5101351351351351 [2024-06-27 18:09:32,553 INFO L175 Difference]: Start difference. First operand has 82 places, 71 transitions, 435 flow. Second operand 8 states and 151 transitions. [2024-06-27 18:09:32,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 112 transitions, 801 flow [2024-06-27 18:09:32,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 112 transitions, 770 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 18:09:32,562 INFO L231 Difference]: Finished difference. Result has 85 places, 76 transitions, 510 flow [2024-06-27 18:09:32,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=510, PETRI_PLACES=85, PETRI_TRANSITIONS=76} [2024-06-27 18:09:32,563 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 44 predicate places. [2024-06-27 18:09:32,563 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 76 transitions, 510 flow [2024-06-27 18:09:32,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-27 18:09:32,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:32,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:32,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 18:09:32,564 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:32,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:32,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1491818877, now seen corresponding path program 2 times [2024-06-27 18:09:32,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:32,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198705577] [2024-06-27 18:09:32,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:32,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:32,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:33,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:33,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:33,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198705577] [2024-06-27 18:09:33,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198705577] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:33,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:33,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:09:33,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431404691] [2024-06-27 18:09:33,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:33,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:09:33,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:33,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:09:33,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:09:33,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:09:33,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 76 transitions, 510 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-27 18:09:33,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:33,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:09:33,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:33,627 INFO L124 PetriNetUnfolderBase]: 767/1383 cut-off events. [2024-06-27 18:09:33,627 INFO L125 PetriNetUnfolderBase]: For 7060/7060 co-relation queries the response was YES. [2024-06-27 18:09:33,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5273 conditions, 1383 events. 767/1383 cut-off events. For 7060/7060 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 7565 event pairs, 145 based on Foata normal form. 2/1348 useless extension candidates. Maximal degree in co-relation 5235. Up to 1038 conditions per place. [2024-06-27 18:09:33,635 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 84 selfloop transitions, 25 changer transitions 0/116 dead transitions. [2024-06-27 18:09:33,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 116 transitions, 894 flow [2024-06-27 18:09:33,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:09:33,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:09:33,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-27 18:09:33,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5033783783783784 [2024-06-27 18:09:33,641 INFO L175 Difference]: Start difference. First operand has 85 places, 76 transitions, 510 flow. Second operand 8 states and 149 transitions. [2024-06-27 18:09:33,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 116 transitions, 894 flow [2024-06-27 18:09:33,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 116 transitions, 865 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 18:09:33,650 INFO L231 Difference]: Finished difference. Result has 89 places, 80 transitions, 572 flow [2024-06-27 18:09:33,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=572, PETRI_PLACES=89, PETRI_TRANSITIONS=80} [2024-06-27 18:09:33,651 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 48 predicate places. [2024-06-27 18:09:33,651 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 80 transitions, 572 flow [2024-06-27 18:09:33,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-27 18:09:33,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:33,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:33,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 18:09:33,651 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:33,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:33,652 INFO L85 PathProgramCache]: Analyzing trace with hash -701527377, now seen corresponding path program 2 times [2024-06-27 18:09:33,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:33,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569151505] [2024-06-27 18:09:33,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:33,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:33,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:34,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:34,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:34,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569151505] [2024-06-27 18:09:34,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569151505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:34,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:34,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:09:34,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287559321] [2024-06-27 18:09:34,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:34,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:09:34,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:34,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:09:34,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:09:34,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:09:34,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 80 transitions, 572 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-27 18:09:34,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:34,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:09:34,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:34,801 INFO L124 PetriNetUnfolderBase]: 800/1446 cut-off events. [2024-06-27 18:09:34,802 INFO L125 PetriNetUnfolderBase]: For 8141/8141 co-relation queries the response was YES. [2024-06-27 18:09:34,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5728 conditions, 1446 events. 800/1446 cut-off events. For 8141/8141 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 8035 event pairs, 194 based on Foata normal form. 3/1407 useless extension candidates. Maximal degree in co-relation 5688. Up to 1111 conditions per place. [2024-06-27 18:09:34,811 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 87 selfloop transitions, 23 changer transitions 0/117 dead transitions. [2024-06-27 18:09:34,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 117 transitions, 921 flow [2024-06-27 18:09:34,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:09:34,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:09:34,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-27 18:09:34,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4966216216216216 [2024-06-27 18:09:34,812 INFO L175 Difference]: Start difference. First operand has 89 places, 80 transitions, 572 flow. Second operand 8 states and 147 transitions. [2024-06-27 18:09:34,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 117 transitions, 921 flow [2024-06-27 18:09:34,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 117 transitions, 886 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-27 18:09:34,820 INFO L231 Difference]: Finished difference. Result has 93 places, 83 transitions, 616 flow [2024-06-27 18:09:34,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=537, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=616, PETRI_PLACES=93, PETRI_TRANSITIONS=83} [2024-06-27 18:09:34,821 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 52 predicate places. [2024-06-27 18:09:34,821 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 83 transitions, 616 flow [2024-06-27 18:09:34,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-27 18:09:34,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:34,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:34,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 18:09:34,822 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:34,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:34,822 INFO L85 PathProgramCache]: Analyzing trace with hash 260037199, now seen corresponding path program 3 times [2024-06-27 18:09:34,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:34,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821135455] [2024-06-27 18:09:34,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:34,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:34,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:35,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:35,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:35,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821135455] [2024-06-27 18:09:35,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821135455] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:35,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:35,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:09:35,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115789078] [2024-06-27 18:09:35,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:35,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:09:35,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:35,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:09:35,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:09:35,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:09:35,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 83 transitions, 616 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-27 18:09:35,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:35,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:09:35,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:35,896 INFO L124 PetriNetUnfolderBase]: 811/1460 cut-off events. [2024-06-27 18:09:35,896 INFO L125 PetriNetUnfolderBase]: For 8556/8556 co-relation queries the response was YES. [2024-06-27 18:09:35,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5968 conditions, 1460 events. 811/1460 cut-off events. For 8556/8556 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 8118 event pairs, 192 based on Foata normal form. 1/1420 useless extension candidates. Maximal degree in co-relation 5926. Up to 1106 conditions per place. [2024-06-27 18:09:35,904 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 86 selfloop transitions, 26 changer transitions 0/119 dead transitions. [2024-06-27 18:09:35,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 119 transitions, 966 flow [2024-06-27 18:09:35,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:09:35,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:09:35,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-27 18:09:35,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5033783783783784 [2024-06-27 18:09:35,906 INFO L175 Difference]: Start difference. First operand has 93 places, 83 transitions, 616 flow. Second operand 8 states and 149 transitions. [2024-06-27 18:09:35,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 119 transitions, 966 flow [2024-06-27 18:09:35,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 119 transitions, 920 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 18:09:35,914 INFO L231 Difference]: Finished difference. Result has 95 places, 85 transitions, 649 flow [2024-06-27 18:09:35,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=649, PETRI_PLACES=95, PETRI_TRANSITIONS=85} [2024-06-27 18:09:35,915 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 54 predicate places. [2024-06-27 18:09:35,915 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 85 transitions, 649 flow [2024-06-27 18:09:35,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-27 18:09:35,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:35,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:35,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 18:09:35,916 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:35,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:35,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1981353949, now seen corresponding path program 3 times [2024-06-27 18:09:35,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:35,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74161226] [2024-06-27 18:09:35,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:35,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:35,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:36,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:36,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:36,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74161226] [2024-06-27 18:09:36,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74161226] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:36,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:36,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:09:36,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064230371] [2024-06-27 18:09:36,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:36,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:09:36,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:36,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:09:36,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:09:36,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:09:36,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 85 transitions, 649 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-27 18:09:36,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:36,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:09:36,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:36,808 INFO L124 PetriNetUnfolderBase]: 833/1529 cut-off events. [2024-06-27 18:09:36,808 INFO L125 PetriNetUnfolderBase]: For 9691/9691 co-relation queries the response was YES. [2024-06-27 18:09:36,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6233 conditions, 1529 events. 833/1529 cut-off events. For 9691/9691 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8746 event pairs, 209 based on Foata normal form. 2/1479 useless extension candidates. Maximal degree in co-relation 6190. Up to 1272 conditions per place. [2024-06-27 18:09:36,833 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 93 selfloop transitions, 17 changer transitions 0/117 dead transitions. [2024-06-27 18:09:36,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 117 transitions, 975 flow [2024-06-27 18:09:36,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:09:36,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:09:36,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-27 18:09:36,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-27 18:09:36,835 INFO L175 Difference]: Start difference. First operand has 95 places, 85 transitions, 649 flow. Second operand 8 states and 140 transitions. [2024-06-27 18:09:36,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 117 transitions, 975 flow [2024-06-27 18:09:36,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 117 transitions, 920 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 18:09:36,858 INFO L231 Difference]: Finished difference. Result has 97 places, 87 transitions, 655 flow [2024-06-27 18:09:36,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=594, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=655, PETRI_PLACES=97, PETRI_TRANSITIONS=87} [2024-06-27 18:09:36,859 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 56 predicate places. [2024-06-27 18:09:36,859 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 87 transitions, 655 flow [2024-06-27 18:09:36,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-27 18:09:36,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:36,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:36,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 18:09:36,860 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:36,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:36,861 INFO L85 PathProgramCache]: Analyzing trace with hash -335245393, now seen corresponding path program 4 times [2024-06-27 18:09:36,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:36,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180941780] [2024-06-27 18:09:36,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:36,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:36,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:37,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:37,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:37,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180941780] [2024-06-27 18:09:37,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180941780] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:37,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:37,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:09:37,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133954991] [2024-06-27 18:09:37,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:37,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:09:37,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:37,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:09:37,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:09:37,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:09:37,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 87 transitions, 655 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-27 18:09:37,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:37,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:09:37,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:38,191 INFO L124 PetriNetUnfolderBase]: 866/1634 cut-off events. [2024-06-27 18:09:38,192 INFO L125 PetriNetUnfolderBase]: For 10844/10844 co-relation queries the response was YES. [2024-06-27 18:09:38,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6518 conditions, 1634 events. 866/1634 cut-off events. For 10844/10844 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 9726 event pairs, 271 based on Foata normal form. 3/1580 useless extension candidates. Maximal degree in co-relation 6474. Up to 1314 conditions per place. [2024-06-27 18:09:38,202 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 92 selfloop transitions, 16 changer transitions 0/115 dead transitions. [2024-06-27 18:09:38,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 115 transitions, 972 flow [2024-06-27 18:09:38,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:09:38,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:09:38,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-27 18:09:38,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 18:09:38,225 INFO L175 Difference]: Start difference. First operand has 97 places, 87 transitions, 655 flow. Second operand 8 states and 136 transitions. [2024-06-27 18:09:38,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 115 transitions, 972 flow [2024-06-27 18:09:38,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 115 transitions, 931 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 18:09:38,236 INFO L231 Difference]: Finished difference. Result has 99 places, 90 transitions, 689 flow [2024-06-27 18:09:38,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=689, PETRI_PLACES=99, PETRI_TRANSITIONS=90} [2024-06-27 18:09:38,237 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 58 predicate places. [2024-06-27 18:09:38,237 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 90 transitions, 689 flow [2024-06-27 18:09:38,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-27 18:09:38,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:38,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:38,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 18:09:38,239 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:38,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:38,240 INFO L85 PathProgramCache]: Analyzing trace with hash -2058006567, now seen corresponding path program 4 times [2024-06-27 18:09:38,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:38,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644818370] [2024-06-27 18:09:38,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:38,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:38,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:38,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:38,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:38,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644818370] [2024-06-27 18:09:38,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644818370] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:38,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:38,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:09:38,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111169259] [2024-06-27 18:09:38,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:38,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:09:38,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:38,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:09:38,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:09:38,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:09:38,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 90 transitions, 689 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-27 18:09:38,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:38,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:09:38,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:39,292 INFO L124 PetriNetUnfolderBase]: 864/1626 cut-off events. [2024-06-27 18:09:39,292 INFO L125 PetriNetUnfolderBase]: For 11068/11068 co-relation queries the response was YES. [2024-06-27 18:09:39,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6540 conditions, 1626 events. 864/1626 cut-off events. For 11068/11068 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 9583 event pairs, 274 based on Foata normal form. 1/1572 useless extension candidates. Maximal degree in co-relation 6495. Up to 1357 conditions per place. [2024-06-27 18:09:39,303 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 95 selfloop transitions, 14 changer transitions 0/116 dead transitions. [2024-06-27 18:09:39,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 116 transitions, 989 flow [2024-06-27 18:09:39,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:09:39,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:09:39,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-27 18:09:39,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44932432432432434 [2024-06-27 18:09:39,311 INFO L175 Difference]: Start difference. First operand has 99 places, 90 transitions, 689 flow. Second operand 8 states and 133 transitions. [2024-06-27 18:09:39,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 116 transitions, 989 flow [2024-06-27 18:09:39,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 116 transitions, 947 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-27 18:09:39,323 INFO L231 Difference]: Finished difference. Result has 101 places, 92 transitions, 698 flow [2024-06-27 18:09:39,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=647, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=698, PETRI_PLACES=101, PETRI_TRANSITIONS=92} [2024-06-27 18:09:39,324 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 60 predicate places. [2024-06-27 18:09:39,324 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 92 transitions, 698 flow [2024-06-27 18:09:39,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-27 18:09:39,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:39,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:39,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 18:09:39,325 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:39,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:39,325 INFO L85 PathProgramCache]: Analyzing trace with hash -2057999871, now seen corresponding path program 5 times [2024-06-27 18:09:39,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:39,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937984523] [2024-06-27 18:09:39,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:39,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:39,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:39,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:39,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:39,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937984523] [2024-06-27 18:09:39,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937984523] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:39,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:39,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:09:39,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740700781] [2024-06-27 18:09:39,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:39,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:09:39,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:39,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:09:39,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:09:39,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:09:39,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 92 transitions, 698 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-27 18:09:39,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:39,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:09:39,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:40,311 INFO L124 PetriNetUnfolderBase]: 871/1621 cut-off events. [2024-06-27 18:09:40,311 INFO L125 PetriNetUnfolderBase]: For 11781/11781 co-relation queries the response was YES. [2024-06-27 18:09:40,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6595 conditions, 1621 events. 871/1621 cut-off events. For 11781/11781 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 9492 event pairs, 253 based on Foata normal form. 3/1573 useless extension candidates. Maximal degree in co-relation 6549. Up to 1280 conditions per place. [2024-06-27 18:09:40,320 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 97 selfloop transitions, 19 changer transitions 0/123 dead transitions. [2024-06-27 18:09:40,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 123 transitions, 1046 flow [2024-06-27 18:09:40,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:09:40,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:09:40,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-27 18:09:40,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47635135135135137 [2024-06-27 18:09:40,322 INFO L175 Difference]: Start difference. First operand has 101 places, 92 transitions, 698 flow. Second operand 8 states and 141 transitions. [2024-06-27 18:09:40,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 123 transitions, 1046 flow [2024-06-27 18:09:40,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 123 transitions, 1013 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 18:09:40,336 INFO L231 Difference]: Finished difference. Result has 103 places, 94 transitions, 739 flow [2024-06-27 18:09:40,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=665, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=739, PETRI_PLACES=103, PETRI_TRANSITIONS=94} [2024-06-27 18:09:40,336 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 62 predicate places. [2024-06-27 18:09:40,337 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 94 transitions, 739 flow [2024-06-27 18:09:40,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-27 18:09:40,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:40,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:40,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 18:09:40,337 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:40,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:40,338 INFO L85 PathProgramCache]: Analyzing trace with hash -2048506183, now seen corresponding path program 1 times [2024-06-27 18:09:40,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:40,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36341710] [2024-06-27 18:09:40,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:40,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:40,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:41,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:41,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:41,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36341710] [2024-06-27 18:09:41,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36341710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:41,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:41,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:09:41,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235679860] [2024-06-27 18:09:41,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:41,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:09:41,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:41,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:09:41,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:09:41,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:09:41,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 94 transitions, 739 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-27 18:09:41,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:41,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:09:41,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:41,512 INFO L124 PetriNetUnfolderBase]: 873/1649 cut-off events. [2024-06-27 18:09:41,512 INFO L125 PetriNetUnfolderBase]: For 12199/12199 co-relation queries the response was YES. [2024-06-27 18:09:41,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6710 conditions, 1649 events. 873/1649 cut-off events. For 12199/12199 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 9778 event pairs, 270 based on Foata normal form. 2/1594 useless extension candidates. Maximal degree in co-relation 6663. Up to 1358 conditions per place. [2024-06-27 18:09:41,520 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 98 selfloop transitions, 16 changer transitions 0/121 dead transitions. [2024-06-27 18:09:41,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 121 transitions, 1053 flow [2024-06-27 18:09:41,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:09:41,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:09:41,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-27 18:09:41,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44932432432432434 [2024-06-27 18:09:41,521 INFO L175 Difference]: Start difference. First operand has 103 places, 94 transitions, 739 flow. Second operand 8 states and 133 transitions. [2024-06-27 18:09:41,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 121 transitions, 1053 flow [2024-06-27 18:09:41,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 121 transitions, 999 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-27 18:09:41,535 INFO L231 Difference]: Finished difference. Result has 106 places, 99 transitions, 770 flow [2024-06-27 18:09:41,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=685, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=770, PETRI_PLACES=106, PETRI_TRANSITIONS=99} [2024-06-27 18:09:41,536 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 65 predicate places. [2024-06-27 18:09:41,536 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 99 transitions, 770 flow [2024-06-27 18:09:41,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-27 18:09:41,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:41,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:41,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 18:09:41,537 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:41,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:41,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1510692443, now seen corresponding path program 6 times [2024-06-27 18:09:41,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:41,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907671710] [2024-06-27 18:09:41,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:41,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:41,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:42,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:42,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:42,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907671710] [2024-06-27 18:09:42,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907671710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:42,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:42,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:09:42,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492508680] [2024-06-27 18:09:42,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:42,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:09:42,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:42,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:09:42,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:09:42,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:09:42,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 99 transitions, 770 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-27 18:09:42,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:42,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:09:42,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:42,670 INFO L124 PetriNetUnfolderBase]: 871/1614 cut-off events. [2024-06-27 18:09:42,670 INFO L125 PetriNetUnfolderBase]: For 12248/12248 co-relation queries the response was YES. [2024-06-27 18:09:42,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6697 conditions, 1614 events. 871/1614 cut-off events. For 12248/12248 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 9409 event pairs, 250 based on Foata normal form. 1/1566 useless extension candidates. Maximal degree in co-relation 6648. Up to 1220 conditions per place. [2024-06-27 18:09:42,680 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 94 selfloop transitions, 25 changer transitions 0/126 dead transitions. [2024-06-27 18:09:42,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 126 transitions, 1094 flow [2024-06-27 18:09:42,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:09:42,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:09:42,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-27 18:09:42,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-27 18:09:42,682 INFO L175 Difference]: Start difference. First operand has 106 places, 99 transitions, 770 flow. Second operand 8 states and 140 transitions. [2024-06-27 18:09:42,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 126 transitions, 1094 flow [2024-06-27 18:09:42,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 126 transitions, 1049 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-27 18:09:42,697 INFO L231 Difference]: Finished difference. Result has 109 places, 99 transitions, 780 flow [2024-06-27 18:09:42,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=725, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=780, PETRI_PLACES=109, PETRI_TRANSITIONS=99} [2024-06-27 18:09:42,698 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 68 predicate places. [2024-06-27 18:09:42,698 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 99 transitions, 780 flow [2024-06-27 18:09:42,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-27 18:09:42,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:42,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:42,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 18:09:42,699 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:42,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:42,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1520204514, now seen corresponding path program 1 times [2024-06-27 18:09:42,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:42,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450222878] [2024-06-27 18:09:42,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:42,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:42,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:43,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:43,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:43,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450222878] [2024-06-27 18:09:43,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450222878] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:43,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:43,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:09:43,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519889843] [2024-06-27 18:09:43,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:43,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:09:43,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:43,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:09:43,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:09:43,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:09:43,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 99 transitions, 780 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:43,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:43,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:09:43,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:44,245 INFO L124 PetriNetUnfolderBase]: 868/1669 cut-off events. [2024-06-27 18:09:44,246 INFO L125 PetriNetUnfolderBase]: For 13073/13073 co-relation queries the response was YES. [2024-06-27 18:09:44,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6781 conditions, 1669 events. 868/1669 cut-off events. For 13073/13073 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 10111 event pairs, 261 based on Foata normal form. 2/1605 useless extension candidates. Maximal degree in co-relation 6731. Up to 1334 conditions per place. [2024-06-27 18:09:44,255 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 101 selfloop transitions, 19 changer transitions 0/127 dead transitions. [2024-06-27 18:09:44,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 127 transitions, 1098 flow [2024-06-27 18:09:44,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:09:44,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:09:44,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-27 18:09:44,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4560810810810811 [2024-06-27 18:09:44,257 INFO L175 Difference]: Start difference. First operand has 109 places, 99 transitions, 780 flow. Second operand 8 states and 135 transitions. [2024-06-27 18:09:44,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 127 transitions, 1098 flow [2024-06-27 18:09:44,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 127 transitions, 1010 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-27 18:09:44,269 INFO L231 Difference]: Finished difference. Result has 111 places, 101 transitions, 759 flow [2024-06-27 18:09:44,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=759, PETRI_PLACES=111, PETRI_TRANSITIONS=101} [2024-06-27 18:09:44,270 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 70 predicate places. [2024-06-27 18:09:44,270 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 101 transitions, 759 flow [2024-06-27 18:09:44,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:44,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:44,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:44,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 18:09:44,271 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:44,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:44,271 INFO L85 PathProgramCache]: Analyzing trace with hash -420328341, now seen corresponding path program 1 times [2024-06-27 18:09:44,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:44,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657788581] [2024-06-27 18:09:44,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:44,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:44,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:44,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:44,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:44,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657788581] [2024-06-27 18:09:44,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657788581] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:44,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:44,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:09:44,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192748326] [2024-06-27 18:09:44,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:44,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:09:44,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:44,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:09:44,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:09:45,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:09:45,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 101 transitions, 759 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:45,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:45,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:09:45,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:45,542 INFO L124 PetriNetUnfolderBase]: 890/1636 cut-off events. [2024-06-27 18:09:45,542 INFO L125 PetriNetUnfolderBase]: For 13439/13439 co-relation queries the response was YES. [2024-06-27 18:09:45,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6749 conditions, 1636 events. 890/1636 cut-off events. For 13439/13439 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 9444 event pairs, 183 based on Foata normal form. 2/1584 useless extension candidates. Maximal degree in co-relation 6697. Up to 1314 conditions per place. [2024-06-27 18:09:45,549 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 124 selfloop transitions, 15 changer transitions 0/146 dead transitions. [2024-06-27 18:09:45,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 146 transitions, 1195 flow [2024-06-27 18:09:45,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:09:45,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:09:45,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-27 18:09:45,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 18:09:45,551 INFO L175 Difference]: Start difference. First operand has 111 places, 101 transitions, 759 flow. Second operand 9 states and 162 transitions. [2024-06-27 18:09:45,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 146 transitions, 1195 flow [2024-06-27 18:09:45,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 146 transitions, 1150 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-27 18:09:45,567 INFO L231 Difference]: Finished difference. Result has 115 places, 103 transitions, 771 flow [2024-06-27 18:09:45,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=714, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=771, PETRI_PLACES=115, PETRI_TRANSITIONS=103} [2024-06-27 18:09:45,572 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 74 predicate places. [2024-06-27 18:09:45,572 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 103 transitions, 771 flow [2024-06-27 18:09:45,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:45,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:45,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:45,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 18:09:45,573 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:45,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:45,573 INFO L85 PathProgramCache]: Analyzing trace with hash -416609271, now seen corresponding path program 2 times [2024-06-27 18:09:45,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:45,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569721487] [2024-06-27 18:09:45,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:45,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:45,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:46,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:46,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:46,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569721487] [2024-06-27 18:09:46,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569721487] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:46,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:46,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:09:46,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992509539] [2024-06-27 18:09:46,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:46,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:09:46,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:46,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:09:46,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:09:46,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:09:46,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 103 transitions, 771 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:46,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:46,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:09:46,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:46,755 INFO L124 PetriNetUnfolderBase]: 996/1810 cut-off events. [2024-06-27 18:09:46,755 INFO L125 PetriNetUnfolderBase]: For 17193/17193 co-relation queries the response was YES. [2024-06-27 18:09:46,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7765 conditions, 1810 events. 996/1810 cut-off events. For 17193/17193 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 10654 event pairs, 155 based on Foata normal form. 2/1752 useless extension candidates. Maximal degree in co-relation 7712. Up to 882 conditions per place. [2024-06-27 18:09:46,767 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 103 selfloop transitions, 46 changer transitions 0/156 dead transitions. [2024-06-27 18:09:46,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 156 transitions, 1409 flow [2024-06-27 18:09:46,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:09:46,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:09:46,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-27 18:09:46,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5285285285285285 [2024-06-27 18:09:46,768 INFO L175 Difference]: Start difference. First operand has 115 places, 103 transitions, 771 flow. Second operand 9 states and 176 transitions. [2024-06-27 18:09:46,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 156 transitions, 1409 flow [2024-06-27 18:09:46,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 156 transitions, 1370 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-27 18:09:46,790 INFO L231 Difference]: Finished difference. Result has 118 places, 111 transitions, 947 flow [2024-06-27 18:09:46,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=947, PETRI_PLACES=118, PETRI_TRANSITIONS=111} [2024-06-27 18:09:46,791 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 77 predicate places. [2024-06-27 18:09:46,791 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 111 transitions, 947 flow [2024-06-27 18:09:46,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:46,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:46,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:46,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 18:09:46,791 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:46,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:46,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1287074734, now seen corresponding path program 1 times [2024-06-27 18:09:46,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:46,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757051461] [2024-06-27 18:09:46,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:46,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:46,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:47,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:47,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:47,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757051461] [2024-06-27 18:09:47,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757051461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:47,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:47,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:09:47,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136442024] [2024-06-27 18:09:47,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:47,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:09:47,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:47,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:09:47,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:09:47,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:09:47,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 111 transitions, 947 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:47,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:47,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:09:47,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:48,259 INFO L124 PetriNetUnfolderBase]: 1044/1916 cut-off events. [2024-06-27 18:09:48,259 INFO L125 PetriNetUnfolderBase]: For 20698/20698 co-relation queries the response was YES. [2024-06-27 18:09:48,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8647 conditions, 1916 events. 1044/1916 cut-off events. For 20698/20698 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 11543 event pairs, 225 based on Foata normal form. 2/1848 useless extension candidates. Maximal degree in co-relation 8592. Up to 1257 conditions per place. [2024-06-27 18:09:48,270 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 111 selfloop transitions, 38 changer transitions 0/156 dead transitions. [2024-06-27 18:09:48,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 156 transitions, 1465 flow [2024-06-27 18:09:48,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:09:48,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:09:48,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-27 18:09:48,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045045045045045 [2024-06-27 18:09:48,272 INFO L175 Difference]: Start difference. First operand has 118 places, 111 transitions, 947 flow. Second operand 9 states and 168 transitions. [2024-06-27 18:09:48,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 156 transitions, 1465 flow [2024-06-27 18:09:48,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 156 transitions, 1415 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-27 18:09:48,298 INFO L231 Difference]: Finished difference. Result has 124 places, 115 transitions, 1018 flow [2024-06-27 18:09:48,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=897, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1018, PETRI_PLACES=124, PETRI_TRANSITIONS=115} [2024-06-27 18:09:48,299 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 83 predicate places. [2024-06-27 18:09:48,299 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 115 transitions, 1018 flow [2024-06-27 18:09:48,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:48,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:48,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:48,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 18:09:48,300 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:48,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:48,300 INFO L85 PathProgramCache]: Analyzing trace with hash -416603691, now seen corresponding path program 3 times [2024-06-27 18:09:48,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:48,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654201131] [2024-06-27 18:09:48,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:48,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:48,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:49,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:49,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:49,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654201131] [2024-06-27 18:09:49,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654201131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:49,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:49,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:09:49,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923819797] [2024-06-27 18:09:49,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:49,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:09:49,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:49,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:09:49,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:09:49,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:09:49,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 115 transitions, 1018 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:49,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:49,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:09:49,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:49,792 INFO L124 PetriNetUnfolderBase]: 1040/1814 cut-off events. [2024-06-27 18:09:49,793 INFO L125 PetriNetUnfolderBase]: For 20801/20801 co-relation queries the response was YES. [2024-06-27 18:09:49,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8666 conditions, 1814 events. 1040/1814 cut-off events. For 20801/20801 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 10266 event pairs, 157 based on Foata normal form. 2/1778 useless extension candidates. Maximal degree in co-relation 8609. Up to 953 conditions per place. [2024-06-27 18:09:49,803 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 105 selfloop transitions, 47 changer transitions 0/159 dead transitions. [2024-06-27 18:09:49,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 159 transitions, 1522 flow [2024-06-27 18:09:49,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:09:49,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:09:49,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-27 18:09:49,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5225225225225225 [2024-06-27 18:09:49,804 INFO L175 Difference]: Start difference. First operand has 124 places, 115 transitions, 1018 flow. Second operand 9 states and 174 transitions. [2024-06-27 18:09:49,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 159 transitions, 1522 flow [2024-06-27 18:09:49,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 159 transitions, 1466 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-27 18:09:49,834 INFO L231 Difference]: Finished difference. Result has 128 places, 115 transitions, 1061 flow [2024-06-27 18:09:49,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=962, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1061, PETRI_PLACES=128, PETRI_TRANSITIONS=115} [2024-06-27 18:09:49,835 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 87 predicate places. [2024-06-27 18:09:49,835 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 115 transitions, 1061 flow [2024-06-27 18:09:49,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:49,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:49,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:49,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 18:09:49,836 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:49,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:49,836 INFO L85 PathProgramCache]: Analyzing trace with hash -272718741, now seen corresponding path program 4 times [2024-06-27 18:09:49,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:49,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791922742] [2024-06-27 18:09:49,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:49,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:49,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:50,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:50,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:50,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791922742] [2024-06-27 18:09:50,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791922742] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:50,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:50,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:09:50,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423610306] [2024-06-27 18:09:50,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:50,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:09:50,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:50,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:09:50,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:09:50,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:09:50,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 115 transitions, 1061 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:50,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:50,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:09:50,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:51,020 INFO L124 PetriNetUnfolderBase]: 1140/2025 cut-off events. [2024-06-27 18:09:51,020 INFO L125 PetriNetUnfolderBase]: For 25981/25981 co-relation queries the response was YES. [2024-06-27 18:09:51,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9976 conditions, 2025 events. 1140/2025 cut-off events. For 25981/25981 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 11912 event pairs, 235 based on Foata normal form. 2/1968 useless extension candidates. Maximal degree in co-relation 9917. Up to 1470 conditions per place. [2024-06-27 18:09:51,034 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 123 selfloop transitions, 32 changer transitions 0/162 dead transitions. [2024-06-27 18:09:51,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 162 transitions, 1640 flow [2024-06-27 18:09:51,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:09:51,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:09:51,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-27 18:09:51,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2024-06-27 18:09:51,036 INFO L175 Difference]: Start difference. First operand has 128 places, 115 transitions, 1061 flow. Second operand 9 states and 171 transitions. [2024-06-27 18:09:51,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 162 transitions, 1640 flow [2024-06-27 18:09:51,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 162 transitions, 1531 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 18:09:51,073 INFO L231 Difference]: Finished difference. Result has 130 places, 120 transitions, 1108 flow [2024-06-27 18:09:51,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=962, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1108, PETRI_PLACES=130, PETRI_TRANSITIONS=120} [2024-06-27 18:09:51,073 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 89 predicate places. [2024-06-27 18:09:51,074 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 120 transitions, 1108 flow [2024-06-27 18:09:51,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:51,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:51,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:51,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 18:09:51,074 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:51,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:51,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1292638707, now seen corresponding path program 5 times [2024-06-27 18:09:51,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:51,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736606337] [2024-06-27 18:09:51,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:51,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:51,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:51,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:51,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:51,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736606337] [2024-06-27 18:09:51,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736606337] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:51,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:51,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:09:51,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441884991] [2024-06-27 18:09:51,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:51,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:09:51,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:51,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:09:51,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:09:51,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:09:51,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 120 transitions, 1108 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:51,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:51,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:09:51,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:52,294 INFO L124 PetriNetUnfolderBase]: 1154/2071 cut-off events. [2024-06-27 18:09:52,294 INFO L125 PetriNetUnfolderBase]: For 27215/27215 co-relation queries the response was YES. [2024-06-27 18:09:52,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10038 conditions, 2071 events. 1154/2071 cut-off events. For 27215/27215 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 12387 event pairs, 247 based on Foata normal form. 6/2010 useless extension candidates. Maximal degree in co-relation 9977. Up to 1581 conditions per place. [2024-06-27 18:09:52,308 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 129 selfloop transitions, 26 changer transitions 0/162 dead transitions. [2024-06-27 18:09:52,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 162 transitions, 1580 flow [2024-06-27 18:09:52,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:09:52,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:09:52,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-27 18:09:52,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4984984984984985 [2024-06-27 18:09:52,310 INFO L175 Difference]: Start difference. First operand has 130 places, 120 transitions, 1108 flow. Second operand 9 states and 166 transitions. [2024-06-27 18:09:52,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 162 transitions, 1580 flow [2024-06-27 18:09:52,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 162 transitions, 1528 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-27 18:09:52,353 INFO L231 Difference]: Finished difference. Result has 134 places, 122 transitions, 1150 flow [2024-06-27 18:09:52,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1058, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1150, PETRI_PLACES=134, PETRI_TRANSITIONS=122} [2024-06-27 18:09:52,354 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 93 predicate places. [2024-06-27 18:09:52,354 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 122 transitions, 1150 flow [2024-06-27 18:09:52,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:52,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:52,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:52,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 18:09:52,354 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:52,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:52,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1142152438, now seen corresponding path program 2 times [2024-06-27 18:09:52,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:52,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920931808] [2024-06-27 18:09:52,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:52,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:52,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:53,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:53,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:53,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920931808] [2024-06-27 18:09:53,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920931808] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:53,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:53,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:09:53,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339040029] [2024-06-27 18:09:53,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:53,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:09:53,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:53,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:09:53,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:09:53,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:09:53,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 122 transitions, 1150 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:53,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:53,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:09:53,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:53,788 INFO L124 PetriNetUnfolderBase]: 1202/2157 cut-off events. [2024-06-27 18:09:53,788 INFO L125 PetriNetUnfolderBase]: For 27887/27887 co-relation queries the response was YES. [2024-06-27 18:09:53,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10579 conditions, 2157 events. 1202/2157 cut-off events. For 27887/27887 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 12968 event pairs, 255 based on Foata normal form. 2/2088 useless extension candidates. Maximal degree in co-relation 10516. Up to 1664 conditions per place. [2024-06-27 18:09:53,804 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 130 selfloop transitions, 29 changer transitions 0/166 dead transitions. [2024-06-27 18:09:53,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 166 transitions, 1700 flow [2024-06-27 18:09:53,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:09:53,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:09:53,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-27 18:09:53,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015015015015015 [2024-06-27 18:09:53,807 INFO L175 Difference]: Start difference. First operand has 134 places, 122 transitions, 1150 flow. Second operand 9 states and 167 transitions. [2024-06-27 18:09:53,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 166 transitions, 1700 flow [2024-06-27 18:09:53,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 166 transitions, 1636 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-27 18:09:53,850 INFO L231 Difference]: Finished difference. Result has 136 places, 126 transitions, 1193 flow [2024-06-27 18:09:53,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1086, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1193, PETRI_PLACES=136, PETRI_TRANSITIONS=126} [2024-06-27 18:09:53,851 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 95 predicate places. [2024-06-27 18:09:53,851 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 126 transitions, 1193 flow [2024-06-27 18:09:53,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:53,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:53,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:53,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 18:09:53,852 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:53,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:53,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1142152221, now seen corresponding path program 6 times [2024-06-27 18:09:53,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:53,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048439896] [2024-06-27 18:09:53,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:53,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:53,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:54,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:54,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:54,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048439896] [2024-06-27 18:09:54,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048439896] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:54,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:54,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:09:54,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15820909] [2024-06-27 18:09:54,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:54,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:09:54,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:54,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:09:54,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:09:54,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:09:54,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 126 transitions, 1193 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:54,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:54,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:09:54,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:55,139 INFO L124 PetriNetUnfolderBase]: 1198/2127 cut-off events. [2024-06-27 18:09:55,139 INFO L125 PetriNetUnfolderBase]: For 27753/27753 co-relation queries the response was YES. [2024-06-27 18:09:55,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10437 conditions, 2127 events. 1198/2127 cut-off events. For 27753/27753 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 12666 event pairs, 236 based on Foata normal form. 2/2066 useless extension candidates. Maximal degree in co-relation 10373. Up to 1555 conditions per place. [2024-06-27 18:09:55,156 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 127 selfloop transitions, 33 changer transitions 0/167 dead transitions. [2024-06-27 18:09:55,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 167 transitions, 1649 flow [2024-06-27 18:09:55,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:09:55,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:09:55,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-27 18:09:55,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5105105105105106 [2024-06-27 18:09:55,180 INFO L175 Difference]: Start difference. First operand has 136 places, 126 transitions, 1193 flow. Second operand 9 states and 170 transitions. [2024-06-27 18:09:55,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 167 transitions, 1649 flow [2024-06-27 18:09:55,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 167 transitions, 1600 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-27 18:09:55,239 INFO L231 Difference]: Finished difference. Result has 140 places, 126 transitions, 1215 flow [2024-06-27 18:09:55,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1144, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1215, PETRI_PLACES=140, PETRI_TRANSITIONS=126} [2024-06-27 18:09:55,240 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 99 predicate places. [2024-06-27 18:09:55,240 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 126 transitions, 1215 flow [2024-06-27 18:09:55,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:55,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:55,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:55,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 18:09:55,241 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:55,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:55,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1142354248, now seen corresponding path program 3 times [2024-06-27 18:09:55,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:55,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345318833] [2024-06-27 18:09:55,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:55,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:55,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:56,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:56,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:56,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345318833] [2024-06-27 18:09:56,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345318833] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:56,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:56,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:09:56,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904226420] [2024-06-27 18:09:56,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:56,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:09:56,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:56,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:09:56,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:09:56,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:09:56,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 126 transitions, 1215 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:56,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:56,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:09:56,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:56,879 INFO L124 PetriNetUnfolderBase]: 1194/2157 cut-off events. [2024-06-27 18:09:56,879 INFO L125 PetriNetUnfolderBase]: For 27960/27960 co-relation queries the response was YES. [2024-06-27 18:09:56,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10566 conditions, 2157 events. 1194/2157 cut-off events. For 27960/27960 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 13070 event pairs, 258 based on Foata normal form. 2/2084 useless extension candidates. Maximal degree in co-relation 10500. Up to 1699 conditions per place. [2024-06-27 18:09:56,894 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 133 selfloop transitions, 25 changer transitions 0/165 dead transitions. [2024-06-27 18:09:56,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 165 transitions, 1657 flow [2024-06-27 18:09:56,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:09:56,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:09:56,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-27 18:09:56,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4924924924924925 [2024-06-27 18:09:56,899 INFO L175 Difference]: Start difference. First operand has 140 places, 126 transitions, 1215 flow. Second operand 9 states and 164 transitions. [2024-06-27 18:09:56,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 165 transitions, 1657 flow [2024-06-27 18:09:56,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 165 transitions, 1574 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 18:09:56,949 INFO L231 Difference]: Finished difference. Result has 141 places, 126 transitions, 1187 flow [2024-06-27 18:09:56,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1132, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1187, PETRI_PLACES=141, PETRI_TRANSITIONS=126} [2024-06-27 18:09:56,958 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 100 predicate places. [2024-06-27 18:09:56,959 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 126 transitions, 1187 flow [2024-06-27 18:09:56,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:56,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:56,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:56,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 18:09:56,959 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:56,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:56,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1802671735, now seen corresponding path program 7 times [2024-06-27 18:09:56,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:56,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743640873] [2024-06-27 18:09:56,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:56,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:56,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:57,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:57,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:57,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743640873] [2024-06-27 18:09:57,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743640873] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:57,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:57,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:09:57,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390331876] [2024-06-27 18:09:57,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:57,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:09:57,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:57,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:09:57,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:09:57,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:09:57,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 126 transitions, 1187 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:57,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:57,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:09:57,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:58,192 INFO L124 PetriNetUnfolderBase]: 1260/2299 cut-off events. [2024-06-27 18:09:58,192 INFO L125 PetriNetUnfolderBase]: For 31964/31964 co-relation queries the response was YES. [2024-06-27 18:09:58,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11056 conditions, 2299 events. 1260/2299 cut-off events. For 31964/31964 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 14226 event pairs, 367 based on Foata normal form. 6/2235 useless extension candidates. Maximal degree in co-relation 10989. Up to 1846 conditions per place. [2024-06-27 18:09:58,209 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 135 selfloop transitions, 19 changer transitions 0/161 dead transitions. [2024-06-27 18:09:58,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 161 transitions, 1634 flow [2024-06-27 18:09:58,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:09:58,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:09:58,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-27 18:09:58,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46546546546546547 [2024-06-27 18:09:58,210 INFO L175 Difference]: Start difference. First operand has 141 places, 126 transitions, 1187 flow. Second operand 9 states and 155 transitions. [2024-06-27 18:09:58,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 161 transitions, 1634 flow [2024-06-27 18:09:58,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 161 transitions, 1571 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 18:09:58,259 INFO L231 Difference]: Finished difference. Result has 142 places, 129 transitions, 1217 flow [2024-06-27 18:09:58,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1124, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1217, PETRI_PLACES=142, PETRI_TRANSITIONS=129} [2024-06-27 18:09:58,259 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 101 predicate places. [2024-06-27 18:09:58,260 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 129 transitions, 1217 flow [2024-06-27 18:09:58,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:58,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:58,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:58,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 18:09:58,260 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:58,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:58,261 INFO L85 PathProgramCache]: Analyzing trace with hash 910720652, now seen corresponding path program 4 times [2024-06-27 18:09:58,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:58,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209849837] [2024-06-27 18:09:58,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:58,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:58,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:59,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:59,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:59,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209849837] [2024-06-27 18:09:59,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209849837] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:59,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:59,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:09:59,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000538813] [2024-06-27 18:09:59,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:59,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:09:59,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:59,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:09:59,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:09:59,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:09:59,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 129 transitions, 1217 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:59,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:59,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:09:59,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:59,723 INFO L124 PetriNetUnfolderBase]: 1282/2358 cut-off events. [2024-06-27 18:09:59,724 INFO L125 PetriNetUnfolderBase]: For 31148/31148 co-relation queries the response was YES. [2024-06-27 18:09:59,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11265 conditions, 2358 events. 1282/2358 cut-off events. For 31148/31148 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 14716 event pairs, 383 based on Foata normal form. 2/2283 useless extension candidates. Maximal degree in co-relation 11197. Up to 1936 conditions per place. [2024-06-27 18:09:59,739 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 137 selfloop transitions, 18 changer transitions 0/162 dead transitions. [2024-06-27 18:09:59,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 162 transitions, 1643 flow [2024-06-27 18:09:59,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:09:59,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:09:59,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-27 18:09:59,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 18:09:59,742 INFO L175 Difference]: Start difference. First operand has 142 places, 129 transitions, 1217 flow. Second operand 9 states and 153 transitions. [2024-06-27 18:09:59,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 162 transitions, 1643 flow [2024-06-27 18:09:59,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 162 transitions, 1583 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-27 18:09:59,791 INFO L231 Difference]: Finished difference. Result has 144 places, 131 transitions, 1226 flow [2024-06-27 18:09:59,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1157, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1226, PETRI_PLACES=144, PETRI_TRANSITIONS=131} [2024-06-27 18:09:59,791 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 103 predicate places. [2024-06-27 18:09:59,792 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 131 transitions, 1226 flow [2024-06-27 18:09:59,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:59,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:59,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:59,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 18:09:59,792 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:59,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:59,795 INFO L85 PathProgramCache]: Analyzing trace with hash 779707943, now seen corresponding path program 8 times [2024-06-27 18:09:59,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:59,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341984125] [2024-06-27 18:09:59,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:59,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:59,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:00,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:00,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:00,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341984125] [2024-06-27 18:10:00,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341984125] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:00,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:00,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:10:00,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673506139] [2024-06-27 18:10:00,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:00,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:10:00,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:00,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:10:00,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:10:00,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:10:00,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 131 transitions, 1226 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:00,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:00,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:10:00,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:01,162 INFO L124 PetriNetUnfolderBase]: 1296/2343 cut-off events. [2024-06-27 18:10:01,163 INFO L125 PetriNetUnfolderBase]: For 32270/32270 co-relation queries the response was YES. [2024-06-27 18:10:01,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11133 conditions, 2343 events. 1296/2343 cut-off events. For 32270/32270 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 14435 event pairs, 353 based on Foata normal form. 6/2282 useless extension candidates. Maximal degree in co-relation 11064. Up to 1860 conditions per place. [2024-06-27 18:10:01,180 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 140 selfloop transitions, 22 changer transitions 0/169 dead transitions. [2024-06-27 18:10:01,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 169 transitions, 1700 flow [2024-06-27 18:10:01,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:10:01,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:10:01,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-27 18:10:01,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4804804804804805 [2024-06-27 18:10:01,182 INFO L175 Difference]: Start difference. First operand has 144 places, 131 transitions, 1226 flow. Second operand 9 states and 160 transitions. [2024-06-27 18:10:01,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 169 transitions, 1700 flow [2024-06-27 18:10:01,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 169 transitions, 1651 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-27 18:10:01,232 INFO L231 Difference]: Finished difference. Result has 146 places, 133 transitions, 1265 flow [2024-06-27 18:10:01,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1177, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1265, PETRI_PLACES=146, PETRI_TRANSITIONS=133} [2024-06-27 18:10:01,234 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 105 predicate places. [2024-06-27 18:10:01,234 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 133 transitions, 1265 flow [2024-06-27 18:10:01,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:01,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:01,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:01,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 18:10:01,235 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:01,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:01,235 INFO L85 PathProgramCache]: Analyzing trace with hash -412971640, now seen corresponding path program 5 times [2024-06-27 18:10:01,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:01,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531049669] [2024-06-27 18:10:01,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:01,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:01,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:02,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:02,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:02,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531049669] [2024-06-27 18:10:02,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531049669] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:02,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:02,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:10:02,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246590933] [2024-06-27 18:10:02,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:02,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:10:02,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:02,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:10:02,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:10:02,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:10:02,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 133 transitions, 1265 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:02,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:02,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:10:02,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:02,832 INFO L124 PetriNetUnfolderBase]: 1318/2393 cut-off events. [2024-06-27 18:10:02,832 INFO L125 PetriNetUnfolderBase]: For 31428/31428 co-relation queries the response was YES. [2024-06-27 18:10:02,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11418 conditions, 2393 events. 1318/2393 cut-off events. For 31428/31428 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 14830 event pairs, 369 based on Foata normal form. 2/2324 useless extension candidates. Maximal degree in co-relation 11348. Up to 1950 conditions per place. [2024-06-27 18:10:02,849 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 142 selfloop transitions, 21 changer transitions 0/170 dead transitions. [2024-06-27 18:10:02,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 170 transitions, 1731 flow [2024-06-27 18:10:02,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:10:02,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:10:02,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-27 18:10:02,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744744744744745 [2024-06-27 18:10:02,851 INFO L175 Difference]: Start difference. First operand has 146 places, 133 transitions, 1265 flow. Second operand 9 states and 158 transitions. [2024-06-27 18:10:02,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 170 transitions, 1731 flow [2024-06-27 18:10:02,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 170 transitions, 1649 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-27 18:10:02,903 INFO L231 Difference]: Finished difference. Result has 147 places, 135 transitions, 1262 flow [2024-06-27 18:10:02,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1183, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1262, PETRI_PLACES=147, PETRI_TRANSITIONS=135} [2024-06-27 18:10:02,904 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 106 predicate places. [2024-06-27 18:10:02,904 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 135 transitions, 1262 flow [2024-06-27 18:10:02,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:02,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:02,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:02,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 18:10:02,905 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:02,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:02,905 INFO L85 PathProgramCache]: Analyzing trace with hash -118667560, now seen corresponding path program 6 times [2024-06-27 18:10:02,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:02,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492346438] [2024-06-27 18:10:02,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:02,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:02,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:03,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:03,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:03,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492346438] [2024-06-27 18:10:03,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492346438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:03,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:03,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:10:03,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431111632] [2024-06-27 18:10:03,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:03,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:10:03,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:03,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:10:03,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:10:03,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:10:03,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 135 transitions, 1262 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:03,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:03,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:10:03,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:04,503 INFO L124 PetriNetUnfolderBase]: 1320/2397 cut-off events. [2024-06-27 18:10:04,503 INFO L125 PetriNetUnfolderBase]: For 30402/30402 co-relation queries the response was YES. [2024-06-27 18:10:04,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11116 conditions, 2397 events. 1320/2397 cut-off events. For 30402/30402 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 14941 event pairs, 394 based on Foata normal form. 2/2328 useless extension candidates. Maximal degree in co-relation 11046. Up to 2022 conditions per place. [2024-06-27 18:10:04,520 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 140 selfloop transitions, 18 changer transitions 0/165 dead transitions. [2024-06-27 18:10:04,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 165 transitions, 1672 flow [2024-06-27 18:10:04,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:10:04,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:10:04,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-27 18:10:04,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45045045045045046 [2024-06-27 18:10:04,521 INFO L175 Difference]: Start difference. First operand has 147 places, 135 transitions, 1262 flow. Second operand 9 states and 150 transitions. [2024-06-27 18:10:04,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 165 transitions, 1672 flow [2024-06-27 18:10:04,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 165 transitions, 1613 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 18:10:04,567 INFO L231 Difference]: Finished difference. Result has 149 places, 137 transitions, 1268 flow [2024-06-27 18:10:04,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1203, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1268, PETRI_PLACES=149, PETRI_TRANSITIONS=137} [2024-06-27 18:10:04,568 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 108 predicate places. [2024-06-27 18:10:04,568 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 137 transitions, 1268 flow [2024-06-27 18:10:04,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:04,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:04,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:04,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 18:10:04,569 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:04,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:04,569 INFO L85 PathProgramCache]: Analyzing trace with hash 626312485, now seen corresponding path program 9 times [2024-06-27 18:10:04,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:04,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617973481] [2024-06-27 18:10:04,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:04,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:04,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:05,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:05,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:05,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617973481] [2024-06-27 18:10:05,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617973481] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:05,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:05,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:10:05,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181918328] [2024-06-27 18:10:05,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:05,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:10:05,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:05,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:10:05,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:10:05,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:10:05,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 137 transitions, 1268 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:05,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:05,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:10:05,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:05,835 INFO L124 PetriNetUnfolderBase]: 1342/2482 cut-off events. [2024-06-27 18:10:05,836 INFO L125 PetriNetUnfolderBase]: For 31600/31600 co-relation queries the response was YES. [2024-06-27 18:10:05,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11383 conditions, 2482 events. 1342/2482 cut-off events. For 31600/31600 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 15719 event pairs, 340 based on Foata normal form. 2/2395 useless extension candidates. Maximal degree in co-relation 11312. Up to 1716 conditions per place. [2024-06-27 18:10:05,856 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 134 selfloop transitions, 35 changer transitions 0/176 dead transitions. [2024-06-27 18:10:05,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 176 transitions, 1922 flow [2024-06-27 18:10:05,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:10:05,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:10:05,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-27 18:10:05,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4894894894894895 [2024-06-27 18:10:05,858 INFO L175 Difference]: Start difference. First operand has 149 places, 137 transitions, 1268 flow. Second operand 9 states and 163 transitions. [2024-06-27 18:10:05,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 176 transitions, 1922 flow [2024-06-27 18:10:05,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 176 transitions, 1873 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-27 18:10:05,916 INFO L231 Difference]: Finished difference. Result has 151 places, 139 transitions, 1332 flow [2024-06-27 18:10:05,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1219, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1332, PETRI_PLACES=151, PETRI_TRANSITIONS=139} [2024-06-27 18:10:05,919 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 110 predicate places. [2024-06-27 18:10:05,920 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 139 transitions, 1332 flow [2024-06-27 18:10:05,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:05,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:05,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:05,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 18:10:05,925 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:05,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:05,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1505774822, now seen corresponding path program 7 times [2024-06-27 18:10:05,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:05,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192680317] [2024-06-27 18:10:05,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:05,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:05,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:06,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:06,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:06,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192680317] [2024-06-27 18:10:06,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192680317] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:06,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:06,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:10:06,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72858233] [2024-06-27 18:10:06,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:06,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:10:06,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:06,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:10:06,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:10:07,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:10:07,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 139 transitions, 1332 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:07,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:07,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:10:07,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:07,759 INFO L124 PetriNetUnfolderBase]: 1338/2449 cut-off events. [2024-06-27 18:10:07,759 INFO L125 PetriNetUnfolderBase]: For 31737/31737 co-relation queries the response was YES. [2024-06-27 18:10:07,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11427 conditions, 2449 events. 1338/2449 cut-off events. For 31737/31737 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 15331 event pairs, 355 based on Foata normal form. 2/2374 useless extension candidates. Maximal degree in co-relation 11355. Up to 1877 conditions per place. [2024-06-27 18:10:07,779 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 136 selfloop transitions, 29 changer transitions 0/172 dead transitions. [2024-06-27 18:10:07,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 172 transitions, 1766 flow [2024-06-27 18:10:07,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:10:07,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:10:07,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-27 18:10:07,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47147147147147145 [2024-06-27 18:10:07,780 INFO L175 Difference]: Start difference. First operand has 151 places, 139 transitions, 1332 flow. Second operand 9 states and 157 transitions. [2024-06-27 18:10:07,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 172 transitions, 1766 flow [2024-06-27 18:10:07,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 172 transitions, 1628 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-27 18:10:07,844 INFO L231 Difference]: Finished difference. Result has 153 places, 139 transitions, 1257 flow [2024-06-27 18:10:07,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1194, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1257, PETRI_PLACES=153, PETRI_TRANSITIONS=139} [2024-06-27 18:10:07,845 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 112 predicate places. [2024-06-27 18:10:07,845 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 139 transitions, 1257 flow [2024-06-27 18:10:07,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:07,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:07,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:07,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 18:10:07,845 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:07,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:07,846 INFO L85 PathProgramCache]: Analyzing trace with hash -413179402, now seen corresponding path program 1 times [2024-06-27 18:10:07,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:07,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718552807] [2024-06-27 18:10:07,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:07,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:07,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:08,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:08,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:08,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718552807] [2024-06-27 18:10:08,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718552807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:08,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:08,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:10:08,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988375913] [2024-06-27 18:10:08,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:08,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:10:08,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:08,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:10:08,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:10:08,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:10:08,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 139 transitions, 1257 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:08,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:08,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:10:08,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:09,200 INFO L124 PetriNetUnfolderBase]: 1336/2422 cut-off events. [2024-06-27 18:10:09,201 INFO L125 PetriNetUnfolderBase]: For 29902/29902 co-relation queries the response was YES. [2024-06-27 18:10:09,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10988 conditions, 2422 events. 1336/2422 cut-off events. For 29902/29902 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 15084 event pairs, 407 based on Foata normal form. 1/2352 useless extension candidates. Maximal degree in co-relation 10916. Up to 2078 conditions per place. [2024-06-27 18:10:09,218 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 145 selfloop transitions, 16 changer transitions 0/168 dead transitions. [2024-06-27 18:10:09,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 168 transitions, 1671 flow [2024-06-27 18:10:09,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:10:09,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:10:09,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-27 18:10:09,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44744744744744747 [2024-06-27 18:10:09,219 INFO L175 Difference]: Start difference. First operand has 153 places, 139 transitions, 1257 flow. Second operand 9 states and 149 transitions. [2024-06-27 18:10:09,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 168 transitions, 1671 flow [2024-06-27 18:10:09,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 168 transitions, 1509 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-27 18:10:09,278 INFO L231 Difference]: Finished difference. Result has 152 places, 139 transitions, 1132 flow [2024-06-27 18:10:09,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1095, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1132, PETRI_PLACES=152, PETRI_TRANSITIONS=139} [2024-06-27 18:10:09,279 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 111 predicate places. [2024-06-27 18:10:09,279 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 139 transitions, 1132 flow [2024-06-27 18:10:09,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:09,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:09,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:09,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 18:10:09,280 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:09,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:09,280 INFO L85 PathProgramCache]: Analyzing trace with hash -413179247, now seen corresponding path program 10 times [2024-06-27 18:10:09,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:09,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876087635] [2024-06-27 18:10:09,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:09,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:09,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:09,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:09,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:09,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876087635] [2024-06-27 18:10:09,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876087635] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:09,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:09,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:10:09,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041215003] [2024-06-27 18:10:09,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:09,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:10:09,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:09,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:10:09,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:10:10,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:10:10,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 139 transitions, 1132 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:10,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:10,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:10:10,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:10,532 INFO L124 PetriNetUnfolderBase]: 1332/2428 cut-off events. [2024-06-27 18:10:10,533 INFO L125 PetriNetUnfolderBase]: For 28838/28838 co-relation queries the response was YES. [2024-06-27 18:10:10,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10257 conditions, 2428 events. 1332/2428 cut-off events. For 28838/28838 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 15229 event pairs, 325 based on Foata normal form. 2/2354 useless extension candidates. Maximal degree in co-relation 10186. Up to 1706 conditions per place. [2024-06-27 18:10:10,551 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 130 selfloop transitions, 37 changer transitions 0/174 dead transitions. [2024-06-27 18:10:10,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 174 transitions, 1578 flow [2024-06-27 18:10:10,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:10:10,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:10:10,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-27 18:10:10,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48348348348348347 [2024-06-27 18:10:10,552 INFO L175 Difference]: Start difference. First operand has 152 places, 139 transitions, 1132 flow. Second operand 9 states and 161 transitions. [2024-06-27 18:10:10,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 174 transitions, 1578 flow [2024-06-27 18:10:10,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 174 transitions, 1497 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-27 18:10:10,615 INFO L231 Difference]: Finished difference. Result has 152 places, 139 transitions, 1131 flow [2024-06-27 18:10:10,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1051, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1131, PETRI_PLACES=152, PETRI_TRANSITIONS=139} [2024-06-27 18:10:10,615 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 111 predicate places. [2024-06-27 18:10:10,615 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 139 transitions, 1131 flow [2024-06-27 18:10:10,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:10,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:10,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:10,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 18:10:10,616 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:10,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:10,617 INFO L85 PathProgramCache]: Analyzing trace with hash 520854174, now seen corresponding path program 1 times [2024-06-27 18:10:10,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:10,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091923213] [2024-06-27 18:10:10,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:10,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:10,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:10,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:10,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:10,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091923213] [2024-06-27 18:10:10,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091923213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:10,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:10,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:10:10,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962793794] [2024-06-27 18:10:10,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:10,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:10:10,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:10,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:10:10,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:10:10,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 37 [2024-06-27 18:10:10,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 139 transitions, 1131 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 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) [2024-06-27 18:10:10,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:10,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 37 [2024-06-27 18:10:10,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:11,175 INFO L124 PetriNetUnfolderBase]: 1975/3468 cut-off events. [2024-06-27 18:10:11,175 INFO L125 PetriNetUnfolderBase]: For 20030/20044 co-relation queries the response was YES. [2024-06-27 18:10:11,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13846 conditions, 3468 events. 1975/3468 cut-off events. For 20030/20044 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 22381 event pairs, 570 based on Foata normal form. 4/3313 useless extension candidates. Maximal degree in co-relation 13775. Up to 1937 conditions per place. [2024-06-27 18:10:11,200 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 148 selfloop transitions, 13 changer transitions 124/335 dead transitions. [2024-06-27 18:10:11,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 335 transitions, 3252 flow [2024-06-27 18:10:11,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:10:11,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:10:11,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 174 transitions. [2024-06-27 18:10:11,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5878378378378378 [2024-06-27 18:10:11,201 INFO L175 Difference]: Start difference. First operand has 152 places, 139 transitions, 1131 flow. Second operand 8 states and 174 transitions. [2024-06-27 18:10:11,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 335 transitions, 3252 flow [2024-06-27 18:10:11,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 335 transitions, 3080 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 18:10:11,267 INFO L231 Difference]: Finished difference. Result has 157 places, 144 transitions, 1155 flow [2024-06-27 18:10:11,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1052, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1155, PETRI_PLACES=157, PETRI_TRANSITIONS=144} [2024-06-27 18:10:11,268 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 116 predicate places. [2024-06-27 18:10:11,268 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 144 transitions, 1155 flow [2024-06-27 18:10:11,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 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) [2024-06-27 18:10:11,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:11,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:11,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 18:10:11,269 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:11,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:11,269 INFO L85 PathProgramCache]: Analyzing trace with hash -382524124, now seen corresponding path program 1 times [2024-06-27 18:10:11,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:11,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099759400] [2024-06-27 18:10:11,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:11,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:11,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:12,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:12,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:12,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099759400] [2024-06-27 18:10:12,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099759400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:12,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:12,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:10:12,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263640110] [2024-06-27 18:10:12,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:12,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:10:12,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:12,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:10:12,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:10:12,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:10:12,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 144 transitions, 1155 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:12,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:12,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:10:12,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:12,915 INFO L124 PetriNetUnfolderBase]: 1494/2825 cut-off events. [2024-06-27 18:10:12,916 INFO L125 PetriNetUnfolderBase]: For 34754/34763 co-relation queries the response was YES. [2024-06-27 18:10:12,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12634 conditions, 2825 events. 1494/2825 cut-off events. For 34754/34763 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 18663 event pairs, 431 based on Foata normal form. 7/2810 useless extension candidates. Maximal degree in co-relation 12557. Up to 2223 conditions per place. [2024-06-27 18:10:12,937 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 177 selfloop transitions, 21 changer transitions 3/209 dead transitions. [2024-06-27 18:10:12,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 209 transitions, 1969 flow [2024-06-27 18:10:12,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:10:12,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:10:12,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 192 transitions. [2024-06-27 18:10:12,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47174447174447176 [2024-06-27 18:10:12,938 INFO L175 Difference]: Start difference. First operand has 157 places, 144 transitions, 1155 flow. Second operand 11 states and 192 transitions. [2024-06-27 18:10:12,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 209 transitions, 1969 flow [2024-06-27 18:10:13,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 209 transitions, 1951 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-06-27 18:10:13,014 INFO L231 Difference]: Finished difference. Result has 169 places, 158 transitions, 1368 flow [2024-06-27 18:10:13,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1147, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1368, PETRI_PLACES=169, PETRI_TRANSITIONS=158} [2024-06-27 18:10:13,014 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 128 predicate places. [2024-06-27 18:10:13,014 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 158 transitions, 1368 flow [2024-06-27 18:10:13,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:13,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:13,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:13,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 18:10:13,015 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:13,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:13,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1239840736, now seen corresponding path program 2 times [2024-06-27 18:10:13,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:13,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562631023] [2024-06-27 18:10:13,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:13,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:13,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:14,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:14,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:14,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562631023] [2024-06-27 18:10:14,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562631023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:14,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:14,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:10:14,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744105394] [2024-06-27 18:10:14,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:14,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:10:14,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:14,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:10:14,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:10:14,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:10:14,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 158 transitions, 1368 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:14,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:14,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:10:14,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:15,063 INFO L124 PetriNetUnfolderBase]: 1551/2820 cut-off events. [2024-06-27 18:10:15,063 INFO L125 PetriNetUnfolderBase]: For 40329/40336 co-relation queries the response was YES. [2024-06-27 18:10:15,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13478 conditions, 2820 events. 1551/2820 cut-off events. For 40329/40336 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 17784 event pairs, 275 based on Foata normal form. 7/2797 useless extension candidates. Maximal degree in co-relation 13394. Up to 2149 conditions per place. [2024-06-27 18:10:15,086 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 171 selfloop transitions, 29 changer transitions 0/208 dead transitions. [2024-06-27 18:10:15,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 208 transitions, 2096 flow [2024-06-27 18:10:15,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:10:15,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:10:15,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-06-27 18:10:15,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4810810810810811 [2024-06-27 18:10:15,089 INFO L175 Difference]: Start difference. First operand has 169 places, 158 transitions, 1368 flow. Second operand 10 states and 178 transitions. [2024-06-27 18:10:15,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 208 transitions, 2096 flow [2024-06-27 18:10:15,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 208 transitions, 2040 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-27 18:10:15,193 INFO L231 Difference]: Finished difference. Result has 174 places, 160 transitions, 1418 flow [2024-06-27 18:10:15,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1312, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1418, PETRI_PLACES=174, PETRI_TRANSITIONS=160} [2024-06-27 18:10:15,194 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 133 predicate places. [2024-06-27 18:10:15,194 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 160 transitions, 1418 flow [2024-06-27 18:10:15,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:15,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:15,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:15,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 18:10:15,195 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:15,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:15,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1535333552, now seen corresponding path program 3 times [2024-06-27 18:10:15,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:15,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237528856] [2024-06-27 18:10:15,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:15,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:15,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:16,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:16,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:16,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237528856] [2024-06-27 18:10:16,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237528856] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:16,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:16,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:10:16,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836370110] [2024-06-27 18:10:16,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:16,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:10:16,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:16,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:10:16,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:10:16,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:10:16,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 160 transitions, 1418 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:16,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:16,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:10:16,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:17,088 INFO L124 PetriNetUnfolderBase]: 1545/2816 cut-off events. [2024-06-27 18:10:17,088 INFO L125 PetriNetUnfolderBase]: For 39348/39355 co-relation queries the response was YES. [2024-06-27 18:10:17,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13313 conditions, 2816 events. 1545/2816 cut-off events. For 39348/39355 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 17832 event pairs, 320 based on Foata normal form. 9/2795 useless extension candidates. Maximal degree in co-relation 13229. Up to 2261 conditions per place. [2024-06-27 18:10:17,108 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 179 selfloop transitions, 31 changer transitions 0/218 dead transitions. [2024-06-27 18:10:17,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 218 transitions, 2113 flow [2024-06-27 18:10:17,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:10:17,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:10:17,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 193 transitions. [2024-06-27 18:10:17,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4742014742014742 [2024-06-27 18:10:17,109 INFO L175 Difference]: Start difference. First operand has 174 places, 160 transitions, 1418 flow. Second operand 11 states and 193 transitions. [2024-06-27 18:10:17,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 218 transitions, 2113 flow [2024-06-27 18:10:17,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 218 transitions, 2045 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-27 18:10:17,185 INFO L231 Difference]: Finished difference. Result has 178 places, 166 transitions, 1475 flow [2024-06-27 18:10:17,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1356, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1475, PETRI_PLACES=178, PETRI_TRANSITIONS=166} [2024-06-27 18:10:17,185 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 137 predicate places. [2024-06-27 18:10:17,185 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 166 transitions, 1475 flow [2024-06-27 18:10:17,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:17,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:17,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:17,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 18:10:17,186 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:17,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:17,186 INFO L85 PathProgramCache]: Analyzing trace with hash -145275610, now seen corresponding path program 1 times [2024-06-27 18:10:17,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:17,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311509341] [2024-06-27 18:10:17,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:17,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:17,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:18,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:18,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:18,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311509341] [2024-06-27 18:10:18,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311509341] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:18,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:18,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:10:18,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371609990] [2024-06-27 18:10:18,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:18,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:10:18,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:18,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:10:18,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:10:18,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:10:18,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 166 transitions, 1475 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:18,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:18,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:10:18,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:18,940 INFO L124 PetriNetUnfolderBase]: 1567/2850 cut-off events. [2024-06-27 18:10:18,940 INFO L125 PetriNetUnfolderBase]: For 36514/36521 co-relation queries the response was YES. [2024-06-27 18:10:18,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13547 conditions, 2850 events. 1567/2850 cut-off events. For 36514/36521 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 18027 event pairs, 319 based on Foata normal form. 7/2827 useless extension candidates. Maximal degree in co-relation 13462. Up to 2364 conditions per place. [2024-06-27 18:10:18,962 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 181 selfloop transitions, 25 changer transitions 0/214 dead transitions. [2024-06-27 18:10:18,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 214 transitions, 2108 flow [2024-06-27 18:10:18,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:10:18,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:10:18,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-27 18:10:18,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-27 18:10:18,964 INFO L175 Difference]: Start difference. First operand has 178 places, 166 transitions, 1475 flow. Second operand 10 states and 175 transitions. [2024-06-27 18:10:18,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 214 transitions, 2108 flow [2024-06-27 18:10:19,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 214 transitions, 2058 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-27 18:10:19,054 INFO L231 Difference]: Finished difference. Result has 182 places, 170 transitions, 1525 flow [2024-06-27 18:10:19,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1425, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1525, PETRI_PLACES=182, PETRI_TRANSITIONS=170} [2024-06-27 18:10:19,055 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 141 predicate places. [2024-06-27 18:10:19,055 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 170 transitions, 1525 flow [2024-06-27 18:10:19,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:19,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:19,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:19,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 18:10:19,056 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:19,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:19,056 INFO L85 PathProgramCache]: Analyzing trace with hash 881169442, now seen corresponding path program 2 times [2024-06-27 18:10:19,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:19,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819196150] [2024-06-27 18:10:19,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:19,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:19,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:19,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:19,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:19,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819196150] [2024-06-27 18:10:19,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819196150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:19,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:19,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:10:19,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051725451] [2024-06-27 18:10:19,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:19,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:10:19,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:19,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:10:19,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:10:19,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:10:19,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 170 transitions, 1525 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:19,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:19,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:10:19,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:20,725 INFO L124 PetriNetUnfolderBase]: 1747/3034 cut-off events. [2024-06-27 18:10:20,726 INFO L125 PetriNetUnfolderBase]: For 55757/55805 co-relation queries the response was YES. [2024-06-27 18:10:20,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15670 conditions, 3034 events. 1747/3034 cut-off events. For 55757/55805 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 18780 event pairs, 256 based on Foata normal form. 31/3028 useless extension candidates. Maximal degree in co-relation 15582. Up to 1265 conditions per place. [2024-06-27 18:10:20,750 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 155 selfloop transitions, 72 changer transitions 0/235 dead transitions. [2024-06-27 18:10:20,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 235 transitions, 2735 flow [2024-06-27 18:10:20,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:10:20,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:10:20,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 202 transitions. [2024-06-27 18:10:20,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5459459459459459 [2024-06-27 18:10:20,751 INFO L175 Difference]: Start difference. First operand has 182 places, 170 transitions, 1525 flow. Second operand 10 states and 202 transitions. [2024-06-27 18:10:20,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 235 transitions, 2735 flow [2024-06-27 18:10:20,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 235 transitions, 2683 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-27 18:10:20,885 INFO L231 Difference]: Finished difference. Result has 186 places, 181 transitions, 1787 flow [2024-06-27 18:10:20,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1473, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1787, PETRI_PLACES=186, PETRI_TRANSITIONS=181} [2024-06-27 18:10:20,886 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 145 predicate places. [2024-06-27 18:10:20,886 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 181 transitions, 1787 flow [2024-06-27 18:10:20,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:20,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:20,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:20,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 18:10:20,887 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:20,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:20,887 INFO L85 PathProgramCache]: Analyzing trace with hash 881164482, now seen corresponding path program 4 times [2024-06-27 18:10:20,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:20,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927287844] [2024-06-27 18:10:20,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:20,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:20,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:22,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:22,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:22,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927287844] [2024-06-27 18:10:22,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927287844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:22,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:22,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:10:22,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540845038] [2024-06-27 18:10:22,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:22,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:10:22,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:22,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:10:22,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:10:22,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:10:22,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 181 transitions, 1787 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:22,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:22,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:10:22,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:22,766 INFO L124 PetriNetUnfolderBase]: 1767/2985 cut-off events. [2024-06-27 18:10:22,767 INFO L125 PetriNetUnfolderBase]: For 57801/57840 co-relation queries the response was YES. [2024-06-27 18:10:22,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16522 conditions, 2985 events. 1767/2985 cut-off events. For 57801/57840 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 17982 event pairs, 305 based on Foata normal form. 19/2959 useless extension candidates. Maximal degree in co-relation 16432. Up to 2575 conditions per place. [2024-06-27 18:10:22,793 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 184 selfloop transitions, 35 changer transitions 0/227 dead transitions. [2024-06-27 18:10:22,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 227 transitions, 2457 flow [2024-06-27 18:10:22,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:10:22,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:10:22,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-06-27 18:10:22,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4756756756756757 [2024-06-27 18:10:22,794 INFO L175 Difference]: Start difference. First operand has 186 places, 181 transitions, 1787 flow. Second operand 10 states and 176 transitions. [2024-06-27 18:10:22,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 227 transitions, 2457 flow [2024-06-27 18:10:22,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 227 transitions, 2373 flow, removed 30 selfloop flow, removed 3 redundant places. [2024-06-27 18:10:22,945 INFO L231 Difference]: Finished difference. Result has 194 places, 186 transitions, 1855 flow [2024-06-27 18:10:22,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1703, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1855, PETRI_PLACES=194, PETRI_TRANSITIONS=186} [2024-06-27 18:10:22,946 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 153 predicate places. [2024-06-27 18:10:22,946 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 186 transitions, 1855 flow [2024-06-27 18:10:22,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:22,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:22,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:22,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 18:10:22,946 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:22,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:22,947 INFO L85 PathProgramCache]: Analyzing trace with hash 881342422, now seen corresponding path program 3 times [2024-06-27 18:10:22,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:22,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225626598] [2024-06-27 18:10:22,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:22,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:22,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:23,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:23,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:23,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225626598] [2024-06-27 18:10:23,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225626598] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:23,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:23,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:10:23,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851839124] [2024-06-27 18:10:23,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:23,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:10:23,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:23,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:10:23,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:10:23,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:10:23,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 186 transitions, 1855 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:23,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:23,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:10:23,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:24,694 INFO L124 PetriNetUnfolderBase]: 1811/3146 cut-off events. [2024-06-27 18:10:24,695 INFO L125 PetriNetUnfolderBase]: For 61874/61922 co-relation queries the response was YES. [2024-06-27 18:10:24,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17187 conditions, 3146 events. 1811/3146 cut-off events. For 61874/61922 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 19626 event pairs, 241 based on Foata normal form. 31/3136 useless extension candidates. Maximal degree in co-relation 17094. Up to 1321 conditions per place. [2024-06-27 18:10:24,716 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 154 selfloop transitions, 79 changer transitions 0/241 dead transitions. [2024-06-27 18:10:24,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 241 transitions, 2883 flow [2024-06-27 18:10:24,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:10:24,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:10:24,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 198 transitions. [2024-06-27 18:10:24,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5351351351351351 [2024-06-27 18:10:24,718 INFO L175 Difference]: Start difference. First operand has 194 places, 186 transitions, 1855 flow. Second operand 10 states and 198 transitions. [2024-06-27 18:10:24,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 241 transitions, 2883 flow [2024-06-27 18:10:24,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 241 transitions, 2831 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-27 18:10:24,871 INFO L231 Difference]: Finished difference. Result has 199 places, 189 transitions, 2007 flow [2024-06-27 18:10:24,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1803, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2007, PETRI_PLACES=199, PETRI_TRANSITIONS=189} [2024-06-27 18:10:24,872 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 158 predicate places. [2024-06-27 18:10:24,872 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 189 transitions, 2007 flow [2024-06-27 18:10:24,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:24,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:24,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:24,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 18:10:24,873 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:24,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:24,873 INFO L85 PathProgramCache]: Analyzing trace with hash 881348932, now seen corresponding path program 4 times [2024-06-27 18:10:24,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:24,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468791859] [2024-06-27 18:10:24,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:24,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:24,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:25,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:25,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:25,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468791859] [2024-06-27 18:10:25,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468791859] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:25,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:25,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:10:25,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825452889] [2024-06-27 18:10:25,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:25,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:10:25,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:25,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:10:25,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:10:26,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:10:26,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 189 transitions, 2007 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:26,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:26,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:10:26,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:26,853 INFO L124 PetriNetUnfolderBase]: 1807/3097 cut-off events. [2024-06-27 18:10:26,853 INFO L125 PetriNetUnfolderBase]: For 60629/60677 co-relation queries the response was YES. [2024-06-27 18:10:26,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17672 conditions, 3097 events. 1807/3097 cut-off events. For 60629/60677 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 19073 event pairs, 203 based on Foata normal form. 29/3085 useless extension candidates. Maximal degree in co-relation 17577. Up to 1871 conditions per place. [2024-06-27 18:10:26,883 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 184 selfloop transitions, 62 changer transitions 0/254 dead transitions. [2024-06-27 18:10:26,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 254 transitions, 2991 flow [2024-06-27 18:10:26,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:10:26,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:10:26,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-27 18:10:26,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5108108108108108 [2024-06-27 18:10:26,884 INFO L175 Difference]: Start difference. First operand has 199 places, 189 transitions, 2007 flow. Second operand 10 states and 189 transitions. [2024-06-27 18:10:26,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 254 transitions, 2991 flow [2024-06-27 18:10:27,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 254 transitions, 2799 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-27 18:10:27,040 INFO L231 Difference]: Finished difference. Result has 205 places, 201 transitions, 2162 flow [2024-06-27 18:10:27,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1836, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2162, PETRI_PLACES=205, PETRI_TRANSITIONS=201} [2024-06-27 18:10:27,040 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 164 predicate places. [2024-06-27 18:10:27,040 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 201 transitions, 2162 flow [2024-06-27 18:10:27,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:27,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:27,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:27,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 18:10:27,041 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:27,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:27,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1046803616, now seen corresponding path program 5 times [2024-06-27 18:10:27,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:27,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964830981] [2024-06-27 18:10:27,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:27,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:27,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:28,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:28,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:28,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964830981] [2024-06-27 18:10:28,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964830981] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:28,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:28,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:10:28,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718354940] [2024-06-27 18:10:28,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:28,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:10:28,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:28,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:10:28,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:10:28,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:10:28,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 201 transitions, 2162 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:28,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:28,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:10:28,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:28,850 INFO L124 PetriNetUnfolderBase]: 1847/3283 cut-off events. [2024-06-27 18:10:28,850 INFO L125 PetriNetUnfolderBase]: For 64322/64348 co-relation queries the response was YES. [2024-06-27 18:10:28,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18554 conditions, 3283 events. 1847/3283 cut-off events. For 64322/64348 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 21113 event pairs, 470 based on Foata normal form. 12/3244 useless extension candidates. Maximal degree in co-relation 18455. Up to 2834 conditions per place. [2024-06-27 18:10:28,879 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 203 selfloop transitions, 23 changer transitions 0/234 dead transitions. [2024-06-27 18:10:28,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 234 transitions, 2774 flow [2024-06-27 18:10:28,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:10:28,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:10:28,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-27 18:10:28,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4624624624624625 [2024-06-27 18:10:28,880 INFO L175 Difference]: Start difference. First operand has 205 places, 201 transitions, 2162 flow. Second operand 9 states and 154 transitions. [2024-06-27 18:10:28,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 234 transitions, 2774 flow [2024-06-27 18:10:29,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 234 transitions, 2708 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-27 18:10:29,059 INFO L231 Difference]: Finished difference. Result has 210 places, 202 transitions, 2170 flow [2024-06-27 18:10:29,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2096, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2170, PETRI_PLACES=210, PETRI_TRANSITIONS=202} [2024-06-27 18:10:29,059 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 169 predicate places. [2024-06-27 18:10:29,059 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 202 transitions, 2170 flow [2024-06-27 18:10:29,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:29,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:29,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:29,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 18:10:29,060 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:29,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:29,060 INFO L85 PathProgramCache]: Analyzing trace with hash 142329862, now seen corresponding path program 1 times [2024-06-27 18:10:29,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:29,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170824594] [2024-06-27 18:10:29,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:29,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:29,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:30,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:30,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:30,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170824594] [2024-06-27 18:10:30,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170824594] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:30,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:30,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:10:30,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788923500] [2024-06-27 18:10:30,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:30,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:10:30,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:30,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:10:30,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:10:30,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:10:30,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 202 transitions, 2170 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:30,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:30,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:10:30,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:30,876 INFO L124 PetriNetUnfolderBase]: 1872/3343 cut-off events. [2024-06-27 18:10:30,876 INFO L125 PetriNetUnfolderBase]: For 66042/66100 co-relation queries the response was YES. [2024-06-27 18:10:30,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18707 conditions, 3343 events. 1872/3343 cut-off events. For 66042/66100 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 21677 event pairs, 357 based on Foata normal form. 21/3310 useless extension candidates. Maximal degree in co-relation 18606. Up to 2772 conditions per place. [2024-06-27 18:10:30,908 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 206 selfloop transitions, 31 changer transitions 0/245 dead transitions. [2024-06-27 18:10:30,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 245 transitions, 2849 flow [2024-06-27 18:10:30,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:10:30,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:10:30,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-27 18:10:30,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4804804804804805 [2024-06-27 18:10:30,910 INFO L175 Difference]: Start difference. First operand has 210 places, 202 transitions, 2170 flow. Second operand 9 states and 160 transitions. [2024-06-27 18:10:30,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 245 transitions, 2849 flow [2024-06-27 18:10:31,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 245 transitions, 2791 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-27 18:10:31,082 INFO L231 Difference]: Finished difference. Result has 215 places, 210 transitions, 2281 flow [2024-06-27 18:10:31,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2112, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2281, PETRI_PLACES=215, PETRI_TRANSITIONS=210} [2024-06-27 18:10:31,083 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 174 predicate places. [2024-06-27 18:10:31,083 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 210 transitions, 2281 flow [2024-06-27 18:10:31,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:31,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:31,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:31,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 18:10:31,083 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:31,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:31,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1046808576, now seen corresponding path program 5 times [2024-06-27 18:10:31,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:31,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815929283] [2024-06-27 18:10:31,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:31,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:31,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:31,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:31,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:31,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815929283] [2024-06-27 18:10:31,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815929283] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:31,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:31,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:10:31,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115310241] [2024-06-27 18:10:31,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:31,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:10:31,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:31,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:10:31,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:10:31,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:10:31,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 210 transitions, 2281 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:31,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:31,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:10:31,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:32,828 INFO L124 PetriNetUnfolderBase]: 2000/3529 cut-off events. [2024-06-27 18:10:32,828 INFO L125 PetriNetUnfolderBase]: For 82093/82140 co-relation queries the response was YES. [2024-06-27 18:10:32,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20762 conditions, 3529 events. 2000/3529 cut-off events. For 82093/82140 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 22836 event pairs, 349 based on Foata normal form. 31/3519 useless extension candidates. Maximal degree in co-relation 20657. Up to 2594 conditions per place. [2024-06-27 18:10:32,865 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 209 selfloop transitions, 50 changer transitions 0/267 dead transitions. [2024-06-27 18:10:32,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 267 transitions, 3402 flow [2024-06-27 18:10:32,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:10:32,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:10:32,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-06-27 18:10:32,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.518918918918919 [2024-06-27 18:10:32,866 INFO L175 Difference]: Start difference. First operand has 215 places, 210 transitions, 2281 flow. Second operand 10 states and 192 transitions. [2024-06-27 18:10:32,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 267 transitions, 3402 flow [2024-06-27 18:10:33,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 267 transitions, 3361 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-27 18:10:33,116 INFO L231 Difference]: Finished difference. Result has 221 places, 219 transitions, 2516 flow [2024-06-27 18:10:33,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2240, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2516, PETRI_PLACES=221, PETRI_TRANSITIONS=219} [2024-06-27 18:10:33,117 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 180 predicate places. [2024-06-27 18:10:33,117 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 219 transitions, 2516 flow [2024-06-27 18:10:33,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:33,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:33,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:33,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 18:10:33,118 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:33,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:33,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1247853878, now seen corresponding path program 6 times [2024-06-27 18:10:33,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:33,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942528874] [2024-06-27 18:10:33,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:33,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:33,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:34,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:34,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:34,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942528874] [2024-06-27 18:10:34,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942528874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:34,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:34,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:10:34,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544078768] [2024-06-27 18:10:34,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:34,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:10:34,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:34,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:10:34,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:10:34,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:10:34,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 219 transitions, 2516 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:34,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:34,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:10:34,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:34,973 INFO L124 PetriNetUnfolderBase]: 2096/3674 cut-off events. [2024-06-27 18:10:34,974 INFO L125 PetriNetUnfolderBase]: For 94027/94070 co-relation queries the response was YES. [2024-06-27 18:10:34,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22393 conditions, 3674 events. 2096/3674 cut-off events. For 94027/94070 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 23889 event pairs, 388 based on Foata normal form. 27/3653 useless extension candidates. Maximal degree in co-relation 22286. Up to 2912 conditions per place. [2024-06-27 18:10:35,012 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 222 selfloop transitions, 40 changer transitions 0/270 dead transitions. [2024-06-27 18:10:35,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 270 transitions, 3494 flow [2024-06-27 18:10:35,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:10:35,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:10:35,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-27 18:10:35,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4972972972972973 [2024-06-27 18:10:35,014 INFO L175 Difference]: Start difference. First operand has 221 places, 219 transitions, 2516 flow. Second operand 10 states and 184 transitions. [2024-06-27 18:10:35,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 270 transitions, 3494 flow [2024-06-27 18:10:35,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 270 transitions, 3372 flow, removed 40 selfloop flow, removed 5 redundant places. [2024-06-27 18:10:35,243 INFO L231 Difference]: Finished difference. Result has 226 places, 226 transitions, 2630 flow [2024-06-27 18:10:35,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2410, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2630, PETRI_PLACES=226, PETRI_TRANSITIONS=226} [2024-06-27 18:10:35,244 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 185 predicate places. [2024-06-27 18:10:35,244 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 226 transitions, 2630 flow [2024-06-27 18:10:35,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:35,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:35,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:35,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 18:10:35,245 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:35,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:35,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1046981556, now seen corresponding path program 7 times [2024-06-27 18:10:35,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:35,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639098776] [2024-06-27 18:10:35,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:35,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:35,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:36,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:36,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:36,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639098776] [2024-06-27 18:10:36,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639098776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:36,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:36,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:10:36,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622640715] [2024-06-27 18:10:36,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:36,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:10:36,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:36,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:10:36,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:10:36,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:10:36,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 226 transitions, 2630 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:36,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:36,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:10:36,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:37,098 INFO L124 PetriNetUnfolderBase]: 2140/3826 cut-off events. [2024-06-27 18:10:37,098 INFO L125 PetriNetUnfolderBase]: For 96924/96972 co-relation queries the response was YES. [2024-06-27 18:10:37,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23177 conditions, 3826 events. 2140/3826 cut-off events. For 96924/96972 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 25500 event pairs, 419 based on Foata normal form. 27/3811 useless extension candidates. Maximal degree in co-relation 23068. Up to 2670 conditions per place. [2024-06-27 18:10:37,141 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 215 selfloop transitions, 57 changer transitions 0/280 dead transitions. [2024-06-27 18:10:37,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 280 transitions, 3845 flow [2024-06-27 18:10:37,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:10:37,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:10:37,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 195 transitions. [2024-06-27 18:10:37,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.527027027027027 [2024-06-27 18:10:37,142 INFO L175 Difference]: Start difference. First operand has 226 places, 226 transitions, 2630 flow. Second operand 10 states and 195 transitions. [2024-06-27 18:10:37,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 280 transitions, 3845 flow [2024-06-27 18:10:37,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 280 transitions, 3760 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-27 18:10:37,407 INFO L231 Difference]: Finished difference. Result has 230 places, 230 transitions, 2748 flow [2024-06-27 18:10:37,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2545, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2748, PETRI_PLACES=230, PETRI_TRANSITIONS=230} [2024-06-27 18:10:37,408 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 189 predicate places. [2024-06-27 18:10:37,408 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 230 transitions, 2748 flow [2024-06-27 18:10:37,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:37,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:37,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:37,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 18:10:37,409 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:37,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:37,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1046988066, now seen corresponding path program 8 times [2024-06-27 18:10:37,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:37,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082886902] [2024-06-27 18:10:37,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:37,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:37,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:38,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:38,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:38,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082886902] [2024-06-27 18:10:38,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082886902] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:38,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:38,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:10:38,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517859984] [2024-06-27 18:10:38,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:38,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:10:38,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:38,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:10:38,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:10:38,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:10:38,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 230 transitions, 2748 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:38,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:38,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:10:38,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:39,510 INFO L124 PetriNetUnfolderBase]: 2136/3764 cut-off events. [2024-06-27 18:10:39,510 INFO L125 PetriNetUnfolderBase]: For 96079/96138 co-relation queries the response was YES. [2024-06-27 18:10:39,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23268 conditions, 3764 events. 2136/3764 cut-off events. For 96079/96138 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 24630 event pairs, 359 based on Foata normal form. 37/3757 useless extension candidates. Maximal degree in co-relation 23157. Up to 2932 conditions per place. [2024-06-27 18:10:39,551 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 226 selfloop transitions, 46 changer transitions 0/280 dead transitions. [2024-06-27 18:10:39,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 280 transitions, 3696 flow [2024-06-27 18:10:39,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:10:39,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:10:39,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-27 18:10:39,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054054054054054 [2024-06-27 18:10:39,552 INFO L175 Difference]: Start difference. First operand has 230 places, 230 transitions, 2748 flow. Second operand 10 states and 187 transitions. [2024-06-27 18:10:39,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 280 transitions, 3696 flow [2024-06-27 18:10:39,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 280 transitions, 3485 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-27 18:10:39,920 INFO L231 Difference]: Finished difference. Result has 232 places, 235 transitions, 2737 flow [2024-06-27 18:10:39,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2537, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2737, PETRI_PLACES=232, PETRI_TRANSITIONS=235} [2024-06-27 18:10:39,921 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 191 predicate places. [2024-06-27 18:10:39,921 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 235 transitions, 2737 flow [2024-06-27 18:10:39,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:39,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:39,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:39,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 18:10:39,922 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:39,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:39,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1053244176, now seen corresponding path program 9 times [2024-06-27 18:10:39,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:39,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844195048] [2024-06-27 18:10:39,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:39,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:39,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:40,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:40,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:40,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844195048] [2024-06-27 18:10:40,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844195048] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:40,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:40,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:10:40,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869259825] [2024-06-27 18:10:40,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:40,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:10:40,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:40,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:10:40,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:10:40,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:10:40,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 235 transitions, 2737 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:40,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:40,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:10:40,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:41,919 INFO L124 PetriNetUnfolderBase]: 2132/3750 cut-off events. [2024-06-27 18:10:41,919 INFO L125 PetriNetUnfolderBase]: For 93077/93126 co-relation queries the response was YES. [2024-06-27 18:10:41,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22707 conditions, 3750 events. 2132/3750 cut-off events. For 93077/93126 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 24508 event pairs, 400 based on Foata normal form. 25/3725 useless extension candidates. Maximal degree in co-relation 22595. Up to 3077 conditions per place. [2024-06-27 18:10:41,957 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 235 selfloop transitions, 36 changer transitions 0/279 dead transitions. [2024-06-27 18:10:41,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 279 transitions, 3499 flow [2024-06-27 18:10:41,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:10:41,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:10:41,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-27 18:10:41,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4918918918918919 [2024-06-27 18:10:41,959 INFO L175 Difference]: Start difference. First operand has 232 places, 235 transitions, 2737 flow. Second operand 10 states and 182 transitions. [2024-06-27 18:10:41,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 279 transitions, 3499 flow [2024-06-27 18:10:42,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 279 transitions, 3380 flow, removed 44 selfloop flow, removed 4 redundant places. [2024-06-27 18:10:42,261 INFO L231 Difference]: Finished difference. Result has 239 places, 237 transitions, 2740 flow [2024-06-27 18:10:42,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2632, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2740, PETRI_PLACES=239, PETRI_TRANSITIONS=237} [2024-06-27 18:10:42,262 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 198 predicate places. [2024-06-27 18:10:42,262 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 237 transitions, 2740 flow [2024-06-27 18:10:42,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:42,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:42,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:42,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 18:10:42,262 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:42,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:42,263 INFO L85 PathProgramCache]: Analyzing trace with hash -275137662, now seen corresponding path program 6 times [2024-06-27 18:10:42,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:42,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175515824] [2024-06-27 18:10:42,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:42,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:42,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:43,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:43,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:43,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175515824] [2024-06-27 18:10:43,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175515824] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:43,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:43,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:10:43,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405460010] [2024-06-27 18:10:43,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:43,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:10:43,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:43,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:10:43,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:10:43,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:10:43,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 237 transitions, 2740 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:43,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:43,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:10:43,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:44,169 INFO L124 PetriNetUnfolderBase]: 2137/3696 cut-off events. [2024-06-27 18:10:44,170 INFO L125 PetriNetUnfolderBase]: For 89119/89172 co-relation queries the response was YES. [2024-06-27 18:10:44,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22388 conditions, 3696 events. 2137/3696 cut-off events. For 89119/89172 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 23727 event pairs, 582 based on Foata normal form. 17/3638 useless extension candidates. Maximal degree in co-relation 22273. Up to 3315 conditions per place. [2024-06-27 18:10:44,206 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 243 selfloop transitions, 16 changer transitions 0/267 dead transitions. [2024-06-27 18:10:44,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 267 transitions, 3402 flow [2024-06-27 18:10:44,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:10:44,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:10:44,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-27 18:10:44,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44744744744744747 [2024-06-27 18:10:44,208 INFO L175 Difference]: Start difference. First operand has 239 places, 237 transitions, 2740 flow. Second operand 9 states and 149 transitions. [2024-06-27 18:10:44,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 267 transitions, 3402 flow [2024-06-27 18:10:44,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 267 transitions, 3336 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 18:10:44,473 INFO L231 Difference]: Finished difference. Result has 242 places, 238 transitions, 2736 flow [2024-06-27 18:10:44,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2674, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2736, PETRI_PLACES=242, PETRI_TRANSITIONS=238} [2024-06-27 18:10:44,473 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 201 predicate places. [2024-06-27 18:10:44,473 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 238 transitions, 2736 flow [2024-06-27 18:10:44,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:44,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:44,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:44,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 18:10:44,474 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:44,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:44,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1822669274, now seen corresponding path program 2 times [2024-06-27 18:10:44,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:44,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548462635] [2024-06-27 18:10:44,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:44,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:44,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:45,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:45,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:45,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548462635] [2024-06-27 18:10:45,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548462635] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:45,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:45,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:10:45,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479329680] [2024-06-27 18:10:45,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:45,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:10:45,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:45,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:10:45,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:10:45,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:10:45,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 238 transitions, 2736 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:45,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:45,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:10:45,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:46,394 INFO L124 PetriNetUnfolderBase]: 2157/3732 cut-off events. [2024-06-27 18:10:46,394 INFO L125 PetriNetUnfolderBase]: For 92612/92661 co-relation queries the response was YES. [2024-06-27 18:10:46,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22500 conditions, 3732 events. 2157/3732 cut-off events. For 92612/92661 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 24065 event pairs, 580 based on Foata normal form. 19/3672 useless extension candidates. Maximal degree in co-relation 22384. Up to 3331 conditions per place. [2024-06-27 18:10:46,432 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 237 selfloop transitions, 21 changer transitions 0/266 dead transitions. [2024-06-27 18:10:46,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 266 transitions, 3366 flow [2024-06-27 18:10:46,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:10:46,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:10:46,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-27 18:10:46,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44744744744744747 [2024-06-27 18:10:46,434 INFO L175 Difference]: Start difference. First operand has 242 places, 238 transitions, 2736 flow. Second operand 9 states and 149 transitions. [2024-06-27 18:10:46,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 266 transitions, 3366 flow [2024-06-27 18:10:46,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 266 transitions, 3320 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-27 18:10:46,732 INFO L231 Difference]: Finished difference. Result has 244 places, 239 transitions, 2757 flow [2024-06-27 18:10:46,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2690, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2757, PETRI_PLACES=244, PETRI_TRANSITIONS=239} [2024-06-27 18:10:46,733 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 203 predicate places. [2024-06-27 18:10:46,733 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 239 transitions, 2757 flow [2024-06-27 18:10:46,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:46,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:46,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:46,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 18:10:46,734 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:46,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:46,734 INFO L85 PathProgramCache]: Analyzing trace with hash 76346304, now seen corresponding path program 10 times [2024-06-27 18:10:46,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:46,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353313244] [2024-06-27 18:10:46,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:46,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:46,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:47,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:47,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:47,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353313244] [2024-06-27 18:10:47,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353313244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:47,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:47,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:10:47,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628392350] [2024-06-27 18:10:47,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:47,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:10:47,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:47,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:10:47,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:10:47,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:10:47,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 239 transitions, 2757 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:47,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:47,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:10:47,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:48,822 INFO L124 PetriNetUnfolderBase]: 2179/3770 cut-off events. [2024-06-27 18:10:48,822 INFO L125 PetriNetUnfolderBase]: For 95744/95853 co-relation queries the response was YES. [2024-06-27 18:10:48,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22781 conditions, 3770 events. 2179/3770 cut-off events. For 95744/95853 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 24293 event pairs, 489 based on Foata normal form. 49/3750 useless extension candidates. Maximal degree in co-relation 22664. Up to 2994 conditions per place. [2024-06-27 18:10:48,866 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 240 selfloop transitions, 37 changer transitions 0/285 dead transitions. [2024-06-27 18:10:48,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 285 transitions, 3700 flow [2024-06-27 18:10:48,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:10:48,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:10:48,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2024-06-27 18:10:48,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4783783783783784 [2024-06-27 18:10:48,867 INFO L175 Difference]: Start difference. First operand has 244 places, 239 transitions, 2757 flow. Second operand 10 states and 177 transitions. [2024-06-27 18:10:48,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 285 transitions, 3700 flow [2024-06-27 18:10:49,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 285 transitions, 3651 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 18:10:49,188 INFO L231 Difference]: Finished difference. Result has 248 places, 243 transitions, 2873 flow [2024-06-27 18:10:49,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2708, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2873, PETRI_PLACES=248, PETRI_TRANSITIONS=243} [2024-06-27 18:10:49,189 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 207 predicate places. [2024-06-27 18:10:49,189 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 243 transitions, 2873 flow [2024-06-27 18:10:49,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:49,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:49,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:49,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 18:10:49,190 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:49,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:49,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1832190436, now seen corresponding path program 3 times [2024-06-27 18:10:49,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:49,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694341717] [2024-06-27 18:10:49,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:49,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:49,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:49,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:49,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:49,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694341717] [2024-06-27 18:10:49,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694341717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:49,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:49,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:10:50,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806606308] [2024-06-27 18:10:50,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:50,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:10:50,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:50,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:10:50,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:10:50,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:10:50,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 243 transitions, 2873 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:50,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:50,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:10:50,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:50,850 INFO L124 PetriNetUnfolderBase]: 2199/3782 cut-off events. [2024-06-27 18:10:50,850 INFO L125 PetriNetUnfolderBase]: For 97917/97980 co-relation queries the response was YES. [2024-06-27 18:10:50,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23196 conditions, 3782 events. 2199/3782 cut-off events. For 97917/97980 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 24295 event pairs, 598 based on Foata normal form. 21/3718 useless extension candidates. Maximal degree in co-relation 23077. Up to 3415 conditions per place. [2024-06-27 18:10:50,893 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 251 selfloop transitions, 16 changer transitions 0/275 dead transitions. [2024-06-27 18:10:50,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 275 transitions, 3566 flow [2024-06-27 18:10:50,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:10:50,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:10:50,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-27 18:10:50,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44744744744744747 [2024-06-27 18:10:50,894 INFO L175 Difference]: Start difference. First operand has 248 places, 243 transitions, 2873 flow. Second operand 9 states and 149 transitions. [2024-06-27 18:10:50,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 275 transitions, 3566 flow [2024-06-27 18:10:51,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 275 transitions, 3364 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-06-27 18:10:51,245 INFO L231 Difference]: Finished difference. Result has 250 places, 246 transitions, 2761 flow [2024-06-27 18:10:51,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2675, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2761, PETRI_PLACES=250, PETRI_TRANSITIONS=246} [2024-06-27 18:10:51,245 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 209 predicate places. [2024-06-27 18:10:51,245 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 246 transitions, 2761 flow [2024-06-27 18:10:51,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:51,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:51,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:51,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 18:10:51,246 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:51,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:51,246 INFO L85 PathProgramCache]: Analyzing trace with hash 304426944, now seen corresponding path program 11 times [2024-06-27 18:10:51,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:51,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437652154] [2024-06-27 18:10:51,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:51,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:51,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:52,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:52,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:52,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437652154] [2024-06-27 18:10:52,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437652154] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:52,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:52,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:10:52,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124951884] [2024-06-27 18:10:52,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:52,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:10:52,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:52,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:10:52,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:10:52,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:10:52,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 246 transitions, 2761 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:52,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:52,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:10:52,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:53,256 INFO L124 PetriNetUnfolderBase]: 2247/3894 cut-off events. [2024-06-27 18:10:53,257 INFO L125 PetriNetUnfolderBase]: For 101972/102047 co-relation queries the response was YES. [2024-06-27 18:10:53,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23152 conditions, 3894 events. 2247/3894 cut-off events. For 101972/102047 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 25331 event pairs, 564 based on Foata normal form. 27/3841 useless extension candidates. Maximal degree in co-relation 23032. Up to 3358 conditions per place. [2024-06-27 18:10:53,299 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 256 selfloop transitions, 25 changer transitions 0/289 dead transitions. [2024-06-27 18:10:53,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 289 transitions, 3694 flow [2024-06-27 18:10:53,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:10:53,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:10:53,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-27 18:10:53,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46756756756756757 [2024-06-27 18:10:53,300 INFO L175 Difference]: Start difference. First operand has 250 places, 246 transitions, 2761 flow. Second operand 10 states and 173 transitions. [2024-06-27 18:10:53,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 289 transitions, 3694 flow [2024-06-27 18:10:53,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 289 transitions, 3650 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 18:10:53,687 INFO L231 Difference]: Finished difference. Result has 255 places, 252 transitions, 2884 flow [2024-06-27 18:10:53,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2717, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2884, PETRI_PLACES=255, PETRI_TRANSITIONS=252} [2024-06-27 18:10:53,687 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 214 predicate places. [2024-06-27 18:10:53,687 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 252 transitions, 2884 flow [2024-06-27 18:10:53,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:53,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:53,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:53,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 18:10:53,688 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:53,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:53,688 INFO L85 PathProgramCache]: Analyzing trace with hash 627680800, now seen corresponding path program 4 times [2024-06-27 18:10:53,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:53,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649556643] [2024-06-27 18:10:53,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:53,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:53,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:54,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:54,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:54,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649556643] [2024-06-27 18:10:54,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649556643] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:54,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:54,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:10:54,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064456530] [2024-06-27 18:10:54,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:54,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:10:54,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:54,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:10:54,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:10:54,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:10:54,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 252 transitions, 2884 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:54,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:54,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:10:54,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:55,488 INFO L124 PetriNetUnfolderBase]: 2267/3900 cut-off events. [2024-06-27 18:10:55,489 INFO L125 PetriNetUnfolderBase]: For 105841/105932 co-relation queries the response was YES. [2024-06-27 18:10:55,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23480 conditions, 3900 events. 2267/3900 cut-off events. For 105841/105932 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 25180 event pairs, 609 based on Foata normal form. 25/3843 useless extension candidates. Maximal degree in co-relation 23358. Up to 3522 conditions per place. [2024-06-27 18:10:55,532 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 253 selfloop transitions, 19 changer transitions 0/280 dead transitions. [2024-06-27 18:10:55,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 280 transitions, 3544 flow [2024-06-27 18:10:55,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:10:55,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:10:55,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-27 18:10:55,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44144144144144143 [2024-06-27 18:10:55,533 INFO L175 Difference]: Start difference. First operand has 255 places, 252 transitions, 2884 flow. Second operand 9 states and 147 transitions. [2024-06-27 18:10:55,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 280 transitions, 3544 flow [2024-06-27 18:10:55,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 280 transitions, 3484 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-27 18:10:55,910 INFO L231 Difference]: Finished difference. Result has 260 places, 255 transitions, 2913 flow [2024-06-27 18:10:55,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2824, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2913, PETRI_PLACES=260, PETRI_TRANSITIONS=255} [2024-06-27 18:10:55,911 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 219 predicate places. [2024-06-27 18:10:55,911 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 255 transitions, 2913 flow [2024-06-27 18:10:55,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:55,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:55,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:55,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 18:10:55,912 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:55,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:55,912 INFO L85 PathProgramCache]: Analyzing trace with hash -2059148372, now seen corresponding path program 12 times [2024-06-27 18:10:55,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:55,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036624952] [2024-06-27 18:10:55,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:55,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:55,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:56,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:56,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:56,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036624952] [2024-06-27 18:10:56,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036624952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:56,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:56,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:10:56,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883753975] [2024-06-27 18:10:56,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:56,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:10:56,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:56,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:10:56,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:10:57,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:10:57,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 255 transitions, 2913 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:57,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:57,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:10:57,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:58,084 INFO L124 PetriNetUnfolderBase]: 2315/3990 cut-off events. [2024-06-27 18:10:58,084 INFO L125 PetriNetUnfolderBase]: For 114880/114989 co-relation queries the response was YES. [2024-06-27 18:10:58,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24296 conditions, 3990 events. 2315/3990 cut-off events. For 114880/114989 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 25924 event pairs, 525 based on Foata normal form. 49/3964 useless extension candidates. Maximal degree in co-relation 24171. Up to 3136 conditions per place. [2024-06-27 18:10:58,126 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 251 selfloop transitions, 43 changer transitions 0/302 dead transitions. [2024-06-27 18:10:58,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 302 transitions, 4033 flow [2024-06-27 18:10:58,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:10:58,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:10:58,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-27 18:10:58,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4891891891891892 [2024-06-27 18:10:58,128 INFO L175 Difference]: Start difference. First operand has 260 places, 255 transitions, 2913 flow. Second operand 10 states and 181 transitions. [2024-06-27 18:10:58,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 302 transitions, 4033 flow [2024-06-27 18:10:58,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 302 transitions, 3978 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-27 18:10:58,496 INFO L231 Difference]: Finished difference. Result has 265 places, 260 transitions, 3044 flow [2024-06-27 18:10:58,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2858, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3044, PETRI_PLACES=265, PETRI_TRANSITIONS=260} [2024-06-27 18:10:58,496 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 224 predicate places. [2024-06-27 18:10:58,496 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 260 transitions, 3044 flow [2024-06-27 18:10:58,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:58,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:58,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:58,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 18:10:58,497 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:58,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:58,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1832436514, now seen corresponding path program 13 times [2024-06-27 18:10:58,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:58,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843119732] [2024-06-27 18:10:58,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:58,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:58,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:59,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:59,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:59,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843119732] [2024-06-27 18:10:59,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843119732] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:59,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:59,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:10:59,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329987743] [2024-06-27 18:10:59,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:59,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:10:59,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:59,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:10:59,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:10:59,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:10:59,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 260 transitions, 3044 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:59,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:59,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:10:59,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:00,456 INFO L124 PetriNetUnfolderBase]: 2311/3991 cut-off events. [2024-06-27 18:11:00,457 INFO L125 PetriNetUnfolderBase]: For 112811/112888 co-relation queries the response was YES. [2024-06-27 18:11:00,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24386 conditions, 3991 events. 2311/3991 cut-off events. For 112811/112888 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 25970 event pairs, 587 based on Foata normal form. 27/3937 useless extension candidates. Maximal degree in co-relation 24259. Up to 3461 conditions per place. [2024-06-27 18:11:00,497 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 263 selfloop transitions, 25 changer transitions 0/296 dead transitions. [2024-06-27 18:11:00,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 296 transitions, 3774 flow [2024-06-27 18:11:00,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:11:00,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:11:00,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-27 18:11:00,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46216216216216216 [2024-06-27 18:11:00,499 INFO L175 Difference]: Start difference. First operand has 265 places, 260 transitions, 3044 flow. Second operand 10 states and 171 transitions. [2024-06-27 18:11:00,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 296 transitions, 3774 flow [2024-06-27 18:11:00,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 296 transitions, 3662 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-27 18:11:00,907 INFO L231 Difference]: Finished difference. Result has 269 places, 260 transitions, 2987 flow [2024-06-27 18:11:00,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2932, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2987, PETRI_PLACES=269, PETRI_TRANSITIONS=260} [2024-06-27 18:11:00,907 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 228 predicate places. [2024-06-27 18:11:00,907 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 260 transitions, 2987 flow [2024-06-27 18:11:00,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:00,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:00,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:00,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 18:11:00,908 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:11:00,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:00,908 INFO L85 PathProgramCache]: Analyzing trace with hash -2059141862, now seen corresponding path program 14 times [2024-06-27 18:11:00,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:00,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805693635] [2024-06-27 18:11:00,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:00,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:00,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:01,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:01,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:01,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805693635] [2024-06-27 18:11:01,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805693635] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:01,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:01,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:11:01,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741738180] [2024-06-27 18:11:01,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:01,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:11:01,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:01,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:11:01,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:11:01,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:11:01,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 260 transitions, 2987 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:01,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:01,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:11:01,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:03,128 INFO L124 PetriNetUnfolderBase]: 2359/4120 cut-off events. [2024-06-27 18:11:03,129 INFO L125 PetriNetUnfolderBase]: For 120244/120329 co-relation queries the response was YES. [2024-06-27 18:11:03,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24796 conditions, 4120 events. 2359/4120 cut-off events. For 120244/120329 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 27241 event pairs, 532 based on Foata normal form. 35/4085 useless extension candidates. Maximal degree in co-relation 24668. Up to 2938 conditions per place. [2024-06-27 18:11:03,178 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 245 selfloop transitions, 54 changer transitions 0/307 dead transitions. [2024-06-27 18:11:03,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 307 transitions, 4258 flow [2024-06-27 18:11:03,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:11:03,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:11:03,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-27 18:11:03,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:11:03,180 INFO L175 Difference]: Start difference. First operand has 269 places, 260 transitions, 2987 flow. Second operand 10 states and 185 transitions. [2024-06-27 18:11:03,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 307 transitions, 4258 flow [2024-06-27 18:11:03,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 307 transitions, 4180 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-27 18:11:03,685 INFO L231 Difference]: Finished difference. Result has 271 places, 265 transitions, 3119 flow [2024-06-27 18:11:03,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2921, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3119, PETRI_PLACES=271, PETRI_TRANSITIONS=265} [2024-06-27 18:11:03,700 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 230 predicate places. [2024-06-27 18:11:03,700 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 265 transitions, 3119 flow [2024-06-27 18:11:03,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:03,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:03,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:03,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 18:11:03,701 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:11:03,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:03,701 INFO L85 PathProgramCache]: Analyzing trace with hash -559370318, now seen corresponding path program 15 times [2024-06-27 18:11:03,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:03,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020755371] [2024-06-27 18:11:03,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:03,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:03,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:05,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:05,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:05,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020755371] [2024-06-27 18:11:05,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020755371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:05,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:05,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:11:05,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605377256] [2024-06-27 18:11:05,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:05,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:11:05,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:05,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:11:05,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:11:05,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:11:05,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 265 transitions, 3119 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:05,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:05,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:11:05,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:06,225 INFO L124 PetriNetUnfolderBase]: 2381/4076 cut-off events. [2024-06-27 18:11:06,225 INFO L125 PetriNetUnfolderBase]: For 123979/124054 co-relation queries the response was YES. [2024-06-27 18:11:06,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25117 conditions, 4076 events. 2381/4076 cut-off events. For 123979/124054 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 26399 event pairs, 593 based on Foata normal form. 25/4018 useless extension candidates. Maximal degree in co-relation 24988. Up to 3526 conditions per place. [2024-06-27 18:11:06,269 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 273 selfloop transitions, 27 changer transitions 0/308 dead transitions. [2024-06-27 18:11:06,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 308 transitions, 4083 flow [2024-06-27 18:11:06,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:11:06,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:11:06,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2024-06-27 18:11:06,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4783783783783784 [2024-06-27 18:11:06,271 INFO L175 Difference]: Start difference. First operand has 271 places, 265 transitions, 3119 flow. Second operand 10 states and 177 transitions. [2024-06-27 18:11:06,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 308 transitions, 4083 flow [2024-06-27 18:11:06,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 308 transitions, 3892 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 18:11:06,765 INFO L231 Difference]: Finished difference. Result has 275 places, 268 transitions, 3047 flow [2024-06-27 18:11:06,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2930, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3047, PETRI_PLACES=275, PETRI_TRANSITIONS=268} [2024-06-27 18:11:06,766 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 234 predicate places. [2024-06-27 18:11:06,766 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 268 transitions, 3047 flow [2024-06-27 18:11:06,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:06,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:06,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:06,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 18:11:06,767 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:11:06,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:06,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1519393864, now seen corresponding path program 16 times [2024-06-27 18:11:06,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:06,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285790311] [2024-06-27 18:11:06,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:06,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:06,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:07,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:07,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:07,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285790311] [2024-06-27 18:11:07,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285790311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:07,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:07,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:11:07,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054893311] [2024-06-27 18:11:07,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:07,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:11:07,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:07,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:11:07,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:11:07,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:11:07,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 268 transitions, 3047 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:07,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:07,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:11:07,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:08,650 INFO L124 PetriNetUnfolderBase]: 2369/4062 cut-off events. [2024-06-27 18:11:08,650 INFO L125 PetriNetUnfolderBase]: For 120235/120314 co-relation queries the response was YES. [2024-06-27 18:11:08,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24455 conditions, 4062 events. 2369/4062 cut-off events. For 120235/120314 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 26353 event pairs, 640 based on Foata normal form. 29/4007 useless extension candidates. Maximal degree in co-relation 24325. Up to 3623 conditions per place. [2024-06-27 18:11:08,698 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 271 selfloop transitions, 24 changer transitions 0/303 dead transitions. [2024-06-27 18:11:08,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 303 transitions, 3801 flow [2024-06-27 18:11:08,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:11:08,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:11:08,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-27 18:11:08,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45135135135135135 [2024-06-27 18:11:08,699 INFO L175 Difference]: Start difference. First operand has 275 places, 268 transitions, 3047 flow. Second operand 10 states and 167 transitions. [2024-06-27 18:11:08,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 303 transitions, 3801 flow [2024-06-27 18:11:09,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 303 transitions, 3659 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-27 18:11:09,338 INFO L231 Difference]: Finished difference. Result has 275 places, 270 transitions, 2994 flow [2024-06-27 18:11:09,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2905, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2994, PETRI_PLACES=275, PETRI_TRANSITIONS=270} [2024-06-27 18:11:09,339 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 234 predicate places. [2024-06-27 18:11:09,339 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 270 transitions, 2994 flow [2024-06-27 18:11:09,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:09,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:09,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:09,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 18:11:09,340 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:11:09,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:09,341 INFO L85 PathProgramCache]: Analyzing trace with hash -2052885752, now seen corresponding path program 17 times [2024-06-27 18:11:09,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:09,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892866076] [2024-06-27 18:11:09,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:09,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:09,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:10,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:10,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:10,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892866076] [2024-06-27 18:11:10,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892866076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:10,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:10,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:11:10,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437621881] [2024-06-27 18:11:10,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:10,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:11:10,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:10,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:11:10,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:11:10,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:11:10,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 270 transitions, 2994 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:10,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:10,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:11:10,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:11,325 INFO L124 PetriNetUnfolderBase]: 2431/4146 cut-off events. [2024-06-27 18:11:11,325 INFO L125 PetriNetUnfolderBase]: For 126819/126894 co-relation queries the response was YES. [2024-06-27 18:11:11,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24815 conditions, 4146 events. 2431/4146 cut-off events. For 126819/126894 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 26842 event pairs, 591 based on Foata normal form. 25/4089 useless extension candidates. Maximal degree in co-relation 24685. Up to 3500 conditions per place. [2024-06-27 18:11:11,375 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 274 selfloop transitions, 34 changer transitions 0/316 dead transitions. [2024-06-27 18:11:11,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 316 transitions, 4152 flow [2024-06-27 18:11:11,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:11:11,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:11:11,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-27 18:11:11,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4891891891891892 [2024-06-27 18:11:11,376 INFO L175 Difference]: Start difference. First operand has 275 places, 270 transitions, 2994 flow. Second operand 10 states and 181 transitions. [2024-06-27 18:11:11,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 316 transitions, 4152 flow [2024-06-27 18:11:11,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 316 transitions, 4047 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-27 18:11:11,899 INFO L231 Difference]: Finished difference. Result has 277 places, 275 transitions, 3054 flow [2024-06-27 18:11:11,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2901, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3054, PETRI_PLACES=277, PETRI_TRANSITIONS=275} [2024-06-27 18:11:11,899 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 236 predicate places. [2024-06-27 18:11:11,899 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 275 transitions, 3054 flow [2024-06-27 18:11:11,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:11,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:11,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:11,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 18:11:11,900 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:11:11,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:11,901 INFO L85 PathProgramCache]: Analyzing trace with hash -559124240, now seen corresponding path program 5 times [2024-06-27 18:11:11,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:11,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135099365] [2024-06-27 18:11:11,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:11,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:11,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:12,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:12,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:12,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135099365] [2024-06-27 18:11:12,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135099365] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:12,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:12,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:11:12,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990577061] [2024-06-27 18:11:12,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:12,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:11:12,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:12,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:11:12,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:11:12,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:11:12,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 275 transitions, 3054 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:12,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:12,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:11:12,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:13,847 INFO L124 PetriNetUnfolderBase]: 2436/4171 cut-off events. [2024-06-27 18:11:13,847 INFO L125 PetriNetUnfolderBase]: For 125301/125367 co-relation queries the response was YES. [2024-06-27 18:11:13,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24700 conditions, 4171 events. 2436/4171 cut-off events. For 125301/125367 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 27130 event pairs, 647 based on Foata normal form. 20/4102 useless extension candidates. Maximal degree in co-relation 24569. Up to 3715 conditions per place. [2024-06-27 18:11:13,902 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 277 selfloop transitions, 24 changer transitions 0/309 dead transitions. [2024-06-27 18:11:13,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 309 transitions, 3836 flow [2024-06-27 18:11:13,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:11:13,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:11:13,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-27 18:11:13,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46546546546546547 [2024-06-27 18:11:13,904 INFO L175 Difference]: Start difference. First operand has 277 places, 275 transitions, 3054 flow. Second operand 9 states and 155 transitions. [2024-06-27 18:11:13,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 309 transitions, 3836 flow [2024-06-27 18:11:14,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 309 transitions, 3801 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 18:11:14,455 INFO L231 Difference]: Finished difference. Result has 281 places, 277 transitions, 3113 flow [2024-06-27 18:11:14,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3020, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3113, PETRI_PLACES=281, PETRI_TRANSITIONS=277} [2024-06-27 18:11:14,455 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 240 predicate places. [2024-06-27 18:11:14,455 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 277 transitions, 3113 flow [2024-06-27 18:11:14,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:14,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:14,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:14,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 18:11:14,456 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:11:14,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:14,456 INFO L85 PathProgramCache]: Analyzing trace with hash -297295092, now seen corresponding path program 1 times [2024-06-27 18:11:14,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:14,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619554873] [2024-06-27 18:11:14,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:14,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:14,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:15,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:15,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:15,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619554873] [2024-06-27 18:11:15,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619554873] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:15,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:15,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:11:15,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625819634] [2024-06-27 18:11:15,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:15,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:11:15,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:15,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:11:15,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:11:15,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:11:15,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 277 transitions, 3113 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:15,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:15,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:11:15,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:16,816 INFO L124 PetriNetUnfolderBase]: 2479/4430 cut-off events. [2024-06-27 18:11:16,816 INFO L125 PetriNetUnfolderBase]: For 133080/133087 co-relation queries the response was YES. [2024-06-27 18:11:16,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25682 conditions, 4430 events. 2479/4430 cut-off events. For 133080/133087 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 30214 event pairs, 484 based on Foata normal form. 7/4399 useless extension candidates. Maximal degree in co-relation 25549. Up to 3454 conditions per place. [2024-06-27 18:11:16,876 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 298 selfloop transitions, 33 changer transitions 0/339 dead transitions. [2024-06-27 18:11:16,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 339 transitions, 4211 flow [2024-06-27 18:11:16,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:11:16,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:11:16,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 215 transitions. [2024-06-27 18:11:16,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48423423423423423 [2024-06-27 18:11:16,878 INFO L175 Difference]: Start difference. First operand has 281 places, 277 transitions, 3113 flow. Second operand 12 states and 215 transitions. [2024-06-27 18:11:16,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 339 transitions, 4211 flow [2024-06-27 18:11:17,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 339 transitions, 4111 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-27 18:11:17,569 INFO L231 Difference]: Finished difference. Result has 284 places, 279 transitions, 3114 flow [2024-06-27 18:11:17,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3013, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3114, PETRI_PLACES=284, PETRI_TRANSITIONS=279} [2024-06-27 18:11:17,571 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 243 predicate places. [2024-06-27 18:11:17,571 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 279 transitions, 3114 flow [2024-06-27 18:11:17,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:17,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:17,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:17,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 18:11:17,579 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:11:17,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:17,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1937122268, now seen corresponding path program 2 times [2024-06-27 18:11:17,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:17,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637164291] [2024-06-27 18:11:17,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:17,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:17,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:18,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:18,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:18,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637164291] [2024-06-27 18:11:18,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637164291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:18,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:18,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:11:18,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635155202] [2024-06-27 18:11:18,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:18,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:11:18,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:18,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:11:18,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:11:18,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:11:18,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 279 transitions, 3114 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:18,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:18,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:11:18,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:19,772 INFO L124 PetriNetUnfolderBase]: 2524/4507 cut-off events. [2024-06-27 18:11:19,772 INFO L125 PetriNetUnfolderBase]: For 134891/134898 co-relation queries the response was YES. [2024-06-27 18:11:19,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26181 conditions, 4507 events. 2524/4507 cut-off events. For 134891/134898 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 30826 event pairs, 546 based on Foata normal form. 7/4476 useless extension candidates. Maximal degree in co-relation 26050. Up to 3745 conditions per place. [2024-06-27 18:11:19,824 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 299 selfloop transitions, 36 changer transitions 0/343 dead transitions. [2024-06-27 18:11:19,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 343 transitions, 4136 flow [2024-06-27 18:11:19,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:11:19,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:11:19,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 212 transitions. [2024-06-27 18:11:19,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774774774774775 [2024-06-27 18:11:19,826 INFO L175 Difference]: Start difference. First operand has 284 places, 279 transitions, 3114 flow. Second operand 12 states and 212 transitions. [2024-06-27 18:11:19,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 343 transitions, 4136 flow [2024-06-27 18:11:20,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 343 transitions, 4072 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 18:11:20,348 INFO L231 Difference]: Finished difference. Result has 289 places, 286 transitions, 3230 flow [2024-06-27 18:11:20,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3058, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3230, PETRI_PLACES=289, PETRI_TRANSITIONS=286} [2024-06-27 18:11:20,349 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 248 predicate places. [2024-06-27 18:11:20,349 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 286 transitions, 3230 flow [2024-06-27 18:11:20,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:20,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:20,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:20,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 18:11:20,349 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:11:20,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:20,350 INFO L85 PathProgramCache]: Analyzing trace with hash -2114417997, now seen corresponding path program 1 times [2024-06-27 18:11:20,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:20,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016647971] [2024-06-27 18:11:20,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:20,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:20,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:21,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:21,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:21,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016647971] [2024-06-27 18:11:21,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016647971] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:21,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:21,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:11:21,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018082132] [2024-06-27 18:11:21,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:21,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:11:21,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:21,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:11:21,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:11:21,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:11:21,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 286 transitions, 3230 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:21,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:21,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:11:21,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:22,980 INFO L124 PetriNetUnfolderBase]: 2546/4541 cut-off events. [2024-06-27 18:11:22,981 INFO L125 PetriNetUnfolderBase]: For 138201/138208 co-relation queries the response was YES. [2024-06-27 18:11:23,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26454 conditions, 4541 events. 2546/4541 cut-off events. For 138201/138208 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 31089 event pairs, 544 based on Foata normal form. 7/4510 useless extension candidates. Maximal degree in co-relation 26321. Up to 3720 conditions per place. [2024-06-27 18:11:23,039 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 305 selfloop transitions, 45 changer transitions 0/358 dead transitions. [2024-06-27 18:11:23,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 358 transitions, 4428 flow [2024-06-27 18:11:23,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 18:11:23,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 18:11:23,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 246 transitions. [2024-06-27 18:11:23,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4749034749034749 [2024-06-27 18:11:23,040 INFO L175 Difference]: Start difference. First operand has 289 places, 286 transitions, 3230 flow. Second operand 14 states and 246 transitions. [2024-06-27 18:11:23,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 358 transitions, 4428 flow [2024-06-27 18:11:23,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 358 transitions, 4362 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-27 18:11:23,599 INFO L231 Difference]: Finished difference. Result has 295 places, 288 transitions, 3288 flow [2024-06-27 18:11:23,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3164, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3288, PETRI_PLACES=295, PETRI_TRANSITIONS=288} [2024-06-27 18:11:23,600 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 254 predicate places. [2024-06-27 18:11:23,600 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 288 transitions, 3288 flow [2024-06-27 18:11:23,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:23,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:23,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:23,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 18:11:23,601 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:11:23,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:23,601 INFO L85 PathProgramCache]: Analyzing trace with hash -433815704, now seen corresponding path program 3 times [2024-06-27 18:11:23,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:23,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132231759] [2024-06-27 18:11:23,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:23,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:23,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:24,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:24,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:24,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132231759] [2024-06-27 18:11:24,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132231759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:24,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:24,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:11:24,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515011712] [2024-06-27 18:11:24,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:24,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:11:24,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:24,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:11:24,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:11:24,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:11:24,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 288 transitions, 3288 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:24,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:24,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:11:24,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:25,834 INFO L124 PetriNetUnfolderBase]: 2562/4575 cut-off events. [2024-06-27 18:11:25,834 INFO L125 PetriNetUnfolderBase]: For 141574/141581 co-relation queries the response was YES. [2024-06-27 18:11:25,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26732 conditions, 4575 events. 2562/4575 cut-off events. For 141574/141581 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 31456 event pairs, 547 based on Foata normal form. 7/4544 useless extension candidates. Maximal degree in co-relation 26598. Up to 3678 conditions per place. [2024-06-27 18:11:25,888 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 292 selfloop transitions, 35 changer transitions 0/335 dead transitions. [2024-06-27 18:11:25,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 335 transitions, 4304 flow [2024-06-27 18:11:25,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:11:25,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:11:25,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-27 18:11:25,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4837837837837838 [2024-06-27 18:11:25,890 INFO L175 Difference]: Start difference. First operand has 295 places, 288 transitions, 3288 flow. Second operand 10 states and 179 transitions. [2024-06-27 18:11:25,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 335 transitions, 4304 flow [2024-06-27 18:11:26,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 335 transitions, 4164 flow, removed 10 selfloop flow, removed 13 redundant places. [2024-06-27 18:11:26,601 INFO L231 Difference]: Finished difference. Result has 292 places, 289 transitions, 3235 flow [2024-06-27 18:11:26,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3148, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3235, PETRI_PLACES=292, PETRI_TRANSITIONS=289} [2024-06-27 18:11:26,602 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 251 predicate places. [2024-06-27 18:11:26,602 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 289 transitions, 3235 flow [2024-06-27 18:11:26,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:26,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:26,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:26,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 18:11:26,603 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:11:26,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:26,603 INFO L85 PathProgramCache]: Analyzing trace with hash -347120174, now seen corresponding path program 4 times [2024-06-27 18:11:26,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:26,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42633336] [2024-06-27 18:11:26,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:26,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:26,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:27,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:27,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:27,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42633336] [2024-06-27 18:11:27,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42633336] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:27,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:27,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:11:27,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943186193] [2024-06-27 18:11:27,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:27,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:11:27,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:27,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:11:27,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:11:27,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:11:27,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 289 transitions, 3235 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:27,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:27,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:11:27,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:28,998 INFO L124 PetriNetUnfolderBase]: 2589/4614 cut-off events. [2024-06-27 18:11:28,998 INFO L125 PetriNetUnfolderBase]: For 144974/144981 co-relation queries the response was YES. [2024-06-27 18:11:29,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26851 conditions, 4614 events. 2589/4614 cut-off events. For 144974/144981 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 31637 event pairs, 551 based on Foata normal form. 7/4583 useless extension candidates. Maximal degree in co-relation 26716. Up to 3916 conditions per place. [2024-06-27 18:11:29,055 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 303 selfloop transitions, 30 changer transitions 0/341 dead transitions. [2024-06-27 18:11:29,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 341 transitions, 4164 flow [2024-06-27 18:11:29,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:11:29,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:11:29,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 192 transitions. [2024-06-27 18:11:29,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47174447174447176 [2024-06-27 18:11:29,057 INFO L175 Difference]: Start difference. First operand has 292 places, 289 transitions, 3235 flow. Second operand 11 states and 192 transitions. [2024-06-27 18:11:29,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 341 transitions, 4164 flow [2024-06-27 18:11:29,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 341 transitions, 4082 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-27 18:11:29,733 INFO L231 Difference]: Finished difference. Result has 295 places, 292 transitions, 3258 flow [2024-06-27 18:11:29,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3159, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3258, PETRI_PLACES=295, PETRI_TRANSITIONS=292} [2024-06-27 18:11:29,734 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 254 predicate places. [2024-06-27 18:11:29,734 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 292 transitions, 3258 flow [2024-06-27 18:11:29,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:29,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:29,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:29,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 18:11:29,735 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:11:29,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:29,735 INFO L85 PathProgramCache]: Analyzing trace with hash -2027582192, now seen corresponding path program 5 times [2024-06-27 18:11:29,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:29,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78667904] [2024-06-27 18:11:29,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:29,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:29,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:30,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:30,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:30,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78667904] [2024-06-27 18:11:30,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78667904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:30,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:30,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:11:30,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572258718] [2024-06-27 18:11:30,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:30,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:11:30,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:30,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:11:30,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:11:30,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:11:30,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 292 transitions, 3258 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:30,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:30,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:11:30,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:31,726 INFO L124 PetriNetUnfolderBase]: 2586/4615 cut-off events. [2024-06-27 18:11:31,726 INFO L125 PetriNetUnfolderBase]: For 142180/142187 co-relation queries the response was YES. [2024-06-27 18:11:31,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26660 conditions, 4615 events. 2586/4615 cut-off events. For 142180/142187 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 31733 event pairs, 552 based on Foata normal form. 7/4584 useless extension candidates. Maximal degree in co-relation 26524. Up to 3798 conditions per place. [2024-06-27 18:11:31,780 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 287 selfloop transitions, 41 changer transitions 0/336 dead transitions. [2024-06-27 18:11:31,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 336 transitions, 4112 flow [2024-06-27 18:11:31,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:11:31,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:11:31,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2024-06-27 18:11:31,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4783783783783784 [2024-06-27 18:11:31,782 INFO L175 Difference]: Start difference. First operand has 295 places, 292 transitions, 3258 flow. Second operand 10 states and 177 transitions. [2024-06-27 18:11:31,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 336 transitions, 4112 flow [2024-06-27 18:11:32,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 336 transitions, 4033 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-27 18:11:32,481 INFO L231 Difference]: Finished difference. Result has 296 places, 292 transitions, 3269 flow [2024-06-27 18:11:32,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3179, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3269, PETRI_PLACES=296, PETRI_TRANSITIONS=292} [2024-06-27 18:11:32,482 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 255 predicate places. [2024-06-27 18:11:32,482 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 292 transitions, 3269 flow [2024-06-27 18:11:32,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:32,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:32,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:32,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 18:11:32,482 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:11:32,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:32,483 INFO L85 PathProgramCache]: Analyzing trace with hash -2027576457, now seen corresponding path program 2 times [2024-06-27 18:11:32,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:32,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459969396] [2024-06-27 18:11:32,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:32,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:32,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:33,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:33,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:33,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459969396] [2024-06-27 18:11:33,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459969396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:33,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:33,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:11:33,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479653645] [2024-06-27 18:11:33,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:33,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:11:33,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:33,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:11:33,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:11:33,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:11:33,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 292 transitions, 3269 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:33,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:33,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:11:33,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:34,739 INFO L124 PetriNetUnfolderBase]: 2582/4603 cut-off events. [2024-06-27 18:11:34,740 INFO L125 PetriNetUnfolderBase]: For 139346/139353 co-relation queries the response was YES. [2024-06-27 18:11:34,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26516 conditions, 4603 events. 2582/4603 cut-off events. For 139346/139353 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 31602 event pairs, 543 based on Foata normal form. 7/4572 useless extension candidates. Maximal degree in co-relation 26380. Up to 3927 conditions per place. [2024-06-27 18:11:34,799 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 307 selfloop transitions, 27 changer transitions 0/342 dead transitions. [2024-06-27 18:11:34,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 342 transitions, 4167 flow [2024-06-27 18:11:34,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:11:34,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:11:34,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 192 transitions. [2024-06-27 18:11:34,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47174447174447176 [2024-06-27 18:11:34,801 INFO L175 Difference]: Start difference. First operand has 296 places, 292 transitions, 3269 flow. Second operand 11 states and 192 transitions. [2024-06-27 18:11:34,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 342 transitions, 4167 flow [2024-06-27 18:11:35,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 342 transitions, 4063 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-27 18:11:35,550 INFO L231 Difference]: Finished difference. Result has 298 places, 292 transitions, 3224 flow [2024-06-27 18:11:35,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3165, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3224, PETRI_PLACES=298, PETRI_TRANSITIONS=292} [2024-06-27 18:11:35,551 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 257 predicate places. [2024-06-27 18:11:35,551 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 292 transitions, 3224 flow [2024-06-27 18:11:35,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:35,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:35,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:35,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 18:11:35,551 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:11:35,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:35,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1546449813, now seen corresponding path program 3 times [2024-06-27 18:11:35,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:35,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678596090] [2024-06-27 18:11:35,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:35,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:35,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:36,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:36,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:36,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678596090] [2024-06-27 18:11:36,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678596090] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:36,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:36,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:11:36,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920083759] [2024-06-27 18:11:36,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:36,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:11:36,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:36,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:11:36,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:11:37,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:11:37,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 292 transitions, 3224 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:37,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:37,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:11:37,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:38,372 INFO L124 PetriNetUnfolderBase]: 2572/4441 cut-off events. [2024-06-27 18:11:38,373 INFO L125 PetriNetUnfolderBase]: For 130934/130996 co-relation queries the response was YES. [2024-06-27 18:11:38,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25830 conditions, 4441 events. 2572/4441 cut-off events. For 130934/130996 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 29307 event pairs, 358 based on Foata normal form. 38/4424 useless extension candidates. Maximal degree in co-relation 25693. Up to 1991 conditions per place. [2024-06-27 18:11:38,429 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 216 selfloop transitions, 123 changer transitions 0/347 dead transitions. [2024-06-27 18:11:38,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 347 transitions, 4457 flow [2024-06-27 18:11:38,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:11:38,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:11:38,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 215 transitions. [2024-06-27 18:11:38,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5282555282555282 [2024-06-27 18:11:38,430 INFO L175 Difference]: Start difference. First operand has 298 places, 292 transitions, 3224 flow. Second operand 11 states and 215 transitions. [2024-06-27 18:11:38,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 347 transitions, 4457 flow [2024-06-27 18:11:39,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 347 transitions, 4388 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-27 18:11:39,077 INFO L231 Difference]: Finished difference. Result has 300 places, 292 transitions, 3406 flow [2024-06-27 18:11:39,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3155, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3406, PETRI_PLACES=300, PETRI_TRANSITIONS=292} [2024-06-27 18:11:39,078 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 259 predicate places. [2024-06-27 18:11:39,078 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 292 transitions, 3406 flow [2024-06-27 18:11:39,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:39,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:39,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:39,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 18:11:39,078 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:11:39,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:39,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1546444078, now seen corresponding path program 6 times [2024-06-27 18:11:39,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:39,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808742267] [2024-06-27 18:11:39,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:39,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:39,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:40,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:40,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:40,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808742267] [2024-06-27 18:11:40,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808742267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:40,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:40,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:11:40,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458479612] [2024-06-27 18:11:40,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:40,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:11:40,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:40,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:11:40,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:11:40,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:11:40,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 292 transitions, 3406 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:40,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:40,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:11:40,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:41,218 INFO L124 PetriNetUnfolderBase]: 2576/4367 cut-off events. [2024-06-27 18:11:41,218 INFO L125 PetriNetUnfolderBase]: For 136063/136125 co-relation queries the response was YES. [2024-06-27 18:11:41,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26452 conditions, 4367 events. 2576/4367 cut-off events. For 136063/136125 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 28283 event pairs, 325 based on Foata normal form. 38/4350 useless extension candidates. Maximal degree in co-relation 26314. Up to 3056 conditions per place. [2024-06-27 18:11:41,276 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 238 selfloop transitions, 92 changer transitions 0/338 dead transitions. [2024-06-27 18:11:41,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 338 transitions, 4289 flow [2024-06-27 18:11:41,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:11:41,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:11:41,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-27 18:11:41,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2024-06-27 18:11:41,277 INFO L175 Difference]: Start difference. First operand has 300 places, 292 transitions, 3406 flow. Second operand 10 states and 190 transitions. [2024-06-27 18:11:41,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 338 transitions, 4289 flow [2024-06-27 18:11:41,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 338 transitions, 4036 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 18:11:41,961 INFO L231 Difference]: Finished difference. Result has 300 places, 293 transitions, 3359 flow [2024-06-27 18:11:41,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3153, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3359, PETRI_PLACES=300, PETRI_TRANSITIONS=293} [2024-06-27 18:11:41,962 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 259 predicate places. [2024-06-27 18:11:41,962 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 293 transitions, 3359 flow [2024-06-27 18:11:41,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:41,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:41,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:41,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 18:11:41,962 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:11:41,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:41,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1546296208, now seen corresponding path program 7 times [2024-06-27 18:11:41,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:41,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032384083] [2024-06-27 18:11:41,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:41,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:41,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:43,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:43,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:43,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032384083] [2024-06-27 18:11:43,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032384083] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:43,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:43,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:11:43,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769388981] [2024-06-27 18:11:43,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:43,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:11:43,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:43,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:11:43,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:11:43,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:11:43,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 293 transitions, 3359 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:43,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:43,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:11:43,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:44,423 INFO L124 PetriNetUnfolderBase]: 2623/4421 cut-off events. [2024-06-27 18:11:44,423 INFO L125 PetriNetUnfolderBase]: For 145298/145360 co-relation queries the response was YES. [2024-06-27 18:11:44,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26774 conditions, 4421 events. 2623/4421 cut-off events. For 145298/145360 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 28559 event pairs, 308 based on Foata normal form. 38/4404 useless extension candidates. Maximal degree in co-relation 26635. Up to 3376 conditions per place. [2024-06-27 18:11:44,486 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 265 selfloop transitions, 73 changer transitions 0/346 dead transitions. [2024-06-27 18:11:44,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 346 transitions, 4457 flow [2024-06-27 18:11:44,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:11:44,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:11:44,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 205 transitions. [2024-06-27 18:11:44,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5036855036855037 [2024-06-27 18:11:44,487 INFO L175 Difference]: Start difference. First operand has 300 places, 293 transitions, 3359 flow. Second operand 11 states and 205 transitions. [2024-06-27 18:11:44,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 346 transitions, 4457 flow [2024-06-27 18:11:45,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 346 transitions, 4263 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-27 18:11:45,360 INFO L231 Difference]: Finished difference. Result has 303 places, 295 transitions, 3353 flow [2024-06-27 18:11:45,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3165, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3353, PETRI_PLACES=303, PETRI_TRANSITIONS=295} [2024-06-27 18:11:45,361 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 262 predicate places. [2024-06-27 18:11:45,361 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 295 transitions, 3353 flow [2024-06-27 18:11:45,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:45,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:45,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:45,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 18:11:45,362 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:11:45,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:45,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1552021939, now seen corresponding path program 1 times [2024-06-27 18:11:45,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:45,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129026699] [2024-06-27 18:11:45,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:45,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:45,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:46,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:46,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:46,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129026699] [2024-06-27 18:11:46,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129026699] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:46,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:46,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:11:46,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218879699] [2024-06-27 18:11:46,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:46,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:11:46,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:46,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:11:46,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:11:46,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:11:46,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 295 transitions, 3353 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:46,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:46,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:11:46,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:47,804 INFO L124 PetriNetUnfolderBase]: 2642/4885 cut-off events. [2024-06-27 18:11:47,804 INFO L125 PetriNetUnfolderBase]: For 149339/149395 co-relation queries the response was YES. [2024-06-27 18:11:47,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27567 conditions, 4885 events. 2642/4885 cut-off events. For 149339/149395 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 35234 event pairs, 414 based on Foata normal form. 40/4887 useless extension candidates. Maximal degree in co-relation 27427. Up to 3676 conditions per place. [2024-06-27 18:11:47,871 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 279 selfloop transitions, 54 changer transitions 0/341 dead transitions. [2024-06-27 18:11:47,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 341 transitions, 4231 flow [2024-06-27 18:11:47,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:11:47,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:11:47,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-27 18:11:47,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4945945945945946 [2024-06-27 18:11:47,872 INFO L175 Difference]: Start difference. First operand has 303 places, 295 transitions, 3353 flow. Second operand 10 states and 183 transitions. [2024-06-27 18:11:47,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 341 transitions, 4231 flow [2024-06-27 18:11:48,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 341 transitions, 4139 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-27 18:11:48,740 INFO L231 Difference]: Finished difference. Result has 307 places, 296 transitions, 3383 flow [2024-06-27 18:11:48,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3261, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3383, PETRI_PLACES=307, PETRI_TRANSITIONS=296} [2024-06-27 18:11:48,741 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 266 predicate places. [2024-06-27 18:11:48,741 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 296 transitions, 3383 flow [2024-06-27 18:11:48,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:48,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:48,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:48,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 18:11:48,741 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:11:48,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:48,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1552014003, now seen corresponding path program 4 times [2024-06-27 18:11:48,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:48,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524575536] [2024-06-27 18:11:48,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:48,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:48,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:50,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:50,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:50,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524575536] [2024-06-27 18:11:50,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524575536] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:50,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:50,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:11:50,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267244097] [2024-06-27 18:11:50,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:50,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:11:50,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:50,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:11:50,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:11:50,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:11:50,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 296 transitions, 3383 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:50,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:50,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:11:50,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:51,616 INFO L124 PetriNetUnfolderBase]: 2689/4575 cut-off events. [2024-06-27 18:11:51,616 INFO L125 PetriNetUnfolderBase]: For 151776/151847 co-relation queries the response was YES. [2024-06-27 18:11:51,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27391 conditions, 4575 events. 2689/4575 cut-off events. For 151776/151847 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 30033 event pairs, 260 based on Foata normal form. 45/4564 useless extension candidates. Maximal degree in co-relation 27251. Up to 2991 conditions per place. [2024-06-27 18:11:51,677 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 243 selfloop transitions, 102 changer transitions 0/353 dead transitions. [2024-06-27 18:11:51,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 353 transitions, 4353 flow [2024-06-27 18:11:51,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:11:51,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:11:51,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 206 transitions. [2024-06-27 18:11:51,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5061425061425061 [2024-06-27 18:11:51,680 INFO L175 Difference]: Start difference. First operand has 307 places, 296 transitions, 3383 flow. Second operand 11 states and 206 transitions. [2024-06-27 18:11:51,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 353 transitions, 4353 flow [2024-06-27 18:11:52,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 353 transitions, 4241 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-27 18:11:52,553 INFO L231 Difference]: Finished difference. Result has 311 places, 301 transitions, 3591 flow [2024-06-27 18:11:52,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3271, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3591, PETRI_PLACES=311, PETRI_TRANSITIONS=301} [2024-06-27 18:11:52,554 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 270 predicate places. [2024-06-27 18:11:52,554 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 301 transitions, 3591 flow [2024-06-27 18:11:52,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:52,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:52,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:52,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 18:11:52,555 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:11:52,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:52,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1551806458, now seen corresponding path program 8 times [2024-06-27 18:11:52,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:52,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709205923] [2024-06-27 18:11:52,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:52,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:52,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:53,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:53,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:53,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709205923] [2024-06-27 18:11:53,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709205923] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:53,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:53,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:11:53,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239394154] [2024-06-27 18:11:53,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:53,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:11:53,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:53,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:11:53,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:11:53,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:11:53,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 301 transitions, 3591 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:53,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:53,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:11:53,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:54,729 INFO L124 PetriNetUnfolderBase]: 2680/4551 cut-off events. [2024-06-27 18:11:54,729 INFO L125 PetriNetUnfolderBase]: For 149530/149592 co-relation queries the response was YES. [2024-06-27 18:11:54,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28017 conditions, 4551 events. 2680/4551 cut-off events. For 149530/149592 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 29766 event pairs, 334 based on Foata normal form. 38/4534 useless extension candidates. Maximal degree in co-relation 27875. Up to 3232 conditions per place. [2024-06-27 18:11:54,785 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 240 selfloop transitions, 98 changer transitions 0/346 dead transitions. [2024-06-27 18:11:54,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 346 transitions, 4475 flow [2024-06-27 18:11:54,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:11:54,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:11:54,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-27 18:11:54,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5108108108108108 [2024-06-27 18:11:54,787 INFO L175 Difference]: Start difference. First operand has 311 places, 301 transitions, 3591 flow. Second operand 10 states and 189 transitions. [2024-06-27 18:11:54,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 346 transitions, 4475 flow [2024-06-27 18:11:55,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 346 transitions, 4313 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 18:11:55,635 INFO L231 Difference]: Finished difference. Result has 313 places, 301 transitions, 3631 flow [2024-06-27 18:11:55,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3431, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3631, PETRI_PLACES=313, PETRI_TRANSITIONS=301} [2024-06-27 18:11:55,636 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 272 predicate places. [2024-06-27 18:11:55,636 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 301 transitions, 3631 flow [2024-06-27 18:11:55,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:55,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:55,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:55,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 18:11:55,636 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:11:55,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:55,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1062548935, now seen corresponding path program 5 times [2024-06-27 18:11:55,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:55,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943108465] [2024-06-27 18:11:55,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:55,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:55,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:57,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:57,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:57,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943108465] [2024-06-27 18:11:57,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943108465] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:57,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:57,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:11:57,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379193060] [2024-06-27 18:11:57,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:57,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:11:57,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:57,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:11:57,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:11:57,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:11:57,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 301 transitions, 3631 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:57,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:57,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:11:57,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:58,450 INFO L124 PetriNetUnfolderBase]: 2695/4655 cut-off events. [2024-06-27 18:11:58,450 INFO L125 PetriNetUnfolderBase]: For 150506/150577 co-relation queries the response was YES. [2024-06-27 18:11:58,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28131 conditions, 4655 events. 2695/4655 cut-off events. For 150506/150577 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 31049 event pairs, 356 based on Foata normal form. 45/4644 useless extension candidates. Maximal degree in co-relation 27988. Up to 2068 conditions per place. [2024-06-27 18:11:58,510 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 211 selfloop transitions, 139 changer transitions 0/358 dead transitions. [2024-06-27 18:11:58,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 358 transitions, 4783 flow [2024-06-27 18:11:58,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:11:58,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:11:58,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 214 transitions. [2024-06-27 18:11:58,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5257985257985258 [2024-06-27 18:11:58,512 INFO L175 Difference]: Start difference. First operand has 313 places, 301 transitions, 3631 flow. Second operand 11 states and 214 transitions. [2024-06-27 18:11:58,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 358 transitions, 4783 flow [2024-06-27 18:11:59,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 358 transitions, 4567 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-27 18:11:59,372 INFO L231 Difference]: Finished difference. Result has 316 places, 303 transitions, 3817 flow [2024-06-27 18:11:59,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3415, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3817, PETRI_PLACES=316, PETRI_TRANSITIONS=303} [2024-06-27 18:11:59,373 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 275 predicate places. [2024-06-27 18:11:59,373 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 303 transitions, 3817 flow [2024-06-27 18:11:59,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:59,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:59,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:59,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 18:11:59,373 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:11:59,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:59,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1908671625, now seen corresponding path program 6 times [2024-06-27 18:11:59,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:59,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606236466] [2024-06-27 18:11:59,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:59,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:59,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:00,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:00,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:00,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606236466] [2024-06-27 18:12:00,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606236466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:00,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:00,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:12:00,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631079510] [2024-06-27 18:12:00,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:00,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:12:00,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:00,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:12:00,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:12:00,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:12:00,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 303 transitions, 3817 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:00,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:00,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:12:00,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:01,885 INFO L124 PetriNetUnfolderBase]: 2690/4795 cut-off events. [2024-06-27 18:12:01,885 INFO L125 PetriNetUnfolderBase]: For 150342/150400 co-relation queries the response was YES. [2024-06-27 18:12:01,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29191 conditions, 4795 events. 2690/4795 cut-off events. For 150342/150400 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 33283 event pairs, 532 based on Foata normal form. 34/4762 useless extension candidates. Maximal degree in co-relation 29046. Up to 3796 conditions per place. [2024-06-27 18:12:01,943 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 292 selfloop transitions, 53 changer transitions 0/353 dead transitions. [2024-06-27 18:12:01,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 353 transitions, 4747 flow [2024-06-27 18:12:01,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:12:01,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:12:01,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 202 transitions. [2024-06-27 18:12:01,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4963144963144963 [2024-06-27 18:12:01,944 INFO L175 Difference]: Start difference. First operand has 316 places, 303 transitions, 3817 flow. Second operand 11 states and 202 transitions. [2024-06-27 18:12:01,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 353 transitions, 4747 flow [2024-06-27 18:12:02,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 353 transitions, 4518 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-27 18:12:02,718 INFO L231 Difference]: Finished difference. Result has 318 places, 304 transitions, 3709 flow [2024-06-27 18:12:02,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3588, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3709, PETRI_PLACES=318, PETRI_TRANSITIONS=304} [2024-06-27 18:12:02,719 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 277 predicate places. [2024-06-27 18:12:02,719 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 304 transitions, 3709 flow [2024-06-27 18:12:02,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:02,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:02,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:02,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 18:12:02,719 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:12:02,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:02,720 INFO L85 PathProgramCache]: Analyzing trace with hash -89676630, now seen corresponding path program 9 times [2024-06-27 18:12:02,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:02,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012390262] [2024-06-27 18:12:02,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:02,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:02,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:03,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:03,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:03,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012390262] [2024-06-27 18:12:03,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012390262] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:03,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:03,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:12:03,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141060048] [2024-06-27 18:12:03,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:03,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:12:03,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:03,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:12:03,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:12:03,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:12:03,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 304 transitions, 3709 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:03,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:03,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:12:03,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:05,046 INFO L124 PetriNetUnfolderBase]: 2717/4815 cut-off events. [2024-06-27 18:12:05,046 INFO L125 PetriNetUnfolderBase]: For 152695/152760 co-relation queries the response was YES. [2024-06-27 18:12:05,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28799 conditions, 4815 events. 2717/4815 cut-off events. For 152695/152760 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 33265 event pairs, 594 based on Foata normal form. 33/4776 useless extension candidates. Maximal degree in co-relation 28653. Up to 4002 conditions per place. [2024-06-27 18:12:05,102 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 303 selfloop transitions, 44 changer transitions 0/355 dead transitions. [2024-06-27 18:12:05,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 355 transitions, 4670 flow [2024-06-27 18:12:05,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:12:05,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:12:05,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 200 transitions. [2024-06-27 18:12:05,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4914004914004914 [2024-06-27 18:12:05,104 INFO L175 Difference]: Start difference. First operand has 318 places, 304 transitions, 3709 flow. Second operand 11 states and 200 transitions. [2024-06-27 18:12:05,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 355 transitions, 4670 flow [2024-06-27 18:12:05,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 355 transitions, 4575 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-27 18:12:05,899 INFO L231 Difference]: Finished difference. Result has 323 places, 307 transitions, 3758 flow [2024-06-27 18:12:05,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3616, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3758, PETRI_PLACES=323, PETRI_TRANSITIONS=307} [2024-06-27 18:12:05,899 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 282 predicate places. [2024-06-27 18:12:05,899 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 307 transitions, 3758 flow [2024-06-27 18:12:05,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:05,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:05,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:05,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 18:12:05,900 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:12:05,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:05,900 INFO L85 PathProgramCache]: Analyzing trace with hash -89824500, now seen corresponding path program 10 times [2024-06-27 18:12:05,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:05,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388078363] [2024-06-27 18:12:05,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:05,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:05,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:06,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:06,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:06,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388078363] [2024-06-27 18:12:06,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388078363] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:06,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:06,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:12:06,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142975328] [2024-06-27 18:12:06,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:06,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:12:06,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:06,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:12:06,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:12:06,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:12:06,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 307 transitions, 3758 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:06,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:06,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:12:06,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:08,062 INFO L124 PetriNetUnfolderBase]: 2855/5073 cut-off events. [2024-06-27 18:12:08,062 INFO L125 PetriNetUnfolderBase]: For 208376/208429 co-relation queries the response was YES. [2024-06-27 18:12:08,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31293 conditions, 5073 events. 2855/5073 cut-off events. For 208376/208429 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 35525 event pairs, 598 based on Foata normal form. 31/5032 useless extension candidates. Maximal degree in co-relation 31145. Up to 3881 conditions per place. [2024-06-27 18:12:08,122 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 301 selfloop transitions, 50 changer transitions 0/359 dead transitions. [2024-06-27 18:12:08,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 359 transitions, 4936 flow [2024-06-27 18:12:08,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:12:08,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:12:08,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-06-27 18:12:08,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.518918918918919 [2024-06-27 18:12:08,124 INFO L175 Difference]: Start difference. First operand has 323 places, 307 transitions, 3758 flow. Second operand 10 states and 192 transitions. [2024-06-27 18:12:08,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 359 transitions, 4936 flow [2024-06-27 18:12:09,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 359 transitions, 4845 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-27 18:12:09,257 INFO L231 Difference]: Finished difference. Result has 326 places, 309 transitions, 3817 flow [2024-06-27 18:12:09,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3667, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3817, PETRI_PLACES=326, PETRI_TRANSITIONS=309} [2024-06-27 18:12:09,258 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 285 predicate places. [2024-06-27 18:12:09,258 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 309 transitions, 3817 flow [2024-06-27 18:12:09,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:09,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:09,258 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:09,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 18:12:09,259 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:12:09,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:09,259 INFO L85 PathProgramCache]: Analyzing trace with hash -84314250, now seen corresponding path program 11 times [2024-06-27 18:12:09,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:09,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756018534] [2024-06-27 18:12:09,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:09,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:09,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:10,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:10,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:10,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756018534] [2024-06-27 18:12:10,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756018534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:10,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:10,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:12:10,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473476595] [2024-06-27 18:12:10,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:10,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:12:10,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:10,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:12:10,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:12:10,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:12:10,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 309 transitions, 3817 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:10,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:10,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:12:10,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:11,675 INFO L124 PetriNetUnfolderBase]: 2871/5124 cut-off events. [2024-06-27 18:12:11,676 INFO L125 PetriNetUnfolderBase]: For 214168/214233 co-relation queries the response was YES. [2024-06-27 18:12:11,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31625 conditions, 5124 events. 2871/5124 cut-off events. For 214168/214233 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 36123 event pairs, 677 based on Foata normal form. 33/5085 useless extension candidates. Maximal degree in co-relation 31476. Up to 4280 conditions per place. [2024-06-27 18:12:11,737 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 306 selfloop transitions, 43 changer transitions 0/357 dead transitions. [2024-06-27 18:12:11,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 357 transitions, 4759 flow [2024-06-27 18:12:11,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:12:11,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:12:11,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 199 transitions. [2024-06-27 18:12:11,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48894348894348894 [2024-06-27 18:12:11,738 INFO L175 Difference]: Start difference. First operand has 326 places, 309 transitions, 3817 flow. Second operand 11 states and 199 transitions. [2024-06-27 18:12:11,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 357 transitions, 4759 flow [2024-06-27 18:12:12,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 357 transitions, 4670 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-27 18:12:12,823 INFO L231 Difference]: Finished difference. Result has 331 places, 310 transitions, 3844 flow [2024-06-27 18:12:12,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3734, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3844, PETRI_PLACES=331, PETRI_TRANSITIONS=310} [2024-06-27 18:12:12,823 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 290 predicate places. [2024-06-27 18:12:12,823 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 310 transitions, 3844 flow [2024-06-27 18:12:12,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:12,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:12,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:12,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 18:12:12,824 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:12:12,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:12,824 INFO L85 PathProgramCache]: Analyzing trace with hash -89820780, now seen corresponding path program 12 times [2024-06-27 18:12:12,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:12,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479954807] [2024-06-27 18:12:12,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:12,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:12,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:13,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:13,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:13,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479954807] [2024-06-27 18:12:13,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479954807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:13,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:13,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:12:13,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378914233] [2024-06-27 18:12:13,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:13,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:12:13,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:13,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:12:13,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:12:13,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:12:13,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 310 transitions, 3844 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:13,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:13,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:12:13,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:15,062 INFO L124 PetriNetUnfolderBase]: 2890/5220 cut-off events. [2024-06-27 18:12:15,063 INFO L125 PetriNetUnfolderBase]: For 217593/217647 co-relation queries the response was YES. [2024-06-27 18:12:15,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31988 conditions, 5220 events. 2890/5220 cut-off events. For 217593/217647 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 37220 event pairs, 636 based on Foata normal form. 34/5186 useless extension candidates. Maximal degree in co-relation 31837. Up to 4217 conditions per place. [2024-06-27 18:12:15,129 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 296 selfloop transitions, 50 changer transitions 0/354 dead transitions. [2024-06-27 18:12:15,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 354 transitions, 4754 flow [2024-06-27 18:12:15,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:12:15,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:12:15,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-27 18:12:15,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027027027027027 [2024-06-27 18:12:15,131 INFO L175 Difference]: Start difference. First operand has 331 places, 310 transitions, 3844 flow. Second operand 10 states and 186 transitions. [2024-06-27 18:12:15,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 354 transitions, 4754 flow [2024-06-27 18:12:16,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 354 transitions, 4648 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-27 18:12:16,234 INFO L231 Difference]: Finished difference. Result has 332 places, 311 transitions, 3866 flow [2024-06-27 18:12:16,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3738, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3866, PETRI_PLACES=332, PETRI_TRANSITIONS=311} [2024-06-27 18:12:16,236 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 291 predicate places. [2024-06-27 18:12:16,236 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 311 transitions, 3866 flow [2024-06-27 18:12:16,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:16,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:16,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:16,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 18:12:16,237 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:12:16,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:16,237 INFO L85 PathProgramCache]: Analyzing trace with hash -222493331, now seen corresponding path program 2 times [2024-06-27 18:12:16,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:16,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566486631] [2024-06-27 18:12:16,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:16,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:16,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:17,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:17,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:17,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566486631] [2024-06-27 18:12:17,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566486631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:17,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:17,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:12:17,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128200285] [2024-06-27 18:12:17,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:17,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:12:17,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:17,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:12:17,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:12:17,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:12:17,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 311 transitions, 3866 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:17,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:17,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:12:17,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:18,860 INFO L124 PetriNetUnfolderBase]: 2899/5148 cut-off events. [2024-06-27 18:12:18,861 INFO L125 PetriNetUnfolderBase]: For 221872/221929 co-relation queries the response was YES. [2024-06-27 18:12:18,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31976 conditions, 5148 events. 2899/5148 cut-off events. For 221872/221929 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 36237 event pairs, 659 based on Foata normal form. 31/5104 useless extension candidates. Maximal degree in co-relation 31824. Up to 4367 conditions per place. [2024-06-27 18:12:18,933 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 310 selfloop transitions, 37 changer transitions 0/355 dead transitions. [2024-06-27 18:12:18,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 355 transitions, 4768 flow [2024-06-27 18:12:18,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:12:18,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:12:18,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-27 18:12:18,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4918918918918919 [2024-06-27 18:12:18,934 INFO L175 Difference]: Start difference. First operand has 332 places, 311 transitions, 3866 flow. Second operand 10 states and 182 transitions. [2024-06-27 18:12:18,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 355 transitions, 4768 flow [2024-06-27 18:12:20,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 355 transitions, 4660 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-27 18:12:20,209 INFO L231 Difference]: Finished difference. Result has 334 places, 312 transitions, 3848 flow [2024-06-27 18:12:20,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3758, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3848, PETRI_PLACES=334, PETRI_TRANSITIONS=312} [2024-06-27 18:12:20,209 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 293 predicate places. [2024-06-27 18:12:20,209 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 312 transitions, 3848 flow [2024-06-27 18:12:20,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:20,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:20,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:20,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 18:12:20,210 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:12:20,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:20,210 INFO L85 PathProgramCache]: Analyzing trace with hash -222501267, now seen corresponding path program 7 times [2024-06-27 18:12:20,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:20,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405240590] [2024-06-27 18:12:20,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:20,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:20,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:21,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:21,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:21,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405240590] [2024-06-27 18:12:21,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405240590] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:21,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:21,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:12:21,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075882983] [2024-06-27 18:12:21,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:21,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:12:21,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:21,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:12:21,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:12:21,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:12:21,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 312 transitions, 3848 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:21,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:21,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:12:21,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:22,728 INFO L124 PetriNetUnfolderBase]: 2924/5290 cut-off events. [2024-06-27 18:12:22,728 INFO L125 PetriNetUnfolderBase]: For 225873/225921 co-relation queries the response was YES. [2024-06-27 18:12:22,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32316 conditions, 5290 events. 2924/5290 cut-off events. For 225873/225921 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 37983 event pairs, 630 based on Foata normal form. 29/5255 useless extension candidates. Maximal degree in co-relation 32163. Up to 3947 conditions per place. [2024-06-27 18:12:22,804 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 290 selfloop transitions, 68 changer transitions 0/366 dead transitions. [2024-06-27 18:12:22,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 366 transitions, 5190 flow [2024-06-27 18:12:22,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:12:22,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:12:22,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 210 transitions. [2024-06-27 18:12:22,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515970515970516 [2024-06-27 18:12:22,805 INFO L175 Difference]: Start difference. First operand has 334 places, 312 transitions, 3848 flow. Second operand 11 states and 210 transitions. [2024-06-27 18:12:22,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 366 transitions, 5190 flow [2024-06-27 18:12:24,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 366 transitions, 5110 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 18:12:24,034 INFO L231 Difference]: Finished difference. Result has 337 places, 314 transitions, 3941 flow [2024-06-27 18:12:24,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3768, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3941, PETRI_PLACES=337, PETRI_TRANSITIONS=314} [2024-06-27 18:12:24,035 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 296 predicate places. [2024-06-27 18:12:24,035 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 314 transitions, 3941 flow [2024-06-27 18:12:24,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:24,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:24,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:24,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 18:12:24,035 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:12:24,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:24,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1903309245, now seen corresponding path program 8 times [2024-06-27 18:12:24,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:24,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042276275] [2024-06-27 18:12:24,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:24,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:24,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:25,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:25,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:25,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042276275] [2024-06-27 18:12:25,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042276275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:25,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:25,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:12:25,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117045458] [2024-06-27 18:12:25,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:25,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:12:25,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:25,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:12:25,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:12:25,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:12:25,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 314 transitions, 3941 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:25,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:25,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:12:25,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:26,627 INFO L124 PetriNetUnfolderBase]: 2917/5214 cut-off events. [2024-06-27 18:12:26,627 INFO L125 PetriNetUnfolderBase]: For 223126/223191 co-relation queries the response was YES. [2024-06-27 18:12:26,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32239 conditions, 5214 events. 2917/5214 cut-off events. For 223126/223191 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 37018 event pairs, 618 based on Foata normal form. 33/5179 useless extension candidates. Maximal degree in co-relation 32085. Up to 4195 conditions per place. [2024-06-27 18:12:26,700 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 305 selfloop transitions, 51 changer transitions 0/364 dead transitions. [2024-06-27 18:12:26,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 364 transitions, 4887 flow [2024-06-27 18:12:26,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:12:26,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:12:26,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 205 transitions. [2024-06-27 18:12:26,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5036855036855037 [2024-06-27 18:12:26,701 INFO L175 Difference]: Start difference. First operand has 337 places, 314 transitions, 3941 flow. Second operand 11 states and 205 transitions. [2024-06-27 18:12:26,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 364 transitions, 4887 flow [2024-06-27 18:12:27,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 364 transitions, 4738 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-27 18:12:27,799 INFO L231 Difference]: Finished difference. Result has 340 places, 314 transitions, 3899 flow [2024-06-27 18:12:27,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3792, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3899, PETRI_PLACES=340, PETRI_TRANSITIONS=314} [2024-06-27 18:12:27,799 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 299 predicate places. [2024-06-27 18:12:27,799 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 314 transitions, 3899 flow [2024-06-27 18:12:27,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:27,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:27,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:27,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 18:12:27,800 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:12:27,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:27,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1709375570, now seen corresponding path program 13 times [2024-06-27 18:12:27,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:27,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004726290] [2024-06-27 18:12:27,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:27,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:27,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:28,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:28,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:28,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004726290] [2024-06-27 18:12:28,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004726290] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:28,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:28,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:12:28,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894475347] [2024-06-27 18:12:28,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:28,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:12:28,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:28,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:12:28,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:12:28,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:12:28,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 314 transitions, 3899 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:28,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:28,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:12:28,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:30,189 INFO L124 PetriNetUnfolderBase]: 2903/5131 cut-off events. [2024-06-27 18:12:30,189 INFO L125 PetriNetUnfolderBase]: For 217676/217728 co-relation queries the response was YES. [2024-06-27 18:12:30,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30636 conditions, 5131 events. 2903/5131 cut-off events. For 217676/217728 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 35934 event pairs, 649 based on Foata normal form. 37/5092 useless extension candidates. Maximal degree in co-relation 30481. Up to 4180 conditions per place. [2024-06-27 18:12:30,249 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 317 selfloop transitions, 36 changer transitions 0/361 dead transitions. [2024-06-27 18:12:30,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 361 transitions, 4859 flow [2024-06-27 18:12:30,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:12:30,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:12:30,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-27 18:12:30,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027027027027027 [2024-06-27 18:12:30,250 INFO L175 Difference]: Start difference. First operand has 340 places, 314 transitions, 3899 flow. Second operand 10 states and 186 transitions. [2024-06-27 18:12:30,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 361 transitions, 4859 flow [2024-06-27 18:12:31,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 361 transitions, 4715 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-27 18:12:31,064 INFO L231 Difference]: Finished difference. Result has 339 places, 314 transitions, 3833 flow [2024-06-27 18:12:31,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3755, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3833, PETRI_PLACES=339, PETRI_TRANSITIONS=314} [2024-06-27 18:12:31,064 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 298 predicate places. [2024-06-27 18:12:31,065 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 314 transitions, 3833 flow [2024-06-27 18:12:31,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:31,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:31,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:31,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 18:12:31,065 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:12:31,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:31,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1533496367, now seen corresponding path program 9 times [2024-06-27 18:12:31,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:31,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412680228] [2024-06-27 18:12:31,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:31,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:31,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:32,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:32,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:32,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412680228] [2024-06-27 18:12:32,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412680228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:32,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:32,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:12:32,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471359250] [2024-06-27 18:12:32,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:32,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:12:32,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:32,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:12:32,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:12:32,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:12:32,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 314 transitions, 3833 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:32,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:32,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:12:32,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:33,483 INFO L124 PetriNetUnfolderBase]: 2920/5175 cut-off events. [2024-06-27 18:12:33,483 INFO L125 PetriNetUnfolderBase]: For 171535/171590 co-relation queries the response was YES. [2024-06-27 18:12:33,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30626 conditions, 5175 events. 2920/5175 cut-off events. For 171535/171590 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 36255 event pairs, 669 based on Foata normal form. 27/5128 useless extension candidates. Maximal degree in co-relation 30470. Up to 4252 conditions per place. [2024-06-27 18:12:33,549 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 307 selfloop transitions, 44 changer transitions 0/359 dead transitions. [2024-06-27 18:12:33,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 359 transitions, 4949 flow [2024-06-27 18:12:33,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:12:33,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:12:33,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-27 18:12:33,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4972972972972973 [2024-06-27 18:12:33,550 INFO L175 Difference]: Start difference. First operand has 339 places, 314 transitions, 3833 flow. Second operand 10 states and 184 transitions. [2024-06-27 18:12:33,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 359 transitions, 4949 flow [2024-06-27 18:12:34,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 359 transitions, 4863 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 18:12:34,434 INFO L231 Difference]: Finished difference. Result has 340 places, 316 transitions, 3876 flow [2024-06-27 18:12:34,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3747, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3876, PETRI_PLACES=340, PETRI_TRANSITIONS=316} [2024-06-27 18:12:34,445 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 299 predicate places. [2024-06-27 18:12:34,445 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 316 transitions, 3876 flow [2024-06-27 18:12:34,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:34,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:34,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:34,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 18:12:34,446 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:12:34,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:34,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1709168025, now seen corresponding path program 10 times [2024-06-27 18:12:34,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:34,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566387501] [2024-06-27 18:12:34,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:34,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:34,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:35,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:35,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:35,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566387501] [2024-06-27 18:12:35,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566387501] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:35,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:35,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:12:35,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802431223] [2024-06-27 18:12:35,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:35,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:12:35,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:35,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:12:35,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:12:35,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:12:35,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 316 transitions, 3876 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:35,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:35,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:12:35,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:37,166 INFO L124 PetriNetUnfolderBase]: 2916/5175 cut-off events. [2024-06-27 18:12:37,166 INFO L125 PetriNetUnfolderBase]: For 166030/166082 co-relation queries the response was YES. [2024-06-27 18:12:37,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30496 conditions, 5175 events. 2916/5175 cut-off events. For 166030/166082 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 36470 event pairs, 680 based on Foata normal form. 25/5126 useless extension candidates. Maximal degree in co-relation 30339. Up to 4338 conditions per place. [2024-06-27 18:12:37,232 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 316 selfloop transitions, 40 changer transitions 0/364 dead transitions. [2024-06-27 18:12:37,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 364 transitions, 4814 flow [2024-06-27 18:12:37,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:12:37,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:12:37,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 199 transitions. [2024-06-27 18:12:37,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48894348894348894 [2024-06-27 18:12:37,233 INFO L175 Difference]: Start difference. First operand has 340 places, 316 transitions, 3876 flow. Second operand 11 states and 199 transitions. [2024-06-27 18:12:37,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 364 transitions, 4814 flow [2024-06-27 18:12:38,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 364 transitions, 4703 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-27 18:12:38,249 INFO L231 Difference]: Finished difference. Result has 343 places, 316 transitions, 3850 flow [2024-06-27 18:12:38,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3765, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3850, PETRI_PLACES=343, PETRI_TRANSITIONS=316} [2024-06-27 18:12:38,250 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 302 predicate places. [2024-06-27 18:12:38,250 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 316 transitions, 3850 flow [2024-06-27 18:12:38,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:38,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:38,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:38,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 18:12:38,251 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:12:38,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:38,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1709160089, now seen corresponding path program 3 times [2024-06-27 18:12:38,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:38,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166200538] [2024-06-27 18:12:38,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:38,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:38,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:39,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:39,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:39,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166200538] [2024-06-27 18:12:39,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166200538] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:39,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:39,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:12:39,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759416870] [2024-06-27 18:12:39,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:39,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:12:39,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:39,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:12:39,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:12:39,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:12:39,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 316 transitions, 3850 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:39,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:39,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:12:39,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:40,530 INFO L124 PetriNetUnfolderBase]: 2932/5177 cut-off events. [2024-06-27 18:12:40,530 INFO L125 PetriNetUnfolderBase]: For 165989/166044 co-relation queries the response was YES. [2024-06-27 18:12:40,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30434 conditions, 5177 events. 2932/5177 cut-off events. For 165989/166044 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 36281 event pairs, 709 based on Foata normal form. 27/5126 useless extension candidates. Maximal degree in co-relation 30277. Up to 4461 conditions per place. [2024-06-27 18:12:40,594 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 318 selfloop transitions, 33 changer transitions 0/359 dead transitions. [2024-06-27 18:12:40,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 359 transitions, 4758 flow [2024-06-27 18:12:40,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:12:40,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:12:40,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-27 18:12:40,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4837837837837838 [2024-06-27 18:12:40,595 INFO L175 Difference]: Start difference. First operand has 343 places, 316 transitions, 3850 flow. Second operand 10 states and 179 transitions. [2024-06-27 18:12:40,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 359 transitions, 4758 flow [2024-06-27 18:12:41,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 359 transitions, 4672 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 18:12:41,522 INFO L231 Difference]: Finished difference. Result has 344 places, 317 transitions, 3848 flow [2024-06-27 18:12:41,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3764, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3848, PETRI_PLACES=344, PETRI_TRANSITIONS=317} [2024-06-27 18:12:41,522 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 303 predicate places. [2024-06-27 18:12:41,522 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 317 transitions, 3848 flow [2024-06-27 18:12:41,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:41,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:41,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:41,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 18:12:41,523 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:12:41,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:41,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1701750779, now seen corresponding path program 4 times [2024-06-27 18:12:41,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:41,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554668696] [2024-06-27 18:12:41,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:41,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:41,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:42,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:42,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:42,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554668696] [2024-06-27 18:12:42,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554668696] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:42,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:42,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:12:42,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403740407] [2024-06-27 18:12:42,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:42,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:12:42,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:42,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:12:42,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:12:42,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:12:42,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 317 transitions, 3848 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:42,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:42,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:12:42,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:43,912 INFO L124 PetriNetUnfolderBase]: 2951/5212 cut-off events. [2024-06-27 18:12:43,913 INFO L125 PetriNetUnfolderBase]: For 168346/168395 co-relation queries the response was YES. [2024-06-27 18:12:43,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30591 conditions, 5212 events. 2951/5212 cut-off events. For 168346/168395 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 36570 event pairs, 712 based on Foata normal form. 23/5156 useless extension candidates. Maximal degree in co-relation 30433. Up to 4525 conditions per place. [2024-06-27 18:12:43,980 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 321 selfloop transitions, 31 changer transitions 0/360 dead transitions. [2024-06-27 18:12:43,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 360 transitions, 4769 flow [2024-06-27 18:12:43,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:12:43,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:12:43,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-06-27 18:12:43,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4756756756756757 [2024-06-27 18:12:43,984 INFO L175 Difference]: Start difference. First operand has 344 places, 317 transitions, 3848 flow. Second operand 10 states and 176 transitions. [2024-06-27 18:12:43,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 360 transitions, 4769 flow [2024-06-27 18:12:44,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 360 transitions, 4693 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 18:12:44,926 INFO L231 Difference]: Finished difference. Result has 347 places, 319 transitions, 3872 flow [2024-06-27 18:12:44,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3774, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3872, PETRI_PLACES=347, PETRI_TRANSITIONS=319} [2024-06-27 18:12:44,927 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 306 predicate places. [2024-06-27 18:12:44,927 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 319 transitions, 3872 flow [2024-06-27 18:12:44,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:44,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:44,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:44,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 18:12:44,928 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:12:44,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:44,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1701741479, now seen corresponding path program 5 times [2024-06-27 18:12:44,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:44,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449779021] [2024-06-27 18:12:44,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:44,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:44,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:45,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:45,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:45,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449779021] [2024-06-27 18:12:45,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449779021] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:45,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:45,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:12:45,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544297050] [2024-06-27 18:12:45,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:45,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:12:45,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:45,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:12:45,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:12:46,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:12:46,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 319 transitions, 3872 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:46,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:46,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:12:46,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:47,334 INFO L124 PetriNetUnfolderBase]: 2967/5244 cut-off events. [2024-06-27 18:12:47,335 INFO L125 PetriNetUnfolderBase]: For 171682/171734 co-relation queries the response was YES. [2024-06-27 18:12:47,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30770 conditions, 5244 events. 2967/5244 cut-off events. For 171682/171734 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 36969 event pairs, 711 based on Foata normal form. 26/5188 useless extension candidates. Maximal degree in co-relation 30610. Up to 4551 conditions per place. [2024-06-27 18:12:47,397 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 323 selfloop transitions, 30 changer transitions 0/361 dead transitions. [2024-06-27 18:12:47,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 361 transitions, 4782 flow [2024-06-27 18:12:47,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:12:47,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:12:47,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-27 18:12:47,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-27 18:12:47,399 INFO L175 Difference]: Start difference. First operand has 347 places, 319 transitions, 3872 flow. Second operand 10 states and 175 transitions. [2024-06-27 18:12:47,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 361 transitions, 4782 flow [2024-06-27 18:12:48,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 361 transitions, 4713 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-27 18:12:48,309 INFO L231 Difference]: Finished difference. Result has 350 places, 320 transitions, 3885 flow [2024-06-27 18:12:48,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3803, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3885, PETRI_PLACES=350, PETRI_TRANSITIONS=320} [2024-06-27 18:12:48,310 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 309 predicate places. [2024-06-27 18:12:48,310 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 320 transitions, 3885 flow [2024-06-27 18:12:48,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:48,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:48,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:48,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 18:12:48,310 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:12:48,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:48,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1631197919, now seen corresponding path program 6 times [2024-06-27 18:12:48,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:48,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915664013] [2024-06-27 18:12:48,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:48,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:48,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:49,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:49,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:49,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915664013] [2024-06-27 18:12:49,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915664013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:49,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:49,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:12:49,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120755785] [2024-06-27 18:12:49,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:49,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:12:49,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:49,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:12:49,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:12:49,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:12:49,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 320 transitions, 3885 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:49,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:49,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:12:49,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:50,967 INFO L124 PetriNetUnfolderBase]: 2985/5137 cut-off events. [2024-06-27 18:12:50,967 INFO L125 PetriNetUnfolderBase]: For 175759/175842 co-relation queries the response was YES. [2024-06-27 18:12:51,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30766 conditions, 5137 events. 2985/5137 cut-off events. For 175759/175842 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 35361 event pairs, 871 based on Foata normal form. 25/5069 useless extension candidates. Maximal degree in co-relation 30605. Up to 4654 conditions per place. [2024-06-27 18:12:51,034 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 330 selfloop transitions, 22 changer transitions 0/360 dead transitions. [2024-06-27 18:12:51,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 360 transitions, 4787 flow [2024-06-27 18:12:51,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:12:51,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:12:51,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-27 18:12:51,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46216216216216216 [2024-06-27 18:12:51,035 INFO L175 Difference]: Start difference. First operand has 350 places, 320 transitions, 3885 flow. Second operand 10 states and 171 transitions. [2024-06-27 18:12:51,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 360 transitions, 4787 flow [2024-06-27 18:12:52,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 360 transitions, 4715 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-27 18:12:52,081 INFO L231 Difference]: Finished difference. Result has 353 places, 322 transitions, 3896 flow [2024-06-27 18:12:52,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3813, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3896, PETRI_PLACES=353, PETRI_TRANSITIONS=322} [2024-06-27 18:12:52,082 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 312 predicate places. [2024-06-27 18:12:52,082 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 322 transitions, 3896 flow [2024-06-27 18:12:52,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:52,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:52,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:52,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-27 18:12:52,082 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:12:52,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:52,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1622578413, now seen corresponding path program 7 times [2024-06-27 18:12:52,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:52,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278066253] [2024-06-27 18:12:52,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:52,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:52,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:53,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:53,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:53,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278066253] [2024-06-27 18:12:53,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278066253] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:53,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:53,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:12:53,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992968772] [2024-06-27 18:12:53,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:53,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:12:53,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:53,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:12:53,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:12:53,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:12:53,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 322 transitions, 3896 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:53,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:53,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:12:53,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:54,562 INFO L124 PetriNetUnfolderBase]: 2997/5174 cut-off events. [2024-06-27 18:12:54,563 INFO L125 PetriNetUnfolderBase]: For 179158/179263 co-relation queries the response was YES. [2024-06-27 18:12:54,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30901 conditions, 5174 events. 2997/5174 cut-off events. For 179158/179263 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 35740 event pairs, 899 based on Foata normal form. 33/5117 useless extension candidates. Maximal degree in co-relation 30738. Up to 4685 conditions per place. [2024-06-27 18:12:54,628 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 324 selfloop transitions, 24 changer transitions 0/356 dead transitions. [2024-06-27 18:12:54,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 356 transitions, 4742 flow [2024-06-27 18:12:54,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:12:54,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:12:54,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-27 18:12:54,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-06-27 18:12:54,629 INFO L175 Difference]: Start difference. First operand has 353 places, 322 transitions, 3896 flow. Second operand 10 states and 166 transitions. [2024-06-27 18:12:54,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 356 transitions, 4742 flow [2024-06-27 18:12:55,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 356 transitions, 4687 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-27 18:12:55,699 INFO L231 Difference]: Finished difference. Result has 356 places, 323 transitions, 3916 flow [2024-06-27 18:12:55,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3841, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3916, PETRI_PLACES=356, PETRI_TRANSITIONS=323} [2024-06-27 18:12:55,699 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 315 predicate places. [2024-06-27 18:12:55,700 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 323 transitions, 3916 flow [2024-06-27 18:12:55,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:55,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:55,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:55,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-27 18:12:55,700 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:12:55,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:55,701 INFO L85 PathProgramCache]: Analyzing trace with hash 792478561, now seen corresponding path program 8 times [2024-06-27 18:12:55,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:55,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087643689] [2024-06-27 18:12:55,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:55,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:55,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:56,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:56,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:56,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087643689] [2024-06-27 18:12:56,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087643689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:56,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:56,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:12:56,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376599337] [2024-06-27 18:12:56,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:56,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:12:56,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:56,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:12:56,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:12:56,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:12:56,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 323 transitions, 3916 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:56,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:56,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:12:56,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:58,085 INFO L124 PetriNetUnfolderBase]: 3017/5195 cut-off events. [2024-06-27 18:12:58,086 INFO L125 PetriNetUnfolderBase]: For 182417/182500 co-relation queries the response was YES. [2024-06-27 18:12:58,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31109 conditions, 5195 events. 3017/5195 cut-off events. For 182417/182500 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 35844 event pairs, 891 based on Foata normal form. 25/5126 useless extension candidates. Maximal degree in co-relation 30945. Up to 4706 conditions per place. [2024-06-27 18:12:58,147 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 333 selfloop transitions, 21 changer transitions 0/362 dead transitions. [2024-06-27 18:12:58,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 362 transitions, 4814 flow [2024-06-27 18:12:58,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:12:58,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:12:58,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-27 18:12:58,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 18:12:58,148 INFO L175 Difference]: Start difference. First operand has 356 places, 323 transitions, 3916 flow. Second operand 10 states and 170 transitions. [2024-06-27 18:12:58,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 362 transitions, 4814 flow [2024-06-27 18:12:59,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 362 transitions, 4751 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 18:12:59,341 INFO L231 Difference]: Finished difference. Result has 358 places, 324 transitions, 3923 flow [2024-06-27 18:12:59,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3853, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3923, PETRI_PLACES=358, PETRI_TRANSITIONS=324} [2024-06-27 18:12:59,341 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 317 predicate places. [2024-06-27 18:12:59,341 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 324 transitions, 3923 flow [2024-06-27 18:12:59,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:59,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:59,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:59,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-27 18:12:59,342 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:12:59,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:59,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1879338393, now seen corresponding path program 9 times [2024-06-27 18:12:59,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:59,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300269439] [2024-06-27 18:12:59,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:59,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:59,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:13:00,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:13:00,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:13:00,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300269439] [2024-06-27 18:13:00,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300269439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:13:00,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:13:00,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:13:00,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808107003] [2024-06-27 18:13:00,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:13:00,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:13:00,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:13:00,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:13:00,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:13:00,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:13:00,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 324 transitions, 3923 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:00,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:13:00,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:13:00,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:13:02,118 INFO L124 PetriNetUnfolderBase]: 3031/5266 cut-off events. [2024-06-27 18:13:02,119 INFO L125 PetriNetUnfolderBase]: For 186433/186526 co-relation queries the response was YES. [2024-06-27 18:13:02,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31327 conditions, 5266 events. 3031/5266 cut-off events. For 186433/186526 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 36693 event pairs, 883 based on Foata normal form. 35/5209 useless extension candidates. Maximal degree in co-relation 31162. Up to 4684 conditions per place. [2024-06-27 18:13:02,189 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 328 selfloop transitions, 26 changer transitions 0/362 dead transitions. [2024-06-27 18:13:02,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 362 transitions, 4813 flow [2024-06-27 18:13:02,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:13:02,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:13:02,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-27 18:13:02,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 18:13:02,191 INFO L175 Difference]: Start difference. First operand has 358 places, 324 transitions, 3923 flow. Second operand 10 states and 170 transitions. [2024-06-27 18:13:02,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 362 transitions, 4813 flow [2024-06-27 18:13:03,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 362 transitions, 4753 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 18:13:03,122 INFO L231 Difference]: Finished difference. Result has 361 places, 326 transitions, 3961 flow [2024-06-27 18:13:03,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3863, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3961, PETRI_PLACES=361, PETRI_TRANSITIONS=326} [2024-06-27 18:13:03,123 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 320 predicate places. [2024-06-27 18:13:03,123 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 326 transitions, 3961 flow [2024-06-27 18:13:03,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:03,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:13:03,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:13:03,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-27 18:13:03,123 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:13:03,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:13:03,124 INFO L85 PathProgramCache]: Analyzing trace with hash 143708065, now seen corresponding path program 10 times [2024-06-27 18:13:03,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:13:03,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460717250] [2024-06-27 18:13:03,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:13:03,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:13:03,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:13:04,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:13:04,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:13:04,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460717250] [2024-06-27 18:13:04,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460717250] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:13:04,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:13:04,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:13:04,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079197971] [2024-06-27 18:13:04,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:13:04,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:13:04,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:13:04,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:13:04,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:13:04,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:13:04,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 326 transitions, 3961 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:04,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:13:04,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:13:04,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:13:05,849 INFO L124 PetriNetUnfolderBase]: 3049/5268 cut-off events. [2024-06-27 18:13:05,849 INFO L125 PetriNetUnfolderBase]: For 190607/190720 co-relation queries the response was YES. [2024-06-27 18:13:05,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31592 conditions, 5268 events. 3049/5268 cut-off events. For 190607/190720 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 36616 event pairs, 905 based on Foata normal form. 39/5218 useless extension candidates. Maximal degree in co-relation 31425. Up to 4717 conditions per place. [2024-06-27 18:13:05,927 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 331 selfloop transitions, 27 changer transitions 0/366 dead transitions. [2024-06-27 18:13:05,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 366 transitions, 4861 flow [2024-06-27 18:13:05,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:13:05,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:13:05,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-27 18:13:05,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44963144963144963 [2024-06-27 18:13:05,929 INFO L175 Difference]: Start difference. First operand has 361 places, 326 transitions, 3961 flow. Second operand 11 states and 183 transitions. [2024-06-27 18:13:05,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 366 transitions, 4861 flow [2024-06-27 18:13:07,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 366 transitions, 4792 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 18:13:07,100 INFO L231 Difference]: Finished difference. Result has 365 places, 327 transitions, 3978 flow [2024-06-27 18:13:07,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3892, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3978, PETRI_PLACES=365, PETRI_TRANSITIONS=327} [2024-06-27 18:13:07,101 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 324 predicate places. [2024-06-27 18:13:07,101 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 327 transitions, 3978 flow [2024-06-27 18:13:07,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:07,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:13:07,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:13:07,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-27 18:13:07,102 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:13:07,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:13:07,102 INFO L85 PathProgramCache]: Analyzing trace with hash 847094014, now seen corresponding path program 14 times [2024-06-27 18:13:07,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:13:07,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853790030] [2024-06-27 18:13:07,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:13:07,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:13:07,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:13:07,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:13:07,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:13:07,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853790030] [2024-06-27 18:13:07,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853790030] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:13:07,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:13:07,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:13:07,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997101022] [2024-06-27 18:13:07,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:13:07,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:13:07,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:13:07,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:13:07,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:13:08,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:13:08,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 327 transitions, 3978 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:08,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:13:08,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:13:08,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:13:09,554 INFO L124 PetriNetUnfolderBase]: 3130/5437 cut-off events. [2024-06-27 18:13:09,555 INFO L125 PetriNetUnfolderBase]: For 245168/245275 co-relation queries the response was YES. [2024-06-27 18:13:09,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32302 conditions, 5437 events. 3130/5437 cut-off events. For 245168/245275 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 38138 event pairs, 903 based on Foata normal form. 45/5390 useless extension candidates. Maximal degree in co-relation 32134. Up to 4722 conditions per place. [2024-06-27 18:13:09,635 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 342 selfloop transitions, 24 changer transitions 0/374 dead transitions. [2024-06-27 18:13:09,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 374 transitions, 4960 flow [2024-06-27 18:13:09,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:13:09,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:13:09,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 192 transitions. [2024-06-27 18:13:09,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47174447174447176 [2024-06-27 18:13:09,637 INFO L175 Difference]: Start difference. First operand has 365 places, 327 transitions, 3978 flow. Second operand 11 states and 192 transitions. [2024-06-27 18:13:09,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 374 transitions, 4960 flow [2024-06-27 18:13:10,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 374 transitions, 4884 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-27 18:13:10,823 INFO L231 Difference]: Finished difference. Result has 367 places, 328 transitions, 3981 flow [2024-06-27 18:13:10,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3902, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3981, PETRI_PLACES=367, PETRI_TRANSITIONS=328} [2024-06-27 18:13:10,824 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 326 predicate places. [2024-06-27 18:13:10,824 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 328 transitions, 3981 flow [2024-06-27 18:13:10,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:10,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:13:10,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:13:10,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-27 18:13:10,825 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:13:10,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:13:10,825 INFO L85 PathProgramCache]: Analyzing trace with hash 810226117, now seen corresponding path program 11 times [2024-06-27 18:13:10,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:13:10,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157460875] [2024-06-27 18:13:10,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:13:10,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:13:10,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:13:11,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:13:11,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:13:11,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157460875] [2024-06-27 18:13:11,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157460875] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:13:11,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:13:11,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:13:11,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157112336] [2024-06-27 18:13:11,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:13:11,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:13:11,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:13:11,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:13:11,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:13:11,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:13:11,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 328 transitions, 3981 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:11,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:13:11,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:13:11,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:13:13,343 INFO L124 PetriNetUnfolderBase]: 3204/5576 cut-off events. [2024-06-27 18:13:13,343 INFO L125 PetriNetUnfolderBase]: For 201495/201598 co-relation queries the response was YES. [2024-06-27 18:13:13,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33310 conditions, 5576 events. 3204/5576 cut-off events. For 201495/201598 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 39342 event pairs, 905 based on Foata normal form. 47/5530 useless extension candidates. Maximal degree in co-relation 33141. Up to 4624 conditions per place. [2024-06-27 18:13:13,417 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 319 selfloop transitions, 62 changer transitions 0/389 dead transitions. [2024-06-27 18:13:13,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 389 transitions, 5499 flow [2024-06-27 18:13:13,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:13:13,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:13:13,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 193 transitions. [2024-06-27 18:13:13,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4742014742014742 [2024-06-27 18:13:13,418 INFO L175 Difference]: Start difference. First operand has 367 places, 328 transitions, 3981 flow. Second operand 11 states and 193 transitions. [2024-06-27 18:13:13,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 389 transitions, 5499 flow [2024-06-27 18:13:14,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 389 transitions, 5417 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-06-27 18:13:14,478 INFO L231 Difference]: Finished difference. Result has 371 places, 341 transitions, 4385 flow [2024-06-27 18:13:14,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3899, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4385, PETRI_PLACES=371, PETRI_TRANSITIONS=341} [2024-06-27 18:13:14,479 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 330 predicate places. [2024-06-27 18:13:14,479 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 341 transitions, 4385 flow [2024-06-27 18:13:14,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:14,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:13:14,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:13:14,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-27 18:13:14,479 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:13:14,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:13:14,480 INFO L85 PathProgramCache]: Analyzing trace with hash -2016730855, now seen corresponding path program 11 times [2024-06-27 18:13:14,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:13:14,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441611170] [2024-06-27 18:13:14,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:13:14,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:13:14,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:13:15,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:13:15,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:13:15,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441611170] [2024-06-27 18:13:15,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441611170] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:13:15,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:13:15,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:13:15,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912582659] [2024-06-27 18:13:15,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:13:15,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:13:15,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:13:15,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:13:15,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:13:15,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:13:15,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 341 transitions, 4385 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:15,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:13:15,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:13:15,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:13:16,947 INFO L124 PetriNetUnfolderBase]: 3237/5601 cut-off events. [2024-06-27 18:13:16,948 INFO L125 PetriNetUnfolderBase]: For 210262/210417 co-relation queries the response was YES. [2024-06-27 18:13:17,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34516 conditions, 5601 events. 3237/5601 cut-off events. For 210262/210417 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 39491 event pairs, 1021 based on Foata normal form. 43/5549 useless extension candidates. Maximal degree in co-relation 34343. Up to 5088 conditions per place. [2024-06-27 18:13:17,022 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 346 selfloop transitions, 25 changer transitions 0/379 dead transitions. [2024-06-27 18:13:17,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 379 transitions, 5315 flow [2024-06-27 18:13:17,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:13:17,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:13:17,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-27 18:13:17,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-06-27 18:13:17,023 INFO L175 Difference]: Start difference. First operand has 371 places, 341 transitions, 4385 flow. Second operand 10 states and 166 transitions. [2024-06-27 18:13:17,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 379 transitions, 5315 flow [2024-06-27 18:13:18,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 379 transitions, 5101 flow, removed 85 selfloop flow, removed 5 redundant places. [2024-06-27 18:13:18,217 INFO L231 Difference]: Finished difference. Result has 378 places, 344 transitions, 4305 flow [2024-06-27 18:13:18,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4171, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4305, PETRI_PLACES=378, PETRI_TRANSITIONS=344} [2024-06-27 18:13:18,218 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 337 predicate places. [2024-06-27 18:13:18,218 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 344 transitions, 4305 flow [2024-06-27 18:13:18,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:18,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:13:18,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:13:18,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-27 18:13:18,218 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:13:18,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:13:18,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1922658859, now seen corresponding path program 12 times [2024-06-27 18:13:18,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:13:18,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135300071] [2024-06-27 18:13:18,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:13:18,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:13:18,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:13:19,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:13:19,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:13:19,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135300071] [2024-06-27 18:13:19,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135300071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:13:19,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:13:19,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:13:19,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714808128] [2024-06-27 18:13:19,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:13:19,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:13:19,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:13:19,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:13:19,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:13:19,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:13:19,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 344 transitions, 4305 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:19,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:13:19,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:13:19,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:13:21,009 INFO L124 PetriNetUnfolderBase]: 3250/5702 cut-off events. [2024-06-27 18:13:21,009 INFO L125 PetriNetUnfolderBase]: For 212534/212661 co-relation queries the response was YES. [2024-06-27 18:13:21,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34435 conditions, 5702 events. 3250/5702 cut-off events. For 212534/212661 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 40919 event pairs, 962 based on Foata normal form. 53/5651 useless extension candidates. Maximal degree in co-relation 34259. Up to 4972 conditions per place. [2024-06-27 18:13:21,097 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 342 selfloop transitions, 33 changer transitions 0/383 dead transitions. [2024-06-27 18:13:21,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 383 transitions, 5257 flow [2024-06-27 18:13:21,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:13:21,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:13:21,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-27 18:13:21,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46756756756756757 [2024-06-27 18:13:21,098 INFO L175 Difference]: Start difference. First operand has 378 places, 344 transitions, 4305 flow. Second operand 10 states and 173 transitions. [2024-06-27 18:13:21,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 383 transitions, 5257 flow [2024-06-27 18:13:22,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 383 transitions, 5173 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-27 18:13:22,397 INFO L231 Difference]: Finished difference. Result has 382 places, 345 transitions, 4325 flow [2024-06-27 18:13:22,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4221, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4325, PETRI_PLACES=382, PETRI_TRANSITIONS=345} [2024-06-27 18:13:22,398 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 341 predicate places. [2024-06-27 18:13:22,398 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 345 transitions, 4325 flow [2024-06-27 18:13:22,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:22,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:13:22,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:13:22,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-27 18:13:22,399 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:13:22,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:13:22,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1922868605, now seen corresponding path program 12 times [2024-06-27 18:13:22,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:13:22,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335188794] [2024-06-27 18:13:22,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:13:22,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:13:22,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:13:23,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:13:23,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:13:23,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335188794] [2024-06-27 18:13:23,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335188794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:13:23,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:13:23,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:13:23,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826832218] [2024-06-27 18:13:23,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:13:23,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:13:23,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:13:23,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:13:23,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:13:23,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:13:23,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 345 transitions, 4325 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:23,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:13:23,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:13:23,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:13:25,503 INFO L124 PetriNetUnfolderBase]: 3272/5714 cut-off events. [2024-06-27 18:13:25,503 INFO L125 PetriNetUnfolderBase]: For 216274/216425 co-relation queries the response was YES. [2024-06-27 18:13:25,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34596 conditions, 5714 events. 3272/5714 cut-off events. For 216274/216425 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 40812 event pairs, 889 based on Foata normal form. 71/5692 useless extension candidates. Maximal degree in co-relation 34419. Up to 4717 conditions per place. [2024-06-27 18:13:25,590 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 334 selfloop transitions, 50 changer transitions 0/392 dead transitions. [2024-06-27 18:13:25,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 392 transitions, 5335 flow [2024-06-27 18:13:25,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:13:25,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:13:25,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 196 transitions. [2024-06-27 18:13:25,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48157248157248156 [2024-06-27 18:13:25,592 INFO L175 Difference]: Start difference. First operand has 382 places, 345 transitions, 4325 flow. Second operand 11 states and 196 transitions. [2024-06-27 18:13:25,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 392 transitions, 5335 flow [2024-06-27 18:13:26,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 392 transitions, 5241 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 18:13:26,735 INFO L231 Difference]: Finished difference. Result has 385 places, 347 transitions, 4376 flow [2024-06-27 18:13:26,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4231, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4376, PETRI_PLACES=385, PETRI_TRANSITIONS=347} [2024-06-27 18:13:26,736 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 344 predicate places. [2024-06-27 18:13:26,736 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 347 transitions, 4376 flow [2024-06-27 18:13:26,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:26,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:13:26,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:13:26,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-27 18:13:26,737 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:13:26,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:13:26,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1562881213, now seen corresponding path program 13 times [2024-06-27 18:13:26,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:13:26,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656310218] [2024-06-27 18:13:26,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:13:26,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:13:26,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:13:27,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:13:27,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:13:27,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656310218] [2024-06-27 18:13:27,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656310218] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:13:27,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:13:27,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:13:27,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877895307] [2024-06-27 18:13:27,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:13:27,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:13:27,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:13:27,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:13:27,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:13:27,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:13:27,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 347 transitions, 4376 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:27,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:13:27,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:13:27,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:13:29,136 INFO L124 PetriNetUnfolderBase]: 3295/5715 cut-off events. [2024-06-27 18:13:29,136 INFO L125 PetriNetUnfolderBase]: For 218291/218438 co-relation queries the response was YES. [2024-06-27 18:13:29,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34844 conditions, 5715 events. 3295/5715 cut-off events. For 218291/218438 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 40441 event pairs, 992 based on Foata normal form. 59/5675 useless extension candidates. Maximal degree in co-relation 34666. Up to 5000 conditions per place. [2024-06-27 18:13:29,229 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 347 selfloop transitions, 31 changer transitions 0/386 dead transitions. [2024-06-27 18:13:29,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 386 transitions, 5536 flow [2024-06-27 18:13:29,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:13:29,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:13:29,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-27 18:13:29,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4702702702702703 [2024-06-27 18:13:29,230 INFO L175 Difference]: Start difference. First operand has 385 places, 347 transitions, 4376 flow. Second operand 10 states and 174 transitions. [2024-06-27 18:13:29,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 386 transitions, 5536 flow [2024-06-27 18:13:30,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 386 transitions, 5415 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-27 18:13:30,680 INFO L231 Difference]: Finished difference. Result has 386 places, 349 transitions, 4362 flow [2024-06-27 18:13:30,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4255, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4362, PETRI_PLACES=386, PETRI_TRANSITIONS=349} [2024-06-27 18:13:30,680 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 345 predicate places. [2024-06-27 18:13:30,680 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 349 transitions, 4362 flow [2024-06-27 18:13:30,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:30,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:13:30,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:13:30,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-27 18:13:30,681 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:13:30,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:13:30,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1922874340, now seen corresponding path program 15 times [2024-06-27 18:13:30,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:13:30,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031239404] [2024-06-27 18:13:30,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:13:30,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:13:30,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:13:31,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:13:31,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:13:31,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031239404] [2024-06-27 18:13:31,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031239404] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:13:31,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:13:31,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:13:31,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922776913] [2024-06-27 18:13:31,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:13:31,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:13:31,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:13:31,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:13:31,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:13:31,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:13:31,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 349 transitions, 4362 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:31,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:13:31,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:13:31,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:13:33,044 INFO L124 PetriNetUnfolderBase]: 3309/5888 cut-off events. [2024-06-27 18:13:33,044 INFO L125 PetriNetUnfolderBase]: For 221607/221729 co-relation queries the response was YES. [2024-06-27 18:13:33,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35106 conditions, 5888 events. 3309/5888 cut-off events. For 221607/221729 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 42859 event pairs, 966 based on Foata normal form. 49/5843 useless extension candidates. Maximal degree in co-relation 34927. Up to 4903 conditions per place. [2024-06-27 18:13:33,135 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 335 selfloop transitions, 44 changer transitions 0/387 dead transitions. [2024-06-27 18:13:33,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 387 transitions, 5314 flow [2024-06-27 18:13:33,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:13:33,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:13:33,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2024-06-27 18:13:33,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4783783783783784 [2024-06-27 18:13:33,137 INFO L175 Difference]: Start difference. First operand has 386 places, 349 transitions, 4362 flow. Second operand 10 states and 177 transitions. [2024-06-27 18:13:33,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 387 transitions, 5314 flow [2024-06-27 18:13:34,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 387 transitions, 5213 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-27 18:13:34,631 INFO L231 Difference]: Finished difference. Result has 387 places, 350 transitions, 4383 flow [2024-06-27 18:13:34,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4261, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4383, PETRI_PLACES=387, PETRI_TRANSITIONS=350} [2024-06-27 18:13:34,631 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 346 predicate places. [2024-06-27 18:13:34,631 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 350 transitions, 4383 flow [2024-06-27 18:13:34,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:34,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:13:34,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:13:34,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-27 18:13:34,632 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:13:34,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:13:34,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1781112879, now seen corresponding path program 14 times [2024-06-27 18:13:34,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:13:34,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273468166] [2024-06-27 18:13:34,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:13:34,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:13:34,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:13:35,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:13:35,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:13:35,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273468166] [2024-06-27 18:13:35,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273468166] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:13:35,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:13:35,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:13:35,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741249932] [2024-06-27 18:13:35,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:13:35,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:13:35,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:13:35,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:13:35,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:13:35,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:13:35,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 350 transitions, 4383 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:35,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:13:35,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:13:35,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:13:37,425 INFO L124 PetriNetUnfolderBase]: 3357/5833 cut-off events. [2024-06-27 18:13:37,425 INFO L125 PetriNetUnfolderBase]: For 233477/233622 co-relation queries the response was YES. [2024-06-27 18:13:37,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35580 conditions, 5833 events. 3357/5833 cut-off events. For 233477/233622 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 41484 event pairs, 891 based on Foata normal form. 69/5812 useless extension candidates. Maximal degree in co-relation 35401. Up to 4475 conditions per place. [2024-06-27 18:13:37,521 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 322 selfloop transitions, 66 changer transitions 0/396 dead transitions. [2024-06-27 18:13:37,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 396 transitions, 6053 flow [2024-06-27 18:13:37,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:13:37,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:13:37,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-27 18:13:37,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027027027027027 [2024-06-27 18:13:37,522 INFO L175 Difference]: Start difference. First operand has 387 places, 350 transitions, 4383 flow. Second operand 10 states and 186 transitions. [2024-06-27 18:13:37,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 396 transitions, 6053 flow [2024-06-27 18:13:38,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 396 transitions, 5943 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 18:13:38,996 INFO L231 Difference]: Finished difference. Result has 389 places, 354 transitions, 4483 flow [2024-06-27 18:13:38,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4273, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4483, PETRI_PLACES=389, PETRI_TRANSITIONS=354} [2024-06-27 18:13:38,997 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 348 predicate places. [2024-06-27 18:13:38,997 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 354 transitions, 4483 flow [2024-06-27 18:13:38,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:38,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:13:38,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:13:38,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-27 18:13:38,997 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:13:38,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:13:38,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1924619255, now seen corresponding path program 15 times [2024-06-27 18:13:38,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:13:38,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298524769] [2024-06-27 18:13:38,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:13:38,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:13:39,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:13:40,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:13:40,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:13:40,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298524769] [2024-06-27 18:13:40,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298524769] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:13:40,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:13:40,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:13:40,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201208349] [2024-06-27 18:13:40,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:13:40,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:13:40,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:13:40,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:13:40,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:13:40,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:13:40,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 354 transitions, 4483 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:40,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:13:40,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:13:40,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:13:41,715 INFO L124 PetriNetUnfolderBase]: 3354/5798 cut-off events. [2024-06-27 18:13:41,716 INFO L125 PetriNetUnfolderBase]: For 224957/225084 co-relation queries the response was YES. [2024-06-27 18:13:41,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35331 conditions, 5798 events. 3354/5798 cut-off events. For 224957/225084 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 41115 event pairs, 1061 based on Foata normal form. 44/5743 useless extension candidates. Maximal degree in co-relation 35151. Up to 5233 conditions per place. [2024-06-27 18:13:41,805 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 351 selfloop transitions, 30 changer transitions 0/389 dead transitions. [2024-06-27 18:13:41,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 389 transitions, 5413 flow [2024-06-27 18:13:41,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:13:41,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:13:41,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-27 18:13:41,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4540540540540541 [2024-06-27 18:13:41,806 INFO L175 Difference]: Start difference. First operand has 389 places, 354 transitions, 4483 flow. Second operand 10 states and 168 transitions. [2024-06-27 18:13:41,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 389 transitions, 5413 flow [2024-06-27 18:13:43,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 389 transitions, 5285 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 18:13:43,202 INFO L231 Difference]: Finished difference. Result has 392 places, 356 transitions, 4465 flow [2024-06-27 18:13:43,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4355, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4465, PETRI_PLACES=392, PETRI_TRANSITIONS=356} [2024-06-27 18:13:43,203 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 351 predicate places. [2024-06-27 18:13:43,203 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 356 transitions, 4465 flow [2024-06-27 18:13:43,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:43,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:13:43,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:13:43,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-27 18:13:43,204 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:13:43,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:13:43,204 INFO L85 PathProgramCache]: Analyzing trace with hash 847301559, now seen corresponding path program 16 times [2024-06-27 18:13:43,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:13:43,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893023567] [2024-06-27 18:13:43,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:13:43,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:13:43,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:13:44,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:13:44,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:13:44,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893023567] [2024-06-27 18:13:44,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893023567] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:13:44,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:13:44,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:13:44,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003260868] [2024-06-27 18:13:44,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:13:44,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:13:44,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:13:44,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:13:44,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:13:44,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:13:44,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 356 transitions, 4465 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:44,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:13:44,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:13:44,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:13:46,170 INFO L124 PetriNetUnfolderBase]: 3349/5816 cut-off events. [2024-06-27 18:13:46,171 INFO L125 PetriNetUnfolderBase]: For 206647/206782 co-relation queries the response was YES. [2024-06-27 18:13:46,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34822 conditions, 5816 events. 3349/5816 cut-off events. For 206647/206782 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 41485 event pairs, 1021 based on Foata normal form. 47/5764 useless extension candidates. Maximal degree in co-relation 34642. Up to 5179 conditions per place. [2024-06-27 18:13:46,264 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 363 selfloop transitions, 27 changer transitions 0/398 dead transitions. [2024-06-27 18:13:46,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 398 transitions, 5429 flow [2024-06-27 18:13:46,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:13:46,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:13:46,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-06-27 18:13:46,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4643734643734644 [2024-06-27 18:13:46,266 INFO L175 Difference]: Start difference. First operand has 392 places, 356 transitions, 4465 flow. Second operand 11 states and 189 transitions. [2024-06-27 18:13:46,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 398 transitions, 5429 flow [2024-06-27 18:13:47,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 398 transitions, 5293 flow, removed 42 selfloop flow, removed 8 redundant places. [2024-06-27 18:13:47,486 INFO L231 Difference]: Finished difference. Result has 395 places, 356 transitions, 4388 flow [2024-06-27 18:13:47,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4329, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4388, PETRI_PLACES=395, PETRI_TRANSITIONS=356} [2024-06-27 18:13:47,487 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 354 predicate places. [2024-06-27 18:13:47,487 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 356 transitions, 4388 flow [2024-06-27 18:13:47,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:47,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:13:47,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:13:47,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-27 18:13:47,488 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:13:47,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:13:47,488 INFO L85 PathProgramCache]: Analyzing trace with hash 817850753, now seen corresponding path program 13 times [2024-06-27 18:13:47,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:13:47,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159912331] [2024-06-27 18:13:47,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:13:47,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:13:47,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:13:48,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:13:48,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:13:48,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159912331] [2024-06-27 18:13:48,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159912331] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:13:48,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:13:48,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:13:48,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769293762] [2024-06-27 18:13:48,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:13:48,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:13:48,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:13:48,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:13:48,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:13:48,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:13:48,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 356 transitions, 4388 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:48,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:13:48,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:13:48,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:13:50,286 INFO L124 PetriNetUnfolderBase]: 3366/5809 cut-off events. [2024-06-27 18:13:50,287 INFO L125 PetriNetUnfolderBase]: For 209750/209873 co-relation queries the response was YES. [2024-06-27 18:13:50,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34834 conditions, 5809 events. 3366/5809 cut-off events. For 209750/209873 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 41225 event pairs, 1084 based on Foata normal form. 35/5743 useless extension candidates. Maximal degree in co-relation 34653. Up to 5334 conditions per place. [2024-06-27 18:13:50,383 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 367 selfloop transitions, 18 changer transitions 0/393 dead transitions. [2024-06-27 18:13:50,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 393 transitions, 5355 flow [2024-06-27 18:13:50,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:13:50,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:13:50,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-27 18:13:50,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-06-27 18:13:50,385 INFO L175 Difference]: Start difference. First operand has 395 places, 356 transitions, 4388 flow. Second operand 10 states and 166 transitions. [2024-06-27 18:13:50,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 393 transitions, 5355 flow [2024-06-27 18:13:51,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 393 transitions, 5289 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 18:13:51,814 INFO L231 Difference]: Finished difference. Result has 396 places, 358 transitions, 4418 flow [2024-06-27 18:13:51,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4323, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4418, PETRI_PLACES=396, PETRI_TRANSITIONS=358} [2024-06-27 18:13:51,814 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 355 predicate places. [2024-06-27 18:13:51,814 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 358 transitions, 4418 flow [2024-06-27 18:13:51,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:51,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:13:51,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:13:51,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-27 18:13:51,815 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:13:51,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:13:51,815 INFO L85 PathProgramCache]: Analyzing trace with hash 817860053, now seen corresponding path program 14 times [2024-06-27 18:13:51,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:13:51,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876046170] [2024-06-27 18:13:51,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:13:51,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:13:51,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:13:53,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:13:53,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:13:53,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876046170] [2024-06-27 18:13:53,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876046170] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:13:53,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:13:53,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:13:53,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376957290] [2024-06-27 18:13:53,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:13:53,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:13:53,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:13:53,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:13:53,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:13:53,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:13:53,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 358 transitions, 4418 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:53,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:13:53,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:13:53,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:13:54,610 INFO L124 PetriNetUnfolderBase]: 3380/5835 cut-off events. [2024-06-27 18:13:54,610 INFO L125 PetriNetUnfolderBase]: For 214812/214935 co-relation queries the response was YES. [2024-06-27 18:13:54,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35069 conditions, 5835 events. 3380/5835 cut-off events. For 214812/214935 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 41383 event pairs, 1093 based on Foata normal form. 35/5768 useless extension candidates. Maximal degree in co-relation 34886. Up to 5356 conditions per place. [2024-06-27 18:13:54,709 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 369 selfloop transitions, 17 changer transitions 0/394 dead transitions. [2024-06-27 18:13:54,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 394 transitions, 5372 flow [2024-06-27 18:13:54,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:13:54,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:13:54,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-27 18:13:54,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-27 18:13:54,710 INFO L175 Difference]: Start difference. First operand has 396 places, 358 transitions, 4418 flow. Second operand 10 states and 165 transitions. [2024-06-27 18:13:54,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 394 transitions, 5372 flow [2024-06-27 18:13:56,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 394 transitions, 5312 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-27 18:13:56,246 INFO L231 Difference]: Finished difference. Result has 400 places, 359 transitions, 4434 flow [2024-06-27 18:13:56,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4358, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4434, PETRI_PLACES=400, PETRI_TRANSITIONS=359} [2024-06-27 18:13:56,247 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 359 predicate places. [2024-06-27 18:13:56,247 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 359 transitions, 4434 flow [2024-06-27 18:13:56,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:56,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:13:56,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:13:56,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-27 18:13:56,248 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:13:56,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:13:56,248 INFO L85 PathProgramCache]: Analyzing trace with hash 585394810, now seen corresponding path program 16 times [2024-06-27 18:13:56,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:13:56,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999713830] [2024-06-27 18:13:56,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:13:56,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:13:56,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:13:57,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:13:57,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:13:57,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999713830] [2024-06-27 18:13:57,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999713830] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:13:57,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:13:57,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:13:57,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671748781] [2024-06-27 18:13:57,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:13:57,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:13:57,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:13:57,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:13:57,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:13:57,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:13:57,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 359 transitions, 4434 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:57,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:13:57,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:13:57,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:13:59,167 INFO L124 PetriNetUnfolderBase]: 3489/6169 cut-off events. [2024-06-27 18:13:59,167 INFO L125 PetriNetUnfolderBase]: For 282020/282144 co-relation queries the response was YES. [2024-06-27 18:13:59,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37405 conditions, 6169 events. 3489/6169 cut-off events. For 282020/282144 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 45162 event pairs, 988 based on Foata normal form. 50/6121 useless extension candidates. Maximal degree in co-relation 37221. Up to 4798 conditions per place. [2024-06-27 18:13:59,266 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 348 selfloop transitions, 55 changer transitions 0/411 dead transitions. [2024-06-27 18:13:59,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 411 transitions, 5774 flow [2024-06-27 18:13:59,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:13:59,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:13:59,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 200 transitions. [2024-06-27 18:13:59,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4914004914004914 [2024-06-27 18:13:59,267 INFO L175 Difference]: Start difference. First operand has 400 places, 359 transitions, 4434 flow. Second operand 11 states and 200 transitions. [2024-06-27 18:13:59,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 411 transitions, 5774 flow [2024-06-27 18:14:01,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 411 transitions, 5708 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-27 18:14:01,245 INFO L231 Difference]: Finished difference. Result has 403 places, 361 transitions, 4544 flow [2024-06-27 18:14:01,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4368, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4544, PETRI_PLACES=403, PETRI_TRANSITIONS=361} [2024-06-27 18:14:01,246 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 362 predicate places. [2024-06-27 18:14:01,246 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 361 transitions, 4544 flow [2024-06-27 18:14:01,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:01,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:14:01,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:14:01,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-27 18:14:01,246 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:14:01,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:14:01,247 INFO L85 PathProgramCache]: Analyzing trace with hash 585398685, now seen corresponding path program 17 times [2024-06-27 18:14:01,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:14:01,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192815624] [2024-06-27 18:14:01,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:14:01,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:14:01,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:14:02,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:14:02,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:14:02,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192815624] [2024-06-27 18:14:02,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192815624] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:14:02,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:14:02,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:14:02,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582673622] [2024-06-27 18:14:02,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:14:02,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:14:02,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:14:02,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:14:02,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:14:02,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:14:02,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 361 transitions, 4544 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:02,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:14:02,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:14:02,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:14:04,156 INFO L124 PetriNetUnfolderBase]: 3485/6144 cut-off events. [2024-06-27 18:14:04,156 INFO L125 PetriNetUnfolderBase]: For 272951/273078 co-relation queries the response was YES. [2024-06-27 18:14:04,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37297 conditions, 6144 events. 3485/6144 cut-off events. For 272951/273078 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 44665 event pairs, 943 based on Foata normal form. 51/6102 useless extension candidates. Maximal degree in co-relation 37112. Up to 4716 conditions per place. [2024-06-27 18:14:04,242 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 322 selfloop transitions, 72 changer transitions 0/402 dead transitions. [2024-06-27 18:14:04,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 402 transitions, 5960 flow [2024-06-27 18:14:04,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:14:04,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:14:04,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-27 18:14:04,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4945945945945946 [2024-06-27 18:14:04,243 INFO L175 Difference]: Start difference. First operand has 403 places, 361 transitions, 4544 flow. Second operand 10 states and 183 transitions. [2024-06-27 18:14:04,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 402 transitions, 5960 flow [2024-06-27 18:14:05,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 402 transitions, 5805 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-27 18:14:05,971 INFO L231 Difference]: Finished difference. Result has 404 places, 361 transitions, 4541 flow [2024-06-27 18:14:05,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4389, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4541, PETRI_PLACES=404, PETRI_TRANSITIONS=361} [2024-06-27 18:14:05,972 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 363 predicate places. [2024-06-27 18:14:05,972 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 361 transitions, 4541 flow [2024-06-27 18:14:05,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:05,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:14:05,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:14:05,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-27 18:14:05,972 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:14:05,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:14:05,973 INFO L85 PathProgramCache]: Analyzing trace with hash 585398530, now seen corresponding path program 17 times [2024-06-27 18:14:05,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:14:05,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046964074] [2024-06-27 18:14:05,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:14:05,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:14:05,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:14:06,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:14:06,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:14:06,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046964074] [2024-06-27 18:14:06,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046964074] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:14:06,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:14:06,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:14:06,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261756852] [2024-06-27 18:14:06,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:14:06,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:14:06,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:14:06,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:14:06,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:14:06,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:14:06,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 361 transitions, 4541 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:06,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:14:06,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:14:06,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:14:08,504 INFO L124 PetriNetUnfolderBase]: 3504/6247 cut-off events. [2024-06-27 18:14:08,504 INFO L125 PetriNetUnfolderBase]: For 275772/275891 co-relation queries the response was YES. [2024-06-27 18:14:08,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37712 conditions, 6247 events. 3504/6247 cut-off events. For 275772/275891 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 46006 event pairs, 1019 based on Foata normal form. 51/6204 useless extension candidates. Maximal degree in co-relation 37528. Up to 5134 conditions per place. [2024-06-27 18:14:08,589 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 335 selfloop transitions, 57 changer transitions 0/400 dead transitions. [2024-06-27 18:14:08,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 400 transitions, 5517 flow [2024-06-27 18:14:08,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:14:08,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:14:08,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-06-27 18:14:08,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4810810810810811 [2024-06-27 18:14:08,590 INFO L175 Difference]: Start difference. First operand has 404 places, 361 transitions, 4541 flow. Second operand 10 states and 178 transitions. [2024-06-27 18:14:08,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 400 transitions, 5517 flow [2024-06-27 18:14:10,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 400 transitions, 5377 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-27 18:14:10,201 INFO L231 Difference]: Finished difference. Result has 404 places, 362 transitions, 4543 flow [2024-06-27 18:14:10,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4401, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4543, PETRI_PLACES=404, PETRI_TRANSITIONS=362} [2024-06-27 18:14:10,201 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 363 predicate places. [2024-06-27 18:14:10,202 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 362 transitions, 4543 flow [2024-06-27 18:14:10,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:10,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:14:10,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:14:10,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-27 18:14:10,202 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:14:10,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:14:10,203 INFO L85 PathProgramCache]: Analyzing trace with hash 585548415, now seen corresponding path program 18 times [2024-06-27 18:14:10,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:14:10,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872068400] [2024-06-27 18:14:10,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:14:10,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:14:10,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:14:11,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:14:11,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:14:11,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872068400] [2024-06-27 18:14:11,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872068400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:14:11,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:14:11,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:14:11,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624356332] [2024-06-27 18:14:11,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:14:11,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:14:11,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:14:11,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:14:11,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:14:11,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:14:11,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 362 transitions, 4543 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:11,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:14:11,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:14:11,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:14:13,549 INFO L124 PetriNetUnfolderBase]: 3493/6132 cut-off events. [2024-06-27 18:14:13,549 INFO L125 PetriNetUnfolderBase]: For 263428/263585 co-relation queries the response was YES. [2024-06-27 18:14:13,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37030 conditions, 6132 events. 3493/6132 cut-off events. For 263428/263585 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 44633 event pairs, 1003 based on Foata normal form. 71/6109 useless extension candidates. Maximal degree in co-relation 36846. Up to 5101 conditions per place. [2024-06-27 18:14:13,655 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 342 selfloop transitions, 56 changer transitions 0/406 dead transitions. [2024-06-27 18:14:13,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 406 transitions, 5541 flow [2024-06-27 18:14:13,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:14:13,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:14:13,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 193 transitions. [2024-06-27 18:14:13,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4742014742014742 [2024-06-27 18:14:13,657 INFO L175 Difference]: Start difference. First operand has 404 places, 362 transitions, 4543 flow. Second operand 11 states and 193 transitions. [2024-06-27 18:14:13,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 406 transitions, 5541 flow [2024-06-27 18:14:15,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 406 transitions, 5325 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-27 18:14:15,410 INFO L231 Difference]: Finished difference. Result has 407 places, 362 transitions, 4444 flow [2024-06-27 18:14:15,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4327, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4444, PETRI_PLACES=407, PETRI_TRANSITIONS=362} [2024-06-27 18:14:15,410 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 366 predicate places. [2024-06-27 18:14:15,410 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 362 transitions, 4444 flow [2024-06-27 18:14:15,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:15,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:14:15,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:14:15,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-27 18:14:15,411 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:14:15,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:14:15,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1922666795, now seen corresponding path program 19 times [2024-06-27 18:14:15,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:14:15,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339279426] [2024-06-27 18:14:15,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:14:15,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:14:15,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:14:16,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:14:16,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:14:16,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339279426] [2024-06-27 18:14:16,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339279426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:14:16,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:14:16,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:14:16,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893757425] [2024-06-27 18:14:16,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:14:16,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:14:16,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:14:16,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:14:16,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:14:16,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:14:16,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 362 transitions, 4444 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:16,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:14:16,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:14:16,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:14:18,662 INFO L124 PetriNetUnfolderBase]: 3490/6219 cut-off events. [2024-06-27 18:14:18,663 INFO L125 PetriNetUnfolderBase]: For 251717/251848 co-relation queries the response was YES. [2024-06-27 18:14:18,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36856 conditions, 6219 events. 3490/6219 cut-off events. For 251717/251848 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 46094 event pairs, 995 based on Foata normal form. 53/6179 useless extension candidates. Maximal degree in co-relation 36671. Up to 5015 conditions per place. [2024-06-27 18:14:18,761 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 340 selfloop transitions, 58 changer transitions 0/406 dead transitions. [2024-06-27 18:14:18,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 406 transitions, 5442 flow [2024-06-27 18:14:18,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:14:18,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:14:18,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 195 transitions. [2024-06-27 18:14:18,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47911547911547914 [2024-06-27 18:14:18,762 INFO L175 Difference]: Start difference. First operand has 407 places, 362 transitions, 4444 flow. Second operand 11 states and 195 transitions. [2024-06-27 18:14:18,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 406 transitions, 5442 flow [2024-06-27 18:14:19,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 406 transitions, 5305 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-27 18:14:19,994 INFO L231 Difference]: Finished difference. Result has 408 places, 362 transitions, 4428 flow [2024-06-27 18:14:19,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4307, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4428, PETRI_PLACES=408, PETRI_TRANSITIONS=362} [2024-06-27 18:14:19,995 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 367 predicate places. [2024-06-27 18:14:19,995 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 362 transitions, 4428 flow [2024-06-27 18:14:19,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:19,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:14:19,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:14:19,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-27 18:14:19,996 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:14:19,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:14:19,996 INFO L85 PathProgramCache]: Analyzing trace with hash 785059951, now seen corresponding path program 15 times [2024-06-27 18:14:19,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:14:19,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155034243] [2024-06-27 18:14:19,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:14:19,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:14:20,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:14:21,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:14:21,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:14:21,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155034243] [2024-06-27 18:14:21,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155034243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:14:21,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:14:21,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:14:21,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049563005] [2024-06-27 18:14:21,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:14:21,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:14:21,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:14:21,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:14:21,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:14:21,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:14:21,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 362 transitions, 4428 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:21,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:14:21,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:14:21,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:14:22,718 INFO L124 PetriNetUnfolderBase]: 3490/6086 cut-off events. [2024-06-27 18:14:22,718 INFO L125 PetriNetUnfolderBase]: For 241102/241210 co-relation queries the response was YES. [2024-06-27 18:14:22,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36346 conditions, 6086 events. 3490/6086 cut-off events. For 241102/241210 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 44003 event pairs, 1145 based on Foata normal form. 33/6016 useless extension candidates. Maximal degree in co-relation 36160. Up to 5491 conditions per place. [2024-06-27 18:14:22,818 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 369 selfloop transitions, 25 changer transitions 0/402 dead transitions. [2024-06-27 18:14:22,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 402 transitions, 5428 flow [2024-06-27 18:14:22,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:14:22,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:14:22,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-27 18:14:22,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4702702702702703 [2024-06-27 18:14:22,820 INFO L175 Difference]: Start difference. First operand has 408 places, 362 transitions, 4428 flow. Second operand 10 states and 174 transitions. [2024-06-27 18:14:22,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 402 transitions, 5428 flow [2024-06-27 18:14:24,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 402 transitions, 5246 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-27 18:14:24,606 INFO L231 Difference]: Finished difference. Result has 408 places, 363 transitions, 4340 flow [2024-06-27 18:14:24,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4246, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4340, PETRI_PLACES=408, PETRI_TRANSITIONS=363} [2024-06-27 18:14:24,607 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 367 predicate places. [2024-06-27 18:14:24,607 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 363 transitions, 4340 flow [2024-06-27 18:14:24,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:24,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:14:24,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:14:24,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-27 18:14:24,608 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:14:24,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:14:24,608 INFO L85 PathProgramCache]: Analyzing trace with hash 785052015, now seen corresponding path program 20 times [2024-06-27 18:14:24,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:14:24,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164713426] [2024-06-27 18:14:24,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:14:24,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:14:24,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:14:25,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:14:25,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:14:25,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164713426] [2024-06-27 18:14:25,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164713426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:14:25,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:14:25,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:14:25,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267778884] [2024-06-27 18:14:25,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:14:25,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:14:25,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:14:25,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:14:25,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:14:25,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:14:25,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 363 transitions, 4340 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:25,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:14:25,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:14:25,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:14:27,843 INFO L124 PetriNetUnfolderBase]: 3512/6123 cut-off events. [2024-06-27 18:14:27,843 INFO L125 PetriNetUnfolderBase]: For 243588/243699 co-relation queries the response was YES. [2024-06-27 18:14:27,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36220 conditions, 6123 events. 3512/6123 cut-off events. For 243588/243699 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 44126 event pairs, 1100 based on Foata normal form. 35/6057 useless extension candidates. Maximal degree in co-relation 36033. Up to 5335 conditions per place. [2024-06-27 18:14:27,941 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 367 selfloop transitions, 37 changer transitions 0/412 dead transitions. [2024-06-27 18:14:27,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 412 transitions, 5854 flow [2024-06-27 18:14:27,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:14:27,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:14:27,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 198 transitions. [2024-06-27 18:14:27,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 18:14:27,942 INFO L175 Difference]: Start difference. First operand has 408 places, 363 transitions, 4340 flow. Second operand 11 states and 198 transitions. [2024-06-27 18:14:27,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 412 transitions, 5854 flow [2024-06-27 18:14:29,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 412 transitions, 5770 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-27 18:14:29,448 INFO L231 Difference]: Finished difference. Result has 411 places, 365 transitions, 4367 flow [2024-06-27 18:14:29,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4256, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4367, PETRI_PLACES=411, PETRI_TRANSITIONS=365} [2024-06-27 18:14:29,449 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 370 predicate places. [2024-06-27 18:14:29,449 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 365 transitions, 4367 flow [2024-06-27 18:14:29,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:29,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:14:29,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:14:29,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-27 18:14:29,450 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:14:29,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:14:29,450 INFO L85 PathProgramCache]: Analyzing trace with hash 784850205, now seen corresponding path program 21 times [2024-06-27 18:14:29,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:14:29,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304652416] [2024-06-27 18:14:29,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:14:29,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:14:29,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:14:31,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:14:31,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:14:31,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304652416] [2024-06-27 18:14:31,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304652416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:14:31,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:14:31,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:14:31,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260394167] [2024-06-27 18:14:31,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:14:31,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:14:31,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:14:31,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:14:31,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:14:31,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:14:31,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 365 transitions, 4367 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:31,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:14:31,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:14:31,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:14:33,026 INFO L124 PetriNetUnfolderBase]: 3508/6124 cut-off events. [2024-06-27 18:14:33,026 INFO L125 PetriNetUnfolderBase]: For 231758/231866 co-relation queries the response was YES. [2024-06-27 18:14:33,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35906 conditions, 6124 events. 3508/6124 cut-off events. For 231758/231866 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 44311 event pairs, 1122 based on Foata normal form. 33/6057 useless extension candidates. Maximal degree in co-relation 35718. Up to 5424 conditions per place. [2024-06-27 18:14:33,128 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 370 selfloop transitions, 32 changer transitions 0/410 dead transitions. [2024-06-27 18:14:33,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 410 transitions, 5377 flow [2024-06-27 18:14:33,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:14:33,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:14:33,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 193 transitions. [2024-06-27 18:14:33,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4742014742014742 [2024-06-27 18:14:33,129 INFO L175 Difference]: Start difference. First operand has 411 places, 365 transitions, 4367 flow. Second operand 11 states and 193 transitions. [2024-06-27 18:14:33,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 410 transitions, 5377 flow [2024-06-27 18:14:34,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 410 transitions, 5269 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-27 18:14:34,846 INFO L231 Difference]: Finished difference. Result has 413 places, 365 transitions, 4328 flow [2024-06-27 18:14:34,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4259, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4328, PETRI_PLACES=413, PETRI_TRANSITIONS=365} [2024-06-27 18:14:34,847 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 372 predicate places. [2024-06-27 18:14:34,847 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 365 transitions, 4328 flow [2024-06-27 18:14:34,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:34,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:14:34,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:14:34,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-27 18:14:34,848 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:14:34,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:14:34,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1728934930, now seen corresponding path program 18 times [2024-06-27 18:14:34,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:14:34,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498696659] [2024-06-27 18:14:34,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:14:34,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:14:34,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:14:35,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:14:35,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:14:35,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498696659] [2024-06-27 18:14:35,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498696659] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:14:35,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:14:35,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:14:35,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022781832] [2024-06-27 18:14:35,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:14:35,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:14:35,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:14:35,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:14:35,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:14:35,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:14:35,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 365 transitions, 4328 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:35,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:14:35,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:14:35,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:14:37,832 INFO L124 PetriNetUnfolderBase]: 3544/6181 cut-off events. [2024-06-27 18:14:37,832 INFO L125 PetriNetUnfolderBase]: For 276081/276192 co-relation queries the response was YES. [2024-06-27 18:14:37,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34665 conditions, 6181 events. 3544/6181 cut-off events. For 276081/276192 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 44747 event pairs, 1120 based on Foata normal form. 53/6133 useless extension candidates. Maximal degree in co-relation 34476. Up to 5283 conditions per place. [2024-06-27 18:14:37,926 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 373 selfloop transitions, 28 changer transitions 0/409 dead transitions. [2024-06-27 18:14:37,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 409 transitions, 5370 flow [2024-06-27 18:14:37,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:14:37,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:14:37,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-27 18:14:37,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4891891891891892 [2024-06-27 18:14:37,928 INFO L175 Difference]: Start difference. First operand has 413 places, 365 transitions, 4328 flow. Second operand 10 states and 181 transitions. [2024-06-27 18:14:37,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 409 transitions, 5370 flow [2024-06-27 18:14:39,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 409 transitions, 5227 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-27 18:14:39,223 INFO L231 Difference]: Finished difference. Result has 412 places, 365 transitions, 4247 flow [2024-06-27 18:14:39,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4185, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4247, PETRI_PLACES=412, PETRI_TRANSITIONS=365} [2024-06-27 18:14:39,224 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 371 predicate places. [2024-06-27 18:14:39,224 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 365 transitions, 4247 flow [2024-06-27 18:14:39,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:39,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:14:39,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:14:39,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-27 18:14:39,225 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:14:39,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:14:39,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1728934775, now seen corresponding path program 22 times [2024-06-27 18:14:39,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:14:39,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666457935] [2024-06-27 18:14:39,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:14:39,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:14:39,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:14:40,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:14:40,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:14:40,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666457935] [2024-06-27 18:14:40,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666457935] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:14:40,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:14:40,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:14:40,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927736649] [2024-06-27 18:14:40,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:14:40,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:14:40,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:14:40,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:14:40,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:14:40,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:14:40,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 365 transitions, 4247 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:40,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:14:40,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:14:40,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:14:42,629 INFO L124 PetriNetUnfolderBase]: 3540/6187 cut-off events. [2024-06-27 18:14:42,629 INFO L125 PetriNetUnfolderBase]: For 139184/139295 co-relation queries the response was YES. [2024-06-27 18:14:42,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34002 conditions, 6187 events. 3540/6187 cut-off events. For 139184/139295 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 44858 event pairs, 1119 based on Foata normal form. 35/6120 useless extension candidates. Maximal degree in co-relation 33813. Up to 5401 conditions per place. [2024-06-27 18:14:42,722 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 364 selfloop transitions, 38 changer transitions 0/410 dead transitions. [2024-06-27 18:14:42,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 410 transitions, 5257 flow [2024-06-27 18:14:42,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:14:42,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:14:42,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 194 transitions. [2024-06-27 18:14:42,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47665847665847666 [2024-06-27 18:14:42,723 INFO L175 Difference]: Start difference. First operand has 412 places, 365 transitions, 4247 flow. Second operand 11 states and 194 transitions. [2024-06-27 18:14:42,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 410 transitions, 5257 flow [2024-06-27 18:14:43,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 410 transitions, 5185 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 18:14:43,842 INFO L231 Difference]: Finished difference. Result has 415 places, 365 transitions, 4256 flow [2024-06-27 18:14:43,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4175, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4256, PETRI_PLACES=415, PETRI_TRANSITIONS=365} [2024-06-27 18:14:43,843 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 374 predicate places. [2024-06-27 18:14:43,843 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 365 transitions, 4256 flow [2024-06-27 18:14:43,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:43,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:14:43,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:14:43,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-27 18:14:43,844 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:14:43,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:14:43,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1180659969, now seen corresponding path program 1 times [2024-06-27 18:14:43,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:14:43,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768121776] [2024-06-27 18:14:43,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:14:43,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:14:43,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:14:45,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:14:45,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:14:45,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768121776] [2024-06-27 18:14:45,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768121776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:14:45,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:14:45,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:14:45,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913189932] [2024-06-27 18:14:45,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:14:45,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:14:45,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:14:45,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:14:45,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:14:45,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:14:45,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 365 transitions, 4256 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:45,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:14:45,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:14:45,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:14:47,103 INFO L124 PetriNetUnfolderBase]: 3761/6745 cut-off events. [2024-06-27 18:14:47,104 INFO L125 PetriNetUnfolderBase]: For 258958/258963 co-relation queries the response was YES. [2024-06-27 18:14:47,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37761 conditions, 6745 events. 3761/6745 cut-off events. For 258958/258963 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 50806 event pairs, 1051 based on Foata normal form. 13/6699 useless extension candidates. Maximal degree in co-relation 37571. Up to 5004 conditions per place. [2024-06-27 18:14:47,205 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 397 selfloop transitions, 54 changer transitions 0/459 dead transitions. [2024-06-27 18:14:47,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 459 transitions, 6202 flow [2024-06-27 18:14:47,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:14:47,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:14:47,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 240 transitions. [2024-06-27 18:14:47,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.498960498960499 [2024-06-27 18:14:47,206 INFO L175 Difference]: Start difference. First operand has 415 places, 365 transitions, 4256 flow. Second operand 13 states and 240 transitions. [2024-06-27 18:14:47,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 459 transitions, 6202 flow [2024-06-27 18:14:48,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 459 transitions, 6085 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 18:14:48,636 INFO L231 Difference]: Finished difference. Result has 424 places, 378 transitions, 4580 flow [2024-06-27 18:14:48,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4139, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4580, PETRI_PLACES=424, PETRI_TRANSITIONS=378} [2024-06-27 18:14:48,637 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 383 predicate places. [2024-06-27 18:14:48,637 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 378 transitions, 4580 flow [2024-06-27 18:14:48,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:48,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:14:48,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:14:48,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-27 18:14:48,638 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:14:48,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:14:48,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1783720869, now seen corresponding path program 2 times [2024-06-27 18:14:48,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:14:48,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394875196] [2024-06-27 18:14:48,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:14:48,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:14:48,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:14:50,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:14:50,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:14:50,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394875196] [2024-06-27 18:14:50,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394875196] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:14:50,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:14:50,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:14:50,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064722064] [2024-06-27 18:14:50,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:14:50,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:14:50,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:14:50,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:14:50,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:14:50,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:14:50,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 378 transitions, 4580 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:50,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:14:50,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:14:50,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:14:52,615 INFO L124 PetriNetUnfolderBase]: 4010/7205 cut-off events. [2024-06-27 18:14:52,615 INFO L125 PetriNetUnfolderBase]: For 345898/345903 co-relation queries the response was YES. [2024-06-27 18:14:52,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42237 conditions, 7205 events. 4010/7205 cut-off events. For 345898/345903 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 55183 event pairs, 1136 based on Foata normal form. 13/7146 useless extension candidates. Maximal degree in co-relation 42040. Up to 5740 conditions per place. [2024-06-27 18:14:52,734 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 403 selfloop transitions, 58 changer transitions 0/469 dead transitions. [2024-06-27 18:14:52,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 469 transitions, 6522 flow [2024-06-27 18:14:52,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:14:52,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:14:52,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 243 transitions. [2024-06-27 18:14:52,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5051975051975052 [2024-06-27 18:14:52,735 INFO L175 Difference]: Start difference. First operand has 424 places, 378 transitions, 4580 flow. Second operand 13 states and 243 transitions. [2024-06-27 18:14:52,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 469 transitions, 6522 flow [2024-06-27 18:14:55,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 469 transitions, 6341 flow, removed 87 selfloop flow, removed 2 redundant places. [2024-06-27 18:14:55,020 INFO L231 Difference]: Finished difference. Result has 437 places, 387 transitions, 4710 flow [2024-06-27 18:14:55,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4417, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4710, PETRI_PLACES=437, PETRI_TRANSITIONS=387} [2024-06-27 18:14:55,020 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 396 predicate places. [2024-06-27 18:14:55,020 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 387 transitions, 4710 flow [2024-06-27 18:14:55,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:55,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:14:55,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:14:55,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-27 18:14:55,021 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:14:55,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:14:55,021 INFO L85 PathProgramCache]: Analyzing trace with hash 580435361, now seen corresponding path program 3 times [2024-06-27 18:14:55,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:14:55,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299416159] [2024-06-27 18:14:55,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:14:55,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:14:55,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:14:56,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:14:56,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:14:56,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299416159] [2024-06-27 18:14:56,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299416159] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:14:56,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:14:56,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:14:56,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362455094] [2024-06-27 18:14:56,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:14:56,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:14:56,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:14:56,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:14:56,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:14:56,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:14:56,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 387 transitions, 4710 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:56,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:14:56,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:14:56,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:14:58,625 INFO L124 PetriNetUnfolderBase]: 4067/7310 cut-off events. [2024-06-27 18:14:58,626 INFO L125 PetriNetUnfolderBase]: For 352171/352176 co-relation queries the response was YES. [2024-06-27 18:14:58,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42743 conditions, 7310 events. 4067/7310 cut-off events. For 352171/352176 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 56230 event pairs, 1244 based on Foata normal form. 15/7253 useless extension candidates. Maximal degree in co-relation 42542. Up to 6215 conditions per place. [2024-06-27 18:14:58,760 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 406 selfloop transitions, 42 changer transitions 0/456 dead transitions. [2024-06-27 18:14:58,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 456 transitions, 5958 flow [2024-06-27 18:14:58,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:14:58,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:14:58,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 236 transitions. [2024-06-27 18:14:58,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49064449064449067 [2024-06-27 18:14:58,762 INFO L175 Difference]: Start difference. First operand has 437 places, 387 transitions, 4710 flow. Second operand 13 states and 236 transitions. [2024-06-27 18:14:58,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 456 transitions, 5958 flow [2024-06-27 18:15:01,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 456 transitions, 5823 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-27 18:15:01,064 INFO L231 Difference]: Finished difference. Result has 442 places, 387 transitions, 4663 flow [2024-06-27 18:15:01,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4575, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4663, PETRI_PLACES=442, PETRI_TRANSITIONS=387} [2024-06-27 18:15:01,065 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 401 predicate places. [2024-06-27 18:15:01,065 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 387 transitions, 4663 flow [2024-06-27 18:15:01,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:15:01,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:15:01,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:15:01,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-27 18:15:01,066 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:15:01,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:15:01,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1783836189, now seen corresponding path program 4 times [2024-06-27 18:15:01,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:15:01,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223307726] [2024-06-27 18:15:01,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:15:01,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:15:01,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:15:02,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:15:02,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:15:02,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223307726] [2024-06-27 18:15:02,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223307726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:15:02,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:15:02,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:15:02,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114886946] [2024-06-27 18:15:02,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:15:02,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:15:02,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:15:02,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:15:02,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:15:02,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:15:02,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 387 transitions, 4663 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:15:02,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:15:02,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:15:02,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:15:04,768 INFO L124 PetriNetUnfolderBase]: 4065/7318 cut-off events. [2024-06-27 18:15:04,768 INFO L125 PetriNetUnfolderBase]: For 281108/281113 co-relation queries the response was YES. [2024-06-27 18:15:04,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41695 conditions, 7318 events. 4065/7318 cut-off events. For 281108/281113 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 56293 event pairs, 1157 based on Foata normal form. 13/7259 useless extension candidates. Maximal degree in co-relation 41493. Up to 5966 conditions per place. [2024-06-27 18:15:04,904 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 401 selfloop transitions, 59 changer transitions 0/468 dead transitions. [2024-06-27 18:15:04,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 468 transitions, 6222 flow [2024-06-27 18:15:04,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:15:04,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:15:04,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 240 transitions. [2024-06-27 18:15:04,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.498960498960499 [2024-06-27 18:15:04,905 INFO L175 Difference]: Start difference. First operand has 442 places, 387 transitions, 4663 flow. Second operand 13 states and 240 transitions. [2024-06-27 18:15:04,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 468 transitions, 6222 flow [2024-06-27 18:15:07,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 468 transitions, 6151 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-27 18:15:07,087 INFO L231 Difference]: Finished difference. Result has 448 places, 390 transitions, 4817 flow [2024-06-27 18:15:07,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4592, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4817, PETRI_PLACES=448, PETRI_TRANSITIONS=390} [2024-06-27 18:15:07,088 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 407 predicate places. [2024-06-27 18:15:07,088 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 390 transitions, 4817 flow [2024-06-27 18:15:07,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:15:07,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:15:07,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:15:07,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-27 18:15:07,088 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:15:07,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:15:07,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1569467211, now seen corresponding path program 5 times [2024-06-27 18:15:07,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:15:07,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097370520] [2024-06-27 18:15:07,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:15:07,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:15:07,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:15:08,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:15:08,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:15:08,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097370520] [2024-06-27 18:15:08,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097370520] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:15:08,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:15:08,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:15:08,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784477444] [2024-06-27 18:15:08,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:15:08,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:15:08,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:15:08,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:15:08,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:15:08,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:15:08,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 390 transitions, 4817 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:15:08,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:15:08,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:15:08,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:15:11,138 INFO L124 PetriNetUnfolderBase]: 4159/7488 cut-off events. [2024-06-27 18:15:11,139 INFO L125 PetriNetUnfolderBase]: For 304112/304117 co-relation queries the response was YES. [2024-06-27 18:15:11,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42829 conditions, 7488 events. 4159/7488 cut-off events. For 304112/304117 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 57950 event pairs, 1274 based on Foata normal form. 15/7431 useless extension candidates. Maximal degree in co-relation 42624. Up to 6523 conditions per place. [2024-06-27 18:15:11,249 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 415 selfloop transitions, 30 changer transitions 0/453 dead transitions. [2024-06-27 18:15:11,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 453 transitions, 6045 flow [2024-06-27 18:15:11,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:15:11,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:15:11,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 214 transitions. [2024-06-27 18:15:11,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.481981981981982 [2024-06-27 18:15:11,251 INFO L175 Difference]: Start difference. First operand has 448 places, 390 transitions, 4817 flow. Second operand 12 states and 214 transitions. [2024-06-27 18:15:11,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 453 transitions, 6045 flow [2024-06-27 18:15:13,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 453 transitions, 5892 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-27 18:15:13,257 INFO L231 Difference]: Finished difference. Result has 452 places, 392 transitions, 4757 flow [2024-06-27 18:15:13,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4668, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4757, PETRI_PLACES=452, PETRI_TRANSITIONS=392} [2024-06-27 18:15:13,258 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 411 predicate places. [2024-06-27 18:15:13,258 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 392 transitions, 4757 flow [2024-06-27 18:15:13,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:15:13,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:15:13,258 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:15:13,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-27 18:15:13,258 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:15:13,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:15:13,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1569462561, now seen corresponding path program 6 times [2024-06-27 18:15:13,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:15:13,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691199373] [2024-06-27 18:15:13,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:15:13,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:15:13,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:15:14,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:15:14,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:15:14,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691199373] [2024-06-27 18:15:14,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691199373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:15:14,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:15:14,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:15:14,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379657911] [2024-06-27 18:15:14,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:15:14,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:15:14,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:15:14,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:15:14,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:15:14,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:15:14,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 392 transitions, 4757 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:15:14,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:15:14,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:15:14,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:15:16,964 INFO L124 PetriNetUnfolderBase]: 4292/7745 cut-off events. [2024-06-27 18:15:16,965 INFO L125 PetriNetUnfolderBase]: For 371803/371808 co-relation queries the response was YES. [2024-06-27 18:15:17,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45124 conditions, 7745 events. 4292/7745 cut-off events. For 371803/371808 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 60513 event pairs, 1240 based on Foata normal form. 13/7686 useless extension candidates. Maximal degree in co-relation 44917. Up to 6421 conditions per place. [2024-06-27 18:15:17,094 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 412 selfloop transitions, 44 changer transitions 0/464 dead transitions. [2024-06-27 18:15:17,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 464 transitions, 6457 flow [2024-06-27 18:15:17,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:15:17,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:15:17,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 217 transitions. [2024-06-27 18:15:17,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48873873873873874 [2024-06-27 18:15:17,096 INFO L175 Difference]: Start difference. First operand has 452 places, 392 transitions, 4757 flow. Second operand 12 states and 217 transitions. [2024-06-27 18:15:17,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 464 transitions, 6457 flow [2024-06-27 18:15:19,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 464 transitions, 6394 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 18:15:19,587 INFO L231 Difference]: Finished difference. Result has 458 places, 397 transitions, 4933 flow [2024-06-27 18:15:19,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4694, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4933, PETRI_PLACES=458, PETRI_TRANSITIONS=397} [2024-06-27 18:15:19,587 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 417 predicate places. [2024-06-27 18:15:19,587 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 397 transitions, 4933 flow [2024-06-27 18:15:19,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:15:19,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:15:19,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:15:19,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-27 18:15:19,588 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:15:19,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:15:19,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1899304989, now seen corresponding path program 7 times [2024-06-27 18:15:19,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:15:19,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784520393] [2024-06-27 18:15:19,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:15:19,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:15:19,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:15:21,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:15:21,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:15:21,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784520393] [2024-06-27 18:15:21,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784520393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:15:21,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:15:21,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:15:21,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524877276] [2024-06-27 18:15:21,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:15:21,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:15:21,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:15:21,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:15:21,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:15:21,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:15:21,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 397 transitions, 4933 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:15:21,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:15:21,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:15:21,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:15:23,712 INFO L124 PetriNetUnfolderBase]: 4347/7849 cut-off events. [2024-06-27 18:15:23,712 INFO L125 PetriNetUnfolderBase]: For 380590/380595 co-relation queries the response was YES. [2024-06-27 18:15:23,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44662 conditions, 7849 events. 4347/7849 cut-off events. For 380590/380595 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 61572 event pairs, 1346 based on Foata normal form. 23/7800 useless extension candidates. Maximal degree in co-relation 44451. Up to 6814 conditions per place. [2024-06-27 18:15:23,832 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 423 selfloop transitions, 27 changer transitions 0/458 dead transitions. [2024-06-27 18:15:23,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 458 transitions, 6163 flow [2024-06-27 18:15:23,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:15:23,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:15:23,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 212 transitions. [2024-06-27 18:15:23,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774774774774775 [2024-06-27 18:15:23,834 INFO L175 Difference]: Start difference. First operand has 458 places, 397 transitions, 4933 flow. Second operand 12 states and 212 transitions. [2024-06-27 18:15:23,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 458 transitions, 6163 flow [2024-06-27 18:15:25,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 458 transitions, 6036 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-27 18:15:25,713 INFO L231 Difference]: Finished difference. Result has 461 places, 397 transitions, 4865 flow [2024-06-27 18:15:25,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4806, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4865, PETRI_PLACES=461, PETRI_TRANSITIONS=397} [2024-06-27 18:15:25,728 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 420 predicate places. [2024-06-27 18:15:25,728 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 397 transitions, 4865 flow [2024-06-27 18:15:25,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:15:25,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:15:25,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:15:25,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-27 18:15:25,729 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:15:25,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:15:25,729 INFO L85 PathProgramCache]: Analyzing trace with hash 32076407, now seen corresponding path program 8 times [2024-06-27 18:15:25,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:15:25,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538895871] [2024-06-27 18:15:25,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:15:25,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:15:25,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:15:26,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:15:26,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:15:26,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538895871] [2024-06-27 18:15:26,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538895871] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:15:26,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:15:26,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:15:26,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143763732] [2024-06-27 18:15:26,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:15:26,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:15:26,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:15:26,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:15:26,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:15:27,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:15:27,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 397 transitions, 4865 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:15:27,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:15:27,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:15:27,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:15:29,333 INFO L124 PetriNetUnfolderBase]: 4380/7914 cut-off events. [2024-06-27 18:15:29,333 INFO L125 PetriNetUnfolderBase]: For 304456/304461 co-relation queries the response was YES. [2024-06-27 18:15:29,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44494 conditions, 7914 events. 4380/7914 cut-off events. For 304456/304461 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 62342 event pairs, 1286 based on Foata normal form. 15/7857 useless extension candidates. Maximal degree in co-relation 44284. Up to 6831 conditions per place. [2024-06-27 18:15:29,480 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 404 selfloop transitions, 53 changer transitions 0/465 dead transitions. [2024-06-27 18:15:29,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 465 transitions, 6312 flow [2024-06-27 18:15:29,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:15:29,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:15:29,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 216 transitions. [2024-06-27 18:15:29,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 18:15:29,482 INFO L175 Difference]: Start difference. First operand has 461 places, 397 transitions, 4865 flow. Second operand 12 states and 216 transitions. [2024-06-27 18:15:29,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 465 transitions, 6312 flow [2024-06-27 18:15:31,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 465 transitions, 6261 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 18:15:31,589 INFO L231 Difference]: Finished difference. Result has 465 places, 402 transitions, 5094 flow [2024-06-27 18:15:31,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4814, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5094, PETRI_PLACES=465, PETRI_TRANSITIONS=402} [2024-06-27 18:15:31,599 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 424 predicate places. [2024-06-27 18:15:31,599 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 402 transitions, 5094 flow [2024-06-27 18:15:31,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:15:31,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:15:31,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:15:31,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-27 18:15:31,599 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:15:31,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:15:31,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1894658709, now seen corresponding path program 9 times [2024-06-27 18:15:31,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:15:31,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40576165] [2024-06-27 18:15:31,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:15:31,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:15:31,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:15:32,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:15:32,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:15:32,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40576165] [2024-06-27 18:15:32,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40576165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:15:32,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:15:32,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:15:32,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090860628] [2024-06-27 18:15:32,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:15:32,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:15:32,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:15:32,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:15:32,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:15:32,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:15:32,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 402 transitions, 5094 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:15:32,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:15:32,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:15:32,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:15:35,021 INFO L124 PetriNetUnfolderBase]: 4472/8106 cut-off events. [2024-06-27 18:15:35,022 INFO L125 PetriNetUnfolderBase]: For 296305/296310 co-relation queries the response was YES. [2024-06-27 18:15:35,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45656 conditions, 8106 events. 4472/8106 cut-off events. For 296305/296310 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 64182 event pairs, 1331 based on Foata normal form. 13/8047 useless extension candidates. Maximal degree in co-relation 45443. Up to 6040 conditions per place. [2024-06-27 18:15:35,161 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 407 selfloop transitions, 46 changer transitions 0/461 dead transitions. [2024-06-27 18:15:35,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 461 transitions, 6336 flow [2024-06-27 18:15:35,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:15:35,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:15:35,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 202 transitions. [2024-06-27 18:15:35,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4963144963144963 [2024-06-27 18:15:35,162 INFO L175 Difference]: Start difference. First operand has 465 places, 402 transitions, 5094 flow. Second operand 11 states and 202 transitions. [2024-06-27 18:15:35,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 461 transitions, 6336 flow [2024-06-27 18:15:37,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 461 transitions, 6198 flow, removed 45 selfloop flow, removed 7 redundant places. [2024-06-27 18:15:37,984 INFO L231 Difference]: Finished difference. Result has 469 places, 402 transitions, 5053 flow [2024-06-27 18:15:37,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4956, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5053, PETRI_PLACES=469, PETRI_TRANSITIONS=402} [2024-06-27 18:15:37,984 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 428 predicate places. [2024-06-27 18:15:37,984 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 402 transitions, 5053 flow [2024-06-27 18:15:37,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:15:37,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:15:37,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:15:37,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-27 18:15:37,985 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:15:37,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:15:37,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1564878591, now seen corresponding path program 10 times [2024-06-27 18:15:37,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:15:37,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237421459] [2024-06-27 18:15:37,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:15:37,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:15:37,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:15:39,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:15:39,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:15:39,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237421459] [2024-06-27 18:15:39,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237421459] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:15:39,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:15:39,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:15:39,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699684] [2024-06-27 18:15:39,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:15:39,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:15:39,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:15:39,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:15:39,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:15:39,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:15:39,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 402 transitions, 5053 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:15:39,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:15:39,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:15:39,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:15:41,918 INFO L124 PetriNetUnfolderBase]: 4486/8156 cut-off events. [2024-06-27 18:15:41,918 INFO L125 PetriNetUnfolderBase]: For 234652/234657 co-relation queries the response was YES. [2024-06-27 18:15:42,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44926 conditions, 8156 events. 4486/8156 cut-off events. For 234652/234657 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 64872 event pairs, 1367 based on Foata normal form. 13/8097 useless extension candidates. Maximal degree in co-relation 44712. Up to 5670 conditions per place. [2024-06-27 18:15:42,063 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 411 selfloop transitions, 43 changer transitions 0/462 dead transitions. [2024-06-27 18:15:42,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 462 transitions, 6299 flow [2024-06-27 18:15:42,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:15:42,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:15:42,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 203 transitions. [2024-06-27 18:15:42,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4987714987714988 [2024-06-27 18:15:42,064 INFO L175 Difference]: Start difference. First operand has 469 places, 402 transitions, 5053 flow. Second operand 11 states and 203 transitions. [2024-06-27 18:15:42,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 462 transitions, 6299 flow [2024-06-27 18:15:44,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 462 transitions, 6206 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-27 18:15:44,102 INFO L231 Difference]: Finished difference. Result has 471 places, 402 transitions, 5050 flow [2024-06-27 18:15:44,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4960, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5050, PETRI_PLACES=471, PETRI_TRANSITIONS=402} [2024-06-27 18:15:44,103 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 430 predicate places. [2024-06-27 18:15:44,103 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 402 transitions, 5050 flow [2024-06-27 18:15:44,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:15:44,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:15:44,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:15:44,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-27 18:15:44,105 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:15:44,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:15:44,105 INFO L85 PathProgramCache]: Analyzing trace with hash 690658585, now seen corresponding path program 11 times [2024-06-27 18:15:44,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:15:44,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326520584] [2024-06-27 18:15:44,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:15:44,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:15:44,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:15:45,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:15:45,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:15:45,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326520584] [2024-06-27 18:15:45,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326520584] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:15:45,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:15:45,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:15:45,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742915213] [2024-06-27 18:15:45,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:15:45,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:15:45,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:15:45,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:15:45,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:15:45,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:15:45,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 402 transitions, 5050 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:15:45,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:15:45,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:15:45,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:15:47,806 INFO L124 PetriNetUnfolderBase]: 4714/8360 cut-off events. [2024-06-27 18:15:47,806 INFO L125 PetriNetUnfolderBase]: For 331590/331682 co-relation queries the response was YES. [2024-06-27 18:15:47,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48544 conditions, 8360 events. 4714/8360 cut-off events. For 331590/331682 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 65517 event pairs, 736 based on Foata normal form. 67/8331 useless extension candidates. Maximal degree in co-relation 48329. Up to 5916 conditions per place. [2024-06-27 18:15:47,952 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 345 selfloop transitions, 147 changer transitions 0/500 dead transitions. [2024-06-27 18:15:47,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 500 transitions, 7497 flow [2024-06-27 18:15:47,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:15:47,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:15:47,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 237 transitions. [2024-06-27 18:15:47,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5337837837837838 [2024-06-27 18:15:47,953 INFO L175 Difference]: Start difference. First operand has 471 places, 402 transitions, 5050 flow. Second operand 12 states and 237 transitions. [2024-06-27 18:15:47,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 500 transitions, 7497 flow [2024-06-27 18:15:51,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 500 transitions, 7413 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 18:15:51,626 INFO L231 Difference]: Finished difference. Result has 479 places, 422 transitions, 5853 flow [2024-06-27 18:15:51,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4966, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5853, PETRI_PLACES=479, PETRI_TRANSITIONS=422} [2024-06-27 18:15:51,627 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 438 predicate places. [2024-06-27 18:15:51,627 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 422 transitions, 5853 flow [2024-06-27 18:15:51,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:15:51,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:15:51,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:15:51,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-27 18:15:51,627 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:15:51,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:15:51,628 INFO L85 PathProgramCache]: Analyzing trace with hash 690663235, now seen corresponding path program 12 times [2024-06-27 18:15:51,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:15:51,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001139857] [2024-06-27 18:15:51,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:15:51,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:15:51,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:15:53,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:15:53,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:15:53,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001139857] [2024-06-27 18:15:53,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001139857] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:15:53,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:15:53,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:15:53,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123306279] [2024-06-27 18:15:53,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:15:53,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:15:53,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:15:53,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:15:53,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:15:53,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:15:53,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 422 transitions, 5853 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:15:53,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:15:53,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:15:53,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:15:55,763 INFO L124 PetriNetUnfolderBase]: 4791/8603 cut-off events. [2024-06-27 18:15:55,763 INFO L125 PetriNetUnfolderBase]: For 385554/385654 co-relation queries the response was YES. [2024-06-27 18:15:55,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50251 conditions, 8603 events. 4791/8603 cut-off events. For 385554/385654 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 68602 event pairs, 1127 based on Foata normal form. 86/8594 useless extension candidates. Maximal degree in co-relation 50030. Up to 5495 conditions per place. [2024-06-27 18:15:55,922 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 324 selfloop transitions, 150 changer transitions 0/482 dead transitions. [2024-06-27 18:15:55,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 482 transitions, 7162 flow [2024-06-27 18:15:55,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:15:55,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:15:55,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 218 transitions. [2024-06-27 18:15:55,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5356265356265356 [2024-06-27 18:15:55,924 INFO L175 Difference]: Start difference. First operand has 479 places, 422 transitions, 5853 flow. Second operand 11 states and 218 transitions. [2024-06-27 18:15:55,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 482 transitions, 7162 flow [2024-06-27 18:15:58,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 482 transitions, 6808 flow, removed 164 selfloop flow, removed 3 redundant places. [2024-06-27 18:15:58,686 INFO L231 Difference]: Finished difference. Result has 487 places, 423 transitions, 5849 flow [2024-06-27 18:15:58,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5523, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5849, PETRI_PLACES=487, PETRI_TRANSITIONS=423} [2024-06-27 18:15:58,686 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 446 predicate places. [2024-06-27 18:15:58,687 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 423 transitions, 5849 flow [2024-06-27 18:15:58,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:15:58,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:15:58,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:15:58,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-27 18:15:58,687 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:15:58,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:15:58,688 INFO L85 PathProgramCache]: Analyzing trace with hash 695304865, now seen corresponding path program 13 times [2024-06-27 18:15:58,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:15:58,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788103766] [2024-06-27 18:15:58,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:15:58,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:15:58,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:00,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:00,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:00,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788103766] [2024-06-27 18:16:00,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788103766] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:00,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:00,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:16:00,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503935845] [2024-06-27 18:16:00,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:00,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:16:00,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:00,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:16:00,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:16:00,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:16:00,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 423 transitions, 5849 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:00,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:00,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:16:00,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:02,891 INFO L124 PetriNetUnfolderBase]: 4859/8731 cut-off events. [2024-06-27 18:16:02,892 INFO L125 PetriNetUnfolderBase]: For 278100/278198 co-relation queries the response was YES. [2024-06-27 18:16:03,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50634 conditions, 8731 events. 4859/8731 cut-off events. For 278100/278198 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 69764 event pairs, 1151 based on Foata normal form. 74/8710 useless extension candidates. Maximal degree in co-relation 50412. Up to 5465 conditions per place. [2024-06-27 18:16:03,028 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 325 selfloop transitions, 148 changer transitions 0/481 dead transitions. [2024-06-27 18:16:03,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 481 transitions, 7112 flow [2024-06-27 18:16:03,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:16:03,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:16:03,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 216 transitions. [2024-06-27 18:16:03,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5307125307125307 [2024-06-27 18:16:03,029 INFO L175 Difference]: Start difference. First operand has 487 places, 423 transitions, 5849 flow. Second operand 11 states and 216 transitions. [2024-06-27 18:16:03,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 481 transitions, 7112 flow [2024-06-27 18:16:05,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 481 transitions, 6808 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-27 18:16:05,687 INFO L231 Difference]: Finished difference. Result has 489 places, 423 transitions, 5850 flow [2024-06-27 18:16:05,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5545, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5850, PETRI_PLACES=489, PETRI_TRANSITIONS=423} [2024-06-27 18:16:05,687 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 448 predicate places. [2024-06-27 18:16:05,687 INFO L495 AbstractCegarLoop]: Abstraction has has 489 places, 423 transitions, 5850 flow [2024-06-27 18:16:05,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:05,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:05,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:05,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-27 18:16:05,688 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:05,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:05,688 INFO L85 PathProgramCache]: Analyzing trace with hash 690543265, now seen corresponding path program 14 times [2024-06-27 18:16:05,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:05,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755241980] [2024-06-27 18:16:05,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:05,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:05,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:07,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:07,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:07,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755241980] [2024-06-27 18:16:07,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755241980] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:07,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:07,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:16:07,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235682788] [2024-06-27 18:16:07,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:07,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:16:07,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:07,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:16:07,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:16:07,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:16:07,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 423 transitions, 5850 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:07,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:07,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:16:07,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:10,339 INFO L124 PetriNetUnfolderBase]: 5058/9022 cut-off events. [2024-06-27 18:16:10,340 INFO L125 PetriNetUnfolderBase]: For 356446/356572 co-relation queries the response was YES. [2024-06-27 18:16:10,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53761 conditions, 9022 events. 5058/9022 cut-off events. For 356446/356572 co-relation queries the response was YES. Maximal size of possible extension queue 618. Compared 72140 event pairs, 834 based on Foata normal form. 95/9017 useless extension candidates. Maximal degree in co-relation 53538. Up to 5738 conditions per place. [2024-06-27 18:16:10,506 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 349 selfloop transitions, 147 changer transitions 0/504 dead transitions. [2024-06-27 18:16:10,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 504 transitions, 7982 flow [2024-06-27 18:16:10,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:16:10,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:16:10,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 236 transitions. [2024-06-27 18:16:10,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5315315315315315 [2024-06-27 18:16:10,508 INFO L175 Difference]: Start difference. First operand has 489 places, 423 transitions, 5850 flow. Second operand 12 states and 236 transitions. [2024-06-27 18:16:10,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 504 transitions, 7982 flow [2024-06-27 18:16:13,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 504 transitions, 7693 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 18:16:13,910 INFO L231 Difference]: Finished difference. Result has 494 places, 425 transitions, 5971 flow [2024-06-27 18:16:13,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5561, PETRI_DIFFERENCE_MINUEND_PLACES=480, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5971, PETRI_PLACES=494, PETRI_TRANSITIONS=425} [2024-06-27 18:16:13,910 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 453 predicate places. [2024-06-27 18:16:13,910 INFO L495 AbstractCegarLoop]: Abstraction has has 494 places, 425 transitions, 5971 flow [2024-06-27 18:16:13,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:13,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:13,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:13,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-27 18:16:13,911 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:13,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:13,911 INFO L85 PathProgramCache]: Analyzing trace with hash 695127235, now seen corresponding path program 15 times [2024-06-27 18:16:13,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:13,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024001359] [2024-06-27 18:16:13,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:13,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:13,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:15,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:15,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:15,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024001359] [2024-06-27 18:16:15,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024001359] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:15,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:15,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:16:15,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962779927] [2024-06-27 18:16:15,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:15,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:16:15,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:15,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:16:15,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:16:15,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:16:15,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 425 transitions, 5971 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:15,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:15,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:16:15,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:18,405 INFO L124 PetriNetUnfolderBase]: 5110/9125 cut-off events. [2024-06-27 18:16:18,405 INFO L125 PetriNetUnfolderBase]: For 365151/365277 co-relation queries the response was YES. [2024-06-27 18:16:18,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54379 conditions, 9125 events. 5110/9125 cut-off events. For 365151/365277 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 73520 event pairs, 870 based on Foata normal form. 95/9120 useless extension candidates. Maximal degree in co-relation 54153. Up to 6673 conditions per place. [2024-06-27 18:16:18,549 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 365 selfloop transitions, 137 changer transitions 0/510 dead transitions. [2024-06-27 18:16:18,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 510 transitions, 7906 flow [2024-06-27 18:16:18,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:16:18,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:16:18,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 235 transitions. [2024-06-27 18:16:18,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5292792792792793 [2024-06-27 18:16:18,550 INFO L175 Difference]: Start difference. First operand has 494 places, 425 transitions, 5971 flow. Second operand 12 states and 235 transitions. [2024-06-27 18:16:18,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 510 transitions, 7906 flow [2024-06-27 18:16:21,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 510 transitions, 7578 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-27 18:16:21,892 INFO L231 Difference]: Finished difference. Result has 501 places, 432 transitions, 6112 flow [2024-06-27 18:16:21,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5651, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6112, PETRI_PLACES=501, PETRI_TRANSITIONS=432} [2024-06-27 18:16:21,893 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 460 predicate places. [2024-06-27 18:16:21,893 INFO L495 AbstractCegarLoop]: Abstraction has has 501 places, 432 transitions, 6112 flow [2024-06-27 18:16:21,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:21,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:21,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:21,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-27 18:16:21,893 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:21,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:21,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1420722301, now seen corresponding path program 16 times [2024-06-27 18:16:21,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:21,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947062773] [2024-06-27 18:16:21,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:21,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:21,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:23,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:23,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:23,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947062773] [2024-06-27 18:16:23,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947062773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:23,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:23,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:16:23,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21169870] [2024-06-27 18:16:23,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:23,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:16:23,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:23,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:16:23,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:16:24,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:16:24,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 432 transitions, 6112 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:24,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:24,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:16:24,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:27,778 INFO L124 PetriNetUnfolderBase]: 5196/9298 cut-off events. [2024-06-27 18:16:27,778 INFO L125 PetriNetUnfolderBase]: For 411406/411504 co-relation queries the response was YES. [2024-06-27 18:16:27,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55551 conditions, 9298 events. 5196/9298 cut-off events. For 411406/411504 co-relation queries the response was YES. Maximal size of possible extension queue 638. Compared 75598 event pairs, 1209 based on Foata normal form. 76/9275 useless extension candidates. Maximal degree in co-relation 55321. Up to 7495 conditions per place. [2024-06-27 18:16:27,925 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 391 selfloop transitions, 96 changer transitions 0/495 dead transitions. [2024-06-27 18:16:27,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 512 places, 495 transitions, 7430 flow [2024-06-27 18:16:27,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:16:27,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:16:27,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 227 transitions. [2024-06-27 18:16:27,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5112612612612613 [2024-06-27 18:16:27,926 INFO L175 Difference]: Start difference. First operand has 501 places, 432 transitions, 6112 flow. Second operand 12 states and 227 transitions. [2024-06-27 18:16:27,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 512 places, 495 transitions, 7430 flow [2024-06-27 18:16:31,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 495 transitions, 7109 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-27 18:16:31,902 INFO L231 Difference]: Finished difference. Result has 506 places, 433 transitions, 6009 flow [2024-06-27 18:16:31,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5791, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6009, PETRI_PLACES=506, PETRI_TRANSITIONS=433} [2024-06-27 18:16:31,902 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 465 predicate places. [2024-06-27 18:16:31,903 INFO L495 AbstractCegarLoop]: Abstraction has has 506 places, 433 transitions, 6009 flow [2024-06-27 18:16:31,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:31,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:31,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:31,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-27 18:16:31,903 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:31,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:31,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1420549321, now seen corresponding path program 17 times [2024-06-27 18:16:31,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:31,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453270401] [2024-06-27 18:16:31,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:31,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:31,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:32,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:32,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:32,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453270401] [2024-06-27 18:16:32,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453270401] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:32,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:32,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:16:32,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532188001] [2024-06-27 18:16:32,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:32,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:16:32,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:32,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:16:32,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:16:33,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:16:33,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 433 transitions, 6009 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:33,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:33,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:16:33,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:36,264 INFO L124 PetriNetUnfolderBase]: 5268/9519 cut-off events. [2024-06-27 18:16:36,264 INFO L125 PetriNetUnfolderBase]: For 395766/395864 co-relation queries the response was YES. [2024-06-27 18:16:36,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56156 conditions, 9519 events. 5268/9519 cut-off events. For 395766/395864 co-relation queries the response was YES. Maximal size of possible extension queue 649. Compared 78090 event pairs, 1328 based on Foata normal form. 74/9494 useless extension candidates. Maximal degree in co-relation 55925. Up to 6548 conditions per place. [2024-06-27 18:16:36,420 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 325 selfloop transitions, 156 changer transitions 0/489 dead transitions. [2024-06-27 18:16:36,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 489 transitions, 7267 flow [2024-06-27 18:16:36,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:16:36,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:16:36,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 215 transitions. [2024-06-27 18:16:36,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5282555282555282 [2024-06-27 18:16:36,422 INFO L175 Difference]: Start difference. First operand has 506 places, 433 transitions, 6009 flow. Second operand 11 states and 215 transitions. [2024-06-27 18:16:36,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 489 transitions, 7267 flow [2024-06-27 18:16:40,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 489 transitions, 7089 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-27 18:16:40,358 INFO L231 Difference]: Finished difference. Result has 510 places, 433 transitions, 6149 flow [2024-06-27 18:16:40,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5831, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6149, PETRI_PLACES=510, PETRI_TRANSITIONS=433} [2024-06-27 18:16:40,358 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 469 predicate places. [2024-06-27 18:16:40,358 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 433 transitions, 6149 flow [2024-06-27 18:16:40,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:40,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:40,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:40,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-27 18:16:40,359 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:40,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:40,360 INFO L85 PathProgramCache]: Analyzing trace with hash 868032339, now seen corresponding path program 1 times [2024-06-27 18:16:40,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:40,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87415699] [2024-06-27 18:16:40,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:40,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:40,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:41,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:41,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:41,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87415699] [2024-06-27 18:16:41,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87415699] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:41,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:41,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:16:41,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414273979] [2024-06-27 18:16:41,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:41,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:16:41,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:41,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:16:41,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:16:41,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:16:41,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 433 transitions, 6149 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:41,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:41,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:16:41,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:44,715 INFO L124 PetriNetUnfolderBase]: 5284/9547 cut-off events. [2024-06-27 18:16:44,715 INFO L125 PetriNetUnfolderBase]: For 328274/328372 co-relation queries the response was YES. [2024-06-27 18:16:44,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56797 conditions, 9547 events. 5284/9547 cut-off events. For 328274/328372 co-relation queries the response was YES. Maximal size of possible extension queue 651. Compared 78452 event pairs, 1314 based on Foata normal form. 66/9514 useless extension candidates. Maximal degree in co-relation 56565. Up to 6722 conditions per place. [2024-06-27 18:16:44,879 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 313 selfloop transitions, 165 changer transitions 0/486 dead transitions. [2024-06-27 18:16:44,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 486 transitions, 7363 flow [2024-06-27 18:16:44,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:16:44,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:16:44,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 210 transitions. [2024-06-27 18:16:44,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515970515970516 [2024-06-27 18:16:44,880 INFO L175 Difference]: Start difference. First operand has 510 places, 433 transitions, 6149 flow. Second operand 11 states and 210 transitions. [2024-06-27 18:16:44,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 486 transitions, 7363 flow [2024-06-27 18:16:49,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 486 transitions, 7055 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 18:16:49,152 INFO L231 Difference]: Finished difference. Result has 512 places, 434 transitions, 6197 flow [2024-06-27 18:16:49,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5841, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6197, PETRI_PLACES=512, PETRI_TRANSITIONS=434} [2024-06-27 18:16:49,153 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 471 predicate places. [2024-06-27 18:16:49,153 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 434 transitions, 6197 flow [2024-06-27 18:16:49,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:49,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:49,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:49,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-27 18:16:49,154 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:49,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:49,154 INFO L85 PathProgramCache]: Analyzing trace with hash 868040709, now seen corresponding path program 2 times [2024-06-27 18:16:49,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:49,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562522946] [2024-06-27 18:16:49,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:49,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:49,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:50,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:50,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:50,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562522946] [2024-06-27 18:16:50,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562522946] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:50,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:50,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:16:50,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149321524] [2024-06-27 18:16:50,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:50,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:16:50,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:50,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:16:50,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:16:50,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:16:50,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 434 transitions, 6197 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:50,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:50,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:16:50,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:53,731 INFO L124 PetriNetUnfolderBase]: 5316/9611 cut-off events. [2024-06-27 18:16:53,731 INFO L125 PetriNetUnfolderBase]: For 333360/333458 co-relation queries the response was YES. [2024-06-27 18:16:53,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57362 conditions, 9611 events. 5316/9611 cut-off events. For 333360/333458 co-relation queries the response was YES. Maximal size of possible extension queue 653. Compared 79077 event pairs, 1284 based on Foata normal form. 66/9578 useless extension candidates. Maximal degree in co-relation 57129. Up to 5794 conditions per place. [2024-06-27 18:16:53,897 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 316 selfloop transitions, 169 changer transitions 0/493 dead transitions. [2024-06-27 18:16:53,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 493 transitions, 7517 flow [2024-06-27 18:16:53,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:16:53,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:16:53,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 214 transitions. [2024-06-27 18:16:53,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5257985257985258 [2024-06-27 18:16:53,899 INFO L175 Difference]: Start difference. First operand has 512 places, 434 transitions, 6197 flow. Second operand 11 states and 214 transitions. [2024-06-27 18:16:53,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 493 transitions, 7517 flow [2024-06-27 18:16:57,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 493 transitions, 7171 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-27 18:16:57,792 INFO L231 Difference]: Finished difference. Result has 514 places, 436 transitions, 6239 flow [2024-06-27 18:16:57,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5851, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6239, PETRI_PLACES=514, PETRI_TRANSITIONS=436} [2024-06-27 18:16:57,793 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 473 predicate places. [2024-06-27 18:16:57,793 INFO L495 AbstractCegarLoop]: Abstraction has has 514 places, 436 transitions, 6239 flow [2024-06-27 18:16:57,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:57,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:57,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:57,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-27 18:16:57,793 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:57,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:57,794 INFO L85 PathProgramCache]: Analyzing trace with hash 867794755, now seen corresponding path program 18 times [2024-06-27 18:16:57,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:57,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229327622] [2024-06-27 18:16:57,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:57,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:57,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:59,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:59,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:59,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229327622] [2024-06-27 18:16:59,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229327622] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:59,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:59,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:16:59,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446091578] [2024-06-27 18:16:59,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:59,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:16:59,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:59,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:16:59,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:16:59,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:16:59,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 436 transitions, 6239 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:59,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:59,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:16:59,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:02,526 INFO L124 PetriNetUnfolderBase]: 5405/9786 cut-off events. [2024-06-27 18:17:02,526 INFO L125 PetriNetUnfolderBase]: For 452665/452763 co-relation queries the response was YES. [2024-06-27 18:17:02,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57893 conditions, 9786 events. 5405/9786 cut-off events. For 452665/452763 co-relation queries the response was YES. Maximal size of possible extension queue 669. Compared 80962 event pairs, 1393 based on Foata normal form. 80/9767 useless extension candidates. Maximal degree in co-relation 57659. Up to 6731 conditions per place. [2024-06-27 18:17:02,881 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 323 selfloop transitions, 160 changer transitions 0/491 dead transitions. [2024-06-27 18:17:02,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 524 places, 491 transitions, 7497 flow [2024-06-27 18:17:02,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:17:02,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:17:02,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 213 transitions. [2024-06-27 18:17:02,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5233415233415234 [2024-06-27 18:17:02,883 INFO L175 Difference]: Start difference. First operand has 514 places, 436 transitions, 6239 flow. Second operand 11 states and 213 transitions. [2024-06-27 18:17:02,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 524 places, 491 transitions, 7497 flow [2024-06-27 18:17:07,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 491 transitions, 7263 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-27 18:17:07,259 INFO L231 Difference]: Finished difference. Result has 518 places, 436 transitions, 6330 flow [2024-06-27 18:17:07,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6005, PETRI_DIFFERENCE_MINUEND_PLACES=507, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6330, PETRI_PLACES=518, PETRI_TRANSITIONS=436} [2024-06-27 18:17:07,260 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 477 predicate places. [2024-06-27 18:17:07,260 INFO L495 AbstractCegarLoop]: Abstraction has has 518 places, 436 transitions, 6330 flow [2024-06-27 18:17:07,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:07,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:07,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:07,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-27 18:17:07,261 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:07,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:07,261 INFO L85 PathProgramCache]: Analyzing trace with hash 861361015, now seen corresponding path program 19 times [2024-06-27 18:17:07,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:07,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482454702] [2024-06-27 18:17:07,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:07,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:07,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat